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Espruino/libs/bluetooth/jswrap_bluetooth.c
Dimitri del Marmol 3488be45c4 Enable simple READs using NRF.updateServices
2016-10-04 13:20:52 +02:00

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/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is property of Nordic Semiconductor ASA.
* Terms and conditions of usage are described in detail in NORDIC
* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
*
* Licensees are granted free, non-transferable use of the information. NO
* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
* the file.
*
*/
#include "jswrap_bluetooth.h"
#include "jsinteractive.h"
#include "jsdevices.h"
#include "nrf5x_utils.h"
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "softdevice_handler.h"
#include "app_timer.h"
#include "ble_nus.h"
#include "app_util_platform.h"
#ifdef USE_NFC
#include "nfc_t2t_lib.h"
#include "nfc_uri_msg.h"
bool nfcEnabled = false;
#endif
#undef USE_BOOTLOADER // FIXME - this now errors with 0x4001 - not sure why
//... but then IMO we don't want to be able to enable DFU directly from BLE
//... much better to
#ifdef USE_BOOTLOADER
#include "device_manager.h"
#include "pstorage.h"
#include "ble_dfu.h"
#include "dfu_app_handler.h"
#include "nrf_delay.h"
#define IS_SRVC_CHANGED_CHARACT_PRESENT 1 /**< Include the service_changed characteristic. If not enabled, the server's database cannot be changed for the lifetime of the device. */
#else
#define IS_SRVC_CHANGED_CHARACT_PRESENT 0 /**< Include the service_changed characteristic. If not enabled, the server's database cannot be changed for the lifetime of the device. */
#endif
#ifdef NRF52
// nRF52 gets the ability to connect to other
#define CENTRAL_LINK_COUNT 1 /**<number of central links used by the application. When changing this number remember to adjust the RAM settings*/
#define PERIPHERAL_LINK_COUNT 1 /**<number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/
#else
#define CENTRAL_LINK_COUNT 0 /**<number of central links used by the application. When changing this number remember to adjust the RAM settings*/
#define PERIPHERAL_LINK_COUNT 1 /**<number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/
#endif
// Working out the amount of RAM we need - see softdevice_handler.h
#define IDEAL_RAM_START_ADDRESS_INTERN(CENTRAL_LINK_COUNT, PERIPHERAL_LINK_COUNT) \
APP_RAM_BASE_CENTRAL_LINKS_##CENTRAL_LINK_COUNT##_PERIPH_LINKS_##PERIPHERAL_LINK_COUNT##_SEC_COUNT_##CENTRAL_LINK_COUNT##_MID_BW
#define IDEAL_RAM_START_ADDRESS(C_LINK_CNT, P_LINK_CNT) IDEAL_RAM_START_ADDRESS_INTERN(C_LINK_CNT, P_LINK_CNT)
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */
#define APP_DEFAULT_ADV_INTERVAL MSEC_TO_UNITS(375, UNIT_0_625_MS) /**< The advertising interval (in units of 0.625 ms). */
#define APP_ADV_TIMEOUT_IN_SECONDS 180 /**< The advertising timeout (in units of seconds). */
#define SCAN_INTERVAL 0x00A0 /**< Scan interval in units of 0.625 millisecond. 100ms */
#define SCAN_WINDOW 0x00A0 /**< Scan window in units of 0.625 millisecond. 100ms */
// We want to listen as much of the time as possible. Not sure if 100/100 is feasible (50/100 is what's used in examples),
// but it seems to work fine like this.
#define APP_TIMER_OP_QUEUE_SIZE 1 /**< Size of timer operation queues. */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Minimum acceptable connection interval (7.5 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Maximum acceptable connection interval (20 ms (was 75)), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000, APP_TIMER_PRESCALER) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define APP_CFG_CHAR_MAX_LEN 20 /**< Size of the characteristic value being notified (in bytes). */
#ifdef USE_BOOTLOADER
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define DFU_REV_MAJOR 0x00 /** DFU Major revision number to be exposed. */
#define DFU_REV_MINOR 0x01 /** DFU Minor revision number to be exposed. */
#define DFU_REVISION ((DFU_REV_MAJOR << 8) | DFU_REV_MINOR) /** DFU Revision number to be exposed. Combined of major and minor versions. */
#define APP_SERVICE_HANDLE_START 0x000C /**< Handle of first application specific service when when service changed characteristic is present. */
#endif
#define BLE_HANDLE_MAX 0xFFFF /**< Max handle value in BLE. */
static ble_nus_t m_nus; /**< Structure to identify the Nordic UART Service. */
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
#if CENTRAL_LINK_COUNT>0
static uint16_t m_central_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle for central mode connection */
#endif
static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}}; /**< Universally unique service identifier. */
#ifdef USE_BOOTLOADER
static ble_dfu_t m_dfus; /**< Structure used to identify the DFU service. */
static dm_application_instance_t m_app_handle; /**< Application identifier allocated by device manager */
#endif
uint16_t advertising_interval = APP_DEFAULT_ADV_INTERVAL;
typedef enum {
BLE_NONE = 0,
BLE_IS_SENDING = 1,
BLE_IS_SCANNING = 2,
BLE_IS_ADVERTISING = 4,
} BLEStatus;
static volatile BLEStatus bleStatus = 0;
#define BLE_SCAN_EVENT JS_EVENT_PREFIX"blescan"
#define BLE_WRITE_EVENT JS_EVENT_PREFIX"blew"
/// Called when we have had an event that means we should execute JS
extern void jshHadEvent();
bool jswrap_nrf_transmit_string();
/*JSON{
"type" : "idle",
"generate" : "jswrap_nrf_idle"
}*/
bool jswrap_nrf_idle() {
return false;
}
/*JSON{
"type" : "kill",
"generate" : "jswrap_nrf_kill"
}*/
void jswrap_nrf_kill() {
// if we were scanning, make sure we stop at reset!
if (bleStatus & BLE_IS_SCANNING) {
sd_ble_gap_scan_stop();
bleStatus &= ~BLE_IS_SCANNING;
}
#if CENTRAL_LINK_COUNT>0
// if we were connected to something, disconnect
if (m_central_conn_handle != BLE_CONN_HANDLE_INVALID) {
sd_ble_gap_disconnect(m_central_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
}
#endif
}
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "connect",
"#ifdef" : "NRF52"
}
Called when Espruino *connects to another device* - not when a a device
connects to Espruino.
*/
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "disconnect",
"#ifdef" : "NRF52"
}
Called when Espruino *disconnects from another device* - not when a a device
disconnects from Espruino.
*/
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "servicesDiscover",
"#ifdef" : "NRF52"
}
Called with discovered services when discovery is finished
*/
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "characteristicsDiscover",
"#ifdef" : "NRF52"
}
Called with discovered characteristics when discovery is finished
*/
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "NFCon",
"#ifdef" : "NRF52"
}
Called when an NFC field is detected
*/
/*JSON{
"type" : "event",
"class" : "NRF",
"name" : "NFCoff",
"#ifdef" : "NRF52"
}
Called when an NFC field is no longer detected
*/
/**@brief Error handlers.
*
* @details
*/
void ble_app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t * p_file_name) {
#ifdef LED1_PININDEX
jshPinOutput(LED1_PININDEX, LED1_ONSTATE);
#endif
#ifdef LED2_PININDEX
jshPinOutput(LED2_PININDEX, LED2_ONSTATE);
#endif
#ifdef LED3_PININDEX
jshPinOutput(LED3_PININDEX, LED3_ONSTATE);
#endif
jsiConsolePrintf("NRF ERROR 0x%x at %s:%d\n", error_code, p_file_name?(const char *)p_file_name:"?", line_num);
jsiConsolePrint("REBOOTING.\n");
jshTransmitFlush();
jshDelayMicroseconds(1000000);
NVIC_SystemReset();
}
/**@brief Function for assert macro callback.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyse
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] p_file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name) {
ble_app_error_handler(0xDEADBEEF, line_num, p_file_name);
}
void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info) {
if (id == NRF_FAULT_ID_SDK_ERROR) {
error_info_t *error_info = (error_info_t *)info;
ble_app_error_handler(error_info->err_code, error_info->line_num, error_info->p_file_name);
} else
ble_app_error_handler(id, pc, 0);
}
void advertising_start(void) {
if (bleStatus & BLE_IS_ADVERTISING) return;
ble_gap_adv_params_t adv_params;
memset(&adv_params, 0, sizeof(adv_params));
adv_params.type = BLE_GAP_ADV_TYPE_ADV_IND;
adv_params.p_peer_addr = NULL;
adv_params.fp = BLE_GAP_ADV_FP_ANY;
adv_params.p_whitelist = NULL;
adv_params.timeout = APP_ADV_TIMEOUT_IN_SECONDS;
adv_params.interval = advertising_interval;
sd_ble_gap_adv_start(&adv_params);
bleStatus |= BLE_IS_ADVERTISING;
}
static void advertising_stop(void) {
uint32_t err_code;
if (!(bleStatus & BLE_IS_ADVERTISING)) return;
err_code = sd_ble_gap_adv_stop();
APP_ERROR_CHECK(err_code);
bleStatus &= ~BLE_IS_ADVERTISING;
}
#ifdef USE_BOOTLOADER
/**@brief Function for loading application-specific context after establishing a secure connection.
*
* @details This function will load the application context and check if the ATT table is marked as
* changed. If the ATT table is marked as changed, a Service Changed Indication
* is sent to the peer if the Service Changed CCCD is set to indicate.
*
* @param[in] p_handle The Device Manager handle that identifies the connection for which the context
* should be loaded.
*/
/*static void app_context_load(dm_handle_t const * p_handle)
{
uint32_t err_code;
static uint32_t context_data;
dm_application_context_t context;
context.len = sizeof(context_data);
context.p_data = (uint8_t *)&context_data;
err_code = dm_application_context_get(p_handle, &context);
if (err_code == NRF_SUCCESS)
{
// Send Service Changed Indication if ATT table has changed.
if ((context_data & (DFU_APP_ATT_TABLE_CHANGED << DFU_APP_ATT_TABLE_POS)) != 0)
{
err_code = sd_ble_gatts_service_changed(m_conn_handle, APP_SERVICE_HANDLE_START, BLE_HANDLE_MAX);
if ((err_code != NRF_SUCCESS) &&
(err_code != BLE_ERROR_INVALID_CONN_HANDLE) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != BLE_ERROR_NO_TX_PACKETS) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING))
{
APP_ERROR_HANDLER(err_code);
}
}
err_code = dm_application_context_delete(p_handle);
APP_ERROR_CHECK(err_code);
}
else if (err_code == DM_NO_APP_CONTEXT)
{
// No context available. Ignore.
}
else
{
APP_ERROR_HANDLER(err_code);
}
}*/
/**@brief Function for preparing for system reset.
*
* @details This function implements @ref dfu_app_reset_prepare_t. It will be called by
* @ref dfu_app_handler.c before entering the bootloader/DFU.
* This allows the current running application to shut down gracefully.
*/
static void reset_prepare(void)
{
uint32_t err_code;
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
// Disconnect from peer.
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
}
else
{
// If not connected, the device will be advertising. Hence stop the advertising.
advertising_stop();
}
err_code = ble_conn_params_stop();
APP_ERROR_CHECK(err_code);
nrf_delay_ms(500);
jsiKill();
jsvKill();
jshKill();
jshReset();
nrf_delay_ms(100);
}
#endif
/**@brief Function for the GAP initialization.
*
* @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
* the device. It also sets the permissions and appearance.
*/
static void gap_params_init(void)
{
uint32_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
char deviceName[BLE_GAP_DEVNAME_MAX_LEN];
#ifdef PUCKJS
strcpy(deviceName,"Puck.js");
#else
strcpy(deviceName,"Espruino "PC_BOARD_ID);
#endif
size_t len = strlen(deviceName);
#ifdef PUCKJS
// append last 2 bytes of MAC address to name
uint32_t addr = NRF_FICR->DEVICEADDR[0];
deviceName[len++] = ' ';
deviceName[len++] = itoch((addr>>12)&15);
deviceName[len++] = itoch((addr>>8)&15);
deviceName[len++] = itoch((addr>>4)&15);
deviceName[len++] = itoch((addr)&15);
// not null terminated
#endif
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *)deviceName,
len);
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the data from the Nordic UART Service.
*
* @details This function will process the data received from the Nordic UART BLE Service and send
* it to the terminal.
*
* @param[in] p_nus Nordic UART Service structure.
* @param[in] p_data Data to be send to UART module.
* @param[in] length Length of the data.
*/
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length) {
jshPushIOCharEvents(EV_BLUETOOTH, (char*)p_data, length);
jshHadEvent();
}
bool jswrap_nrf_transmit_string() {
if (m_conn_handle == BLE_CONN_HANDLE_INVALID) {
// If no connection, drain the output buffer
while (jshGetCharToTransmit(EV_BLUETOOTH)>=0);
}
if (bleStatus & BLE_IS_SENDING) return false;
static uint8_t buf[BLE_NUS_MAX_DATA_LEN];
int idx = 0;
int ch = jshGetCharToTransmit(EV_BLUETOOTH);
while (ch>=0) {
buf[idx++] = ch;
if (idx>=BLE_NUS_MAX_DATA_LEN) break;
ch = jshGetCharToTransmit(EV_BLUETOOTH);
}
if (idx>0) {
if (ble_nus_string_send(&m_nus, buf, idx) == NRF_SUCCESS)
bleStatus |= BLE_IS_SENDING;
}
return idx>0;
}
uint32_t radio_notification_init(uint32_t irq_priority, uint8_t notification_type, uint8_t notification_distance)
{
uint32_t err_code;
err_code = sd_nvic_ClearPendingIRQ(SWI1_IRQn);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = sd_nvic_SetPriority(SWI1_IRQn, irq_priority);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
err_code = sd_nvic_EnableIRQ(SWI1_IRQn);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
// Configure the event
return sd_radio_notification_cfg_set(notification_type, notification_distance);
}
void SWI1_IRQHandler(bool radio_evt) {
jswrap_nrf_transmit_string();
}
/**@brief Function for initializing services that will be used by the application.
*/
static void services_init(void)
{
uint32_t err_code;
ble_nus_init_t nus_init;
memset(&nus_init, 0, sizeof(nus_init));
nus_init.data_handler = nus_data_handler;
err_code = ble_nus_init(&m_nus, &nus_init);
APP_ERROR_CHECK(err_code);
#ifdef USE_BOOTLOADER
ble_dfu_init_t dfus_init;
// Initialize the Device Firmware Update Service.
memset(&dfus_init, 0, sizeof(dfus_init));
dfus_init.evt_handler = dfu_app_on_dfu_evt;
dfus_init.error_handler = NULL;
dfus_init.evt_handler = dfu_app_on_dfu_evt;
dfus_init.revision = DFU_REVISION;
err_code = ble_dfu_init(&m_dfus, &dfus_init);
APP_ERROR_CHECK(err_code);
dfu_app_reset_prepare_set(reset_prepare);
dfu_app_dm_appl_instance_set(m_app_handle);
#endif
}
/**@brief Function for handling an event from the Connection Parameters Module.
*
* @details This function will be called for all events in the Connection Parameters Module
* which are passed to the application.
*
* @note All this function does is to disconnect. This could have been done by simply setting
* the disconnect_on_fail config parameter, but instead we use the event handler
* mechanism to demonstrate its use.
*
* @param[in] p_evt Event received from the Connection Parameters Module.
*/
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt) {
uint32_t err_code;
if(p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED) {
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
}
}
/**@brief Function for handling errors from the Connection Parameters module.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void conn_params_error_handler(uint32_t nrf_error) {
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module.
*/
static void conn_params_init(void) {
uint32_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
// BLE UUID to string
JsVar *bleUUIDToStr(ble_uuid_t uuid) {
if (uuid.type == BLE_UUID_TYPE_UNKNOWN) {
return jsvVarPrintf("0x%04x[vendor]", uuid.uuid);
/* TODO: We actually need a sd_ble_gattc_read when we got this UUID, so
* we can find out what the full UUID actually was */
// see https://devzone.nordicsemi.com/question/15930/s130-custom-uuid-service-discovery/
}
if (uuid.type == BLE_UUID_TYPE_BLE)
return jsvVarPrintf("0x%04x", uuid.uuid);
uint8_t data[16];
uint8_t dataLen;
uint32_t err_code = sd_ble_uuid_encode(&uuid, &dataLen, data);
if (err_code)
return jsvVarPrintf("[sd_ble_uuid_encode error %d]", err_code);
// check error code?
assert(dataLen==16); // it should always be 16 as we checked above
uint16_t *wdata = (uint16_t*)&data[0];
return jsvVarPrintf("%04x%04x-%04x-%04x-%04x-%04x%04x%04x", wdata[7],wdata[6],wdata[5],wdata[4],wdata[3],wdata[2],wdata[1],wdata[0]);
}
// BLE MAC address to string
JsVar *bleAddrToStr(ble_gap_addr_t addr) {
return jsvVarPrintf("%02x:%02x:%02x:%02x:%02x:%02x",
addr.addr[5],
addr.addr[4],
addr.addr[3],
addr.addr[2],
addr.addr[1],
addr.addr[0]);
}
/* Convert a JsVar to a UUID - 0 if handled, a string showing the error if not
* Converts:
* Integers -> 16 bit BLE UUID
* "0xABCD" -> 16 bit BLE UUID
* "ABCDABCD-ABCD-ABCD-ABCD-ABCDABCDABCD" -> vendor specific BLE UUID
*/
const char *bleVarToUUID(ble_uuid_t *uuid, JsVar *v) {
if (jsvIsInt(v)) {
JsVarInt i = jsvGetInteger(v);
if (i<0 || i>0xFFFF) return "Integer out of range";
BLE_UUID_BLE_ASSIGN((*uuid), i);
return 0;
}
if (!jsvIsString(v)) return "Not a String or Integer";
unsigned int expectedLength = 16;
unsigned int startIdx = 0;
if (jsvIsStringEqualOrStartsWith(v,"0x",true)) {
// deal with 0xABCD vs ABCDABCD-ABCD-ABCD-ABCD-ABCDABCDABCD
expectedLength = 2;
startIdx = 2;
}
uint8_t data[16];
unsigned int dataLen = 0;
JsvStringIterator it;
jsvStringIteratorNew(&it, v, startIdx);
while (jsvStringIteratorHasChar(&it) && dataLen<expectedLength) {
// skip dashes if there were any
if (expectedLength==16 && jsvStringIteratorGetChar(&it)=='-')
jsvStringIteratorNext(&it);
// Read a byte
int hi = chtod(jsvStringIteratorGetChar(&it));
jsvStringIteratorNext(&it);
int lo = chtod(jsvStringIteratorGetChar(&it));
jsvStringIteratorNext(&it);
if (hi<0 || lo<0) {
jsvStringIteratorFree(&it);
return "String should only contain hex characters and dashes";
}
data[expectedLength - (dataLen+1)] = (unsigned)((hi<<4) | lo);
dataLen++;
}
if (jsvStringIteratorHasChar(&it)) dataLen++; // make sure we fail is string too long
jsvStringIteratorFree(&it);
if (dataLen!=expectedLength) {
return "Not the right length (16)";
}
// now try and decode the UUID
uint32_t err_code;
err_code = sd_ble_uuid_decode(dataLen, data, uuid);
// Not found - add it
if (err_code == NRF_ERROR_NOT_FOUND) {
uuid->uuid = ((data[13]<<8) | data[12]);
data[12] = 0; // these 2 not needed, but let's zero them anyway
data[13] = 0;
err_code = sd_ble_uuid_vs_add((ble_uuid128_t*)data, &uuid->type);
if (err_code == NRF_ERROR_NO_MEM)
return "Too many custom UUIDs already";
}
return err_code ? "BLE device error" : 0;
}
const char *bleVarToUUIDAndUnLock(ble_uuid_t *uuid, JsVar *v) {
const char *r = bleVarToUUID(uuid, v);
jsvUnLock(v);
return r;
}
void bleQueueEventAndUnLock(const char *name, JsVar *data) {
//jsiConsolePrintf("[%s] %j\n", name, data);
JsVar *nrf = jsvObjectGetChild(execInfo.root, "NRF", 0);
if (jsvHasChildren(nrf)) {
jsiQueueObjectCallbacks(nrf, name, &data, data?1:0);
}
jsvUnLock2(nrf, data);
}
/// Get the correct event name for a BLE write event to a characteristic (eventName should be 12 chars long)
void ble_handle_to_write_event_name(char *eventName, uint16_t handle) {
strcpy(eventName, BLE_WRITE_EVENT);
itostr(handle, &eventName[strlen(eventName)], 16);
}
/**@brief Function for the application's SoftDevice event handler.
*
* @param[in] p_ble_evt SoftDevice event.
*/
static void on_ble_evt(ble_evt_t * p_ble_evt)
{
uint32_t err_code;
//jsiConsolePrintf("\n[%d]\n", p_ble_evt->header.evt_id);
switch (p_ble_evt->header.evt_id) {
case BLE_GAP_EVT_TIMEOUT:
// the timeout for sd_ble_gap_adv_start expired - kick it off again
bleStatus &= ~BLE_IS_ADVERTISING; // we still think we're advertising, but we stopped
advertising_start();
break;
case BLE_GAP_EVT_CONNECTED:
if (p_ble_evt->evt.gap_evt.params.connected.role == BLE_GAP_ROLE_PERIPH) {
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
bleStatus &= ~BLE_IS_SENDING; // reset state - just in case
bleStatus &= ~BLE_IS_ADVERTISING; // we're not advertising now we're connected
if (!jsiIsConsoleDeviceForced()) jsiSetConsoleDevice(EV_BLUETOOTH, false);
jshHadEvent();
}
#if CENTRAL_LINK_COUNT>0
if (p_ble_evt->evt.gap_evt.params.connected.role == BLE_GAP_ROLE_CENTRAL) {
m_central_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
bleQueueEventAndUnLock(JS_EVENT_PREFIX"connect", 0);
jshHadEvent();
}
#endif
break;
case BLE_GAP_EVT_DISCONNECTED:
#if CENTRAL_LINK_COUNT>0
if (m_central_conn_handle == p_ble_evt->evt.gap_evt.conn_handle) {
m_central_conn_handle = BLE_CONN_HANDLE_INVALID;
bleQueueEventAndUnLock(JS_EVENT_PREFIX"disconnect", 0);
jshHadEvent();
break;
}
#endif
m_conn_handle = BLE_CONN_HANDLE_INVALID;
if (!jsiIsConsoleDeviceForced()) jsiSetConsoleDevice(DEFAULT_CONSOLE_DEVICE, 0);
// restart advertising after disconnection
advertising_start();
jshHadEvent();
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK(err_code);
break;
case BLE_EVT_TX_COMPLETE:
// UART Transmit finished - we can try and send more data
bleStatus &= ~BLE_IS_SENDING;
break;
case BLE_GAP_EVT_ADV_REPORT: {
// Advertising data received
const ble_gap_evt_adv_report_t *p_adv = &p_ble_evt->evt.gap_evt.params.adv_report;
JsVar *evt = jsvNewObject();
if (evt) {
jsvObjectSetChildAndUnLock(evt, "rssi", jsvNewFromInteger(p_adv->rssi));
//jsvObjectSetChildAndUnLock(evt, "addr_type", jsvNewFromInteger(p_adv->peer_addr.addr_type));
jsvObjectSetChildAndUnLock(evt, "addr", bleAddrToStr(p_adv->peer_addr));
JsVar *data = jsvNewStringOfLength(p_adv->dlen);
if (data) {
jsvSetString(data, (char*)p_adv->data, p_adv->dlen);
JsVar *ab = jsvNewArrayBufferFromString(data, p_adv->dlen);
jsvUnLock(data);
jsvObjectSetChildAndUnLock(evt, "data", ab);
}
jsiQueueObjectCallbacks(execInfo.root, BLE_SCAN_EVENT, &evt, 1);
jsvUnLock(evt);
jshHadEvent();
}
break;
}
case BLE_GATTS_EVT_WRITE: {
ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
// We got a param write event - add this to the object callback queue
JsVar *evt = jsvNewObject();
if (evt) {
JsVar *data = jsvNewStringOfLength(p_evt_write->len);
if (data) {
jsvSetString(data, (char*)p_evt_write->data, p_evt_write->len);
JsVar *ab = jsvNewArrayBufferFromString(data, p_evt_write->len);
jsvUnLock(data);
jsvObjectSetChildAndUnLock(evt, "data", ab);
}
char eventName[12];
ble_handle_to_write_event_name(eventName, p_evt_write->handle);
jsiQueueObjectCallbacks(execInfo.root, eventName, &evt, 1);
jsvUnLock(evt);
jshHadEvent();
}
break;
}
#if CENTRAL_LINK_COUNT>0
// For discovery....
case BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP: {
if (p_ble_evt->evt.gattc_evt.gatt_status == BLE_GATT_STATUS_SUCCESS) {
if (p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count ==0) return;
JsVar *srvcs = jsvObjectGetChild(execInfo.hiddenRoot, "bleSvcs", JSV_ARRAY);
if (srvcs) {
int i;
// Should actually return 'BLEService' object here
for (i=0;i<p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count;i++) {
ble_gattc_service_t *p_srv = &p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[i];
JsVar *o = jspNewObject(0, "BLEService");
if (o) {
jsvObjectSetChildAndUnLock(o,"uuid", bleUUIDToStr(p_srv->uuid));
jsvObjectSetChildAndUnLock(o,"start_handle", jsvNewFromInteger(p_srv->handle_range.start_handle));
jsvObjectSetChildAndUnLock(o,"end_handle", jsvNewFromInteger(p_srv->handle_range.end_handle));
jsvArrayPushAndUnLock(srvcs, o);
}
}
}
if (p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[0].handle_range.end_handle < 0xFFFF) {
jsvUnLock(srvcs);
// Now try again
uint16_t last = p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count-1;
uint16_t start_handle = p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[last].handle_range.end_handle+1;
sd_ble_gattc_primary_services_discover(p_ble_evt->evt.gap_evt.conn_handle, start_handle, NULL);
} else {
// When done, sent the result to the handler
bleQueueEventAndUnLock(JS_EVENT_PREFIX"servicesDiscover", srvcs);
jsvObjectSetChild(execInfo.hiddenRoot, "bleSvcs", 0);
jshHadEvent();
}
} // else error
break;
}
case BLE_GATTC_EVT_CHAR_DISC_RSP: {
JsVar *chars = jsvNewEmptyArray();
if (chars) {
int i;
for (i=0;i<p_ble_evt->evt.gattc_evt.params.char_disc_rsp.count;i++) {
JsVar *o = jspNewObject(0, "BLECharacteristic");
if (o) {
jsvObjectSetChildAndUnLock(o,"uuid", bleUUIDToStr(p_ble_evt->evt.gattc_evt.params.char_disc_rsp.chars[i].uuid));
jsvObjectSetChildAndUnLock(o,"handle_value", jsvNewFromInteger(p_ble_evt->evt.gattc_evt.params.char_disc_rsp.chars[i].handle_value));
jsvObjectSetChildAndUnLock(o,"handle_decl", jsvNewFromInteger(p_ble_evt->evt.gattc_evt.params.char_disc_rsp.chars[i].handle_decl));
// char_props?
jsvArrayPushAndUnLock(chars, o);
}
}
}
bleQueueEventAndUnLock(JS_EVENT_PREFIX"characteristicsDiscover", chars);
jshHadEvent();
break;
}
case BLE_GATTC_EVT_DESC_DISC_RSP:
jsiConsolePrintf("DESC\n");
break;
#endif
default:
// No implementation needed.
break;
}
}
/**@brief Function for dispatching a SoftDevice event to all modules with a SoftDevice
* event handler.
*
* @details This function is called from the SoftDevice event interrupt handler after a
* SoftDevice event has been received.
*
* @param[in] p_ble_evt SoftDevice event.
*/
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
ble_conn_params_on_ble_evt(p_ble_evt);
ble_nus_on_ble_evt(&m_nus, p_ble_evt);
#ifdef USE_BOOTLOADER
ble_dfu_on_ble_evt(&m_dfus, p_ble_evt);
#endif
on_ble_evt(p_ble_evt);
#ifdef USE_BOOTLOADER
dm_ble_evt_handler(p_ble_evt);
#endif
}
/**@brief Function for dispatching a system event to interested modules.
*
* @details This function is called from the System event interrupt handler after a system
* event has been received.
*
* @param[in] sys_evt System stack event.
*/
static void sys_evt_dispatch(uint32_t sys_evt)
{
#ifdef USE_BOOTLOADER
pstorage_sys_event_handler(sys_evt);
#endif
ble_advertising_on_sys_evt(sys_evt);
}
#ifdef USE_NFC
/// Sigh - NFC has lots of these, so we need to define it to build
void log_uart_printf(const char * format_msg, ...) {
// jsiConsolePrintf("NFC: %s\n", format_msg);
}
/**
* @brief Callback function for handling NFC events.
*/
void nfc_callback(void *context, NfcEvent event, const char *data, size_t dataLength)
{
(void)context;
switch (event)
{
case NFC_EVENT_FIELD_ON:
bleQueueEventAndUnLock(JS_EVENT_PREFIX"NFCon", 0);
break;
case NFC_EVENT_FIELD_OFF:
bleQueueEventAndUnLock(JS_EVENT_PREFIX"NFCoff", 0);
break;
default:
break;
}
}
#endif
/**@brief Function for the SoftDevice initialization.
*
* @details This function initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
uint32_t err_code;
// TODO: enable if we're on a device with 32kHz xtal
/*nrf_clock_lf_cfg_t clock_lf_cfg = {
.source = NRF_CLOCK_LF_SRC_XTAL,
.rc_ctiv = 0,
.rc_temp_ctiv = 0,
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM};*/
nrf_clock_lf_cfg_t clock_lf_cfg = {
.source = NRF_CLOCK_LF_SRC_RC,
.rc_ctiv = 16, // recommended for nRF52
.rc_temp_ctiv = 2, // recommended for nRF52
.xtal_accuracy = 0};
// Initialize SoftDevice.
SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, false);
ble_enable_params_t ble_enable_params;
err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
PERIPHERAL_LINK_COUNT,
&ble_enable_params);
APP_ERROR_CHECK(err_code);
uint32_t softdevice_extra_ram_hack = 0;
ble_enable_params.common_enable_params.vs_uuid_count = 3;
softdevice_extra_ram_hack += 32; // now we have more UUIDs, SD needs more RAM
#ifdef USE_BOOTLOADER
ble_enable_params.gatts_enable_params.service_changed = 1;
#endif
//Check the ram settings against the used number of links
CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT, PERIPHERAL_LINK_COUNT);
extern int __data_start__; // should be 'void', but 'int' avoids warnings
if (IDEAL_RAM_START_ADDRESS(CENTRAL_LINK_COUNT, PERIPHERAL_LINK_COUNT)+softdevice_extra_ram_hack != (uint32_t)&__data_start__) {
jsiConsolePrintf("WARNING: BLE RAM start address not correct - is 0x%x, should be 0x%x\n\n", (uint32_t)&__data_start__, IDEAL_RAM_START_ADDRESS(CENTRAL_LINK_COUNT, PERIPHERAL_LINK_COUNT)+softdevice_extra_ram_hack);
jshTransmitFlush();
}
// Enable BLE stack.
err_code = softdevice_enable(&ble_enable_params);
APP_ERROR_CHECK(err_code);
// Subscribe for BLE events.
err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
APP_ERROR_CHECK(err_code);
// Register with the SoftDevice handler module for BLE events.
err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
APP_ERROR_CHECK(err_code);
// can only be enabled if we're sure we have a DC-DC
/*err_code = sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
APP_ERROR_CHECK(err_code);*/
}
// Build advertising data struct to pass into @ref ble_advertising_init.
static void setup_advdata(ble_advdata_t *advdata) {
memset(advdata, 0, sizeof(*advdata));
advdata->name_type = BLE_ADVDATA_FULL_NAME;
advdata->include_appearance = false;
advdata->flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
}
/**@brief Function for initializing the Advertising functionality.
*/
static void advertising_init(void)
{
uint32_t err_code;
ble_advdata_t advdata;
ble_advdata_t scanrsp;
// Build advertising data struct to pass into @ref ble_advertising_init.
setup_advdata(&advdata);
memset(&scanrsp, 0, sizeof(scanrsp));
scanrsp.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
scanrsp.uuids_complete.p_uuids = m_adv_uuids;
ble_adv_modes_config_t options = {0};
options.ble_adv_fast_enabled = BLE_ADV_FAST_ENABLED;
options.ble_adv_fast_interval = advertising_interval;
options.ble_adv_fast_timeout = APP_ADV_TIMEOUT_IN_SECONDS;
err_code = ble_advertising_init(&advdata, &scanrsp, &options, NULL, NULL);
APP_ERROR_CHECK(err_code);
}
#ifdef USE_BOOTLOADER
/**@brief Function for handling the Device Manager events.
*
* @param[in] p_evt Data associated to the device manager event.
*/
static uint32_t device_manager_evt_handler(dm_handle_t const * p_handle,
dm_event_t const * p_event,
ret_code_t event_result)
{
APP_ERROR_CHECK(event_result);
if (p_event->event_id == DM_EVT_LINK_SECURED)
{
//app_context_load(p_handle);
}
return NRF_SUCCESS;
}
/**@brief Function for the Device Manager initialization.
*
* @param[in] erase_bonds Indicates whether bonding information should be cleared from
* persistent storage during initialization of the Device Manager.
*/
static void device_manager_init(bool erase_bonds)
{
uint32_t err_code;
dm_init_param_t init_param = {.clear_persistent_data = erase_bonds};
dm_application_param_t register_param;
// Initialize persistent storage module.
err_code = pstorage_init();
APP_ERROR_CHECK(err_code);
err_code = dm_init(&init_param);
APP_ERROR_CHECK(err_code);
memset(&register_param.sec_param, 0, sizeof(ble_gap_sec_params_t));
register_param.sec_param.bond = SEC_PARAM_BOND;
register_param.sec_param.mitm = SEC_PARAM_MITM;
register_param.sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
register_param.sec_param.oob = SEC_PARAM_OOB;
register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
register_param.evt_handler = device_manager_evt_handler;
register_param.service_type = DM_PROTOCOL_CNTXT_GATT_SRVR_ID;
err_code = dm_register(&m_app_handle, &register_param);
APP_ERROR_CHECK(err_code);
}
#endif
/*JSON{
"type": "class",
"class" : "NRF"
}
The NRF class is for controlling functionality of the Nordic nRF51/nRF52 chips. Currently these only used in [Puck.js](http://puck-js.com) and the [BBC micro:bit](/MicroBit).
The main part of this is control of Bluetooth Low Energy - both searching for devices, and changing advertising data.
*/
/*JSON{
"type" : "object",
"name" : "Bluetooth",
"instanceof" : "Serial",
"#ifdef" : "BLUETOOTH"
}
The Bluetooth Serial port - used when data is sent or received over Bluetooth Smart on nRF51/nRF52 chips.
*/
void jswrap_nrf_bluetooth_init(void) {
// Initialize.
APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
ble_stack_init();
#ifdef USE_BOOTLOADER
bool erase_bonds = false;
device_manager_init(erase_bonds);
#endif
gap_params_init();
services_init();
advertising_init();
conn_params_init();
jswrap_nrf_bluetooth_wake();
radio_notification_init(
#ifdef NRF52
6, /* IRQ Priority - Must be 6 on nRF52. 7 doesn't work */
#else
3, /* IRQ Priority - nRF51 has different IRQ structure */
#endif
NRF_RADIO_NOTIFICATION_TYPE_INT_ON_INACTIVE,
NRF_RADIO_NOTIFICATION_DISTANCE_5500US);
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "sleep",
"generate" : "jswrap_nrf_bluetooth_sleep"
}
Disable Bluetooth communications
*/
void jswrap_nrf_bluetooth_sleep(void) {
uint32_t err_code;
// If connected, disconnect.
if (m_conn_handle != BLE_CONN_HANDLE_INVALID) {
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
}
// Stop advertising
if (bleStatus & BLE_IS_ADVERTISING)
advertising_stop();
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "wake",
"generate" : "jswrap_nrf_bluetooth_wake"
}
Enable Bluetooth communications (they are enabled by default)
*/
void jswrap_nrf_bluetooth_wake(void) {
advertising_start();
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "getBattery",
"generate" : "jswrap_nrf_bluetooth_getBattery",
"return" : ["float", "Battery level in volts" ]
}
Get the battery level in volts
*/
JsVarFloat jswrap_nrf_bluetooth_getBattery(void) {
#ifdef NRF52
return jshReadVRef();
#else
// Configure ADC
NRF_ADC->CONFIG = (ADC_CONFIG_RES_8bit << ADC_CONFIG_RES_Pos) |
(ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
(ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos) |
(ADC_CONFIG_PSEL_Disabled << ADC_CONFIG_PSEL_Pos) |
(ADC_CONFIG_EXTREFSEL_None << ADC_CONFIG_EXTREFSEL_Pos);
NRF_ADC->EVENTS_END = 0;
NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;
NRF_ADC->EVENTS_END = 0; // Stop any running conversions.
NRF_ADC->TASKS_START = 1;
while (!NRF_ADC->EVENTS_END);
uint16_t vbg_in_mv = 1200;
uint8_t adc_max = 255;
uint16_t vbat_current_in_mv = (NRF_ADC->RESULT * 3 * vbg_in_mv) / adc_max;
NRF_ADC->EVENTS_END = 0;
NRF_ADC->TASKS_STOP = 1;
return vbat_current_in_mv / 1000.0;
#endif
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "setAdvertising",
"generate" : "jswrap_nrf_bluetooth_setAdvertising",
"params" : [
["data","JsVar","The data to advertise as an object - see below for more info"],
["options","JsVar","An optional object of options"]
]
}
Change the data that Espruino advertises.
Data can be of the form `{ UUID : data_as_byte_array }`. The UUID should be a [Bluetooth Service ID](https://developer.bluetooth.org/gatt/services/Pages/ServicesHome.aspx).
For example to return battery level at 95%, do:
```
NRF.setAdvertising({
0x180F : [95]
});
```
Or you could report the current temperature:
```
setInterval(function() {
NRF.setAdvertising({
0x1809 : [Math.round(E.getTemperature())]
});
}, 30000);
```
**Note:** Currently only standardised bluetooth UUIDs are allowed (see the
list above).
You can also supply the raw advertising data in an array. For example to advertise as an Eddystone beacon:
```
NRF.setAdvertising([0x03, // Length of Service List
0x03, // Param: Service List
0xAA, 0xFE, // Eddystone ID
0x13, // Length of Service Data
0x16, // Service Data
0xAA, 0xFE, // Eddystone ID
0x10, // Frame type: URL
0xF8, // Power
0x03, // https://
'g','o','o','.','g','l','/','B','3','J','0','O','c'],
{interval:100});
```
`options` is an object, which can contain:
```
{
name: "Hello" // The name of the device
showName: true/false // include full name, or nothing
discoverable: true/false // general discoverable, or limited - default is limited
interval: 600 // Advertising interval in msec, between 20 and 10000
}` to avoid adding the Nordic UART service
```
*/
void jswrap_nrf_bluetooth_setAdvertising(JsVar *data, JsVar *options) {
uint32_t err_code;
ble_advdata_t advdata;
setup_advdata(&advdata);
bool bleChanged = false;
bool isAdvertising = bleStatus & BLE_IS_ADVERTISING;
if (jsvIsObject(options)) {
JsVar *v;
v = jsvObjectGetChild(options, "showName", 0);
if (v) advdata.name_type = jsvGetBoolAndUnLock(v) ?
BLE_ADVDATA_FULL_NAME :
BLE_ADVDATA_NO_NAME;
v = jsvObjectGetChild(options, "discoverable", 0);
if (v) advdata.flags = jsvGetBoolAndUnLock(v) ?
BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE :
BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
v = jsvObjectGetChild(options, "interval", 0);
if (v) {
uint16_t new_advertising_interval = MSEC_TO_UNITS(jsvGetIntegerAndUnLock(v), UNIT_0_625_MS);
if (new_advertising_interval<0x0020) new_advertising_interval=0x0020;
if (new_advertising_interval>0x4000) new_advertising_interval=0x4000;
if (new_advertising_interval != advertising_interval) {
advertising_interval = new_advertising_interval;
bleChanged = true;
}
}
v = jsvObjectGetChild(options, "name", 0);
if (v) {
JSV_GET_AS_CHAR_ARRAY(namePtr, nameLen, v);
if (namePtr) {
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *)namePtr,
nameLen);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
bleChanged = true;
}
jsvUnLock(v);
}
} else if (!jsvIsUndefined(options)) {
jsExceptionHere(JSET_TYPEERROR, "Expecting 'options' to be object or undefined, got %t", options);
return;
}
if (jsvIsArray(data)) {
// raw data...
JSV_GET_AS_CHAR_ARRAY(dPtr, dLen, data);
if (!dPtr) {
jsExceptionHere(JSET_TYPEERROR, "Unable to convert data argument to an array");
return;
}
if (bleChanged && isAdvertising)
advertising_stop();
err_code = sd_ble_gap_adv_data_set((uint8_t *)dPtr, dLen, NULL, 0);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
if (bleChanged && isAdvertising)
advertising_start();
return; // we're done here now
} else if (jsvIsObject(data)) {
ble_advdata_service_data_t *service_data = (ble_advdata_service_data_t*)alloca(jsvGetChildren(data)*sizeof(ble_advdata_service_data_t));
int n = 0;
JsvObjectIterator it;
jsvObjectIteratorNew(&it, data);
while (jsvObjectIteratorHasValue(&it)) {
service_data[n].service_uuid = jsvGetIntegerAndUnLock(jsvObjectIteratorGetKey(&it));
JsVar *v = jsvObjectIteratorGetValue(&it);
JSV_GET_AS_CHAR_ARRAY(dPtr, dLen, v);
jsvUnLock(v);
service_data[n].data.size = dLen;
service_data[n].data.p_data = (uint8_t*)dPtr;
jsvObjectIteratorNext(&it);
n++;
}
jsvObjectIteratorFree(&it);
advdata.service_data_count = n;
advdata.p_service_data_array = service_data;
} else if (!jsvIsUndefined(data)) {
jsExceptionHere(JSET_TYPEERROR, "Expecting object or undefined, got %t", data);
return;
}
if (bleChanged && isAdvertising)
advertising_stop();
err_code = ble_advdata_set(&advdata, NULL);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
if (bleChanged && isAdvertising)
advertising_start();
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "setServices",
"generate" : "jswrap_nrf_bluetooth_setServices",
"params" : [
["data","JsVar","The service (and characteristics) to advertise"]
]
}
BETA: This only partially works at the moment
Change the services and characteristics Espruino advertises.
```
NRF.setServices({
0xBCDE : {
0xABCD : {
value : "Hello", // optional
maxLen : 5, // optional (otherwise is length of initial value)
broadcast : false, // optional, default is false
readable : true, // optional, default is false
writable : true, // optional, default is false
notify : true, // optional, default is false
onWrite : function(evt) { // optional
console.log("Got ", evt.data);
}
}
// more characteristics allowed
}
// more services allowed
});
```
**Note:** UUIDs can be integers between `0` and `0xFFFF`, strings of
the form `"0xABCD"`, or strings of the form `""ABCDABCD-ABCD-ABCD-ABCD-ABCDABCDABCD""`
*/
void jswrap_nrf_bluetooth_setServices(JsVar *data) {
uint32_t err_code;
// TODO: Reset services (esp. removing Nordic UART if not needed)
// TODO: Reset services on kill
if (jsvIsObject(data)) {
JsvObjectIterator it;
jsvObjectIteratorNew(&it, data);
while (jsvObjectIteratorHasValue(&it)) {
ble_uuid_t ble_uuid;
uint16_t service_handle;
// Add the service
const char *errorStr;
if ((errorStr=bleVarToUUIDAndUnLock(&ble_uuid, jsvObjectIteratorGetKey(&it)))) {
jsExceptionHere(JSET_ERROR, "Invalid Service UUID: %s", errorStr);
break;
}
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
&ble_uuid,
&service_handle);
if (err_code) {
jsExceptionHere(JSET_ERROR, "Got BLE error code %d in gatts_service_add", err_code);
break;
}
// sd_ble_gatts_include_add ?
// Now add characteristics
JsVar *serviceVar = jsvObjectIteratorGetValue(&it);
JsvObjectIterator serviceit;
jsvObjectIteratorNew(&serviceit, serviceVar);
while (jsvObjectIteratorHasValue(&serviceit)) {
ble_uuid_t char_uuid;
ble_gatts_char_md_t char_md;
ble_gatts_attr_t attr_char_value;
ble_gatts_attr_md_t attr_md;
ble_gatts_char_handles_t characteristic_handles;
if ((errorStr=bleVarToUUIDAndUnLock(&char_uuid, jsvObjectIteratorGetKey(&serviceit)))) {
jsExceptionHere(JSET_ERROR, "Invalid Characteristic UUID: %s", errorStr);
break;
}
JsVar *charVar = jsvObjectIteratorGetValue(&serviceit);
memset(&char_md, 0, sizeof(char_md));
if (jsvGetBoolAndUnLock(jsvObjectGetChild(charVar, "broadcast", 0)))
char_md.char_props.broadcast = 1;
if (jsvGetBoolAndUnLock(jsvObjectGetChild(charVar, "notify", 0)))
char_md.char_props.notify = 1;
if (jsvGetBoolAndUnLock(jsvObjectGetChild(charVar, "readable", 0)))
char_md.char_props.read = 1;
if (jsvGetBoolAndUnLock(jsvObjectGetChild(charVar, "writable", 0))) {
char_md.char_props.write = 1;
char_md.char_props.write_wo_resp = 1;
}
char_md.p_char_user_desc = NULL;
char_md.p_char_pf = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_cccd_md = NULL;
char_md.p_sccd_md = NULL;
memset(&attr_md, 0, sizeof(attr_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen = 1; // TODO: variable length?
memset(&attr_char_value, 0, sizeof(attr_char_value));
attr_char_value.p_uuid = &char_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = 0;
attr_char_value.init_offs = 0;
attr_char_value.p_value = 0;
attr_char_value.max_len = (uint16_t)jsvGetIntegerAndUnLock(jsvObjectGetChild(charVar, "maxLen", 0));
if (attr_char_value.max_len==0) attr_char_value.max_len=1;
// get initial data
JsVar *charValue = jsvObjectGetChild(charVar, "value", 0);
if (charValue) {
JSV_GET_AS_CHAR_ARRAY(vPtr, vLen, charValue);
if (vPtr && vLen) {
attr_char_value.p_value = (uint8_t*)vPtr;
attr_char_value.init_len = vLen;
if (attr_char_value.init_len > attr_char_value.max_len)
attr_char_value.max_len = attr_char_value.init_len;
}
}
err_code = sd_ble_gatts_characteristic_add(service_handle,
&char_md,
&attr_char_value,
&characteristic_handles);
jsvUnLock(charValue); // unlock here in case we were storing data in a flat string
if (err_code) {
jsExceptionHere(JSET_ERROR, "Got BLE error code %d in gatts_characteristic_add", err_code);
break;
}
// Add Write callback
JsVar *writeCb = jsvObjectGetChild(charVar, "onWrite", 0);
if (writeCb) {
char eventName[12];
ble_handle_to_write_event_name(eventName, characteristic_handles.value_handle);
jsvObjectSetChildAndUnLock(execInfo.root, eventName, writeCb);
}
jsvUnLock(charVar);
jsvObjectIteratorNext(&serviceit);
}
jsvObjectIteratorFree(&serviceit);
jsvUnLock(serviceVar);
jsvObjectIteratorNext(&it);
}
jsvObjectIteratorFree(&it);
} else if (!jsvIsUndefined(data)) {
jsExceptionHere(JSET_TYPEERROR, "Expecting object or undefined, got %t", data);
}
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "updateServices",
"generate" : "jswrap_nrf_bluetooth_updateServices",
"params" : [
["data","JsVar","The service (and characteristics) to update"]
]
}
Update values for the services and characteristics Espruino advertises.
Only services and characteristics previously declared using `setServices` are affected.
To update the '0xABCD' characteristic in the '0xBCDE' service:
```
NRF.updateServices({
0xBCDE : {
0xABCD : {
value : "World"
}
}
});
```
To notify connected clients of a change to the '0xABCD' characteristic in the '0xBCDE' service:
```
NRF.updateServices({
0xBCDE : {
0xABCD : {
value : "World",
notify: true
}
}
});
```
This only works if the chracteristic was create with `notify: true`,
otherwise the characteristic will be updated but no otification will be sent.
**Note:** See `setServices` for more information
*/
void jswrap_nrf_bluetooth_updateServices(JsVar *data) {
uint32_t err_code;
if (jsvIsObject(data)) {
JsvObjectIterator it;
jsvObjectIteratorNew(&it, data);
while (jsvObjectIteratorHasValue(&it)) {
ble_uuid_t ble_uuid;
memset(&ble_uuid, 0, sizeof(ble_uuid));
const char *errorStr;
if ((errorStr = bleVarToUUIDAndUnLock(&ble_uuid,
jsvObjectIteratorGetKey(&it)))) {
jsExceptionHere(JSET_ERROR, "Invalid Service UUID: %s", errorStr);
break;
}
JsVar *serviceVar = jsvObjectIteratorGetValue(&it);
JsvObjectIterator serviceit;
jsvObjectIteratorNew(&serviceit, serviceVar);
while (jsvObjectIteratorHasValue(&serviceit)) {
ble_uuid_t char_uuid;
memset(&char_uuid, 0, sizeof(char_uuid));
if ((errorStr = bleVarToUUIDAndUnLock(&char_uuid,
jsvObjectIteratorGetKey(&serviceit)))) {
jsExceptionHere(JSET_ERROR, "Invalid Characteristic UUID: %s",
errorStr);
break;
}
JsVar *charVar = jsvObjectIteratorGetValue(&serviceit);
JsVar *charValue = jsvObjectGetChild(charVar, "value", 0);
bool notification_requested = jsvGetBoolAndUnLock(jsvObjectGetChild(charVar, "notify", 0));
if (charValue) {
JSV_GET_AS_CHAR_ARRAY(vPtr, vLen, charValue);
if (vPtr && vLen) {
uint8_t* p_value = (uint8_t*) vPtr;
uint16_t len = MIN(vLen, APP_CFG_CHAR_MAX_LEN);
// Update value and notify/indicate if appropriate
uint16_t char_handle;
ble_uuid_t uuid_it;
ble_gatts_hvx_params_t hvx_params;
ble_gatts_value_t gatts_value;
// Find the first user characteristic handle
err_code = sd_ble_gatts_initial_user_handle_get(&char_handle);
if (err_code != NRF_SUCCESS) {
APP_ERROR_CHECK(err_code);
}
// Iterate over all handles until the correct UUID or no match is found
// We assume that handles are sequential
while (true) {
memset(&uuid_it, 0, sizeof(uuid_it));
err_code = sd_ble_gatts_attr_get(char_handle, &uuid_it, NULL);
if (err_code == NRF_ERROR_NOT_FOUND) {
// "Out of bounds" => we went over the last known characteristic
break;
} else if (err_code == NRF_SUCCESS) {
// Valid handle => check if UUID matches
if (uuid_it.uuid == char_uuid.uuid) {
// Update the value for subsequent reads even if no client is currently connected
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = len;
gatts_value.offset = 0;
gatts_value.p_value = p_value;
err_code = sd_ble_gatts_value_set(m_conn_handle, char_handle, &gatts_value);
if (err_code != NRF_SUCCESS) {
APP_ERROR_CHECK(err_code);
}
// Notify connected clients if necessary
if (notification_requested && (m_conn_handle != BLE_CONN_HANDLE_INVALID)) {
memset(&hvx_params, 0, sizeof(hvx_params));
hvx_params.handle = char_handle;
hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
hvx_params.offset = 0;
hvx_params.p_len = &len;
hvx_params.p_data = p_value;
err_code = sd_ble_gatts_hvx(m_conn_handle, &hvx_params);
if ((err_code != NRF_SUCCESS)
&& (err_code != NRF_ERROR_INVALID_STATE)
&& (err_code != BLE_ERROR_NO_TX_PACKETS)
&& (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)) {
APP_ERROR_CHECK(err_code);
}
}
break;
}
} else {
APP_ERROR_CHECK(err_code);
}
char_handle++;
}
}
}
jsvUnLock(charValue);
jsvUnLock(charVar);
jsvObjectIteratorNext(&serviceit);
}
jsvObjectIteratorFree(&serviceit);
jsvUnLock(serviceVar);
jsvObjectIteratorNext(&it);
}
jsvObjectIteratorFree(&it);
} else if (!jsvIsUndefined(data)) {
jsExceptionHere(JSET_TYPEERROR, "Expecting object or undefined, got %t",
data);
}
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "setScan",
"generate" : "jswrap_nrf_bluetooth_setScan",
"params" : [
["callback","JsVar","The callback to call with information about received, or undefined to stop"]
]
}
Start/stop listening for BLE advertising packets within range.
```
// Start scanning
NRF.setScan(function(d) {
console.log(JSON.stringify(d,null,2));
});
// prints {"rssi":-72, "addr":"##:##:##:##:##:##", "data":new ArrayBuffer([2,1,6,...])}
// Stop Scanning
NRF.setScan(false);
```
*/
void jswrap_nrf_bluetooth_setScan(JsVar *callback) {
uint32_t err_code;
// set the callback event variable
if (!jsvIsFunction(callback)) callback=0;
jsvObjectSetChild(execInfo.root, BLE_SCAN_EVENT, callback);
// either start or stop scanning
if (callback) {
ble_gap_scan_params_t m_scan_param;
// non-selective scan
m_scan_param.active = 0; // Active scanning set.
m_scan_param.selective = 0; // Selective scanning not set.
m_scan_param.interval = SCAN_INTERVAL;// Scan interval.
m_scan_param.window = SCAN_WINDOW; // Scan window.
m_scan_param.p_whitelist = NULL; // No whitelist provided.
m_scan_param.timeout = 0x0000; // No timeout.
err_code = sd_ble_gap_scan_start(&m_scan_param);
} else {
err_code = sd_ble_gap_scan_stop();
}
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "setTxPower",
"generate" : "jswrap_nrf_bluetooth_setTxPower",
"params" : [
["power","int","Transmit power. Accepted values are -40, -30, -20, -16, -12, -8, -4, 0, and 4 dBm. Others will give an error code."]
]
}
Set the BLE radio transmit power. The default TX power is 0 dBm.
*/
void jswrap_nrf_bluetooth_setTxPower(JsVarInt pwr) {
uint32_t err_code;
err_code = sd_ble_gap_tx_power_set(pwr);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "connect",
"generate" : "jswrap_nrf_bluetooth_connect",
"params" : [
["mac","JsVar","The MAC address to connect to"]
]
}
Connect to a BLE device by MAC address
**Note:** This is only available on some devices
*/
void jswrap_nrf_bluetooth_connect(JsVar *mac) {
#if CENTRAL_LINK_COUNT>0
// untested
// Convert mac address to something readable - pretty hacky
if (!jsvIsString(mac) ||
jsvGetStringLength(mac)!=17 ||
jsvGetCharInString(mac, 2)!=':' ||
jsvGetCharInString(mac, 5)!=':' ||
jsvGetCharInString(mac, 8)!=':' ||
jsvGetCharInString(mac, 11)!=':' ||
jsvGetCharInString(mac, 14)!=':') {
jsExceptionHere(JSET_TYPEERROR, "Expecting a mac address of the form aa:bb:cc:dd:ee:ff");
return;
}
ble_gap_addr_t peer_addr;
peer_addr.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC; // not sure why this isn't public?
int i;
for (i=0;i<6;i++)
peer_addr.addr[5-i] = (chtod(jsvGetCharInString(mac, i*3))<<4) | chtod(jsvGetCharInString(mac, (i*3)+1));
uint32_t err_code;
ble_gap_scan_params_t m_scan_param;
m_scan_param.active = 0; // Active scanning set.
m_scan_param.selective = 0; // Selective scanning not set.
m_scan_param.interval = SCAN_INTERVAL;// Scan interval.
m_scan_param.window = SCAN_WINDOW; // Scan window.
m_scan_param.p_whitelist = NULL; // No whitelist provided.
m_scan_param.timeout = 0x0000; // No timeout.
ble_gap_conn_params_t gap_conn_params;
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_connect(&peer_addr, &m_scan_param, &gap_conn_params);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
#else
jsExceptionHere(JSET_ERROR, "Unimplemented");
#endif
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "disconnect",
"generate" : "jswrap_nrf_bluetooth_disconnect"
}
Disconnect from a previously connected BLE device connected with
`NRF.connect` - this does not disconnect from something that has
connected to the Espruino.
**Note:** This is only available on some devices
*/
void jswrap_nrf_bluetooth_disconnect() {
#if CENTRAL_LINK_COUNT>0
uint32_t err_code;
if (m_central_conn_handle != BLE_CONN_HANDLE_INVALID) {
// we have a connection, disconnect
err_code = sd_ble_gap_disconnect(m_central_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
} else {
// no connection - try and cancel the connect attempt (assume we have one)
err_code = sd_ble_gap_connect_cancel();
}
if (err_code) {
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
}
#else
jsExceptionHere(JSET_ERROR, "Unimplemented");
#endif
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "discoverServices",
"generate" : "jswrap_nrf_bluetooth_discoverServices"
}
**Note:** This is only available on some devices
*/
void jswrap_nrf_bluetooth_discoverServices() {
#if CENTRAL_LINK_COUNT>0
if (m_central_conn_handle == BLE_CONN_HANDLE_INVALID)
return jsExceptionHere(JSET_ERROR, "Not Connected");
uint32_t err_code;
err_code = sd_ble_gattc_primary_services_discover(m_central_conn_handle, 1 /* start handle */, NULL);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
#else
jsExceptionHere(JSET_ERROR, "Unimplemented");
#endif
}
/*JSON{
"type": "class",
"class" : "BLEService"
}
**Note:** This is only available on some devices
*/
/*JSON{
"type" : "method",
"class" : "BLEService",
"name" : "discoverCharacteristics",
"generate" : "jswrap_nrf_bleservice_discoverCharacteristics"
}
**Note:** This is only available on some devices
*/
void jswrap_nrf_bleservice_discoverCharacteristics(JsVar *service) {
#if CENTRAL_LINK_COUNT>0
if (m_central_conn_handle == BLE_CONN_HANDLE_INVALID)
return jsExceptionHere(JSET_ERROR, "Not Connected");
ble_gattc_handle_range_t range;
range.start_handle = jsvGetIntegerAndUnLock(jsvObjectGetChild(service, "start_handle", 0));
range.end_handle = jsvGetIntegerAndUnLock(jsvObjectGetChild(service, "end_handle", 0));
uint32_t err_code;
err_code = sd_ble_gattc_characteristics_discover(m_central_conn_handle, &range);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
#else
jsExceptionHere(JSET_ERROR, "Unimplemented");
#endif
}
/*JSON{
"type": "class",
"class" : "BLECharacteristic"
}
**Note:** This is only available on some devices
*/
/*JSON{
"type" : "method",
"class" : "BLECharacteristic",
"name" : "write",
"generate" : "jswrap_nrf_blecharacteristic_write",
"params" : [
["data","JsVar","The data to write"]
]
}
**Note:** This is only available on some devices
*/
void jswrap_nrf_blecharacteristic_write(JsVar *characteristic, JsVar *data) {
#if CENTRAL_LINK_COUNT>0
if (m_central_conn_handle == BLE_CONN_HANDLE_INVALID)
return jsExceptionHere(JSET_ERROR, "Not Connected");
JSV_GET_AS_CHAR_ARRAY(dataPtr, dataLen, data);
if (!dataPtr) return;
const ble_gattc_write_params_t write_params = {
.write_op = BLE_GATT_OP_WRITE_CMD,
.flags = BLE_GATT_EXEC_WRITE_FLAG_PREPARED_WRITE,
.handle = jsvGetIntegerAndUnLock(jsvObjectGetChild(characteristic, "handle_value", 0)),
.offset = 0,
.len = dataLen,
.p_value = (uint8_t*)dataPtr
};
uint32_t err_code;
err_code = sd_ble_gattc_write(m_central_conn_handle, &write_params);
if (err_code)
jsExceptionHere(JSET_ERROR, "Got BLE error code %d", err_code);
#else
jsExceptionHere(JSET_ERROR, "Unimplemented");
#endif
}
/*JSON{
"type" : "staticmethod",
"class" : "NRF",
"name" : "nfcURL",
"#ifdef" : "NRF52",
"generate" : "jswrap_nrf_nfcURL",
"params" : [
["url","JsVar","The URL string to expose on NFC, or `undefined` to disable NFC"]
]
}
Enables NFC and starts advertising the given URL. For example:
```
NRF.nrfURL("http://espruino.com");
```
**Note:** This is only available on nRF52-based devices
*/
void jswrap_nrf_nfcURL(JsVar *url) {
#ifdef USE_NFC
// Check for disabling NFC
if (jsvIsUndefined(url)) {
if (!nfcEnabled) return;
nfcEnabled = false;
jsvObjectSetChild(execInfo.hiddenRoot, "NFC", 0);
nfcStopEmulation();
nfcDone();
return;
}
if (!jsvIsString(url)) {
jsExceptionHere(JSET_TYPEERROR, "Expecting a String, got %t", url);
return;
}
uint32_t ret_val;
uint32_t err_code;
/* Set up NFC */
if (nfcEnabled) {
nfcStopEmulation();
} else {
ret_val = nfcSetup(nfc_callback, NULL);
if (ret_val != NFC_RETVAL_OK)
return jsExceptionHere(JSET_ERROR, "nfcSetup: Got NFC error code %d", ret_val);
nfcEnabled = true;
}
JSV_GET_AS_CHAR_ARRAY(urlPtr, urlLen, url);
if (!urlPtr || !urlLen)
return jsExceptionHere(JSET_ERROR, "Unable to get URL data");
uint8_t msg_buf[256];
uint32_t len = sizeof(msg_buf);
/* Encode URI message into buffer */
err_code = nfc_uri_msg_encode( NFC_URI_NONE, // TODO: could auto-prepend http/etc.
(uint8_t *)urlPtr,
urlLen,
msg_buf,
&len);
if (err_code != NRF_SUCCESS)
return jsExceptionHere(JSET_ERROR, "nfc_uri_msg_encode: NFC error code %d", err_code);
/* Create a flat string - we need this to store the URI data so it hangs around.
* Avoid having a static var so we have RAM available if not using NFC */
JsVar *flatStr = jsvNewFlatStringOfLength(len);
if (!flatStr)
return jsExceptionHere(JSET_ERROR, "Unable to create string with URI data in");
jsvObjectSetChild(execInfo.hiddenRoot, "NFC", flatStr);
uint8_t *flatStrPtr = (uint8_t*)jsvGetFlatStringPointer(flatStr);
jsvUnLock(flatStr);
memcpy(flatStrPtr, msg_buf, len);
/* Set created message as the NFC payload */
ret_val = nfcSetPayload( (char*)flatStrPtr, len);
if (ret_val != NFC_RETVAL_OK)
return jsExceptionHere(JSET_ERROR, "nfcSetPayload: NFC error code %d", ret_val);
/* Start sensing NFC field */
ret_val = nfcStartEmulation();
if (ret_val != NFC_RETVAL_OK)
return jsExceptionHere(JSET_ERROR, "nfcStartEmulation: NFC error code %d", ret_val);
#endif
}
/* ---------------------------------------------------------------------
* TESTING
* ---------------------------------------------------------------------
// Scanning, getting a service, characteristic, and then writing it
NRF.setScan(function(d) {
console.log(JSON.stringify(d,null,2));
});
NRF.setScan(false);
NRF.on('connect', function() { print("CONNECTED"); });
NRF.connect("f0:de:1d:13:9f:48")
NRF.on('servicesDiscover', function(services) {
print("services: "+JSON.stringify(services,null,2));
NRF.on('characteristicsDiscover', function(c) {
print("characteristics: "+JSON.stringify(c,null,2));
chars = c;
chars[0].write(255)
});
services[services.length-1].discoverCharacteristics();
});
NRF.discoverServices();
chars[0].write(0)
// ------------------------------ on BLE server (microbit) - allow display of data
NRF.setServices({
0xBCDE : {
0xABCD : {
value : "0", // optional
maxLen : 1, // optional (otherwise is length of initial value)
broadcast : false, // optional, default is false
readable : true, // optional, default is false
writable : true, // optional, default is false
onWrite : function(evt) { // optional
show(evt.data);
}
}
// more characteristics allowed
}
// more services allowed
});
*/
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