mirror of
https://github.com/espruino/Espruino.git
synced 2025-12-08 19:06:15 +00:00
initial bootloader - small overhead, not working yet
This commit is contained in:
Gordon Williams
parent
aba44d39a7
commit
0ccac69c37
10
Makefile
10
Makefile
@ -31,6 +31,7 @@
|
||||
# DEBUG=1 # add debug symbols (-g)
|
||||
# RELEASE=1 # Force release-style compile (no asserts, etc)
|
||||
# SINGLETHREAD=1 # Compile single-threaded to make compilation errors easier to find
|
||||
# BOOTLOADER=1 # make the bootloader (not Espruino)
|
||||
|
||||
ifndef SINGLETHREAD
|
||||
MAKEFLAGS=-j5 # multicore
|
||||
@ -280,6 +281,13 @@ src/jsdevices.c \
|
||||
$(WRAPPERFILE)
|
||||
CPPSOURCES =
|
||||
|
||||
ifdef BOOTLOADER
|
||||
WRAPPERSOURCES =
|
||||
SOURCES = \
|
||||
targets/stm32_boot/main.c
|
||||
OPTIMIZEFLAGS=-Os
|
||||
endif
|
||||
|
||||
ifdef SAVE_ON_FLASH
|
||||
DEFINES+=-DSAVE_ON_FLASH
|
||||
endif
|
||||
@ -701,11 +709,13 @@ DEFINES += -DFAKE_STDLIB
|
||||
# FAKE_STDLIB is for Espruino - it uses its own standard library so we don't have to link in the normal one + get bloated
|
||||
DEFINES += -DSTM32 -DUSE_STDPERIPH_DRIVER=1 -D$(CHIP) -D$(BOARD) -D$(STLIB)
|
||||
INCLUDE += -I$(ROOT)/targets/stm32
|
||||
ifndef BOOTLOADER
|
||||
SOURCES += \
|
||||
targets/stm32/main.c \
|
||||
targets/stm32/jshardware.c \
|
||||
targets/stm32/stm32_it.c
|
||||
endif
|
||||
endif
|
||||
|
||||
ifdef LINUX
|
||||
DEFINES += -DLINUX
|
||||
|
||||
184
targets/stm32_boot/main.c
Normal file
184
targets/stm32_boot/main.c
Normal file
@ -0,0 +1,184 @@
|
||||
/*
|
||||
* This file is part of Espruino, a JavaScript interpreter for Microcontrollers
|
||||
*
|
||||
* Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk>
|
||||
*
|
||||
* This Source Code Form is subject to the terms of the Mozilla Public
|
||||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||||
*
|
||||
* ----------------------------------------------------------------------------
|
||||
* Bootloader entry point
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
#include "platform_config.h"
|
||||
#include "usb_utils.h"
|
||||
#include "usb_lib.h"
|
||||
#include "usb_desc.h"
|
||||
#include "usb_pwr.h"
|
||||
#include "usb_istr.h"
|
||||
#include "jshardware.h"
|
||||
|
||||
#define ACK (0x79)
|
||||
#define NACK (0x1F)
|
||||
|
||||
#define BUFFERMASK 1023
|
||||
char rxBuffer[BUFFERMASK+1];
|
||||
int rxHead=0, rxTail=0;
|
||||
char txBuffer[BUFFERMASK+1];
|
||||
int txHead=0, txTail=0;
|
||||
|
||||
uint16_t stmPin(Pin ipin) {
|
||||
JsvPinInfoPin pin = pinInfo[ipin].pin;
|
||||
if (pin==JSH_PIN0 ) return GPIO_Pin_0;
|
||||
if (pin==JSH_PIN1 ) return GPIO_Pin_1;
|
||||
if (pin==JSH_PIN2 ) return GPIO_Pin_2;
|
||||
if (pin==JSH_PIN3 ) return GPIO_Pin_3;
|
||||
if (pin==JSH_PIN4 ) return GPIO_Pin_4;
|
||||
if (pin==JSH_PIN5 ) return GPIO_Pin_5;
|
||||
if (pin==JSH_PIN6 ) return GPIO_Pin_6;
|
||||
if (pin==JSH_PIN7 ) return GPIO_Pin_7;
|
||||
if (pin==JSH_PIN8 ) return GPIO_Pin_8;
|
||||
if (pin==JSH_PIN9 ) return GPIO_Pin_9;
|
||||
if (pin==JSH_PIN10) return GPIO_Pin_10;
|
||||
if (pin==JSH_PIN11) return GPIO_Pin_11;
|
||||
if (pin==JSH_PIN12) return GPIO_Pin_12;
|
||||
if (pin==JSH_PIN13) return GPIO_Pin_13;
|
||||
if (pin==JSH_PIN14) return GPIO_Pin_14;
|
||||
if (pin==JSH_PIN15) return GPIO_Pin_15;
|
||||
return GPIO_Pin_0;
|
||||
}
|
||||
|
||||
GPIO_TypeDef *stmPort(Pin pin) {
|
||||
JsvPinInfoPort port = pinInfo[pin].port;
|
||||
if (port == JSH_PORTA) return GPIOA;
|
||||
if (port == JSH_PORTB) return GPIOB;
|
||||
if (port == JSH_PORTC) return GPIOC;
|
||||
if (port == JSH_PORTD) return GPIOD;
|
||||
if (port == JSH_PORTE) return GPIOE;
|
||||
if (port == JSH_PORTF) return GPIOF;
|
||||
#if defined(STM32F4)
|
||||
if (port == JSH_PORTG) return GPIOG;
|
||||
if (port == JSH_PORTH) return GPIOH;
|
||||
#endif
|
||||
return GPIOA;
|
||||
}
|
||||
|
||||
|
||||
void jshPinOutput(Pin pin, bool value) {
|
||||
GPIO_InitTypeDef GPIO_InitStructure;
|
||||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
|
||||
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||
GPIO_InitStructure.GPIO_Pin = stmPin(pin);
|
||||
GPIO_Init(stmPort(pin), &GPIO_InitStructure);
|
||||
if (value)
|
||||
stmPort(pin)->BSRR = stmPin(pin);
|
||||
else
|
||||
stmPort(pin)->BRR = stmPin(pin);
|
||||
}
|
||||
|
||||
void USB_LP_CAN1_RX0_IRQHandler(void)
|
||||
{
|
||||
USB_Istr();
|
||||
}
|
||||
|
||||
unsigned int SysTickUSBWatchdog = 0;
|
||||
|
||||
void jshKickUSBWatchdog() {
|
||||
SysTickUSBWatchdog = 0;
|
||||
}
|
||||
|
||||
void SysTick_Handler(void) {
|
||||
if (SysTickUSBWatchdog < SYSTICKS_BEFORE_USB_DISCONNECT) {
|
||||
SysTickUSBWatchdog++;
|
||||
}
|
||||
}
|
||||
|
||||
bool jshIsUSBSERIALConnected() {
|
||||
return SysTickUSBWatchdog < SYSTICKS_BEFORE_USB_DISCONNECT;
|
||||
}
|
||||
|
||||
int jshGetCharToTransmit(IOEventFlags device) {
|
||||
if (txHead == txTail) return -1;
|
||||
char d = txBuffer[txTail];
|
||||
txTail = (txTail+1) & BUFFERMASK;
|
||||
return d;
|
||||
}
|
||||
|
||||
void jshPushIOCharEvent(IOEventFlags channel, char charData) {
|
||||
rxBuffer[rxHead] = charData;
|
||||
rxHead = (rxHead+1) & BUFFERMASK;
|
||||
}
|
||||
|
||||
bool jshHasEventSpaceForChars(int n) {
|
||||
return true;
|
||||
}
|
||||
|
||||
int getc() {
|
||||
if (rxHead == rxTail) return -1;
|
||||
char d = rxBuffer[rxTail];
|
||||
rxTail = (rxTail+1) & BUFFERMASK;
|
||||
return d;
|
||||
}
|
||||
|
||||
void putc(char charData) {
|
||||
txBuffer[txHead] = charData;
|
||||
txHead = (txHead+1) & BUFFERMASK;
|
||||
}
|
||||
|
||||
|
||||
|
||||
int main(void){
|
||||
|
||||
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
|
||||
RCC_APB2PeriphClockCmd(
|
||||
RCC_APB2Periph_ADC1 |
|
||||
RCC_APB2Periph_GPIOA |
|
||||
RCC_APB2Periph_GPIOB |
|
||||
RCC_APB2Periph_GPIOC |
|
||||
RCC_APB2Periph_GPIOD |
|
||||
RCC_APB2Periph_GPIOE |
|
||||
RCC_APB2Periph_GPIOF |
|
||||
RCC_APB2Periph_GPIOG |
|
||||
RCC_APB2Periph_AFIO, ENABLE);
|
||||
RCC_PCLK1Config(RCC_HCLK_Div8); // PCLK1 must be >8 Mhz for USB to work
|
||||
RCC_PCLK2Config(RCC_HCLK_Div16);
|
||||
/* System Clock */
|
||||
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);
|
||||
SysTick_Config(SYSTICK_RANGE-1); // 24 bit
|
||||
NVIC_SetPriority(SysTick_IRQn, 0); // Super high priority
|
||||
|
||||
|
||||
#ifdef USB
|
||||
#if defined(STM32F1) || defined(STM32F3)
|
||||
USB_Init_Hardware();
|
||||
USB_Init();
|
||||
#endif
|
||||
#ifdef STM32F4
|
||||
USBD_Init(&USB_OTG_dev,
|
||||
#ifdef USE_USB_OTG_HS
|
||||
USB_OTG_HS_CORE_ID,
|
||||
#else
|
||||
USB_OTG_FS_CORE_ID,
|
||||
#endif
|
||||
&USR_desc,
|
||||
&USBD_CDC_cb,
|
||||
&USR_cb);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
int flashy = 0;
|
||||
|
||||
while (1) {
|
||||
if (!jshIsUSBSERIALConnected()) {
|
||||
jshPinOutput(LED2_PININDEX, 0);
|
||||
// reset, led off
|
||||
} else {
|
||||
jshPinOutput(LED2_PININDEX, ((flashy++)&0x1000)!=0);
|
||||
// flash led
|
||||
int d = getc();
|
||||
if (d>=0) putc(d);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user