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EV_I2C1 and EV_I2C2 in i2c setup

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This commit is contained in:
Rhys Williams 2017-01-06 21:04:22 +13:00
parent 6b50c2eeab
commit d4adfe58a9
1 changed files with 22 additions and 5 deletions
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27
targets/esp32/i2c.c
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@ -76,17 +76,34 @@ static esp_err_t checkError( char * caller, esp_err_t ret ) {
return ret;
}
int getI2cFromDevice( IOEventFlags device ) {
switch(device) {
case EV_I2C1: return I2C_NUM_0;
case EV_I2C2: return I2C_NUM_1;
default: return -1;
}
}
/** Set-up I2C master for ESP32, default pins are SCL:21, SDA:22. Only device I2C1 is supported
* and only master mode. */
void jshI2CSetup(IOEventFlags device, JshI2CInfo *info) {
if (device != EV_I2C1) {
jsError("Only I2C1 supported");
int i2c_master_port = getI2cFromDevice(device);
if (i2c_master_port == -1) {
jsError("Only I2C1 and I2C2 supported");
return;
}
Pin scl = info->pinSCL != PIN_UNDEFINED ? info->pinSCL : 21;
Pin sda = info->pinSDA != PIN_UNDEFINED ? info->pinSDA : 22;
Pin scl;
Pin sda;
if ( i2c_master_port == I2C_NUM_0 ) {
scl = info->pinSCL != PIN_UNDEFINED ? info->pinSCL : 21;
sda = info->pinSDA != PIN_UNDEFINED ? info->pinSDA : 22;
}
// Unsure on what to default these pins to?
if ( i2c_master_port == I2C_NUM_1 ) {
scl = info->pinSCL != PIN_UNDEFINED ? info->pinSCL : 16;
sda = info->pinSDA != PIN_UNDEFINED ? info->pinSDA : 17;
}
int i2c_master_port = I2C_NUM_1;
i2c_config_t conf;
conf.mode = I2C_MODE_MASTER;
conf.sda_io_num = pinToESP32Pin(sda);