bool iotjs_i2c_open(iotjs_i2c_t* i2c) {
IOTJS_VALIDATED_STRUCT_METHOD(iotjs_i2c_t, i2c)
iotjs_i2c_platform_data_t* platform_data = _this->platform_data;
IOTJS_ASSERT(platform_data);
// Init i2c context
platform_data->i2c_context = iotbus_i2c_init(platform_data->bus);
if (!platform_data->i2c_context) {
DLOG("%s: cannot open I2C", __func__);
return false;
}
// Set i2c frequency
int ret =
iotbus_i2c_set_frequency(platform_data->i2c_context, IOTBUS_I2C_STD);
if (ret < 0) {
DLOG("%s: cannot set frequency", __func__);
return false;
}
if (iotbus_i2c_set_address(platform_data->i2c_context, _this->address) < 0) {
DLOG("%s: cannot set address", __func__);
return false;
}
return true;
}
/******************************
I2C TEST
******************************/
int systemio_test_i2c(char *failstr)
{
// i2c read write test
int result = SYSIO_RESULT_FAIL;
int fail_flag = 0;
int ret = 0;
iotbus_i2c_context_h hnd;
int bus_num = 1;
// changing addr and cmd depending on board
uint8_t addr = 0x08;
uint8_t cmd[2] = { 0x01, 0x02 };
hnd = iotbus_i2c_init(bus_num);
if (hnd == NULL) {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_init() fail \n");
REGISTER_FAIL_REASON("iotbus_i2c_init() fail", &fail_flag);
goto done;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_init() success \n");
}
ret = iotbus_i2c_set_frequency(hnd, IOTBUS_I2C_STD);
if (ret < 0) {
REGISTER_FAIL_REASON("iotbus_i2c_set_frequency() fail", &fail_flag);
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_set_frequency() fail \n");
//return ;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_set_frequency() success \n");
}
ret = iotbus_i2c_set_address(hnd, addr);
if (ret < 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_set_address() fail \n");
REGISTER_FAIL_REASON("iotbus_i2c_set_address() fail", &fail_flag);
//return ;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_set_address() success \n");
}
ret = iotbus_i2c_write(hnd, cmd, 2);
if (ret < 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_write() fail \n");
// REGISTER_FAIL_REASON("iotbus_i2c_write() fail", &fail_flag);
//return ;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_write() success \n");
}
uint8_t buf[10];
ret = iotbus_i2c_read(hnd, buf, 10);
if (ret < 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_read() fail \n");
// REGISTER_FAIL_REASON("iotbus_i2c_read() fail", &fail_flag);
//return ;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_read() success \n");
}
ret = iotbus_i2c_stop(hnd);
if (ret < 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_stop() fail \n");
REGISTER_FAIL_REASON("iotbus_i2c_stop() fail", &fail_flag);
//return ;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_i2c_stop() success \n");
}
done:
/* check if succeed */
if (fail_flag == 0) {
result = SYSIO_RESULT_SUCCESS;
}
return result;
}