hello
i am using nrf52832, with ble (s132 softdevice), pwm drv, saadc drcm uart, and using app_timers
i have added the twi drv to work with an expander for start.
this is how my function looks like
void i2c_transmit(uint8_t address, uint8_t * data)
{
ret_code_t err_code = nrf_drv_twi_tx(&m_twi, address, data, sizeof(data), true);
APP_ERROR_CHECK(err_code);
}
this is where i call the function:
uint8_t ex_config_reg_init_val = EXPANDER_CONFIG_PIN_AS_OUTPUT_MASK; //configur expander pins as output via configure register i2c_transmit(EXPANDER_CONFIGURATION_REGISTER_ADDRESS, &ex_config_reg_init_val); // if send was success -> i2c_transmit(EXPANDER_OUTPUT_PORT_REGISTER_ADDRESS, &expander_data_byte);
first message gets ok, second fails (error 17) -> [is there some file that shows what every error number is refering to ??? i could not find ]
this is my init:
void i2c_init(void)
{
ret_code_t err_code;
const nrf_drv_twi_config_t twi_config = {
.scl = ARDUINO_SCL_PIN,
.sda = ARDUINO_SDA_PIN,
.frequency = NRF_DRV_TWI_FREQ_100K,
.interrupt_priority = APP_IRQ_PRIORITY_HIGH,
.clear_bus_init = false
};
err_code = nrf_drv_twi_init(&m_twi, &twi_config, twi_handler, NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_twi_enable(&m_twi);
}
i have read in this forom that i should config some event handler in my init but it is not clear to me what should be done in this event handler because i have nointtention to creat some loop that waits for some 'OK' event
also, when i run in debug mode i see that i am not entering the event handler at all so it is not so clear to me what i am doing wrong ???
how can i solve this ?
Best regards
Ziv
