Hi guys, I'm working on an nRF52832 chip (PCA 10040) with softdevice s132 (v3.0.0) and I'm facing with a big problem; in my project I use an spi (instance index 0) and an i2c bus (instance index 1) with a UART, used for debug (instance index 0). Both spi and uart work perfectly but the i2c (or twi) doesn't work at all. I read on this forum many other people had problems like this trying to work with i2c and softdevice so I'm wondering if anyone could help me. This is my simple code for the init:
const nrf_drv_twi_t i2c_bus_instance = NRF_DRV_TWI_INSTANCE(1);
uint32_t err_code;
const nrf_drv_twi_config_t twi_config = {
.scl = RACE_I2C_CLOCK,
.sda = RACE_I2C_DATA,
.frequency = NRF_TWI_FREQ_100K,
.interrupt_priority = APP_IRQ_PRIORITY_HIGH
};
/* i2c_event_handler è necessaria perché in caso contrario le istruzioni I2C diventerebbero bloccanti */
err_code = nrf_drv_twi_init(&i2c_bus_instance, &twi_config, i2c_event_handler, NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_twi_enable(&i2c_bus_instance);
for the i2c handler:
if ((p_event->type == NRF_DRV_TWI_EVT_DONE) && (p_event->xfer_desc.type == NRF_DRV_TWI_XFER_TX))
{
xfer_completed = true;
set_gpio_pin(TEST_PIN, false);
}
else
{
xfer_completed = false;
}
and the main:
uint32_t err_code;
bool erase_bonds;
uint8_t data[2] = {DRV2604L_MODE_REG, 0x00};
// Initialize.
err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
timers_init();
buttons_leds_init(&erase_bonds);
gpio_init();
ble_stack_init();
peer_manager_init(erase_bonds);
if (erase_bonds == true)
{
NRF_LOG_INFO("Bonds erased!\r\n");
}
gap_params_init();
advertising_init();
services_init();
conn_params_init();
// Start execution.
NRF_LOG_INFO("Template started\r\n");
application_timers_start();
err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
spi_init(DISPLAY);
i2c_init();
// Abilitazione tutte le sorgenti di alimentazione
delay_ms(2000u);
set_gpio_pin(RACE_VCC_ENABLE_PIN, true);
set_gpio_pin(RACE_5V_ENABLE_PIN, true);
NRF_LOG_INFO("\r\n>>>>> START 'VCC' AND '+5V' VOLTAGE\r\n");
// Test su display
delay_ms(2000u);
drawInit(); // Init display
NRF_LOG_INFO("\r\n>>>>> CHECK DISPLAY - MUST BE COMPLETELY CLEAR !!!!\r\n");
delay_ms(4000u);
drawCheckDisplayPixel(); // Controllo pixel display
NRF_LOG_INFO("\r\n>>>>> CHECK DISPLAY - MUST BE COMPLETELY BLACK !!!!\r\n");
delay_ms(4000u);
drawInit(); // Pulizia display
// Test su vibrazione
//delay_ms(2000u);
set_gpio_pin(TEST_PIN, true);
err_code = nrf_drv_twi_tx(&i2c_bus_instance, 0x5A, data, 2, false);
APP_ERROR_CHECK(err_code);
// Enter main loop.
for (;;)
{
if (NRF_LOG_PROCESS() == false)
{
power_manage();
}
}
Please, could anyone suggest me any solution to solve my i2c problem ? Regards
