I'm transferring the BLE and TWI code from nRF52 DK to the BC805M evaluation kit. BC805M schematic is given here. Note: BC805M uses nRF52805 Soc.
If I use the TWI SCL = pin 27 and SDA = 26 pin (these 2 pins exist on nRF52 Dk, but doesn't exist on BC805M), I could see the BLE signal on my phone "nRF Connect" app.
However, when I change the SCL = pin 16, SDA = pin 12 on BC805M (see below code), BLE signal disappears.
Any idea, please? Thanks!
/**
* @brief TWI initialization.
*/
void twi_init (void)
{
// Structure for the TWI master driver instance configuration.
const nrf_drv_twi_config_t twi_config = {
.scl = 27, // I want to use SCL = Pin 16 on BC805M EK, but BLE signal disappears (BLE signal exists if I use SCL_PIN=27)
.sda = 26, // I want to useSDA = Pin 12 on BC805M EK, but BLE signal disappears (BLE signal exists if I use SDA_PIN=26)
.frequency = NRF_DRV_TWI_FREQ_100K, // Options: 100K, 250K, 400K
.interrupt_priority = APP_IRQ_PRIORITY_HIGH,
.clear_bus_init = false
};
// Initialize the TWI and check if there is any error
ret_code_t err_code_twi_init;
err_code_twi_init = nrf_drv_twi_init(&m_twi, &twi_config, twi_handler, NULL);
APP_ERROR_CHECK(err_code_twi_init);
// After we initialize the TWI, we need to enable the TWI immediately
nrf_drv_twi_enable(&m_twi);
}
