Thanks in advanced. Platform is: nrf52832-qfaa, SDK_17.0.2. I use microusb interface as multiple port for charging and uart I/O. I always get APP_UART_COMMUNICATION_ERROR when cable plug/unplug:
static void uart_event_handle(app_uart_evt_t * p_event)
{
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = 11,
.tx_pin_no = 12,
.rts_pin_no = 17,
.cts_pin_no = 18,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
256,
256,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
I think it is nothing special to codes. Level of rx pin 11 is updated suddenly when cable plug/unplug, which causes this error. I try to pullup or pulldown rx pin 11 at the beginning, it's useless, and trigger an other no_mem error. Would experts help me?
