Hello,
I have to send 15 bytes on uart of nRF52832 (nordic micro is the receiver), but I have APP_UART_COMMUNICATION_ERROR. If I send 5 bytes everything works fine, if I insert a delay (1ms) between bytes (in the packet of 15) everything works fine. But if I send all bytes consecutively (with no delay intra bytes) I have the error. The initialization of uart is:
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = PIN_P0_05_RXD,
.tx_pin_no = PIN_P0_06_TXD,
.rts_pin_no = NULL,
.cts_pin_no = NULL,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = UART_BAUDRATE_BAUDRATE_Baud250000
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
nrf_gpio_cfg_input(PIN_P0_05_RXD,NRF_GPIO_PIN_PULLUP);
BYTE_BT_TEL = 0;
}
The uart event handler is:
/**@brief Function for handling app_uart events.
*
* @details This function will receive a single character from the app_uart module and append it to
* a string. The string will be be sent over BLE when the last character received was a
* 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
//static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
//static uint8_t index = 0;
uint32_t err_code;
uint8_t dato;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
//UNUSED_VARIABLE(app_uart_get(&data_array[index]));
UNUSED_VARIABLE(app_uart_get(&dato));
// NRF_LOG_INFO("OK RX");
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;
}
}
#define UART_TX_BUF_SIZE 256
#define UART_RX_BUF_SIZE 256
I'm using nRF5_SDK_15.0.0. The softdevice is switched off.
What could be the problem?
Best regards
