Hello!
everyone:
I use nRF51822 UART Demo(ble_app_uart),test uart interrupt receive data, baudrate is 38400.
if start advertising ,rx loss data ,else rx receive data perfect. so i think soft device disturb uart
interrupt.
uart configeration is:
void simple_uart_config( uint8_t rts_pin_number,
uint8_t txd_pin_number,
uint8_t cts_pin_number,
uint8_t rxd_pin_number,
bool hwfc)
{
/** @snippet [Configure UART RX and TX pin] */
nrf_gpio_cfg_output(txd_pin_number);
nrf_gpio_cfg_input (rxd_pin_number, NRF_GPIO_PIN_NOPULL);
NRF_UART0->PSELTXD = txd_pin_number;
NRF_UART0->PSELRXD = rxd_pin_number;
/** @snippet [Configure UART RX and TX pin] */
if (hwfc)
{
nrf_gpio_cfg_output(rts_pin_number);
nrf_gpio_cfg_input (cts_pin_number, NRF_GPIO_PIN_NOPULL);
NRF_UART0->PSELCTS = cts_pin_number;
NRF_UART0->PSELRTS = rts_pin_number;
NRF_UART0->CONFIG = (UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos);
}
NRF_UART0->BAUDRATE = (UART_BAUDRATE_BAUDRATE_Baud115200 <<
UART_BAUDRATE_BAUDRATE_Pos);
NRF_UART0->ENABLE = (UART_ENABLE_ENABLE_Enabled <<
UART_ENABLE_ENABLE_Pos);
NRF_UART0->TASKS_STARTTX = 1;
NRF_UART0->TASKS_STARTRX = 1;
NRF_UART0->EVENTS_RXDRDY = 0;
}
uart interrupt handler is:
void UART0_IRQHandler(void)
{
if (NRF_UART0->EVENTS_RXDRDY != 0)
{
//res=(uint8_t)NRF_UART0->RXD;
NRF_UART0->EVENTS_RXDRDY = 0; //
USART0_RX_BUF[USART0_RX_STA++] =(uint8_t)NRF_UART0->RXD;
}
}
