Can't instantiate uart driver

[acha]

Hello all,

I try to instantiate an uart driver using NRF_DRV_UART_INSTANCE macro, but I got the following error :

sdk/components/drivers_nrf/uart/nrf_drv_uart.h:97:1: error: invalid conversion from 'void*' to 'NRF_UARTE_Type*' [-fpermissive]
 }
 ^
drivers/uart.hpp:41:27: note: in expansion of macro 'NRF_DRV_UART_INSTANCE'
     nrf_drv_uart_t uart = NRF_DRV_UART_INSTANCE(0);
                           ^

bellow is my code :

#include "nrf_drv_uart.h"
#include "app_error.h"
#include "nrf.h"

void uartEventHandler(nrf_drv_uart_evt_type_t *p_event)
{}

void initUART()
{
    nrf_drv_uart_t uart = NRF_DRV_UART_INSTANCE(0);
    uint32_t err_code;
    nrf_drv_uart_config_t uart_cfg;

    uart_cfg.pseltxd=RX_PIN_NUMBER;
    uart_cfg.pselrxd=TX_PIN_NUMBER;
    uart_cfg.pselcts=RTS_PIN_NUMBER;
    uart_cfg.pselrts=CTS_PIN_NUMBER;
    uart_cfg.hwfc=UART_CONFIG_HWFC_Disabled;
    uart_cfg.parity=false;
    uart_cfg.baudrate=UART_BAUDRATE_BAUDRATE_Baud115200;
    uart_cfg.use_easy_dma = true;

    err_code = nrf_drv_uart_init(&uart, &uart_cfg, uartEventHandler);
    nrf_drv_uart_rx_enable(&uart_cfg);
}

thank you in advance for help ! there is my sdk config file : sdk_config.h my toolchain : arm-gcc-none-eabi-4.9-2015q3. my main.cpp file : main.cpp

[Petter Myhre]

You should do something like this:

#include "nrf_drv_uart.h"

const nrf_drv_uart_t uart = NRF_DRV_UART_INSTANCE(0);

void uart_event_handler(nrf_drv_uart_event_t * p_event, void * p_context)
{
}

void initUART()
{
    uint32_t err_code;
    nrf_drv_uart_config_t uart_cfg;

    uart_cfg.pseltxd        = RX_PIN_NUMBER;
    uart_cfg.pselrxd        = TX_PIN_NUMBER;
    uart_cfg.pselcts        = RTS_PIN_NUMBER;
    uart_cfg.pselrts        = CTS_PIN_NUMBER;
    uart_cfg.hwfc           = NRF_UART_HWFC_DISABLED;
    uart_cfg.parity         = NRF_UART_PARITY_EXCLUDED;
    uart_cfg.baudrate       = NRF_UART_BAUDRATE_115200;
    uart_cfg.use_easy_dma   = true;

    err_code = nrf_drv_uart_init(&uart, &uart_cfg, uart_event_handler);
    APP_ERROR_CHECK(err_code);
    nrf_drv_uart_rx_enable(&uart);
}

[acha]

hello, that's compile, I also modify this code part :

typedef struct
{
    union
    {
#if (defined(UART_IN_USE) || (UART_ENABLED == 0))
    NRF_UART_Type * p_uart;   ///< Pointer to a structure with UART registers.
#endif
#if (defined(UARTE_IN_USE))
    NRF_UARTE_Type * p_uarte; ///< Pointer to a structure with UARTE registers.
#endif

    } reg;
    uint8_t drv_inst_idx;     ///< Driver instance index.
} nrf_drv_uart_t;

and I suppress the p_uart = in the NRF_DRV_UART_INSTANCE macro. As I said, the program compile, but it didn't work, this is my main function :

#define BSP_UART_SUPPORT #include "bsp.h" #include "sdk_config.h" #include "nrf_delay.h"

#include "nrf_drv_uart.h"

const nrf_drv_uart_t uart_test = NRF_DRV_UART_INSTANCE(0);

void uart_event_handler(nrf_drv_uart_event_t * p_event, void * p_context) { //static uint8_t rec_byte=0; switch(p_event->type) { case NRF_DRV_UART_EVT_RX_DONE:

    break;

    case NRF_DRV_UART_EVT_ERROR:

    default:
    break;
}

}

int main(void) {

/*Parameters for uart driver*/
uint32_t err_code;
nrf_drv_uart_config_t uart_cfg;

uart_cfg.pseltxd        = RX_PIN_NUMBER;
uart_cfg.pselrxd        = TX_PIN_NUMBER;
uart_cfg.pselcts        = RTS_PIN_NUMBER;
uart_cfg.pselrts        = CTS_PIN_NUMBER;
uart_cfg.hwfc           = NRF_UART_HWFC_DISABLED;
uart_cfg.parity         = NRF_UART_PARITY_EXCLUDED;
uart_cfg.baudrate       = NRF_UART_BAUDRATE_115200;
uart_cfg.use_easy_dma   = true;

err_code = nrf_drv_uart_init(&uart_test,&uart_cfg,uart_event_handler);
APP_ERROR_CHECK(err_code);
nrf_drv_uart_rx_enable(&uart_test);
uint8_t test[4]={0,255,0,255};
static uint8_t i=0;

while( true )
{
  while(i<4)
  {
      err_code = nrf_drv_uart_tx(&uart_test, &test[i], 1);
      if(err_code ==NRF_SUCCESS )
      {
      }
      nrf_delay_ms(1000);
      i++;
  }
  i=0;
};
return 0;

}

in the oscilloscope, I don't have any signal in Tx output pin :/