Data transfer and receive with RA6M3

#include <stdint.h>

#include "tx_api.h"

#include "hal_data.h"

#include "r_sci_uart.h"

#include "rfid.h"

#include "SEGGER_RTT/SEGGER_RTT.h"

#define TRANSFER_LENGTH 128

uint8_t g_rfid_src[TRANSFER_LENGTH];

uint8_t g_rfid_dest[TRANSFER_LENGTH];

uint32_t g_rfid_transfer_complete = 0;

uint32_t g_rfid_receive_complete = 0;

void rfid_entry(void)

{

fsp_err_t err = R_SCI_UART_Open(&g_uart_ctrl, &g_uart_cfg);

SEGGER_RTT_printf(0, "Err: %d\n",err);

assert(FSP_SUCCESS == err);

err=0;

SEGGER_RTT_printf(0, "ErrR: %d\n",err);

char single_char = 'A';

err = R_SCI_UART_Write(&g_uart_ctrl, (uint8_t *)&single_char, 1);

SEGGER_RTT_printf(0, "Err1: %d\n",err);

assert(FSP_SUCCESS == err);

// Wait for transfer to complete

uint32_t timeout = 10000000;

while (g_rfid_transfer_complete == 0 && timeout > 0)

{

timeout--;

}

if (timeout == 0)

{

SEGGER_RTT_printf(0, "Transfer timeout occurred\n");

// Handle the timeout situation

}

SEGGER_RTT_printf(0, "Transmitted: %d\n", g_rfid_transfer_complete);

// Reset the transfer complete flag

g_rfid_transfer_complete = 0;

// Start the read operation

err = R_SCI_UART_Read(&g_uart_ctrl, g_rfid_dest, TRANSFER_LENGTH);

SEGGER_RTT_printf(0, "Err2: %d\n",err);

assert(FSP_SUCCESS == err);

// Wait for receive to complete

SEGGER_RTT_printf(0, "Received: %d\n", g_rfid_dest);

// Reset the receive complete flag

g_rfid_receive_complete = 0;

}

void rfid_callback(uart_callback_args_t * p_args)

{

switch (p_args->event)

{

case UART_EVENT_TX_COMPLETE:

{

g_rfid_transfer_complete = 1;

break;

}

case UART_EVENT_RX_COMPLETE:

{

g_rfid_receive_complete = 1;

break;

}

default:

{

break;

}

}
}
Output:
00> Err: 0
00> ErrR: 0
00> Err1: 0
00> Transmitted: 1
00> Err2: 0
00> Received: 536744216