#include "board_init.h"
#include "hal_uart.h"

int _write(int fd, char *ptr, int len) {
    int i = 0;

    if (fd > 2) {
        return -1;
    }

    while (*ptr && (i < len)) {
        while (0u == (UART_STATUS_TX_EMPTY & UART_GetStatus(BOARD_DEBUG_UART_PORT))) {
        }
        UART_PutData(BOARD_DEBUG_UART_PORT, (uint8_t)(*ptr));
        i++;
        ptr++;
    }

    return i;
}

int _read(int fd, char *ptr, int len) {
    int my_len;

    if (fd > 2) {
        return -1;
    }

    my_len = 0;
    while (len > 0) {
        while (0u == (UART_STATUS_RX_DONE & UART_GetStatus(BOARD_DEBUG_UART_PORT))) {
        }
        *ptr = UART_GetData(BOARD_DEBUG_UART_PORT);
        len--;
        my_len++;

        if ((*ptr == '\r') || (*ptr == '\n') || (*ptr == '\0')) {
            break;
        }

        ptr++;
    }

    return my_len;
}