MNRS-BM-BSP/libwrap/sys/write.c

/* See LICENSE of license details. */

#include <stdint.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>

#include "platform.h"
#include "stub.h"
#include "weak_under_alias.h"

ssize_t __wrap_write(int fd, const void* ptr, size_t len)
{
    const uint8_t * current = (const uint8_t *)ptr;
    if (isatty(fd)) {
        for (size_t jj = 0; jj < len; jj++) {
#if defined(BOARD_ehrenberg)
            while (uart_get_tx_free(uart)==0) ;
            uart_write(uart, current[jj]);
            if (current[jj] == '\n') {
                while (uart_get_tx_free(uart)==0) ;
                uart_write(uart, '\r');
            }
#else
            while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
            UART0_REG(UART_REG_TXFIFO) = current[jj];

            if (current[jj] == '\n') {
                while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
                UART0_REG(UART_REG_TXFIFO) = '\r';
            }
#endif
        }
        return len;
    }

    return _stub(EBADF);
}
weak_under_alias(write);