TGC-VP/fw/bsp/libwrap/sys/write.c

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2022-04-11 09:22:28 +02:00
/* 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 char *)ptr;
if (isatty(fd)) {
for (size_t jj = 0; jj < len; jj++) {
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';
}
}
return len;
}
return _stub(EBADF);
}
weak_under_alias(write);