micropython/minimal/uart_core.c

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#include <unistd.h>
#include "py/mpconfig.h"
/*
* Core UART functions to implement for a port
*/
// Receive single character
int mp_hal_stdin_rx_chr(void) {
unsigned char c = 0;
#if MICROPY_MIN_USE_STDOUT
int r = read(0, &c, 1);
(void)r;
#endif
return c;
}
// Send string of given length
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
#if MICROPY_MIN_USE_STDOUT
int r = write(1, str, len);
(void)r;
#endif
}