mongoose/examples/ESP8266_RTOS/user/esp_libc.c
Deomid Ryabkov 54403dfcbc cesanta/iot -> cesanta/mongoose-iot
PUBLISHED_FROM=d73a6fff78a063ffe5aaafe841e89e87e37f85d7
2016-04-26 13:30:05 +01:00

66 lines
1.6 KiB
C

/*
* Copyright (c) 2015 Cesanta Software Limited
* All rights reserved
*/
#include <ctype.h>
#include <sys/time.h>
#include <stdint.h>
#include <math.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "esp_common.h"
/* Makes fprintf(stdout) and stderr work. */
_ssize_t _write_r(struct _reent *r, int fd, void *buf, size_t len) {
if (fd == 1 || fd == 2) {
size_t i;
for (i = 0; i < len; i++) {
os_putc(((char *) buf)[i]);
}
return len;
}
return -1;
}
/*
* You'll need to implement _open_r and friends if you want file operations. See
* https://github.com/cesanta/mongoose-iot/blob/master/fw/platforms/esp8266/user/esp_fs.c
* for SPIFFS-based implementation.
*/
void abort(void) __attribute__((no_instrument_function));
void abort(void) {
/* cause an unaligned access exception, that will drop you into gdb */
*(int *) 1 = 1;
while (1)
; /* avoid gcc warning because stdlib abort() has noreturn attribute */
}
void _exit(int status) {
abort();
}
/*
* This will prevent counter wrap if time is read regularly.
* At least Mongoose poll queries time, so we're covered.
*/
int _gettimeofday_r(struct _reent *r, struct timeval *tp, void *tzp) {
static uint32_t prev_time = 0;
static uint32_t num_overflows = 0;
uint32_t time = system_get_time();
uint64_t time64 = time;
if (prev_time > 0 && time < prev_time) num_overflows++;
time64 += (((uint64_t) num_overflows) * (1ULL << 32));
tp->tv_sec = time64 / 1000000ULL;
tp->tv_usec = time64 % 1000000ULL;
prev_time = time;
return 0;
(void) r;
(void) tzp;
}