reflow-oven-control-sw/stm-firmware/syscalls.c

42 lines
810 B
C

#include <stm-periph/uart.h>
char* _sbrk(int incr) {
extern char heap_low; // Defined by the linker
extern char heap_top;
static char *heap_end;
char *prev_heap_end;
if (heap_end == 0) {
heap_end = &heap_low;
}
prev_heap_end = heap_end;
if (heap_end + incr > &heap_top) {
return 0;
}
heap_end += incr;
return (char*) prev_heap_end;
}
int _isatty(int fd) {
return 1;
}
int _close(int fd) {
return 0;
}
int _open(int fd) {
return 0;
}
int _fstat(void) {
return 0;
}
int _lseek(void) {
return 0;
}
int _read(void) {
return 0;
}
int _write(int fd, const void *buf, int count) {
uart_send_array((char*)buf, count);
return count;
}