32 #if defined(__IAR_SYSTEMS_ICC__)
33 size_t __write(
int handle,
const unsigned char *buf,
size_t bufsize);
34 size_t __read(
int handle,
unsigned char *buf,
size_t bufsize);
36 #elif defined(__CC_ARM)
43 int fputc(
int ch, FILE *f);
51 #elif defined(__GNUC__)
56 int __io_putchar(
int ch);
62 int __io_getchar(
void);
65 #error "Toolchain not supported"