#include <stdint.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <stdarg.h> void (*log_out)(uint8_t *,uint32_t len)=USART2_send; static char printBuf[256] = {0U}; int t_log(const char *fmt_s, ...) { va_list aptr; int ret; va_start(aptr,fmt_s); ret = vsprintf(printBuf, fmt_s, aptr); va_end(aptr); if(log_out!=T_NULL)log_out((uint8_t*)printBuf,strlen(printBuf)); return(ret); } printf已经out了, 你这个效率很低
