/tags/arm/ Recent content in arm on Shylock Hg Hugo -- gohugo.io en-us Wed, 23 May 2018 00:00:00 +0000 /post/2018/05/23/arm-microlib-implement/ Wed, 23 May 2018 00:00:00 +0000 /post/2018/05/23/arm-microlib-implement/ stdio.h int fgetc(FILE * stream){ if(stdin == stream){ //< implement input one character char c = HAL_UART_Receive(); return c; } return EOF; } int fputc(int ch, FILE *f){ if(stdout == stream){ //< implement output one character HAL_UART_Transmit(ch); return ch; }else if(stderr == stream){ HAL_UART_Transmit(ch); return ch; } return EOF; } int ferror(FILE * f){ switch(f){ case stdin: break; case stdout: break; case stderr: break; default: return EOF; } } assert.