uart_as_stdio.cpp

00001 /*
00002  * mbed Application program
00003  *      Redirect Standard Input/Output
00004  *
00005  * Copyright (c) 2021 Kenji Arai / JH1PJL
00006  *  http://www7b.biglobe.ne.jp/~kenjia/
00007  *  https://os.mbed.com/users/kenjiArai/
00008  *      Created:    January   13th, 2021
00009  *      Revised:    January   14th, 2021
00010  */
00011 
00012 //  Include --------------------------------------------------------------------
00013 #include "mbed.h"
00014 
00015 //  Definition -----------------------------------------------------------------
00016 
00017 //  Constructor ----------------------------------------------------------------
00018 static BufferedSerial pc(USBTX, USBRX, 115200);
00019 
00020 //  RAM ------------------------------------------------------------------------
00021 
00022 //  ROM / Constant data --------------------------------------------------------
00023 
00024 //  Function prototypes --------------------------------------------------------
00025 
00026 //------------------------------------------------------------------------------
00027 //  Control Program
00028 //------------------------------------------------------------------------------
00029 uint8_t readable()
00030 {
00031     return pc.readable();
00032 }
00033 
00034 void putc(uint8_t c)
00035 {
00036     char dt[4];
00037     dt[0] = (char)c;
00038     pc.write(dt, 1);
00039 }
00040 
00041 uint8_t getc()
00042 {
00043     char dt[4];
00044     pc.read(dt, 1);
00045     return (uint8_t)dt[0];
00046 }