Test program for SoftSerial. TimerEvent function has bug for STM32 series Mbed. FRDM-64K works well without bug. This is a temporary solution avoid bug but not perfect.
Dependencies: BufferedSoftSerial
Diff: 1_main.cpp
- Revision:
- 0:98865e300cd5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/1_main.cpp Sun May 10 08:15:36 2020 +0000 @@ -0,0 +1,79 @@ +/* + * Mbed Application program + * SoftSerial(also BufferedSoftSerial) function test programs + * UART 3 channels + * (1) Mbed Serial communication line as "pc" + * (2) CPU another UART channel as "ser" + * (3) Software Serial channel as "dev" + * + * Copyright (c) 2020 Kenji Arai / JH1PJL + * http://www7b.biglobe.ne.jp/~kenjia/ + * https://os.mbed.com/users/kenjiArai/ + * Created: May 9th, 2020 + * Revised: May 10th, 2020 + */ + +/* + Tested board on OS5.15.3 + Nucleo-F446RE, Nucleo-L432KC + */ + +// Pre-selection -------------------------------------------------------------- +#include "select_example.h" +//#define EXAMPLE_1 +#ifdef EXAMPLE_1 +#warning "Select 1" + +// Include -------------------------------------------------------------------- +#include "mbed.h" +#include "BufferedSoftSerial.h" + +// Definition ----------------------------------------------------------------- +#define BEFFERED 1 + +// Constructor ---------------------------------------------------------------- +#if defined(TARGET_NUCLEO_L432KC) +DigitalOut test_point(D12); +Serial ser(D5, D4, 9600); +# if BEFFERED + BufferedSoftSerial dev(D6,D3); +# else + SoftSerial dev(D6,D3); +# endif +#elif defined(TARGET_NUCLEO_F446RE) +DigitalOut test_point(A0); +Serial ser(D8, D2, 9600); +# if BEFFERED + BufferedSoftSerial dev(D4,D3); +# else + SoftSerial dev(D4,D3); +# endif +#endif +Serial pc(USBTX,USBRX, 9600); + +// RAM ------------------------------------------------------------------------ + +// ROM / Constant data -------------------------------------------------------- + +// Function prototypes -------------------------------------------------------- + +//------------------------------------------------------------------------------ +// Control Program +//------------------------------------------------------------------------------ +/* + UART 3 channels + (1) Mbed Serial communication line as "pc" + (2) CPU another UART channel as "ser" + (3) Software Serial channel as "dev" + */ +int main() +{ + while(true) { + char c = pc.getc(); // get serial data + dev.putc(c); // send softserail line + ser.putc(c); // another UART + pc.putc(c); // echo back to PC + } +} + +#endif //#ifdef EXAMPLE_1