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Buffered Serial Port Driver for RTOS

Dependents:   nucleo_cannonball PiballNeoController

Buffered Serial Port Driver for RTOS

  • ISR driven, ring buffered IO operation
  • IO operations are idle waiting, don't waste time in RTOS :D
  • Can use external buffers
  • Based on mbed RawSerial

Example

SerialDriver Example

#include "SerialDriver.h"

SerialDriver pc(USBTX, USBRX);

int main()
{
    // setup serial port
    pc.baud(9600);
    
    // print some text
    pc.puts("This is just a string.\r\n");
    pc.printf("But this is a %s with integer %i and float %f.\r\n", "formatted text", 123, 0.456f);
    
    // now lets behave like a null modem 
    while(1)
       pc.putc(pc.getc());
}

Look at the API Documentation for more Examples.

Dependencies

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Import librarymbed-rtos

Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Last commit 04 Jul 2017 by mbed official

If you find a bug, please help me to fix it. Send me a message. You can help me a lot: Write a demo program that causes the bug reproducible.

Examples/Example_Bridge.cpp@8:903a4162a0d1, 2015-10-29 (annotated)

Committer:
BlazeX
Date:
Thu Oct 29 19:38:11 2015 +0000
Revision:
8:903a4162a0d1
Parent:
1:1464146bd7fb 
Beta Update: Could SerialDriver inherit RawSerial rather than SerialBase? Maybe, let's try!

Who changed what in which revision?

UserRevisionLine numberNew contents of line
BlazeX 0:cd0d79be0c1a 1 /// @file Example_Bridge.cpp
BlazeX 0:cd0d79be0c1a 2 /// @brief Forwarding every byte from USB to uart and vice versa
BlazeX 0:cd0d79be0c1a 3 ///
BlazeX 0:cd0d79be0c1a 4 /// - Uses SerialDriver with USBTX and USBRX.
BlazeX 0:cd0d79be0c1a 5 /// - Uses SerialDriver with p13 and p14.
BlazeX 0:cd0d79be0c1a 6 ///
BlazeX 0:cd0d79be0c1a 7 /// - LED1 indicates forwarding pc to uart works
BlazeX 0:cd0d79be0c1a 8 /// - LED2 indicates forwarding uart to pc works
BlazeX 0:cd0d79be0c1a 9 /// - LED4 indicates a parallel thread running
BlazeX 0:cd0d79be0c1a 10 ///
BlazeX 0:cd0d79be0c1a 11 /// - connect p13 with p14 to get a hardware null modem ;)
BlazeX 0:cd0d79be0c1a 12
BlazeX 0:cd0d79be0c1a 13 #if 0
BlazeX 0:cd0d79be0c1a 14
BlazeX 0:cd0d79be0c1a 15 #include "SerialDriver.h"
BlazeX 0:cd0d79be0c1a 16
BlazeX 0:cd0d79be0c1a 17 SerialDriver pc(USBTX, USBRX);
BlazeX 0:cd0d79be0c1a 18 SerialDriver uart(p13, p14);
BlazeX 0:cd0d79be0c1a 19 DigitalOut led1(LED1), led2(LED2), led4(LED4);
BlazeX 0:cd0d79be0c1a 20
BlazeX 0:cd0d79be0c1a 21 // This thread forwards from pc to uart
BlazeX 0:cd0d79be0c1a 22 void forwardPc(void const * argument)
BlazeX 0:cd0d79be0c1a 23 {
BlazeX 0:cd0d79be0c1a 24 // Sometimes You're the Hammer,
BlazeX 0:cd0d79be0c1a 25 while(1)
BlazeX 0:cd0d79be0c1a 26 {
BlazeX 0:cd0d79be0c1a 27 uart.putc(pc.getc());
BlazeX 0:cd0d79be0c1a 28 led1= !led1;
BlazeX 0:cd0d79be0c1a 29 }
BlazeX 0:cd0d79be0c1a 30 }
BlazeX 0:cd0d79be0c1a 31
BlazeX 0:cd0d79be0c1a 32 // This thread forwards from uart to pc
BlazeX 0:cd0d79be0c1a 33 void forwardUart(void const * argument)
BlazeX 0:cd0d79be0c1a 34 {
BlazeX 0:cd0d79be0c1a 35 // Sometimes You're the Nail
BlazeX 0:cd0d79be0c1a 36 while(1)
BlazeX 0:cd0d79be0c1a 37 {
BlazeX 0:cd0d79be0c1a 38 pc.putc(uart.getc());
BlazeX 0:cd0d79be0c1a 39 led2= !led2;
BlazeX 0:cd0d79be0c1a 40 }
BlazeX 0:cd0d79be0c1a 41 }
BlazeX 0:cd0d79be0c1a 42
BlazeX 0:cd0d79be0c1a 43 int main()
BlazeX 0:cd0d79be0c1a 44 {
BlazeX 0:cd0d79be0c1a 45 // setup serial ports
BlazeX 0:cd0d79be0c1a 46 pc.baud(9600);
BlazeX 0:cd0d79be0c1a 47 uart.baud(38400);
BlazeX 0:cd0d79be0c1a 48
BlazeX 0:cd0d79be0c1a 49 // Start the forwarding threads
BlazeX 0:cd0d79be0c1a 50 Thread forwardPcThread(&forwardPc);
BlazeX 0:cd0d79be0c1a 51 Thread forwardUartThread(&forwardUart);
BlazeX 0:cd0d79be0c1a 52
BlazeX 0:cd0d79be0c1a 53 // Do something else now
BlazeX 0:cd0d79be0c1a 54 while(1)
BlazeX 0:cd0d79be0c1a 55 {
BlazeX 0:cd0d79be0c1a 56 Thread::wait(20);
BlazeX 0:cd0d79be0c1a 57 led4= !led4;
BlazeX 0:cd0d79be0c1a 58 }
BlazeX 0:cd0d79be0c1a 59 }
BlazeX 0:cd0d79be0c1a 60
BlazeX 0:cd0d79be0c1a 61 #endif
BlazeX 1:1464146bd7fb 62