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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

Committer:
BlazeX
Date:
2015-10-29
Revision:
8:903a4162a0d1
Parent:
1:1464146bd7fb

File content as of revision 8:903a4162a0d1:

/// @file Example_Bridge.cpp
/// @brief Forwarding every byte from USB to uart and vice versa
/// 
/// - Uses SerialDriver with USBTX and USBRX.
/// - Uses SerialDriver with p13 and p14.
/// 
/// - LED1 indicates forwarding pc to uart works
/// - LED2 indicates forwarding uart to pc works
/// - LED4 indicates a parallel thread running
/// 
/// - connect p13 with p14 to get a hardware null modem ;)

#if 0

#include "SerialDriver.h"

SerialDriver pc(USBTX, USBRX);
SerialDriver uart(p13, p14);
DigitalOut led1(LED1), led2(LED2), led4(LED4);

// This thread forwards from pc to uart
void forwardPc(void const * argument)
{
    // Sometimes You're the Hammer, 
    while(1)
    {    
        uart.putc(pc.getc());
        led1= !led1;    
    }
}

// This thread forwards from uart to pc
void forwardUart(void const * argument)
{
    // Sometimes You're the Nail
    while(1)
    {      
        pc.putc(uart.getc());
        led2= !led2;    
    }
}

int main()
{
    // setup serial ports
    pc.baud(9600);
    uart.baud(38400);
    
    // Start the forwarding threads
    Thread forwardPcThread(&forwardPc);
    Thread forwardUartThread(&forwardUart);
    
    // Do something else now  
    while(1)
    {
        Thread::wait(20);
        led4= !led4;
    }
}

#endif