BlazeX . / SerialDriver Featured

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

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.

Diff: Examples/Example_Bridge.cpp

Revision:
0:cd0d79be0c1a
Child:
1:1464146bd7fb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Examples/Example_Bridge.cpp	Wed Jan 14 16:30:14 2015 +0000
@@ -0,0 +1,62 @@
+/// @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 "mbed.h"
+#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