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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.

Diff: SerialDriver.h

Revision:
3:ea9719695b6a
Parent:
0:cd0d79be0c1a
Child:
8:903a4162a0d1
--- a/SerialDriver.h	Thu Jan 15 09:53:09 2015 +0000
+++ b/SerialDriver.h	Mon Jan 26 19:21:56 2015 +0000
@@ -46,6 +46,8 @@
     Semaphore semTxBufferFull;   // used by putc to wait
     Semaphore semRxBufferEmpty;  // used by getc to wait
     
+    // drop counters
+    volatile int numTxDrops, numRxDrops;
     
 public:
     /// @brief Prepares ring buffer and irq
@@ -170,4 +172,13 @@
     /// For compatibility with mbed Serial.
     /// @return true - RX buffer is readable, false - else
     inline bool readable()      {   return !isRxBufferEmpty();   }
+    
+    
+    /// @brief Returns number of dropped bytes that did not fit into TX buffer
+    /// @return number of dropped tx bytes
+    inline int getNumTxDrops()  {   return numTxDrops;  }
+    
+    /// @brief Returns number of dropped bytes that did not fit into RX buffer
+    /// @return number of dropped rx bytes
+    inline int getNumRxDrops()  {   return numRxDrops;  }
 };