Sam Grove / BufferedSerial

Inherit from Serial and use software buffers for TX and RX. This allows the UART peripherals to operate in a IRQ driven mode. Overrides most (but not all) stdio functions as Serial did

Dependencies:   Buffer

Dependents:   buffered_serial_test BLE_Police_HRM evena_BLE_Police_HRM df-2014-workshop-rfid-case-generator-k64f ... more

Example

 #include "mbed.h"
 #include "BufferedSerial.h"

 BufferedSerial pc(USBTX, USBRX);

 int main()
 {
     pc.baud(115200);
   
     while(1)
     {
         Timer s;
       
         s.start();
         pc.printf("Hello World - buff\n");
         int buffered_time = s.read_us();
         wait(0.1f); // give time for the buffer to empty
       
         s.reset();
         printf("Hello World - poll\n");
         int polled_time = s.read_us();
         s.stop();
         wait(0.1f); // give time for the buffer to empty
       
         pc.printf("printf buffered took %d us\n", buffered_time);
         pc.printf("printf polled took %d us\n", polled_time);
         wait(0.5f);
     }
 }

Diff: BufferedSerial.h

Revision:
6:8287e83943f0
Parent:
5:4d6a311fc8bf
Child:
7:6fa214b41d73
diff -r 4d6a311fc8bf -r 8287e83943f0 BufferedSerial.h
--- a/BufferedSerial.h	Mon Mar 24 19:56:57 2014 +0000
+++ b/BufferedSerial.h	Tue Sep 09 20:20:38 2014 +0000
@@ -27,6 +27,8 @@
 #include "mbed.h"
 #include "Buffer.h"
 
+#define SERIAL_BASE  RawSerial
+
 /** A serial port (UART) for communication with other serial devices
  *
  * Can be used for Full Duplex communication, or Simplex by specifying
@@ -68,7 +70,7 @@
  *  @class BufferedSerial
  *  @brief Software buffers and interrupt driven tx and rx for Serial
  */  
-class BufferedSerial : public Serial 
+class BufferedSerial : public SERIAL_BASE 
 {
 private:
     Buffer <char> _rxbuf;