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:
12:a0d37088b405
Parent:
11:779304f9c5d2
Child:
13:c17c532bc4f8
diff -r 779304f9c5d2 -r a0d37088b405 BufferedSerial.h
--- a/BufferedSerial.h	Sun Jul 26 21:53:11 2015 +0000
+++ b/BufferedSerial.h	Mon Mar 07 21:10:27 2016 +0000
@@ -25,7 +25,7 @@
 #define BUFFEREDSERIAL_H
  
 #include "mbed.h"
-#include "Buffer.h"
+#include "MyBuffer.h"
 
 /** A serial port (UART) for communication with other serial devices
  *
@@ -71,8 +71,8 @@
 class BufferedSerial : public RawSerial 
 {
 private:
-    Buffer <char> _rxbuf;
-    Buffer <char> _txbuf;
+    MyBuffer <char> _rxbuf;
+    MyBuffer <char> _txbuf;
     uint32_t      _buf_size;
     uint32_t      _tx_multiple;