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:
3:6b76fcf27545
Parent:
2:7e8a450a9101
Child:
5:4d6a311fc8bf
--- a/BufferedSerial.h	Fri May 24 22:00:26 2013 +0000
+++ b/BufferedSerial.h	Wed Jun 12 20:40:15 2013 +0000
@@ -73,8 +73,8 @@
 class BufferedSerial : public Serial 
 {
 private:
-    Buffer <char>   _rxbuf;
-    Buffer <char>   _txbuf;
+    Buffer <char> _rxbuf;
+    Buffer <char> _txbuf;
  
     void rxIrq(void);
     void txIrq(void);