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);
     }
 }

Files at this revision

API Documentation at this revision

Revision 12:a0d37088b405, committed 2016-03-07

Comitter:
sam_grove
Date:
Mon Mar 07 21:10:27 2016 +0000
Parent:
11:779304f9c5d2
Child:
13:c17c532bc4f8
Commit message:
Update Buffer to MyBuffer

Changed in this revision

Buffer.lib Show annotated file Show diff for this revision Revisions of this file
BufferedSerial.h Show annotated file Show diff for this revision Revisions of this file 
--- a/Buffer.lib	Sun Jul 26 21:53:11 2015 +0000
+++ b/Buffer.lib	Mon Mar 07 21:10:27 2016 +0000
@@ -1,1 +1,1 @@
-https://mbed.org/users/sam_grove/code/Buffer/#7b754354b99c
+https://mbed.org/users/sam_grove/code/Buffer/#89564915f2a7

--- 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;