Erik - / BufferedSoftSerial

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

Dependencies:   Buffer SoftSerial

Dependents:   2014_Ensoul_Capstone F103RB_tcp_rtu_modbus_copy_v1_0 SDP_Testing Nucleo_SFM ... more

Fork of BufferedSerial by Sam Grove

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BufferedSerial Class Reference

BufferedSerial Class Reference

A serial port (UART) for communication with other serial devices. More...

#include <BufferedSoftSerial.h>

Detailed Description

A serial port (UART) for communication with other serial devices.

Can be used for Full Duplex communication, or Simplex by specifying one pin as NC (Not Connected)

This uses software serial emulation, regular serial pins are alot better, however if you don't have spare ones, you can use this. It is advicable to put the serial connection with highest speed to hardware serial.

If you lack RAM memory you can also use SoftSerial without this buffer around it. In that case it is fully blocking.

Example: 

 #include "mbed.h"
 #include "BufferedSoftSerial.h"
 
 SoftSerial block(USBTX, USBRX);
 BufferedSoftSerial buf(USBTX, USBRX);
 
 int main()
 {
     while(1) {
         Timer s;
 
         s.start();
         buf.printf("Hello World - buffered\r\n");
         int buffered_time = s.read_us();
         wait(0.1f); // give time for the buffer to empty
 
         s.reset();
         block.printf("Hello World - blocking\r\n");
         int polled_time = s.read_us();
         s.stop();
         wait(0.1f); // give time for the buffer to empty
 
         buf.printf("printf buffered took %d us\r\n", buffered_time);
         buf.printf("printf blocking took %d us\r\n", polled_time);
         wait(5);
     }
 }

Software buffers and interrupt driven tx and rx for SoftSerial

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