Ross Squires / SoftSerial

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of SoftSerial by Erik -

SoftSerial.cpp@6:517082212c00, 2014-04-27 (annotated)

Committer:
Sissors
Date:
Sun Apr 27 08:33:17 2014 +0000
Revision:
6:517082212c00
Parent:
5:acfd0329f648
Child:
9:4e4617c4a441
Added custom ticker lib to allow for baudrate up to 57600

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 0:8edaa7abe724 1 #include "SoftSerial.h"
Sissors 0:8edaa7abe724 2
Sissors 5:acfd0329f648 3 SoftSerial::SoftSerial(PinName TX, PinName RX, const char* name) {
Sissors 0:8edaa7abe724 4 tx_en = rx_en = false;
Sissors 0:8edaa7abe724 5 if (TX != NC) {
Sissors 0:8edaa7abe724 6 tx = new DigitalOut(TX);
Sissors 0:8edaa7abe724 7 tx_en = true;
Sissors 0:8edaa7abe724 8 tx->write(1);
Sissors 0:8edaa7abe724 9 tx_bit = -1;
Sissors 6:517082212c00 10 txticker.attach(this, &SoftSerial::tx_handler);
Sissors 0:8edaa7abe724 11 }
Sissors 0:8edaa7abe724 12 if (RX != NC) {
Sissors 0:8edaa7abe724 13 rx = new InterruptIn(RX);
Sissors 0:8edaa7abe724 14 rx_en = true;
Sissors 1:f8b4b764ace7 15 out_valid = false;
Sissors 6:517082212c00 16 rxticker.attach(this, &SoftSerial::rx_handler);
Sissors 0:8edaa7abe724 17 rx->fall(this, &SoftSerial::rx_gpio_irq_handler);
Sissors 0:8edaa7abe724 18 }
Sissors 0:8edaa7abe724 19
Sissors 0:8edaa7abe724 20 baud(9600);
Sissors 0:8edaa7abe724 21 format();
Sissors 0:8edaa7abe724 22 }
Sissors 0:8edaa7abe724 23
Sissors 0:8edaa7abe724 24 void SoftSerial::baud(int baudrate) {
Sissors 0:8edaa7abe724 25 bit_period = 1000000 / baudrate;
Sissors 0:8edaa7abe724 26 }
Sissors 0:8edaa7abe724 27
Sissors 0:8edaa7abe724 28 void SoftSerial::format(int bits, Parity parity, int stop_bits) {
Sissors 0:8edaa7abe724 29 _bits = bits;
Sissors 0:8edaa7abe724 30 _parity = parity;
Sissors 0:8edaa7abe724 31 _stop_bits = stop_bits;
Sissors 2:9e01a38606b4 32 _total_bits = 1 + _bits + _stop_bits + (bool)_parity;
Sissors 0:8edaa7abe724 33 }