Erik - / SoftSerial

Software serial, for when you are out of serial pins

Dependents:   BufferedSoftSerial neurGAI_Seeed_BLUETOOTH LPC-SD-35 ESP-WROOM-02_test ... more

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 }