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@9:4e4617c4a441, 2014-07-05 (annotated)

Committer:
Sissors
Date:
Sat Jul 05 08:07:49 2014 +0000
Revision:
9:4e4617c4a441
Parent:
6:517082212c00
Child:
11:a0029614de72
Added destructor

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 9:4e4617c4a441 24 SoftSerial::~SoftSerial() {
Sissors 9:4e4617c4a441 25 if (tx_en)
Sissors 9:4e4617c4a441 26 delete(tx);
Sissors 9:4e4617c4a441 27 if (rx_en)
Sissors 9:4e4617c4a441 28 delete(rx);
Sissors 9:4e4617c4a441 29 }
Sissors 9:4e4617c4a441 30
Sissors 0:8edaa7abe724 31 void SoftSerial::baud(int baudrate) {
Sissors 0:8edaa7abe724 32 bit_period = 1000000 / baudrate;
Sissors 0:8edaa7abe724 33 }
Sissors 0:8edaa7abe724 34
Sissors 0:8edaa7abe724 35 void SoftSerial::format(int bits, Parity parity, int stop_bits) {
Sissors 0:8edaa7abe724 36 _bits = bits;
Sissors 0:8edaa7abe724 37 _parity = parity;
Sissors 0:8edaa7abe724 38 _stop_bits = stop_bits;
Sissors 2:9e01a38606b4 39 _total_bits = 1 + _bits + _stop_bits + (bool)_parity;
Sissors 0:8edaa7abe724 40 }