mirror of https://github.com/arendst/Tasmota.git
84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
/*
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* TMRh20 2015
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*
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*/
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#include "gpio.h"
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GPIO::GPIO() {
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// Prophet: basic members initialization
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gpio_ce_pin = -1;
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//gpio_cs_pin = -1;
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gpio_0 = NULL;
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//gpio_1 = NULL;
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}
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GPIO::~GPIO() {
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// Prophet: this should free memory, and unexport pins when RF24 and/or GPIO gets deleted or goes out of scope
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this->close(gpio_ce_pin);
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//this->close(gpio_cs_pin);
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}
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void GPIO::begin(uint8_t ce_pin, uint8_t cs_pin)
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{
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gpio_ce_pin = ce_pin;
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//gpio_cs_pin = cs_pin;
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// Prophet: owner can be set here, because we use our pins exclusively, and are making mraa:Gpio context persistent
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// so pins will be unexported only if close is called, or on destruction
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gpio_0 = new mraa::Gpio(ce_pin/*,0*/);
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//gpio_1 = new mraa::Gpio(cs_pin/*,0*/);
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}
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void GPIO::open(int port, int DDR)
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{
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if(port == gpio_ce_pin){
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gpio_0 = new mraa::Gpio(port,0);
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gpio_0->useMmap(true);
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gpio_0->dir( (mraa::Dir)DDR);
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}/*else
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if(port == gpio_cs_pin){
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gpio_1 = new mraa::Gpio(port,0);
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gpio_1->useMmap(true);
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gpio_1->dir( (mraa::Dir)DDR);
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}*/
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}
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void GPIO::close(int port)
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{
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// Prophet: using same theme of working with port numbers as with GPIO::open,
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// checking for mraa::Gpio context existence to be sure, that GPIO::begin was called
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if(port == gpio_ce_pin)
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{
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if (gpio_0 != NULL) {
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delete gpio_0;
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}
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}
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/*if(port == gpio_cs_pin) {
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if (gpio_1 != NULL) {
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delete gpio_1;
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}
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}*/
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}
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int GPIO::read(int port)
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{
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if(port == gpio_ce_pin){
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return gpio_0->read();
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}/*else
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if(port == gpio_cs_pin){
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return gpio_1->read();
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}*/
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return -1;
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}
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void GPIO::write(int port, int value){
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if(port == gpio_ce_pin){
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gpio_0->write( value);
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}/*else
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if(port == gpio_cs_pin){
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gpio_1->write( value);
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}*/
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}
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