kopia lustrzana https://github.com/jgromes/RadioLib
143 wiersze
3.3 KiB
C++
143 wiersze
3.3 KiB
C++
#ifndef PICO_HAL_H
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#define PICO_HAL_H
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// include RadioLib
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#include <RadioLib.h>
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// include the necessary Pico libraries
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#include <pico/stdlib.h>
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#include "hardware/spi.h"
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#include "hardware/timer.h"
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// create a new Raspberry Pi Pico hardware abstraction
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// layer using the Pico SDK
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// the HAL must inherit from the base RadioLibHal class
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// and implement all of its virtual methods
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class PicoHal : public RadioLibHal {
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public:
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PicoHal(spi_inst_t *spiChannel, uint32_t misoPin, uint32_t mosiPin, uint32_t sckPin, uint32_t spiSpeed = 500 * 1000)
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: RadioLibHal(GPIO_IN, GPIO_OUT, 0, 1, GPIO_IRQ_EDGE_RISE, GPIO_IRQ_EDGE_FALL),
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_spiChannel(spiChannel),
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_spiSpeed(spiSpeed),
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_misoPin(misoPin),
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_mosiPin(mosiPin),
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_sckPin(sckPin) {
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}
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void init() override {
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stdio_init_all();
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spiBegin();
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}
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void term() override {
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spiEnd();
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}
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// GPIO-related methods (pinMode, digitalWrite etc.) should check
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// RADIOLIB_NC as an alias for non-connected pins
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void pinMode(uint32_t pin, uint32_t mode) override {
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if (pin == RADIOLIB_NC) {
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return;
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}
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gpio_init(pin);
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gpio_set_dir(pin, mode);
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}
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void digitalWrite(uint32_t pin, uint32_t value) override {
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if (pin == RADIOLIB_NC) {
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return;
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}
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gpio_put(pin, (bool)value);
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}
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uint32_t digitalRead(uint32_t pin) override {
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if (pin == RADIOLIB_NC) {
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return 0;
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}
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return gpio_get(pin);
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}
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void attachInterrupt(uint32_t interruptNum, void (*interruptCb)(void), uint32_t mode) override {
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if (interruptNum == RADIOLIB_NC) {
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return;
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}
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gpio_set_irq_enabled_with_callback(interruptNum, GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL, true, (gpio_irq_callback_t)interruptCb);
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}
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void detachInterrupt(uint32_t interruptNum) override {
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if (interruptNum == RADIOLIB_NC) {
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return;
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}
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gpio_set_irq_enabled_with_callback(interruptNum, GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL, false, NULL);
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}
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void delay(unsigned long ms) override {
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sleep_ms(ms);
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}
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void delayMicroseconds(unsigned long us) override {
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sleep_us(us);
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}
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unsigned long millis() override {
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return to_ms_since_boot(get_absolute_time());
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}
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unsigned long micros() override {
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return to_us_since_boot(get_absolute_time());
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}
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long pulseIn(uint32_t pin, uint32_t state, unsigned long timeout) override {
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if (pin == RADIOLIB_NC) {
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return 0;
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}
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this->pinMode(pin, GPIO_IN);
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uint32_t start = this->micros();
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uint32_t curtick = this->micros();
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while (this->digitalRead(pin) == state) {
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if ((this->micros() - curtick) > timeout) {
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return 0;
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}
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}
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return (this->micros() - start);
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}
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void spiBegin() {
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spi_init(_spiChannel, _spiSpeed);
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spi_set_format(_spiChannel, 8, SPI_CPOL_0, SPI_CPHA_0, SPI_MSB_FIRST);
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gpio_set_function(_sckPin, GPIO_FUNC_SPI);
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gpio_set_function(_mosiPin, GPIO_FUNC_SPI);
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gpio_set_function(_misoPin, GPIO_FUNC_SPI);
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}
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void spiBeginTransaction() {}
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void spiTransfer(uint8_t *out, size_t len, uint8_t *in) {
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spi_write_read_blocking(_spiChannel, out, in, len);
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}
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void spiEndTransaction() {}
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void spiEnd() {
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spi_deinit(_spiChannel);
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}
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private:
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// the HAL can contain any additional private members
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spi_inst_t *_spiChannel;
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uint32_t _spiSpeed;
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uint32_t _misoPin;
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uint32_t _mosiPin;
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uint32_t _sckPin;
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};
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#endif |