8f9b2513ff
* SYSTEM: tickless mode with deep sleep. * Move FreeRTOS ticks to lptim2 * API: move all sumbodules init routines to one place. Timebase: working lptim2 at tick source. * API Timebase: lp-timer routines, timer access safe zones prediction and synchronization. FreeRTOS: adjust configuration for tickless mode. * NFC: support for tickless mode. * API Timebase: improve tick error handling in IRQ. Apploader: use insomnia mode to run applications. * BLE: prevent sleep while core2 starting * HAL: nap while in insomnia mode * init records work * try to implement record delete * tests and flapp * flapp subsystem * new core functions to get app stat, simplify core code * fix thread termination * add strdup to core * fix tests * Refactoring: remove all unusued parts, update API usage, aggreagate API sources and headers, new record storage * Refactoring: update furi record api usage, cleanup code * Fix broken merge for freertos apps * Core, Target: fix compilation warnings * Drop firmware target local * HAL Timebase, Power, Clock: semaphore guarded access to clock and power modes, better sleep mode. * SD-Filesystem: wait for all deps to arrive before adding widget. Core, BLE: disable debug dump to serial. * delete old app example-ipc * delete old app fatfs list * fix strobe app, add input header * delete old display driver * comment old app qr-code * fix sd-card test, add forced widget update * remove unused new core test * increase heap to 128k * comment and assert old core tests * fix syntax Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
130 lines
2.6 KiB
C++
130 lines
2.6 KiB
C++
#pragma once
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#include <furi.h>
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#include "one_wire_timings.h"
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class OneWireGpio {
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private:
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const GpioPin* gpio;
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public:
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OneWireGpio(const GpioPin* one_wire_gpio);
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~OneWireGpio();
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bool reset(void);
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bool read_bit(void);
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uint8_t read(void);
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void read_bytes(uint8_t* buf, uint16_t count);
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void write_bit(bool value);
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void write(uint8_t value);
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void start(void);
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void stop(void);
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};
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OneWireGpio::OneWireGpio(const GpioPin* one_wire_gpio) {
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gpio = one_wire_gpio;
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}
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OneWireGpio::~OneWireGpio() {
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stop();
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}
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void OneWireGpio::start(void) {
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gpio_init(gpio, GpioModeOutputOpenDrain);
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}
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void OneWireGpio::stop(void) {
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gpio_init(gpio, GpioModeAnalog);
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}
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bool OneWireGpio::reset(void) {
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uint8_t r;
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uint8_t retries = 125;
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// wait until the gpio is high
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gpio_write(gpio, true);
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do {
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if(--retries == 0) return 0;
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delay_us(2);
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} while(!gpio_read(gpio));
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// pre delay
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delay_us(OneWireTiming::RESET_DELAY_PRE);
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// drive low
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gpio_write(gpio, false);
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delay_us(OneWireTiming::RESET_DRIVE);
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// release
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gpio_write(gpio, true);
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delay_us(OneWireTiming::RESET_RELEASE);
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// read and post delay
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r = !gpio_read(gpio);
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delay_us(OneWireTiming::RESET_DELAY_POST);
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return r;
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}
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bool OneWireGpio::read_bit(void) {
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bool result;
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// drive low
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gpio_write(gpio, false);
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delay_us(OneWireTiming::READ_DRIVE);
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// release
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gpio_write(gpio, true);
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delay_us(OneWireTiming::READ_RELEASE);
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// read and post delay
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result = gpio_read(gpio);
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delay_us(OneWireTiming::READ_DELAY_POST);
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return result;
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}
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void OneWireGpio::write_bit(bool value) {
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if(value) {
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// drive low
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gpio_write(gpio, false);
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delay_us(OneWireTiming::WRITE_1_DRIVE);
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// release
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gpio_write(gpio, true);
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delay_us(OneWireTiming::WRITE_1_RELEASE);
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} else {
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// drive low
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gpio_write(gpio, false);
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delay_us(OneWireTiming::WRITE_0_DRIVE);
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// release
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gpio_write(gpio, true);
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delay_us(OneWireTiming::WRITE_0_RELEASE);
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}
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}
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uint8_t OneWireGpio::read(void) {
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uint8_t result = 0;
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for(uint8_t bitMask = 0x01; bitMask; bitMask <<= 1) {
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if(read_bit()) {
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result |= bitMask;
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}
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}
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return result;
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}
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void OneWireGpio::read_bytes(uint8_t* buffer, uint16_t count) {
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for(uint16_t i = 0; i < count; i++) {
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buffer[i] = read();
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}
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}
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void OneWireGpio::write(uint8_t value) {
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uint8_t bitMask;
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for(bitMask = 0x01; bitMask; bitMask <<= 1) {
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write_bit((bitMask & value) ? 1 : 0);
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}
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}
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