bdba15b366
* iButton: getting started on the worker concept * Hal delay: added global instructions_per_us variable * iButton: one wire slave * iButton: ibutton key setter * iButton: one wire host, use ibutton_hal * iButton\RFID: common pulse decoder concept * iButton: cyfral decoder * iButton: worker thread concept * iButton: metakom decoder * iButton: write key through worker * iButton: worker mode holder * iButton: worker improvements * iButton: Cyfral encoder * iButton: Metakom encoder * lib: pulse protocol helpers * iButton: Metakom decoder * iButton: Cyfral decoder * iButton worker: separate modes * iButton: libs documentation * HAL: iButton gpio modes * iButton worker: rename modes file * iButton worker, hal: move to LL * iButton CLI: worker for reading and emulation commands * iButton HAL: correct init and emulation sequence * iButton cli: moved to plain C * iButton: move to worker, small step to plain C * Libs, one wire: move to plain C * Libs: added forgotten files to compilation * iButton writer: get rid of manual disable/enable irq
139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
#include <furi_hal_ibutton.h>
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#include <furi_hal_interrupt.h>
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#include <furi_hal_resources.h>
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#include <stm32wbxx_ll_tim.h>
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#include <stm32wbxx_ll_exti.h>
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#include <furi.h>
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#define FURI_HAL_IBUTTON_TIMER TIM1
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#define FURI_HAL_IBUTTON_TIMER_IRQ TIM1_UP_TIM16_IRQn
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typedef enum {
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FuriHalIbuttonStateIdle,
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FuriHalIbuttonStateRunning,
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} FuriHalIbuttonState;
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typedef struct {
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FuriHalIbuttonState state;
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FuriHalIbuttonEmulateCallback callback;
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void* context;
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} FuriHalIbutton;
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FuriHalIbutton* furi_hal_ibutton = NULL;
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static void furi_hal_ibutton_emulate_isr() {
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if(LL_TIM_IsActiveFlag_UPDATE(FURI_HAL_IBUTTON_TIMER)) {
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LL_TIM_ClearFlag_UPDATE(FURI_HAL_IBUTTON_TIMER);
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furi_hal_ibutton->callback(furi_hal_ibutton->context);
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}
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}
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void furi_hal_ibutton_init() {
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furi_hal_ibutton = malloc(sizeof(FuriHalIbutton));
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furi_hal_ibutton->state = FuriHalIbuttonStateIdle;
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}
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void furi_hal_ibutton_emulate_start(
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uint32_t period,
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FuriHalIbuttonEmulateCallback callback,
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void* context) {
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furi_assert(furi_hal_ibutton);
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furi_assert(furi_hal_ibutton->state == FuriHalIbuttonStateIdle);
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furi_hal_ibutton->state = FuriHalIbuttonStateRunning;
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furi_hal_ibutton->callback = callback;
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furi_hal_ibutton->context = context;
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FURI_CRITICAL_ENTER();
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LL_TIM_DeInit(FURI_HAL_IBUTTON_TIMER);
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FURI_CRITICAL_EXIT();
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furi_hal_interrupt_set_timer_isr(FURI_HAL_IBUTTON_TIMER, furi_hal_ibutton_emulate_isr);
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NVIC_SetPriority(
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FURI_HAL_IBUTTON_TIMER_IRQ, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 5, 0));
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NVIC_EnableIRQ(FURI_HAL_IBUTTON_TIMER_IRQ);
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LL_TIM_SetPrescaler(FURI_HAL_IBUTTON_TIMER, 0);
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LL_TIM_SetCounterMode(FURI_HAL_IBUTTON_TIMER, LL_TIM_COUNTERMODE_UP);
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LL_TIM_SetAutoReload(FURI_HAL_IBUTTON_TIMER, period);
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LL_TIM_DisableARRPreload(FURI_HAL_IBUTTON_TIMER);
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LL_TIM_SetRepetitionCounter(FURI_HAL_IBUTTON_TIMER, 0);
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LL_TIM_SetClockDivision(FURI_HAL_IBUTTON_TIMER, LL_TIM_CLOCKDIVISION_DIV1);
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LL_TIM_SetClockSource(FURI_HAL_IBUTTON_TIMER, LL_TIM_CLOCKSOURCE_INTERNAL);
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LL_TIM_GenerateEvent_UPDATE(FURI_HAL_IBUTTON_TIMER);
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LL_TIM_EnableIT_UPDATE(FURI_HAL_IBUTTON_TIMER);
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LL_TIM_EnableCounter(FURI_HAL_IBUTTON_TIMER);
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}
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void furi_hal_ibutton_emulate_set_next(uint32_t period) {
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LL_TIM_SetAutoReload(FURI_HAL_IBUTTON_TIMER, period);
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}
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void furi_hal_ibutton_emulate_stop() {
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furi_assert(furi_hal_ibutton);
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if(furi_hal_ibutton->state == FuriHalIbuttonStateRunning) {
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furi_hal_ibutton->state = FuriHalIbuttonStateIdle;
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LL_TIM_DisableCounter(FURI_HAL_IBUTTON_TIMER);
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FURI_CRITICAL_ENTER();
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LL_TIM_DeInit(FURI_HAL_IBUTTON_TIMER);
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FURI_CRITICAL_EXIT();
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furi_hal_interrupt_set_timer_isr(FURI_HAL_IBUTTON_TIMER, NULL);
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furi_hal_ibutton->callback = NULL;
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furi_hal_ibutton->context = NULL;
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}
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}
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void furi_hal_ibutton_start_drive() {
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furi_hal_ibutton_pin_high();
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hal_gpio_init(&ibutton_gpio, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
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}
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void furi_hal_ibutton_start_drive_in_isr() {
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hal_gpio_init(&ibutton_gpio, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
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LL_EXTI_ClearFlag_0_31(ibutton_gpio.pin);
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}
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void furi_hal_ibutton_start_interrupt() {
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furi_hal_ibutton_pin_high();
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hal_gpio_init(&ibutton_gpio, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
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}
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void furi_hal_ibutton_start_interrupt_in_isr() {
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hal_gpio_init(&ibutton_gpio, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
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LL_EXTI_ClearFlag_0_31(ibutton_gpio.pin);
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}
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void furi_hal_ibutton_stop() {
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furi_hal_ibutton_pin_high();
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hal_gpio_init(&ibutton_gpio, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
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}
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void furi_hal_ibutton_add_interrupt(GpioExtiCallback cb, void* context) {
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hal_gpio_add_int_callback(&ibutton_gpio, cb, context);
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}
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void furi_hal_ibutton_remove_interrupt() {
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hal_gpio_remove_int_callback(&ibutton_gpio);
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}
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void furi_hal_ibutton_pin_low() {
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hal_gpio_write(&ibutton_gpio, false);
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}
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void furi_hal_ibutton_pin_high() {
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hal_gpio_write(&ibutton_gpio, true);
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}
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bool furi_hal_ibutton_pin_get_level() {
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return hal_gpio_read(&ibutton_gpio);
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}
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