89a6c09a7a
* Documentation: add Doxyfile, prepare sources for doxygen. * Update ReadMe and remove obsolete CLA * Add contribution guide * Contributing: update text * Correct spelling
141 lines
4.7 KiB
C
141 lines
4.7 KiB
C
/**
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* @file furi-hal-irda.h
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* IRDA HAL API
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define IRDA_MAX_FREQUENCY 56000
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#define IRDA_MIN_FREQUENCY 10000
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typedef enum {
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FuriHalIrdaTxGetDataStateOk, /**< New data obtained */
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FuriHalIrdaTxGetDataStateDone, /**< New data obtained, and this is end of package */
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FuriHalIrdaTxGetDataStateLastDone, /**< New data obtained, and this is end of package and no more data available */
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} FuriHalIrdaTxGetDataState;
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/** Callback type for providing data to IRDA DMA TX system. It is called every tim */
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typedef FuriHalIrdaTxGetDataState (*FuriHalIrdaTxGetDataISRCallback) (void* context, uint32_t* duration, bool* level);
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/** Callback type called every time signal is sent by DMA to Timer.
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*
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* Actually, it means there are 2 timings left to send for this signal, which is
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* almost end. Don't use this callback to stop transmission, as far as there are
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* next signal is charged for transmission by DMA.
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*/
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typedef void (*FuriHalIrdaTxSignalSentISRCallback) (void* context);
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/** Signature of callback function for receiving continuous IRDA rx signal.
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*
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* @param ctx[in] context to pass to callback
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* @param level[in] level of input IRDA rx signal
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* @param duration[in] duration of continuous rx signal level in us
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*/
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typedef void (*FuriHalIrdaRxCaptureCallback)(void* ctx, bool level, uint32_t duration);
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/** Signature of callback function for reaching silence timeout on IRDA port.
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*
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* @param ctx[in] context to pass to callback
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*/
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typedef void (*FuriHalIrdaRxTimeoutCallback)(void* ctx);
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/** Initialize IRDA RX timer to receive interrupts.
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*
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* It provides interrupts for every RX-signal edge changing with its duration.
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*/
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void furi_hal_irda_async_rx_start(void);
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/** Deinitialize IRDA RX interrupt.
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*/
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void furi_hal_irda_async_rx_stop(void);
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/** Setup hal for receiving silence timeout.
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*
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* Should be used with 'furi_hal_irda_timeout_irq_set_callback()'.
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*
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* @param[in] timeout_us time to wait for silence on IRDA port before
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* generating IRQ.
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*/
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void furi_hal_irda_async_rx_set_timeout(uint32_t timeout_us);
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/** Setup callback for previously initialized IRDA RX interrupt.
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*
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* @param[in] callback callback to call when RX signal edge changing occurs
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* @param[in] ctx context for callback
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*/
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void furi_hal_irda_async_rx_set_capture_isr_callback(FuriHalIrdaRxCaptureCallback callback, void *ctx);
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/** Setup callback for reaching silence timeout on IRDA port.
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*
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* Should setup hal with 'furi_hal_irda_setup_rx_timeout_irq()' first.
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*
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* @param[in] callback callback for silence timeout
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* @param[in] ctx context to pass to callback
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*/
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void furi_hal_irda_async_rx_set_timeout_isr_callback(FuriHalIrdaRxTimeoutCallback callback, void *ctx);
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/** Check if IRDA is in use now.
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*
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* @return true if IRDA is busy, false otherwise.
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*/
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bool furi_hal_irda_is_busy(void);
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/** Set callback providing new data.
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*
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* This function has to be called before furi_hal_irda_async_tx_start().
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*
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* @param[in] callback function to provide new data
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* @param[in] context context for callback
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*/
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void furi_hal_irda_async_tx_set_data_isr_callback(FuriHalIrdaTxGetDataISRCallback callback, void* context);
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/** Start IR asynchronous transmission.
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*
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* It can be stopped by 2 reasons:
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* 1. implicit call for furi_hal_irda_async_tx_stop()
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* 2. callback can provide FuriHalIrdaTxGetDataStateLastDone response which
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* means no more data available for transmission.
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*
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* Any func (furi_hal_irda_async_tx_stop() or
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* furi_hal_irda_async_tx_wait_termination()) has to be called to wait end of
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* transmission and free resources.
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*
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* @param[in] freq frequency for PWM
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* @param[in] duty_cycle duty cycle for PWM
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*/
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void furi_hal_irda_async_tx_start(uint32_t freq, float duty_cycle);
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/** Stop IR asynchronous transmission and free resources.
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*
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* Transmission will stop as soon as transmission reaches end of package
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* (FuriHalIrdaTxGetDataStateDone or FuriHalIrdaTxGetDataStateLastDone).
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*/
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void furi_hal_irda_async_tx_stop(void);
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/** Wait for end of IR asynchronous transmission and free resources.
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*
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* Transmission will stop as soon as transmission reaches end of transmission
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* (FuriHalIrdaTxGetDataStateLastDone).
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*/
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void furi_hal_irda_async_tx_wait_termination(void);
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/** Set callback for end of signal transmission
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*
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* @param[in] callback function to call when signal is sent
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* @param[in] context context for callback
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*/
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void furi_hal_irda_async_tx_set_signal_sent_isr_callback(FuriHalIrdaTxSignalSentISRCallback callback, void* context);
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#ifdef __cplusplus
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}
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#endif
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