kopia lustrzana https://github.com/OpenRTX/OpenRTX
70 wiersze
2.5 KiB
C
70 wiersze
2.5 KiB
C
/***************************************************************************
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* Copyright (C) 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef STM32_PWM_H
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#define STM32_PWM_H
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#include <stdbool.h>
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#include <stdint.h>
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#include <stm32f4xx.h>
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#include <interfaces/audio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Driver STM32 PWM used as audio output stream device.
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* Input data format is signed 16-bit, internally converted to unsigned 8-bit
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* values for compatibility with the hardware.
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*
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* The driver uses the following peripherals: DMA1_Stream2, TIM7
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*/
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/**
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* Data structure holding the configuration for a given DAC channel.
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*/
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struct PwmChannelCfg
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{
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volatile uint32_t *pwmReg; ///< Address of PWM duty cycle register.
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void (*startCbk)(void); ///< Callback function for additional setup operations.
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void (*stopCbk)(void); ///< Callback function for additional end operations.
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};
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extern const struct audioDriver stm32_pwm_audio_driver;
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/**
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* Initialize the driver and the peripherals.
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*/
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void stm32pwm_init();
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/**
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* Shutdown the driver and the peripherals.
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*/
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void stm32pwm_terminate();
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#ifdef __cplusplus
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}
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#endif
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#endif /* STM32_PWM_H */
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