mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdbool.h>
|
|
#include "hal/misc.h"
|
|
#include "hal/assert.h"
|
|
#include "soc/gpio_sd_struct.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief Set Sigma-delta enable
|
|
*
|
|
* @param hw Peripheral SIGMADELTA hardware instance address.
|
|
* @param en Sigma-delta enable value
|
|
*/
|
|
static inline void sdm_ll_enable_clock(gpio_sd_dev_t *hw, bool en)
|
|
{
|
|
// The clk enable register does not exist on ESP32.
|
|
}
|
|
|
|
/**
|
|
* @brief Set Sigma-delta channel duty.
|
|
*
|
|
* @param hw Peripheral SIGMADELTA hardware instance address.
|
|
* @param channel Sigma-delta channel number
|
|
* @param density Sigma-delta quantized density of one channel, the value ranges from -128 to 127, recommended range is -90 ~ 90.
|
|
* The waveform is more like a random one in this range.
|
|
*/
|
|
__attribute__((always_inline))
|
|
static inline void sdm_ll_set_pulse_density(gpio_sd_dev_t *hw, int channel, int8_t density)
|
|
{
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->channel[channel], duty, (uint32_t)density);
|
|
}
|
|
|
|
/**
|
|
* @brief Set Sigma-delta channel's clock pre-scale value.
|
|
*
|
|
* @param hw Peripheral SIGMADELTA hardware instance address.
|
|
* @param channel Sigma-delta channel number
|
|
* @param prescale The divider of source clock, ranges from 1 to 256
|
|
*/
|
|
static inline void sdm_ll_set_prescale(gpio_sd_dev_t *hw, int channel, uint32_t prescale)
|
|
{
|
|
HAL_ASSERT(prescale && prescale <= 256);
|
|
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->channel[channel], prescale, prescale - 1);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|