stm32_tdm.c File Reference

Implementation of TDM driver using STM32's SAI peripheral. More...

#include <stdlib.h>
#include <errno.h>
#include "no_os_gpio.h"
#include "stm32_gpio.h"
#include "no_os_tdm.h"
#include "stm32_tdm.h"
#include "no_os_error.h"
#include "no_os_alloc.h"
#include "no_os_irq.h"
#include "stm32_irq.h"
#include "no_os_lf256fifo.h"

Include dependency graph for stm32_tdm.c:

Functions
int32_t	stm32_tdm_init (struct no_os_tdm_desc **desc, const struct no_os_tdm_init_param *param)
	Initialize the TDM communication peripheral.
int32_t	stm32_tdm_remove (struct no_os_tdm_desc *desc)
	Free the resources allocated by stm32_tdm_init().
int32_t	stm32_tdm_read (struct no_os_tdm_desc *desc, void *data, uint16_t nb_samples)
	Read data using SAI TDM mode.
int32_t	stm32_stop_tdm_transfer (struct no_os_tdm_desc *desc)
	Stop SAI DMA transfer.
int32_t	stm32_pause_tdm_transfer (struct no_os_tdm_desc *desc)
	Pause SAI DMA transfer.
int32_t	stm32_resume_tdm_transfer (struct no_os_tdm_desc *desc)
	Resume SAI DMA transfer.

Variables
const struct no_os_tdm_platform_ops	stm32_tdm_platform_ops
	stm32 platform specific TDM platform ops structure

Detailed Description

Implementation of TDM driver using STM32's SAI peripheral.

Author

Darius Berghe (dariu.nosp@m.s.be.nosp@m.rghe@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2020(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

stm32_pause_tdm_transfer()

int32_t stm32_pause_tdm_transfer

(

struct no_os_tdm_desc *

desc

)

Pause SAI DMA transfer.

Parameters

desc	- The TDM descriptor.

Returns

0 in case of success, negative error code otherwise.

stm32_resume_tdm_transfer()

int32_t stm32_resume_tdm_transfer

(

struct no_os_tdm_desc *

desc

)

Resume SAI DMA transfer.

Parameters

desc	- The TDM descriptor.

Returns

0 in case of success, negative error code otherwise.

stm32_stop_tdm_transfer()

int32_t stm32_stop_tdm_transfer

(

struct no_os_tdm_desc *

desc

)

Stop SAI DMA transfer.

Parameters

desc	- The TDM descriptor.

Returns

0 in case of success, negative error code otherwise.

stm32_tdm_init()

int32_t stm32_tdm_init	(	struct no_os_tdm_desc **	desc,
		const struct no_os_tdm_init_param *	param )

Initialize the TDM communication peripheral.

Parameters

desc	- The TDM descriptor.
param	- The structure that contains the TDM parameters.

Returns

0 in case of success, negative error code otherwise.

stm32_tdm_read()

int32_t stm32_tdm_read	(	struct no_os_tdm_desc *	desc,
		void *	data,
		uint16_t	nb_samples )

Read data using SAI TDM mode.

Parameters

desc	- The TDM descriptor.
data	- The buffer to fill with the received data.
nb_samples	- Number of samples to read.

Returns

0 in case of success, negative error code otherwise.

stm32_tdm_remove()

int32_t stm32_tdm_remove

(

struct no_os_tdm_desc *

desc

)

Free the resources allocated by stm32_tdm_init().

Parameters

desc	- The TDM descriptor.

Returns

0 in case of success, negative error code otherwise.

Variable Documentation

stm32_tdm_platform_ops

const struct no_os_tdm_platform_ops stm32_tdm_platform_ops

Initial value:

= {
    .tdm_ops_init = &stm32_tdm_init,
    .tdm_ops_read = &stm32_tdm_read,
    .tdm_ops_stop = &stm32_stop_tdm_transfer,
    .tdm_ops_pause = &stm32_pause_tdm_transfer,
    .tdm_ops_resume = &stm32_resume_tdm_transfer,
    .tdm_ops_remove = &stm32_tdm_remove
}

stm32 platform specific TDM platform ops structure

stm32 specific TDM platform ops structure