stm32_tdm_support.c File Reference

#include "stm32_tdm_support.h"

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Functions
int32_t	start_tdm_dma_to_cb_transfer (struct no_os_tdm_desc *tdm_desc, struct iio_device_data *iio_dev_data, uint32_t buffer_size, uint8_t bytes_per_sample, uint32_t n_samples_tdm_read)
	Read TDM DMA Data into the buffer. More...
void	update_dma_buffer_overflow (void)
	Update the TDM DMA buffer overflow flag. More...
int32_t	end_tdm_dma_to_cb_transfer (struct no_os_tdm_desc *tdm_desc, struct iio_device_data *iio_dev_data, uint32_t buffer_size, uint8_t bytes_per_sample)
	Update circular buffer indices and prepare for next async write via DMA. More...

Variables
volatile bool	dma_buffer_full
uint8_t *	dma_buff

Function Documentation

end_tdm_dma_to_cb_transfer()

int32_t end_tdm_dma_to_cb_transfer	(	struct no_os_tdm_desc *	tdm_desc,
		struct iio_device_data *	iio_dev_data,
		uint32_t	buffer_size,
		uint8_t	bytes_per_sample
	)

Update circular buffer indices and prepare for next async write via DMA.

Parameters

tdm_desc[in]	- TDM Descriptor
iio_dev_data[in]	- IIO Device data instance
buffer_size[in]	- Buffer Size
bytes_per_sample[in]	- Byte Per Sample

Returns

0 in case of Success, negative error code otherwise

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start_tdm_dma_to_cb_transfer()

int32_t start_tdm_dma_to_cb_transfer	(	struct no_os_tdm_desc *	tdm_desc,
		struct iio_device_data *	iio_dev_data,
		uint32_t	buffer_size,
		uint8_t	bytes_per_sample,
		uint32_t	n_samples_tdm_read
	)

Read TDM DMA Data into the buffer.

Parameters

tdm_desc[in]	- TDM descriptor
iio_dev_data[in]	- IIO device data instance
buffer_size[in]	- Buffer Size
bytes_per_sample[in]	- Byte Per Sample
n_samples_tdm_read[in]	- Number of samples to be read by TDM

Returns

0 in case of success, negative error code otherwise

update_dma_buffer_overflow()

void update_dma_buffer_overflow

(

void

)

Update the TDM DMA buffer overflow flag.

Returns

None

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Variable Documentation

dma_buff

uint8_t* dma_buff

dma_buffer_full

volatile bool dma_buffer_full