sdio_slave_send_queue() function

Put a new sending transfer into the send queue. The driver takes ownership of the buffer until the buffer is returned by ``sdio_slave_send_get_finished`` after the transaction is finished.

Syntax

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Summary

Declaration

Definition

from sdio_slave.h:198

esp_err_t sdio_slave_send_queue(uint8_t* addr, size_t len, void* arg, TickType_t wait);

Implemented in sdio_slave.c:609

Arguments

Argument

Description

addr

Address for data to be sent. The buffer should be DMA capable and 32-bit aligned.

len

Length of the data, should not be longer than 4092 bytes (may support longer in the future).

arg

Argument to returned in ``sdio_slave_send_get_finished``. The argument can be used to indicate which transaction is done, or as a parameter for a callback. Set to NULL if not needed.

wait

Time to wait if the buffer is full.

Return value

- ESP_ERR_INVALID_ARG if the length is not greater than 0. - ESP_ERR_TIMEOUT if the queue is still full until timeout. - ESP_OK if success.

Examples

sdio_slave_send_queue() is referenced by 1 libraries and example projects:

References

from examples

sdio_slave_send_queue() function

Syntax

Arguments

Return value

Examples

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