sdio_slave_recv() function

Get received data if exist. The driver returns the ownership of the buffer to the app.

Syntax

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Summary

Declaration

Definition

from sdio_slave.h:170

esp_err_t sdio_slave_recv(sdio_slave_buf_handle_t* handle_ret, uint8_t **out_addr, size_t *out_len, TickType_t wait);

Implemented in sdio_slave.c:777

Arguments

Argument

Description

handle_ret

Handle to the buffer holding received data. Use this handle in ``sdio_slave_recv_load_buf`` to receive in the same buffer again.

out_addr

Output of the start address, set to NULL if not needed.

out_len

Actual length of the data in the buffer, set to NULL if not needed.

wait

Time to wait before data received.

Return value

- ESP_ERR_INVALID_ARG if handle_ret is NULL - ESP_ERR_TIMEOUT if timeout before receiving new data - ESP_OK if success

Notes

Call ``sdio_slave_load_buf`` with the handle to re-load the buffer onto the link list, and receive with the same buffer again. The address and length of the buffer got here is the same as got from `sdio_slave_get_buffer`.

References

Code

Location

esp_err_t sdio_slave_recv(sdio_slave_buf_handle_t *handle_ret, uint8_t **out_addr, size_t *out_len, TickType_t wait)

sdio_slave.c:777

esp_err_t sdio_slave_recv(sdio_slave_buf_handle_t* handle_ret, uint8_t **out_addr, size_t *out_len, TickType_t wait);

sdio_slave.h:170

Call Tree

sdio_slave_recv() calls 1 function:

sdio_slave_recv()

sdio_slave_recv_packet()

Data Use

sdio_slave_recv() reads 3 variables:

sdio_slave_ll_desc_s::length

sdio_slave_ll_desc_s::buf

recv_desc_s::::::hal_desc

sdio_slave_recv()

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