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SourceVuESP-IDF Framework and Exampleshost sampleessl_spi_send_packet()

essl_spi_send_packet() function

Send a packet to Slave

Syntax

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Summary

Declaration

Definition

from essl_spi.h:123

esp_err_t essl_spi_send_packet(void *arg, const void *data, size_t size, uint32_t wait_ms);

Implemented in essl_spi.c:456

Arguments

Argument

Description

arg

Context of the component. (Member ``arg`` from ``essl_handle_t``)

data

Address of the data to send

size

Size of the data to send.

wait_ms

Time to wait before timeout (reserved for future use, user should set this to 0).

Return value

- ESP_OK: On success - ESP_ERR_INVALID_STATE: ESSL SPI has not been initialized. - ESP_ERR_INVALID_ARG: The data address is not DMA capable - ESP_ERR_INVALID_SIZE: Master will send ``size`` bytes of data but Slave did not load enough RX buffer

References

Code

Location

Referrer

esp_err_t essl_spi_send_packet(void *arg, const void *data, size_t size, uint32_t wait_ms)

essl_spi.c:456

esp_err_t essl_spi_send_packet(void *arg, const void *data, size_t size, uint32_t wait_ms);

essl_spi.h:123

*dev = ESSL_SPI_DEFAULT_DEV_FUNC();

essl_spi.c:289

essl_spi_init_dev()

Call Tree

essl_spi_send_packet() calls 7 functions:

essl_spi_send_packet()

esp_ptr_dma_capable()

esp_log_timestamp()

esp_log_write()

essl_spi_wrdma_done()

essl_spi_wrdma_seg()

essl_spi_get_tx_buffer_num()

essl_spi_update_tx_buffer_num()

Data Use

essl_spi_send_packet() reads 11 variables and writes 2 variables:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_WARN

esp_log_level_t::ESP_LOG_INFO

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

TAG

essl_spi_context_t::spi

essl_spi_context_t::::sent_buf_num

essl_spi_context_t::::slave_rx_buf_num

essl_spi_context_t::::tx_buffer_size

essl_spi_context_t::master_out

essl_spi_send_packet()

essl_spi_init_dev()

essl_spi_context_t::::sent_buf_num

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