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SourceVuESP-IDF Framework and ExamplesESP-IDFspi_slave_transaction_t::rx_buffer

spi_slave_transaction_t::rx_buffer field

Pointer to receive buffer, or NULL for no MISO phase. When the DMA is enabled, must start at WORD boundary (``rx_buffer%4==0``), and has length of a multiple of 4 bytes.

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Declaration

from spi_slave.h:75

void *rx_buffer;

Examples

spi_slave_transaction_t::rx_buffer is referenced by 1 libraries and example projects:

receiver sample

References

from 0/1 examples

Code

Location

Referrer

void *rx_buffer; /**< Pointer to receive buffer, or NULL for no MISO phase.

spi_slave.h:75

trans->rx_buffer, pending_transaction->input_buf_len, trans->trans_len)) {

esp_openthread_spi_slave.c:67

handle_spi_transaction_done()

s_spi_transaction->rx_buffer = s_input_buf;

esp_openthread_spi_slave.c:157

otPlatSpiSlavePrepareTransaction()

priv_trans->rx_buffer = trans->rx_buffer;

spi_slave.c:327

spi_slave_setup_priv_trans()

SPI_CHECK(spihost[host]->dma_enabled == 0 || trans_desc->rx_buffer == NULL ||

spi_slave.c:382

spi_slave_queue_trans()

(esp_ptr_dma_capable(trans_desc->rx_buffer) && esp_ptr_word_aligned(trans_desc->rx_buffer) &&

spi_slave.c:383

spi_slave_queue_trans()

bool rx_aligned = (trans_desc->rx_buffer == NULL) || (esp_ptr_dma_capable(trans_desc->rx_buffer) && esp_ptr_word_aligned(trans_desc->rx_buffer) && (trans_desc->length % 8 == 0));

spi_slave.c:451

spi_slave_queue_trans_isr()

.rx_buffer = trans_desc->rx_buffer,

spi_slave.c:461

spi_slave_queue_trans_isr()

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spi_slave_transaction_t::rx_buffer is written by 1 function and is read by 4 functions:

otPlatSpiSlavePrepareTransaction()

spi_slave_transaction_t::rx_buffer

spi_slave_setup_priv_trans()

spi_slave_queue_trans()

spi_slave_queue_trans_isr()

handle_spi_transaction_done()

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