81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
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#include "fsl_common.h"
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#include "fsl_spi.h"
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#include "fsl_debug_console.h"
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#include "board_setup.h"
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#include "tx_spi.h"
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#include "tx_api.h"
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static void _spi_callback(SPI_Type *base,
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spi_slave_handle_t *drv_handle,
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status_t status, void *user_data)
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{
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tx_spi_slave_context_t *context = user_data;
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context->result = status;
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tx_semaphore_put(&context->sema_sync);
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}
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UINT tx_spi_slave_transfer(tx_spi_slave_context_t *context,
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uint8_t *tx_buffer, uint8_t *rx_buffer,
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uint32_t data_size)
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{
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spi_slave_config_t config;
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spi_transfer_t transfer;
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UINT status = TX_SUCCESS;
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status_t ret;
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assert(tx_buffer != NULL || rx_buffer != NULL);
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assert(data_size != 0);
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assert(data_size % 4 == 0);
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assert(data_size <= MAX_BYTES_PER_FRAME);
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SPI_SlaveGetDefaultConfig(&config);
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config.sselPol = (spi_spol_t)EXAMPLE_SLAVE_SPI_SPOL;
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SPI_SlaveInit(context->base, &config);
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SPI_SlaveTransferCreateHandle(context->base, &context->drv_handle,
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_spi_callback, (void *)context);
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transfer.txData = tx_buffer;
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transfer.rxData = rx_buffer;
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transfer.dataSize = data_size;
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transfer.configFlags = 0;
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ret = SPI_SlaveTransferNonBlocking(context->base,
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&context->drv_handle,
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&transfer);
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if (ret != kStatus_Success)
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{
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return TX_NOT_DONE;
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}
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return status;
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}
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UINT tx_init_spi_slave(tx_spi_slave_context_t *context)
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{
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UINT status = TX_SUCCESS;
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TX_MEMSET(context, 0, sizeof(tx_spi_slave_context_t));
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status = tx_mutex_create(&context->lock, "LOCK", TX_NO_INHERIT);
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if (status != TX_SUCCESS)
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{
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return status;
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}
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status = tx_semaphore_create(&context->sema_sync, "SYNC", 0);
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if (status != TX_SUCCESS)
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{
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return status;
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}
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context->base = EXAMPLE_SPI_SLAVE;
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return TX_SUCCESS;
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}
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