82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
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/*
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* Copyright (c) 2022 hpmicro
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#ifndef HPM_COMPONENT_SPI_H
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#define HPM_COMPONENT_SPI_H
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#include "hpm_common.h"
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#include "hpm_spi_drv.h"
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#include "hpm_dma_drv.h"
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#include "hpm_dmamux_drv.h"
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#include "hpm_misc.h"
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#include "hpm_l1c_drv.h"
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#ifndef SPI_CS_ACTIVE
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#define SPI_CS_ACTIVE 0
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#endif
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/* Every transaction can be delineated by 3 dma descriptions: SPI control, SPI cmd, SPI data */
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#define SPI_DMA_DESC_COUNT_PER_TRANS (3U)
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typedef struct {
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DMA_Type *dma_ptr;
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DMAMUX_Type *dmamux_ptr;
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uint8_t rx_dma_ch;
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uint8_t tx_dma_ch;
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uint8_t rx_dmamux_ch;
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uint8_t tx_dmamux_ch;
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uint8_t rx_req;
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uint8_t tx_req;
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} spi_dma_context_t;
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typedef struct {
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SPI_Type *ptr;
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uint32_t cs_pin;
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uint8_t cmd;
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uint8_t *rx_buff;
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uint8_t *tx_buff;
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uint8_t running_core;
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uint32_t addr;
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uint32_t rx_size;
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uint32_t tx_size;
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uint32_t per_trans_max;
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uint32_t *spi_transctrl;
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void (*write_cs)(uint32_t cs_pin, uint8_t state);
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spi_dma_context_t dma_context;
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dma_linked_descriptor_t *dma_linked_descriptor;
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} spi_context_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief hpm_spi setup dma transfer
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*
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* @param[in] spi_context A pointer to the struct of "spi_context_t"
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* @param[in] spi_config A pointer to the struct of "spi_control_config_t"
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* @retval status_success if SPI transfers data successfully.
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*/
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hpm_stat_t hpm_spi_setup_dma_transfer(spi_context_t *context, spi_control_config_t *config);
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/*
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* SPI release gpio pin if gpio use for SPI CS function
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*/
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/**
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* @brief hpm_spi releases gpio cs pin after SPI transfer completed
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*
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* @param[in] spi_context A pointer to the struct of "spi_context_t"
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* @retval status_success if SPI releases gpio cs pin successfully.
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*/
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hpm_stat_t hpm_spi_release_gpio_cs(spi_context_t *context);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HPM_COMPONENT_SPI_H */
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