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53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
#include "sd_mmc_spi_impl.h"
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#include "hal_io.h"
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#include "hal_spi_m_sync.h"
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static struct io_descriptor* spi_inst = NULL;
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int32_t sd_mmc_spi_impl_init(void)
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{
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PORT->Group[SD_MMC_SPI_nCS_PORT].DIR.reg |= (1 << SD_MMC_SPI_nCS_PIN);
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PORT->Group[SD_MMC_SPI_nCS_PORT].OUT.reg |= (1 << SD_MMC_SPI_nCS_PIN);
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if(ERR_NONE != spi_m_sync_get_io_descriptor(&SPI_SD_MMC, &spi_inst))
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{
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return -1;
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}
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if(!spi_inst)
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{
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return -1;
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}
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spi_m_sync_enable(&SPI_SD_MMC);
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return 0;
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}
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int32_t sd_mmc_spi_impl_read(uint8_t* const bytes, uint16_t len)
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{
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return io_read(spi_inst, bytes, len);
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}
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int32_t sd_mmc_spi_impl_write(const uint8_t* const bytes, uint16_t len)
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{
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return io_write(spi_inst, bytes, len);
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}
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int32_t sd_mmc_spi_impl_select_device()
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{
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PORT->Group[SD_MMC_SPI_nCS_PORT].OUT.reg &= ~(1 << SD_MMC_SPI_nCS_PIN);
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return 0;
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}
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int32_t sd_mmc_spi_impl_deselect_device()
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{
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PORT->Group[SD_MMC_SPI_nCS_PORT].OUT.reg |= (1 << SD_MMC_SPI_nCS_PIN);
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return 0;
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}
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bool sd_mmc_spi_impl_check_cd()
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{
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return PORT->Group[SD_MMC_SPI_CD_PORT].IN.reg & (1 << SD_MMC_SPI_CD_PIN);
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}
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