Vehicle Researcher
33d5cfc393
date: 2025-12-18T23:23:16 master commit: 3cdee7b54718ee14bd85befd6c5bad3d699c5479
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
#pragma once
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#include "board/crc.h"
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#define SPI_TIMEOUT_US 10000U
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// got max rate from hitting a non-existent endpoint
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// in a tight loop, plus some buffer
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#define SPI_IRQ_RATE 16000U
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#ifdef STM32H7
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#define SPI_BUF_SIZE 4096U
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// H7 DMA2 located in D2 domain, so we need to use SRAM1/SRAM2
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__attribute__((section(".sram12"))) extern uint8_t spi_buf_rx[SPI_BUF_SIZE];
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__attribute__((section(".sram12"))) extern uint8_t spi_buf_tx[SPI_BUF_SIZE];
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#else
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#define SPI_BUF_SIZE 1024U
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uint8_t spi_buf_rx[SPI_BUF_SIZE];
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uint8_t spi_buf_tx[SPI_BUF_SIZE];
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#endif
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#define SPI_CHECKSUM_START 0xABU
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#define SPI_SYNC_BYTE 0x5AU
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#define SPI_HACK 0x79U
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#define SPI_DACK 0x85U
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#define SPI_NACK 0x1FU
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// SPI states
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enum {
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SPI_STATE_HEADER,
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SPI_STATE_HEADER_ACK,
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SPI_STATE_HEADER_NACK,
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SPI_STATE_DATA_RX,
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SPI_STATE_DATA_RX_ACK,
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SPI_STATE_DATA_TX
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};
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extern uint16_t spi_error_count;
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#define SPI_HEADER_SIZE 7U
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// low level SPI prototypes
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void llspi_init(void);
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void llspi_mosi_dma(uint8_t *addr, int len);
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void llspi_miso_dma(uint8_t *addr, int len);
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void can_tx_comms_resume_spi(void);
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void spi_init(void);
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void spi_rx_done(void);
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void spi_tx_done(bool reset);
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