50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/**
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* @file tms2812.h
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* @brief Shared PM67/TMS320F2812 legacy upload protocol.
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*/
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#ifndef TMS2812_H
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#define TMS2812_H
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TMS2812_CMD_UPLOAD 52U
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#define TMS2812_UPLOAD_REQUEST_SIZE 12U
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#define TMS2812_UPLOAD_RESPONSE_OVERHEAD 8U
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typedef enum {
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TMS2812_OK = 0,
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TMS2812_ERROR_ARGUMENT = -1,
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TMS2812_ERROR_RANGE = -2,
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TMS2812_ERROR_LENGTH = -3,
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TMS2812_ERROR_CRC = -4,
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TMS2812_ERROR_HEADER = -5,
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TMS2812_ERROR_CAPACITY = -6
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} tms2812_status_t;
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uint16_t tms2812_crc16(const uint8_t *data, size_t size);
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size_t tms2812_build_upload_request(
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uint8_t controller, uint32_t word_address, uint32_t byte_count,
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uint8_t *output, size_t output_size);
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size_t tms2812_expected_upload_response_size(uint32_t byte_count);
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int tms2812_validate_upload_response(
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const uint8_t *data, size_t size, uint8_t controller,
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uint32_t byte_count);
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int tms2812_decode_upload_response(
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const uint8_t *data, size_t size, uint8_t controller,
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uint32_t byte_count, uint8_t *output, size_t output_size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* TMS2812_H */
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