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62 lines
1.6 KiB
62 lines
1.6 KiB
8 years ago
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#ifndef MAX2719_H
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#define MAX2719_H
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#include "stm32f1xx_hal.h"
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/** Generic utilities for controlling the MAX2719 display driver */
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typedef struct {
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SPI_TypeDef *SPIx; /*!< SPI iface used by this instance */
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GPIO_TypeDef *CS_GPIOx; /*!< Chip select GPIO port */
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uint16_t CS_PINx; /*!< Chip select pin mask */
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uint32_t chain_len; /*!< Number of daisy-chained drivers (for "all" or "n-th" commands */
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} MAX2719_Cfg;
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typedef enum {
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MAX2719_CMD_NOOP = 0x00,
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MAX2719_CMD_DIGIT0 = 0x01,
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MAX2719_CMD_DIGIT1 = 0x02,
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MAX2719_CMD_DIGIT2 = 0x03,
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MAX2719_CMD_DIGIT3 = 0x04,
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MAX2719_CMD_DIGIT4 = 0x05,
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MAX2719_CMD_DIGIT5 = 0x06,
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MAX2719_CMD_DIGIT6 = 0x07,
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MAX2719_CMD_DIGIT7 = 0x08,
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MAX2719_CMD_DECODE_MODE = 0x09,
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MAX2719_CMD_INTENSITY = 0x0A,
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MAX2719_CMD_SCAN_LIMIT = 0x0B,
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MAX2719_CMD_SHUTDOWN = 0x0C,
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MAX2719_CMD_DISPLAY_TEST = 0x0F,
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} MAX2719_Command;
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/**
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* @brief Send a command to a single driver
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* @param inst : config struct
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* @param nth : driver index
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* @param cmd : command
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* @param data : data byte
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*/
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void max2719_cmd(MAX2719_Cfg *inst, uint32_t nth, MAX2719_Command cmd, uint8_t data);
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/**
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* @brief Send command to all drivers, with the same data
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* @param inst : config struct
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* @param cmd : command
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* @param data : data byte
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*/
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void max2719_cmd_all(MAX2719_Cfg *inst, MAX2719_Command cmd, uint8_t data);
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/**
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* @brief Send command to all drivers, with varying data
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* @param inst : config struct
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* @param cmd : command
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* @param data : array of data bytes (must be long to cover all drivers)
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*/
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void max2719_cmd_all_data(MAX2719_Cfg *inst, MAX2719_Command cmd, uint8_t *data);
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#endif // MAX2719_H
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