121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/***
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* @Author: xxx
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* @Date: 2023-08-01 15:15:53
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* @LastEditors: xxx
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* @LastEditTime: 2023-08-10 10:37:54
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* @Description: SPI驱动, 用于SPI设备的读写操作
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* @email:
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* @Copyright (c) 2023 by xxx, All Rights Reserved.
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*/
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/**
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使用教程：
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1. 初始化
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spi_t *_spi = NULL;
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spi_gpio_group_t gpios;
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gpios.cs = gpio_create(EEPROM_M95_CS_PORT, EEPROM_M95_CS_PIN);
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gpios.mosi = gpio_create(SPI_MOSI_GPIO_Port, SPI_MOSI_Pin);
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gpios.sck = gpio_create(SPI_CLK_GPIO_Port, SPI_CLK_Pin);
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gpios.miso = gpio_create(SPI_MISO_GPIO_Port, SPI_MISO_Pin);
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gpios.rst = gpio_create(NULL, 0);
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gpios.rdy = gpio_create(NULL, 0);
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_spi = spi_create(SPI_TYPE_NORMAL, gpios, 0);
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2. 使用
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_spi->gpios.cs->reset(*_spi->gpios.cs);
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_spi->interface.u.normal.spi_send(_spi, M95_CMD_READ);
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_spi->interface.u.normal.spi_send(_spi, read_addr >> 8);
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_spi->interface.u.normal.spi_send(_spi, read_addr & 0xff);
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for (uint16_t i = 0; i < length; i++)
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{
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data[i] = _spi->interface.u.normal.spi_send(_spi, M95_DUMMY_BYTE);
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}
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_spi->gpios.cs->set(*_spi->gpios.cs);
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3. 使用LCD
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spi_t *_spi = NULL;
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spi_gpio_group_t gpios;
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gpios.cs = gpio_create(LCD_CS_GPIO_Port, LCD_CS_Pin);
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gpios.mosi = gpio_create(SPI_MOSI_GPIO_Port, SPI_MOSI_Pin);
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gpios.sck = gpio_create(SPI_CLK_GPIO_Port, SPI_CLK_Pin);
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gpios.rst = gpio_create(LCD_RST_GPIO_Port, LCD_RST_Pin);
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gpios.rdy = gpio_create(LCD_RS_GPIO_Port, LCD_RS_Pin);
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gpios.miso = gpio_create(NULL, 0);
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_spi = spi_create(SPI_TYPE_LCD, gpios, 0);
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_spi->interface.hardware_spi(_spi); // LCD模拟IO比较慢
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_spi->spix = SPI1;
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lcd = lcd_create(_spi);
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lcd->driver.init(lcd);
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*/
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#ifndef __SPIS_H__
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#define __SPIS_H__
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#include "lib.h"
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#include "gpios.h"
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#define SPI_ENABLE(SPIX) LL_SPI_Enable(SPIX)
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typedef struct SPIS spi_t;
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typedef enum
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{
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SPI_TYPE_NORMAL = 0, // SPI1:NORMAL
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SPI_TYPE_LCD, // SPI2:LCD
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SPI_TYPE_MAX,
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} spi_type_e;
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typedef struct
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{
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// NORMAL:通过SPI写单个寄存器
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uint8_t (*write_reg)(spi_t *handle, uint8_t reg, uint8_t data);
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// NORMAL:通过SPI读取单个寄存器值
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uint8_t (*read_reg)(spi_t *handle, uint8_t reg);
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uint8_t (*read_drdy)(spi_t *handle); // 获取SPI DRDY引脚的值
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uint8_t (*write_regs)(spi_t *handle, uint8_t reg, uint8_t *data, uint8_t len); // 通过SPI写多个寄存器
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uint8_t (*read_regs)(spi_t *handle, uint8_t reg, uint8_t *data, uint8_t len); // 通过SPI读多个寄存器
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uint8_t (*spi_send)(spi_t *handle, uint8_t data); // 通过SPI发送数据
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} spi_normal_interface_t;
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typedef struct
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{
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// LCD:通过SPI写命令
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uint8_t (*write_cmd)(spi_t *handle, uint8_t cmd);
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// LCD:通过SPI写数据
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uint8_t (*write_data)(spi_t *handle, uint8_t *data, uint16_t len);
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} spi_lcd_interface_t;
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typedef struct
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{
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union
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{
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spi_normal_interface_t normal;
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spi_lcd_interface_t lcd;
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} u;
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void (*hardware_spi)(spi_t *handle, SPI_TypeDef *spix); // 硬件SPI
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} spi_interface_t;
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typedef struct
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{
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gpio_t *mosi; // MOSI
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gpio_t *miso; // MISO
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gpio_t *sck; // SCK
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gpio_t *cs; // CS
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gpio_t *rst; // RST
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gpio_t *rdy; // DRDY
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} spi_gpio_group_t;
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struct SPIS
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{
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spi_type_e spi_type; // SPI类型
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uint16_t delay_ticks; // 延时多少个NOP
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spi_gpio_group_t gpios; // SPI引脚
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spi_interface_t interface; // SPI接口
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BOOL simulate_gpio; // 是否模拟GPIO,默认使用IO模拟SPI
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SPI_TypeDef *spix; // SPI外设
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};
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extern spi_t *spi_create(spi_type_e spi_type, spi_gpio_group_t gpios, uint16_t delay_ticks); // 创建SPI
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extern void spi_free(spi_t *spi); // 释放SPI
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#endif // __SPIS_H__
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