TCA6416驱动
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#ifndef __TCA6416_H
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#define __TCA6416_H
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#include "stm32f1xx_hal.h"
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/* TCA6416 I2C地址 */
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#define TCA6416_ADDR 0x20 // 基础地址 (A0=A1=A2=GND)
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/* 寄存器地址定义 */
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#define TCA6416_INPUT_PORT0 0x00 // 输入端口0
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#define TCA6416_INPUT_PORT1 0x01 // 输入端口1
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#define TCA6416_OUTPUT_PORT0 0x02 // 输出端口0
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#define TCA6416_OUTPUT_PORT1 0x03 // 输出端口1
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#define TCA6416_CONFIG_PORT0 0x06 // 配置端口0
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#define TCA6416_CONFIG_PORT1 0x07 // 配置端口1
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#define TCA6416_POL_INV_PORT0 0x04 // 极性反转端口0
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#define TCA6416_POL_INV_PORT1 0x05 // 极性反转端口1
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/* 函数声明 */
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HAL_StatusTypeDef TCA6416_Init(I2C_HandleTypeDef *hi2c);
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HAL_StatusTypeDef TCA6416_WritePort(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t data);
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HAL_StatusTypeDef TCA6416_ReadPort(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t *data);
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HAL_StatusTypeDef TCA6416_SetPortDirection(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t direction);
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HAL_StatusTypeDef TCA6416_SetPortPolarity(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t polarity);
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HAL_StatusTypeDef TCA6416_WritePin(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t pin, uint8_t state);
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HAL_StatusTypeDef TCA6416_ReadPin(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t pin, uint8_t *state);
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#endif /* __TCA6416_H */
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#include "TCA6416.h"
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/**
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* @brief 初始化TCA6416
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* @param hi2c: I2C句柄指针
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_Init(I2C_HandleTypeDef *hi2c)
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{
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HAL_StatusTypeDef status;
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// 默认将所有引脚设置为输入
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status = TCA6416_SetPortDirection(hi2c, 0, 0xFF);
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if (status != HAL_OK) return status;
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status = TCA6416_SetPortDirection(hi2c, 1, 0xFF);
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if (status != HAL_OK) return status;
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// 设置默认输出值为0
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status = TCA6416_WritePort(hi2c, 0, 0x00);
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if (status != HAL_OK) return status;
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status = TCA6416_WritePort(hi2c, 1, 0x00);
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if (status != HAL_OK) return status;
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// 设置默认极性（非反转）
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status = TCA6416_SetPortPolarity(hi2c, 0, 0x00);
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if (status != HAL_OK) return status;
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status = TCA6416_SetPortPolarity(hi2c, 1, 0x00);
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return status;
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}
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/**
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* @brief 向端口写入数据
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param data: 要写入的数据
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_WritePort(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t data)
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{
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uint8_t reg_addr = (port == 0) ? TCA6416_OUTPUT_PORT0 : TCA6416_OUTPUT_PORT1;
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return HAL_I2C_Mem_Write(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, &data, 1, HAL_MAX_DELAY);
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}
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/**
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* @brief 从端口读取数据
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param data: 存储读取数据的指针
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_ReadPort(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t *data)
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{
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uint8_t reg_addr = (port == 0) ? TCA6416_INPUT_PORT0 : TCA6416_INPUT_PORT1;
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return HAL_I2C_Mem_Read(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, data, 1, HAL_MAX_DELAY);
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}
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/**
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* @brief 设置端口方向（输入/输出）
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param direction: 0 = 输出, 1 = 输入
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_SetPortDirection(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t direction)
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{
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uint8_t reg_addr = (port == 0) ? TCA6416_CONFIG_PORT0 : TCA6416_CONFIG_PORT1;
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return HAL_I2C_Mem_Write(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, &direction, 1, HAL_MAX_DELAY);
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}
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/**
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* @brief 设置端口极性
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param polarity: 0 = 非反转, 1 = 反转
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_SetPortPolarity(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t polarity)
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{
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uint8_t reg_addr = (port == 0) ? TCA6416_POL_INV_PORT0 : TCA6416_POL_INV_PORT1;
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return HAL_I2C_Mem_Write(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, &polarity, 1, HAL_MAX_DELAY);
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}
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/**
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* @brief 写入单个引脚
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param pin: 引脚号（0-7）
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* @param state: 引脚状态（0或1）
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_WritePin(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t pin, uint8_t state)
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{
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HAL_StatusTypeDef status;
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uint8_t current_data;
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uint8_t reg_addr = (port == 0) ? TCA6416_OUTPUT_PORT0 : TCA6416_OUTPUT_PORT1;
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// 读取当前端口值
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status = HAL_I2C_Mem_Read(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, ¤t_data, 1, HAL_MAX_DELAY);
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if (status != HAL_OK) return status;
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// 修改特定引脚
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if (state)
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current_data |= (1 << pin);
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else
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current_data &= ~(1 << pin);
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// 写回修改后的值
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return HAL_I2C_Mem_Write(hi2c, TCA6416_ADDR << 1, reg_addr, I2C_MEMADD_SIZE_8BIT, ¤t_data, 1, HAL_MAX_DELAY);
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}
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/**
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* @brief 读取单个引脚
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* @param hi2c: I2C句柄指针
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* @param port: 端口号（0或1）
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* @param pin: 引脚号（0-7）
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* @param state: 存储引脚状态的指针
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* @retval HAL状态
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*/
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HAL_StatusTypeDef TCA6416_ReadPin(I2C_HandleTypeDef *hi2c, uint8_t port, uint8_t pin, uint8_t *state)
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{
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HAL_StatusTypeDef status;
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uint8_t port_data;
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status = TCA6416_ReadPort(hi2c, port, &port_data);
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if (status != HAL_OK) return status;
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*state = (port_data >> pin) & 0x01;
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return HAL_OK;
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}
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