i2c_cmd_handle_tcmd = i2c_cmd_link_create();// 新建操作I2C句柄 i2c_master_start(cmd);// 启动I2C i2c_master_write_byte(cmd, ( dev_addr <<1) | I2C_MASTER_WRITE, ACK_CHECK_EN);// 发送地址+写+检查ack i2c_master_write_byte(cmd, reg_addr, ACK_CHECK_EN);// 发送ID寄存器地址 i2c_...
Cloud Studio代码运行 voidI2C_WriteByte(uint8_t addr,uint8_t data){i2c_cmd_handle_t cmd=i2c_cmd_link_create();i2c_master_start(cmd);i2c_master_write_byte(cmd,(ESP_SLAVE_ADDR<<1)|WRITE_BIT,ACK_CHECK_EN);i2c_master_write_byte(cmd,addr,ACK_CHECK_EN);i2c_master_write_byte(cmd,data,...
i2c_param_config(I2C_NUM_0, &conf); return i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0);}void writeEEPROM(uint16_t address, uint8_t data){ i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, (EEPROM_ADDR ...
staticesp_err_t i2c_read(i2c_port_t i2c_num, uint8_t* data_rd,size_tsize) { if(size == 0) { returnESP_OK; } i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, ( ESP_SLAVE_ADDR << 1 ) | READ_BIT, ACK_CHECK_EN); if(s...
使用创建一个命令链接i2c_cmd_link_create()。 然后,用要发送到从站的一系列数据填充它: 起始位-i2c_master_start() 从机地址-i2c_master_write_byte()。提供单字节地址作为此函数调用的参数。 数据-一个或多个字节作为参数i2c_master_write() 停止位-i2c_master_stop() ...
i2c_cmd_link_delete(cmd); #endif return ret_val; }static int i2c_init() { int res = 0; i2c_config_t i2c_pin = { 0 }; res = get_i2c_pins(I2C_NUM_0, &i2c_pin); if (res != 0) { ESP_LOGE(TAG, "get i2c pins error"); ...
i2c_cmd_handle_t i2c_cmd = i2c_cmd_link_create();//创建IIC命令链表 i2c_master_start(i2c_cmd);//IIC开始信号发送 i2c_master_write_byte(i2c_cmd, (PCA9685_IIC_ADDR << 1) | I2C_MASTER_WRITE, true);//IIC写入地址和写入模式 i2c_master_write_byte(i2c_cmd, addr, true);//IIC写入寄存器...
1 static int i2c_device_match(struct device *dev, struct device_driver *drv) 2 { 3 struct i2c_client *client = i2c_verify_client(dev); // 通过device指针获取到对应的i2c_client指针 4 struct i2c_driver *driver; // 定义一个i2c_driver 指针 5 6 if (!client) 7 return 0; 8 9 driver ...
i2c_cmd_link_delete(cmd); free(reg_addr_and_data); return ret; }static esp_err_t ksz8863_i2c_read(uint8_t reg_addr, uint8_t *data, size_t len) { esp_err_t ret = ESP_OK; i2c_port_t i2c_port = s_ksz8863_ctrl_intf->i2c_bus_spec.i2c_port; ...
命令发送后,通过调用i2c_cmd_link_delete()释放命令链接使用的资源。 我们就可以写出下面这个函数 // 发送数据到I2C从设备staticesp_err_ti2c_master_send(uint8_t*data,size_tsize){i2c_cmd_handle_tcmd=i2c_cmd_link_create();i2c_master_start(cmd);i2c_master_write_byte(cmd,(I2C_SLAVE_ADDR<<1)|I2...