【sylixos】i2c设备驱动创建和使用

前提是需要已实现过i2c总线驱动

步骤

步骤分为几步：

• 创建设备 API_I2cAdapterCreate
• 传输消息 API_I2cDeviceTransfer
• 发送消息 API_I2cDeviceMasterSend
• 接收消息 API_I2cDeviceMasterRecv
• 删除设备 API_I2cDeviceDelete

示例

{
    
	uint8_t              data_buf[100]
	LW_I2C_MESSAGE       i2cWrMsg[2];
    PLW_I2C_DEVICE       pI2cDev;

    pI2cDev = API_I2cDeviceCreate("/bus/i2c/0", "i2cdev", 0x60,  0);

    API_I2cDeviceMasterSend("i2cdev", data_buf, 1);

	API_I2cDeviceMasterRecv("i2cdev", data_buf, 1);

    i2cWrMsg[0].I2CMSG_usAddr    = 0x60;
    i2cWrMsg[0].I2CMSG_usFlag    = 0;
    i2cWrMsg[0].I2CMSG_pucBuffer = (VOID*)&data_buf[1];
    i2cWrMsg[0].I2CMSG_usLen     = 1;

    i2cWrMsg[1].I2CMSG_usAddr    = i2cWrMsg[0].I2CMSG_usAddr;
    i2cWrMsg[1].I2CMSG_usFlag    = LW_I2C_M_RD;
    i2cWrMsg[1].I2CMSG_pucBuffer = data_buf;
    i2cWrMsg[1].I2CMSG_usLen     = 1;

	API_I2cDeviceTransfer("i2cdev", i2cWrMsg, 2);
}