I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
Read OV2640_PID: 0x0 failed!
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
Read OV2640_VER_REG: 0xff failed!
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 2]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 2]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 2]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
I2C_IST[0xd305e400, 1]: ACK NOT received
I2C_IST[0xd305e400, 2]: ACK NOT received
I2C_IST[0xd305e400, 0]: ACK NOT received
------最佳解决方案--------------------
先验证下IIC通信是否正常？
然后看看设备地址是不是正确？
看你调试信息，基本是这两个问题
------其他解决方案--------------------
除了上面说的，还有可能你SDA数据线没有上啦电阻。若是买的正常能用的开发板，那应该不是硬件问题，应该是软件问题。
------其他解决方案--------------------
除了上面说的，还有可能你SDA数据线没有上啦电阻。若是买的正常能用的开发板，那应该不是硬件问题，应该是软件问题。
------其他解决方案--------------------
谢谢各位
------其他解决方案--------------------
设备地址是2641，是PDF上给的