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No response from OV5640

Question asked by Tetsuya Sugiyama on Apr 7, 2020
Latest reply on Apr 9, 2020 by igorpadykov

I am making a program that uses MINISASTOCSI (OV5640) and cortex-M4 to communicate by I2C with iMX8MminiEVK.
However, I cannot confirm the response from the I2C camera.
The I2C driver uses MCUexpressoSDK (SDK_2.7.0).
When I use an oscilloscope to look at the I2C SDA and SCL lines, I have confirmed that the OV5640 does not respond with an ACK to the I2C slave ID but becomes a NACK.
Slave address is set to 0x3c.
"PWDN" and "RESETB" of OV5640 are controlled by referring to "ov5640_probe" of "ov5640_v2.c" of "i.MX Linux Rev. L4.19.35_1.1.0, 11/2019".
Is there anything else to be aware of?