I have a problem when i use RT1052 I2C master to read fram(mb85rc64)!

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I have a problem when i use RT1052 I2C master to read fram(mb85rc64)!

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490098084
Contributor I

Hi there,

When I used RT1052 I2C to debug FRAM, I found that I could not read more than 256 bytes of data at one time (but the write was successful), and when I read more than 256 bytes of data, the program stopped at while (0U!= (value & LPI2C_MRDR_RXEMPTY_MASK));(FSL.i2c. C Line 790), is this my program problem or an SDK driver problem?

code2.png

this is my read function!

code3.png

code stop place!

code error.png

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Alexis_A
NXP TechSupport
NXP TechSupport

Hello @490098084 ,

In section 46.3.2.1 Transmit and Command FIFO commands it mentions that the receive FIFO depth is 256 bytes. I will suggest partitioning your packet into 256 bytes.

Best Regards,

Alexis Andalon

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