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- Re: FXPS7115DS4T1
FXPS7115DS4T1
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As of February 2, 2026, the NXP MEMS Sensor products have been transferred to STMicroelectronics. For details on the transferred products, see this page. Please reach out to STMicroelectronics for further information.
FXPS7115DS4T1
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Can anyone share SPI messages with calculated CRC. To start and read pressure and temperature?
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Thank you Jozef, I have looked at that but I do not need CRC and it is desperately slow to live calculate. I will attempt to use online tool to calculate CRC. Surely someone has a real example, not a code example? Perhaps it will get supported with SPIGen.exe, which is very useful tool.
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No examples only code. I'll look at the Infineon and ST offerings
JozefKozon
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Dear Richard,
unfortunately I didn't find the FXPS7115D SPI messages (perhaps somebody else will share them) in older cases, but I have found a description for CRC calculation from an application engineer. Please see below.
In order to build CRC checksum on the SPI command, you can take ”8-bit crc” fields as either ‘0000 0000’ or ‘1111 1111’ to complete the total 32-bit command. Calculate 8-bit CRC using the default polynomial on the 32-bit command and then replace calculated 8-bit CRC value in the ”8-bit crc” fields before sending the command. If the calculated CRC does not match the transmitted CRC, the command is ignored and the device responds with the SPI error response.
I have also found FXPS7xxx SW examples. Please find it attached.
With Best Regards,
Jozef
