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FXPS7115DS4T1

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FXPS7115DS4T1

‎03-25-2025 04:53 AM
2,450 次查看
Fast
Contributor V

Can anyone share SPI messages with calculated CRC. To start and read pressure and temperature?

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3 回复数

‎03-25-2025 05:56 AM
2,439 次查看
Fast
Contributor V

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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‎04-02-2025 03:49 AM
2,382 次查看
Fast
Contributor V

No examples only code. I'll look at the Infineon and ST offerings

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‎03-25-2025 05:44 AM
2,434 次查看
JozefKozon
NXP TechSupport
NXP TechSupport

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

fxps7xxx.zip
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%3CLINGO-SUB%20id%3D%22lingo-sub-2067681%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3EFXPS7115DS4T1%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2067681%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E6%9C%89%E8%B0%81%E8%83%BD%E5%88%86%E4%BA%AB%E8%AE%A1%E7%AE%97%E5%87%BA%20CRC%20%E7%9A%84%20SPI%20%E4%BF%A1%E6%81%AF%E3%80%82%E5%90%AF%E5%8A%A8%E5%B9%B6%E8%AF%BB%E5%8F%96%E5%8E%8B%E5%8A%9B%E5%92%8C%E6%B8%A9%E5%BA%A6%EF%BC%9F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2072803%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%20translate%3D%22no%22%3ERe%3A%20FXPS7115DS4T1%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2072803%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E6%B2%A1%E6%9C%89%E7%A4%BA%E4%BE%8B%EF%BC%8C%E5%8F%AA%E6%9C%89%E4%BB%A3%E7%A0%81%E3%80%82%E6%88%91%E4%BC%9A%E7%9C%8B%E7%9C%8B%E8%8B%B1%E9%A3%9E%E5%87%8C%E5%92%8C%20ST%20%E7%9A%84%E4%BA%A7%E5%93%81%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2067733%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%20translate%3D%22no%22%3ERe%3A%20FXPS7115DS4T1%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2067733%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E8%B0%A2%E8%B0%A2%E4%BD%A0%EF%BC%8CJozef%EF%BC%8C%E6%88%91%E5%B7%B2%E7%BB%8F%E7%9C%8B%E8%BF%87%E4%BA%86%EF%BC%8C%E4%BD%86%E6%88%91%E4%B8%8D%E9%9C%80%E8%A6%81%20CRC%EF%BC%8C%E8%80%8C%E4%B8%94%E5%AE%83%E7%9A%84%E8%AE%A1%E7%AE%97%E9%80%9F%E5%BA%A6%E9%9D%9E%E5%B8%B8%E6%85%A2%E3%80%82%E6%88%91%E5%B0%86%E5%B0%9D%E8%AF%95%E4%BD%BF%E7%94%A8%E5%9C%A8%E7%BA%BF%E5%B7%A5%E5%85%B7%E8%AE%A1%E7%AE%97%20CRC%E3%80%82%E8%82%AF%E5%AE%9A%E6%9C%89%E4%BA%BA%E6%9C%89%E7%9C%9F%E5%AE%9E%E7%9A%84%E7%A4%BA%E4%BE%8B%EF%BC%8C%E8%80%8C%E4%B8%8D%E6%98%AF%E4%BB%A3%E7%A0%81%E7%A4%BA%E4%BE%8B%E5%90%A7%EF%BC%9F%E4%B9%9F%E8%AE%B8%20SPIGen.exe%20%E4%BC%9A%E6%94%AF%E6%8C%81%E5%AE%83%E3%80%81%E8%BF%99%E6%98%AF%E4%B8%80%E4%B8%AA%E9%9D%9E%E5%B8%B8%E6%9C%89%E7%94%A8%E7%9A%84%E5%B7%A5%E5%85%B7%E3%80%82%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2067713%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%20translate%3D%22no%22%3ERe%3A%20FXPS7115DS4T1%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2067713%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E4%BA%B2%E7%88%B1%E7%9A%84%E7%90%86%E6%9F%A5%E5%BE%B7%3C%2FP%3E%0A%3CP%3E%E9%81%97%E6%86%BE%E7%9A%84%E6%98%AF%EF%BC%8C%E6%88%91%E6%B2%A1%E6%9C%89%E6%89%BE%E5%88%B0%20FXPS7115D%20SPI%20%E4%BF%A1%E6%81%AF%E7%9A%84%E6%97%A7%E7%89%88%E6%9C%AC%EF%BC%88%E4%B9%9F%E8%AE%B8%E5%85%B6%E4%BB%96%E4%BA%BA%E4%BC%9A%E5%88%86%E4%BA%AB%EF%BC%89%EF%BC%8C%E4%BD%86%E6%88%91%E6%89%BE%E5%88%B0%E4%BA%86%E4%B8%80%E4%BD%8D%E5%BA%94%E7%94%A8%E5%B7%A5%E7%A8%8B%E5%B8%88%E5%AF%B9%20CRC%20%E8%AE%A1%E7%AE%97%E7%9A%84%E6%8F%8F%E8%BF%B0%E3%80%82%E8%AF%B7%E5%8F%82%E8%A7%81%E4%B8%8B%E6%96%87%E3%80%82%20%3C%2FP%3E%0A%3CP%3E%3CEM%3E%E4%B8%BA%E4%BA%86%E5%9C%A8%20SPI%20%E5%91%BD%E4%BB%A4%E4%B8%8A%E6%9E%84%E5%BB%BA%20CRC%20%E6%A0%A1%E9%AA%8C%E5%92%8C%EF%BC%8C%E5%8F%AF%E4%BB%A5%E5%B0%86%20%E2%80%9C8%20%E4%BD%8D%20crc%E2%80%9D%20%E5%AD%97%E6%AE%B5%E4%BD%9C%E4%B8%BA%20%E2%80%9C0000%200000%E2%80%9D%20%E6%88%96%20%E2%80%9C1111%201111%E2%80%9D%20%E6%9D%A5%E5%AE%8C%E6%88%90%E6%80%BB%E5%85%B1%2032%20%E4%BD%8D%E5%91%BD%E4%BB%A4%E3%80%82%E4%BD%BF%E7%94%A8%2032%20%E4%BD%8D%E5%91%BD%E4%BB%A4%E4%B8%8A%E7%9A%84%E9%BB%98%E8%AE%A4%E5%A4%9A%E9%A1%B9%E5%BC%8F%E8%AE%A1%E7%AE%97%208%20%E4%BD%8D%20CRC%EF%BC%8C%E7%84%B6%E5%90%8E%E5%9C%A8%E5%8F%91%E9%80%81%E5%91%BD%E4%BB%A4%E5%89%8D%E5%9C%A8%20%228%20%E4%BD%8D%20CRC%20%22%E5%AD%97%E6%AE%B5%E4%B8%AD%E6%9B%BF%E6%8D%A2%E8%AE%A1%E7%AE%97%E5%87%BA%E7%9A%84%208%20%E4%BD%8D%20CRC%20%E5%80%BC%E3%80%82%E5%A6%82%E6%9E%9C%E8%AE%A1%E7%AE%97%E5%87%BA%E7%9A%84CRC%E4%B8%8E%E4%BC%A0%E8%BE%93%E7%9A%84CRC%E4%B8%8D%E5%8C%B9%E9%85%8D%EF%BC%8C%E5%88%99%E8%AF%A5%E5%91%BD%E4%BB%A4%E5%B0%86%E8%A2%AB%E5%BF%BD%E7%95%A5%EF%BC%8C%E8%AE%BE%E5%A4%87%E5%B0%86%E4%BB%A5SPI%E9%94%99%E8%AF%AF%E5%93%8D%E5%BA%94%E8%BF%9B%E8%A1%8C%E5%93%8D%E5%BA%94%E3%80%82%3C%2FEM%3E%3C%2FP%3E%0A%3CP%3E%E6%88%91%E8%BF%98%E6%89%BE%E5%88%B0%E4%BA%86%20FXPS7xxx%20SW%20%E7%A4%BA%E4%BE%8B%E3%80%82%E8%AF%B7%E8%A7%81%E9%99%84%E4%BB%B6%E3%80%82%20%3C%2FP%3E%0A%3CP%3E%E8%87%B4%E4%BB%A5%E6%9C%80%E5%B4%87%E9%AB%98%E7%9A%84%E6%95%AC%E6%84%8F%3C%2FP%3E%0A%3CP%3E%E7%BA%A6%E7%91%9F%E5%A4%AB%3C%2FP%3E%3C%2FLINGO-BODY%3E