I3C stuck SDA handling

取消
显示结果 
显示  仅  | 搜索替代 
您的意思是: 

I3C stuck SDA handling

210 次查看
Bruce_Teng
Contributor I

Hi
I want to implement stuck SDA handling to recovery from a stuck SDA.
Based on MCXN547, I'm not sure how to implement it.
Is there sample code that I can use as a reference?
thanks

0 项奖励
回复
1 回复

124 次查看
Harry_Zhang
NXP Employee
NXP Employee

Hi @Bruce_Teng 

I think you can recover a stuck-SDA on an I3C (same principle as I²C) by temporarily switching the SCL/SDA pins to GPIO, clocking SCL until the slave releases SDA, issuing a STOP, then returning the pins to the I3C peripheral and re-initializing the controller. 

You can add this customer code base on the SDK I3C examples.

BR

Harry

 

0 项奖励
回复
%3CLINGO-SUB%20id%3D%22lingo-sub-2256129%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3EI3C%20%E5%8D%A1%E6%BB%9E%20SDA%20%E5%A4%84%E7%90%86%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2256129%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E4%BD%A0%E5%A5%BD%3CBR%20%2F%3E%E6%88%91%E6%83%B3%E5%AE%9E%E7%8E%B0%E5%8D%A1%E4%BD%8F%E7%9A%84%20SDA%20%E5%A4%84%E7%90%86%EF%BC%8C%E4%BB%A5%E4%BE%BF%E4%BB%8E%E5%8D%A1%E4%BD%8F%E7%9A%84%20SDA%20%E4%B8%AD%E6%81%A2%E5%A4%8D%E3%80%82%3CBR%20%2F%3E%E5%9F%BA%E4%BA%8E%20MCXN547%EF%BC%8C%E6%88%91%E4%B8%8D%E7%9F%A5%E9%81%93%E5%A6%82%E4%BD%95%E5%AE%9E%E7%8E%B0%E5%AE%83%E3%80%82%3CBR%20%2F%3E%3CSPAN%3E%E6%9C%89%E7%A4%BA%E4%BE%8B%E4%BB%A3%E7%A0%81%E5%8F%AF%E4%BB%A5%E7%94%A8%E4%BD%9C%E5%8F%82%E8%80%83%E5%90%97%EF%BC%9F%3CBR%20%2F%3E%3C%2FSPAN%3E%E8%B0%A2%E8%B0%A2%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-2256129%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CLINGO-LABEL%3E%E9%80%9A%E4%BF%A1%26amp%3B%20%E6%8E%A7%E5%88%B6%EF%BC%88I3C%20%7C%20I2C%20%7C%20SPI%20%7C%20FlexCAN%20%7C%20%E4%BB%A5%E5%A4%AA%E7%BD%91%20%7C%20FlexIO%EF%BC%89%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EMCX%20N%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2256733%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%20translate%3D%22no%22%3ERe%3A%20I3C%20stuck%20SDA%20handling%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2256733%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E4%BD%A0%E5%A5%BD%3CA%20href%3D%22https%3A%2F%2Fcommunity.nxp.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F256544%22%20target%3D%22_blank%22%3E%40Bruce_Teng%3C%2FA%3E%3C%2FP%3E%0A%3CP%3E%E6%88%91%E8%AE%A4%E4%B8%BA%E4%BD%A0%E5%8F%AF%E4%BB%A5%E9%80%9A%E8%BF%87%E6%9A%82%E6%97%B6%E5%B0%86SCL%2FSDA%E5%BC%95%E8%84%9A%E5%88%87%E6%8D%A2%E5%88%B0GPIO%EF%BC%8C%E5%AF%B9SCL%E8%BF%9B%E8%A1%8C%E8%AE%A1%E6%97%B6%E7%9B%B4%E5%88%B0%E4%BB%8E%E6%9C%BA%E9%87%8A%E6%94%BESDA%EF%BC%8C%E5%8F%91%E5%87%BA%E5%81%9C%E6%AD%A2%E4%BF%A1%E5%8F%B7%EF%BC%8C%E7%84%B6%E5%90%8E%E5%B0%86%E5%BC%95%E8%84%9A%E8%BF%94%E5%9B%9E%E5%88%B0I3C%E5%A4%96%E5%9B%B4%E8%AE%BE%E5%A4%87%E5%B9%B6%E9%87%8D%E6%96%B0%E5%88%9D%E5%A7%8B%E5%8C%96%E6%8E%A7%E5%88%B6%E5%99%A8%EF%BC%8C%E4%BB%8E%E8%80%8C%E5%9C%A8I3C%EF%BC%88%E4%B8%8EI%C2%B2C%E5%8E%9F%E7%90%86%E7%9B%B8%E5%90%8C%EF%BC%89%E4%B8%8A%E6%81%A2%E5%A4%8D%E5%8D%A1%E4%BD%8F%E7%9A%84SDA%E3%80%82%3C%2FP%3E%0A%3CP%3E%E6%82%A8%E5%8F%AF%E4%BB%A5%E5%9C%A8%20SDK%20I3C%20%E7%A4%BA%E4%BE%8B%E4%B8%AD%E6%B7%BB%E5%8A%A0%E8%AF%A5%E5%AE%A2%E6%88%B7%E4%BB%A3%E7%A0%81%E5%BA%93%E3%80%82%3C%2FP%3E%0A%3CP%3EBR%3C%2FP%3E%0A%3CP%3E%E5%93%88%E5%88%A9%3C%2FP%3E%0A%3CBR%20%2F%3E%3C%2FLINGO-BODY%3E