I2C use by ULP and CPU

sch0bert
Posts: 16
Joined: Thu Apr 11, 2019 9:58 pm

I2C use by ULP and CPU

Postby sch0bert » Tue Jun 04, 2019 5:59 pm

Hello,

I'm trying to use the same pins for I2C in ULP and CPU (active mode) but when I try to use it, nothing works. Is it possible to have both configured to use the same pins or should I use different ones?

I'm using SDA pin as the 33 and SCL as the 32. Also I tested both in separated programs and they worked, no when I put them together.

Regards,
Pascal.

WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: I2C use by ULP and CPU

Postby WiFive » Tue Jun 04, 2019 6:47 pm

If they work in separate programs they should work together, just not at the same time.

sch0bert
Posts: 16
Joined: Thu Apr 11, 2019 9:58 pm

Re: I2C use by ULP and CPU

Postby sch0bert » Tue Jun 04, 2019 10:29 pm

Ok, will then debug further to see what's going on. Thanks!

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