Search found 5 matches

by RichardP
Sun Nov 25, 2018 6:21 pm
Forum: ESP-IDF
Topic: using ESP32 as a MAC+PHY (disable lwIP ? )
Replies: 5
Views: 6268

Re: using ESP32 as a MAC+PHY (disable lwIP ? )

Awesome... pure gold :D

Much appreciated.

Richard
by RichardP
Sun Nov 25, 2018 12:05 pm
Forum: ESP-IDF
Topic: using ESP32 as a MAC+PHY (disable lwIP ? )
Replies: 5
Views: 6268

using ESP32 as a MAC+PHY (disable lwIP ? )

Hi all, I am trying to create a device that passes on RAW ethernet frames - so I wasnt to use the RADIO but not have an IP stack. I want to create an TCPIP_ADAPTER that just gets ethernet frames and and passes them over to WIFI for transmission and vice versa. I just want to use the ESP32 as a MAC/P...
by RichardP
Wed Aug 22, 2018 5:44 pm
Forum: ESP-IDF
Topic: I2C Reliability -
Replies: 4
Views: 5306

Re: I2C Reliability -

Unfortunately not... I thought it was working... It ran for hours until I powered off for the night. The next day the problems were back. I put the I2C bus on a scope and I can see glitches on the bus.. they are always there, just some slave devices are more sensitive than others. I have cloned the ...
by RichardP
Tue Aug 07, 2018 8:34 am
Forum: ESP-IDF
Topic: I2C Reliability -
Replies: 4
Views: 5306

Re: I2C Reliability -

Hmm.. pictures went funny... The pullup is a 3k3 (it was a typo) - but its not the ESP32. I have got down to the Si570 not working properly if the CLK+ line is not terminated. (I left it floating, I added a load to the CLK+ line and it seems to be better)

Regards,
Richard
by RichardP
Mon Aug 06, 2018 7:56 am
Forum: ESP-IDF
Topic: I2C Reliability -
Replies: 4
Views: 5306

I2C Reliability -

Hi all, Using a ESP32 connected to two devices on I2C I get very erratic behaviour. I have a PCF IO expander and a SI570 Controllable oscillator. I have the I2C lines on IO 22+23 and a 330ohm pullup resistors. On first power-up, it seems to work, but then things go bad. I2Ctext_nack.png Attached is ...