search

CircuitSetup / Expandable-6-Channel-ESP32-Energy-Meter

Hardware & Software documentation for the CircuitSetup Expandable 6 Channel ESP32 Energy Meter. Works with ESPHome and Home Assistant.
https://circuitsetup.us/product/expandable-6-channel-esp32-energy-meter/
MIT License
519 stars 104 forks source link

Chip selects in the 36 channel example #20

Closed sillygoose closed 3 years ago

sillygoose commented 3 years ago

These don't appear to be right, i get an error on the 35 as ESP32: GPIO35 (34-39) can only be used as an input pin.

and 27 doesn't appear in the expansion board J4 and J7 schematics pinouts.

...
#IC1 AddOn 2
  - platform: atm90e32
    cs_pin: 27  <==== perhaps 2?
...
#IC1 AddOn 3
  - platform: atm90e32
    cs_pin: 35  <==== perhaps 12?
...

I ran into some other quirks, not sure if I don't understand something or if my hardware is acting up. Main board and 3 expansion boards and new ESP32.

First configured with the chip selects for the three boards you sent: 0/16 2/17 12/21

Result: IO12 did not respond (blank states displayed for the 3 CT inputs on the third expansion board, first atm90e32)

Changed chip selects to: 0/16 2/17 13/21

Result: IO13 responded but problem moved to IO2 (blank states displayed for the 3 CT inputs on the second expansion board, first atm90e32) -- weird?

Changed chip selects to 0/16 2/17 15/21

Result: IO15 responded but IO2 did not respond (blank states for the 3 CT inputs on the second expansion board, first atm90e32)

Changed chip selects to 0/16 14/17 15/21

Result: This set of chip selects works and all states are reported by ESPHome. I'll live with this for now but sure would like to know if this a software or hardware issue.

CircuitSetup commented 3 years ago

What version of the add-on boards do you have? The pin assignments changed a bit over time because, like GPIO 35, you can't use it as a CS pin. That was my mistake.

For the current pin assignments, take a look here: https://github.com/CircuitSetup/Expandable-6-Channel-ESP32-Energy-Meter#add-on-boards

sillygoose commented 3 years ago

I have v1.4 rev 1 boards, at least the ones I have access to. The last order I got from you is packed away in a case and I prefer not to mess with it.

Looking at the silkscreen for CS chip selects I see, 0, 27, 2? (hidden under header), 13, 14, and 15. Since the schematic is v1.3 rev 1 perhaps they have changed? I started with the chip selects in your example before digging into the schematic and trying those values.

CircuitSetup commented 3 years ago

Sorry I didn't see your last question sooner. Yes, the CS pins changed a bit between 1.3 and 1.4 rev1. See the link above. Let me know if you have any other questions!