Question about MCP32017 only 8 pins found

[Helmut1965]

Dear Guys,
maybe somebody of you can help here. I've connected MCP23017, running with driver22 shows the following:

STATUS8 = {"StatusSNS":{"Time":"2025-08-03T10:17:24","MCP230XX":{"D0":0,"D1":0,"D2":0,"D3":0,"D4":0,"D5":0,"D6":0,"D7":1,"D8":0,"D9":0,"D10":0,"D11":0,"D12":0,"D13":0,"D14":0,"D15":1}}}

Which is good so far, also all the states worked. Now I want to switch to mode 2
Driver Status is:
{"I2CDriver":"2,7,8,9,10,11,12,13,14,15,17,18,20,!22,24,29,31,36,41,42,44,46,48,58,62,65,69,76,77,82,89"}. I think Mode1 driver is disabled and Mode2 driver is enabled now.
I create a file: mcp23x.dat with the content:
{"NAME":"MCP23017 A=B1-8, B=B9-16","GPIO":[191,192,193,194,195,196,197,0,198,199,200,201,202,203,204,205,0]}
File upload is done by Mqtt cmnd URL Fetch. Now I do a restart 1.

The Serial LOG (4) shows the following
00:00:00.001 HDW: ESP32-D0WD v1.0
00:00:00.043 UFS: FlashFS mounted with 296 kB free
00:00:00.063 CFG: Loaded from File, Count 24
00:00:00.072 QPC: Count 1
00:00:00.076 I2C: Bus1 using GPIO04(SCL) and GPIO05(SDA)
00:00:00.100 I2C: MCP23017 found at 0x20
00:00:00.135 MCP: Pins 8 (S8/B0/R0)
00:00:00.185 BRY: Berry initialized, RAM used 3493 bytes
00:00:00.202 Project home - Tasmota Version 15.0.1(tasmota32)-3_1_3(2025-08-02T17:13:35)
00:00:01.110 WIF: Connecting to AP1 iot Channel 6 BSSId 1E:E8:29:ED:4B:E1 in mode HT40 as 943CC639D100-4352...

As you can see here, there are only 8 Pins detected, I try also to use rule1 for the JSON mcp23x.dat. Nothing works, always only 8 Pins found.
Is there somebody out there with an idea? I searched the net already, wasn't able to find any additional ideas to solve. For sure, I can live with mode1, nevertheless it would be interesting to learn, what's the problem.
Thanks
Helmut

[sfromis]

While I'm not using the chips, I'd compile to only have the mode 2 driver, instead of having both in the same build.

[Helmut1965]

Hi, for Sure, I tried this as well, same result also only 8 pins

[sfromis]

Maybe try having 16 pins in mcp23x.dat instead of the error of having 17.

[Helmut1965]

@sfromis, thanks, you're right I counted wrong :-(. I changed without any result. I'm not sure if my JSON File is really read by Tasmota.
I try to exchange Switch1 to Switch2, unfortunately I don't see any changes.
{"NAME":"MCP23017 A=B1-8, B=B9-16","GPIO":[192,191,193,194,195,196,197,0,198,199,200,201,202,203,204,0]}
I'll test further tomorrow