9 hours ago
(Yesterday, 11:14 AM)admin Wrote: can you try exchange pin define of SDA and SCL?
Tried that, also to physically change the wires. Tried on GPIO07&40 as well, 47&40. No luck. Also tried 013&14. Tried with lower frequency, cut the wire shorter to reduce resistance.
[22:20:29.328][C][i2c.idf:092]: I2C Bus: [22:20:29.328][C][i2c.idf:093]: SDA Pin: GPIO13 [22:20:29.328][C][i2c.idf:093]: SCL Pin: GPIO14 [22:20:29.328][C][i2c.idf:093]: Frequency: 10000 Hz [22:20:29.333][C][i2c.idf:106]: Recovery: failed, SCL is held low on the bus [22:20:29.333][C][i2c.idf:113]: Results from bus scan: [22:20:29.333][C][i2c.idf:115]: Found no devices
I think I will give up at this point and order another RS485 version.