Change MT6701 I2C slave address

[Janschnmnn]

Hey guys,
I am trying to assign a different address to my MT6701 magnetic encoder. I saw that there is a function in your repo BasePeripherals which is set_address and it is tied to the requirement of an I2C bus. Can I simply hook up my encoder to my ESP32 and set the new address this way? Or am I completely off? I am just doing this as a hobby, so please excuse my lack of expertise. Thanks!

[finger563]

Hey @Janschnmnn you can use the Mt6701::Config's .device_address member which is passed into the Mt6701 constructor to provide an alternative address for your hardware configuration if you're using it in I2C mode.

That being said, what you've found (the set_address(...) member of the base class) does also work, though if you use that case, then ensure you set auto_init = false in the Config and call set_address after you make the encoder object but before you manually call initialize.

Either of those options should work just fine for you, please feel free to reach back out here or via the espp discord if you have any issues or questions :)

[finger563]

• Config struct documentation: https://esp-cpp.github.io/espp/encoder/mt6701.html#_CPPv4N4espp6Mt67016ConfigE
• constructor member documentation: https://esp-cpp.github.io/espp/encoder/mt6701.html#_CPPv4N4espp6Mt67016Mt6701ERK6Config
• initialize member documentation: https://esp-cpp.github.io/espp/encoder/mt6701.html#_CPPv4N4espp6Mt670110initializeEbRNSt10error_codeE

[finger563]

Example code:

• in docs: https://esp-cpp.github.io/espp/encoder/mt6701.html#classespp_1_1Mt6701_1mt6701_ex1
• as code: https://github.com/esp-cpp/espp/blob/main/components/mt6701/example/main/mt6701_example.cpp