Requests for the FW:
Add characteristic to access general GPIO pins in analog and digital form.
- extension of the existing MOS_1-4 access, PIN read/write under the UI Service (m_ui.c) Add service/characteristic for TWI access.
- expose nrf_drv_twi_init, nrf_drv_twi_tx, nrf_drv_twi_rx for general purpose I2C similar to what is done for mpc4725, with user enterable I2C addresses (mcp4725.c) Document the Battery Service to monitor the battery voltage.
Would permit using Thingy:52 as a powerful slave to iOS app. I2C driver code could be external to the Thingy:52.