I’m currently having some issues while talking to an MCP7940N (RTC) using Boron, where my SDA bus hangs at low. The bus is currently using 4.7k pull-up resistors.
What I noticed while debugging using a scope is that while my Boron is trying to connect to the cloud, I can perceive some data noise/data going on the I2C bus.
So my question is, is that noise from the GSM modem bus, or is this I2C bus shared with other onboard I2C stuff on the Boron? If it’s shared, there a table/list with all the addresses on the bus? If it’s not, how problematic is this noise on my bus?