I’m completely new to these boards and have been really struggling to get started as most of the examples I find are using Arduino boards, and I am using a BLE Nano V2, though I am programming in Arduino.
The first issue is that I need to be able to see serial data from the BLE Nano while it’s in my circuit. Stacking it on the DAPLink doesn’t really do any good, since I have to take it out of the circuit, unless I’d wire out from the breadboard to the headers on it remotely. So I picked up a Sparkfun FDI basic 3.3V board to use so I can interface with it. I installed the FTDI drivers, and hooked it up how I thought it should be, since I have found no literature on hooking this up to the Nano. I hooked up as follows: FTDI-BLE such that GRN - RTS, CTS - P0_28, TXO - P0_29, RXI - P0_30, 3V3 - 3.3V, GND - GND.
Set up this way, if I open the serial monitorin Arduino, I see what I wrote the program to print, so it’s working. However, I can’t upload a sketch to the Nano, which I thought I’d be able to do. It says “the selected port does not exist or your board is not connected” I’m not sure what the problem is. If I have to pull the Nano out of the circuit and put it in the DAPLink every time, I might as well remotely wire to the DAPLink, I know it’ll work that way. What’s the issue with the FTDI?
Also, I’m trying to get data from an MPU9250 breakout board. From what I understand, I need to use i2c. I’m totally lost on how to set this up, both in hardware, and in software. Again, the examples I find aren’t doing this with an a BLE Nano V2, they’re using Arduino Pro Minis or something similar. What pins do I need to use on the BLE Nano to hook up to the SCL and SDA pins on the MPU9250?