I'm trying to run the HelloChirp application from a generic SAMG55 Xplained Pro developer kit in order to communicate with a CH-101 sensor connected to the SparkFun breakout board. The HelloChirp application can be compiled and flashed to the board from Atmel studio 7 just fine, but unfortunately I'm having trouble communicating with the sensor itself. No matter which configuration I've tried, the program always fails to find the sensor.
I currently have it connected to the pin callouts indicated in the sensor 3 configuration inside the default board config header file. RST is wired to PA15 (EXT3 pin 10 on the breakout board), INT is wired to PA29 (EXT1 pin 10), and PROG is wired to PA31 (EXT4 pin 5). I've wired the I2C connection to PB10 and PB11 (EXT1 pin 10 and 11), which are called out as TWI pins on the SAMG55's online schematics.
I figured that since this evaluation kit uses the same ATSAMG55J19 board found on the official CH-101 evaluation kit, I could simply connect the sensor's communication pins to the same ones called out in the HelloChirp application and be able to run the example code. Am I wiring this wrong, or is there some additional piece of hardware I'm missing that the evaluation kit uses to interface between the sensors and the ATSAMG55J19 chip?