The Gen 2 board has the following limitations in libmraa:
-- i2c is set at 400Khz speed cannot be changed without reloading kernel module
-- i2c bus is shared with multiple devices, scanning it usually fails
+- i2c is set at 400Khz speed cannot be changed without reloading kernel module,
+ the driver is intel_qrk_gip_i2c and the parameter is i2c_std_mode which must
+ be set to 1 in order to set the i2c bus speed to 100Khz
+- i2c bus is shared with multiple devices in kernel space, scanning it usually
+ fails
- pwm period is set globally for all pwm channels, when changed this will halt
all pwm channels
+- adc kernel module will return 12bit number but the ADC itself only has an
+ accuracy of 10bits.
+- AIO pins are treated as 0-5 in mraa_aio_init() but as 14-19 for everything
+ else. Therefore use mraa_gpio_init(14) to use A0 as a Gpio