The intent was to have the SPI and I2C interface pinouts match for the RF100 and RF200. However, a version of Portal (2.4.17) was released where these pins were placed as follows:
SPI:
Physical Pin 17 - MISO
Physical Pin 18 - SCLK
Physical Pin 19 - MOSI
I2C:
Physical Pin 13 - SCLK
Physical Pin 14 - SDA
Future Portal releases will assign the SPI and I2C functionality to match the RF100.
SPI:
Physical Pin 16 - MISO
Physical Pin 15 - SCLK
Physical Pin 14 - MOSI
I2C:
Physical Pin 20 - SCLK (GPIO17)
Physical Pin 19 - SDA (GPIO18)
To fix the problem you can down load a newer version of Portal here:
Docs Link
SPI:
Physical Pin 17 - MISO
Physical Pin 18 - SCLK
Physical Pin 19 - MOSI
I2C:
Physical Pin 13 - SCLK
Physical Pin 14 - SDA
Future Portal releases will assign the SPI and I2C functionality to match the RF100.
SPI:
Physical Pin 16 - MISO
Physical Pin 15 - SCLK
Physical Pin 14 - MOSI
I2C:
Physical Pin 20 - SCLK (GPIO17)
Physical Pin 19 - SDA (GPIO18)
To fix the problem you can down load a newer version of Portal here:
Docs Link