Enabling MCP3221 - Compile Error...

[sntlewis]

I have run the compile both with Arduino IDE and PlatformIO with MCP3221 Enabled.

The following compile time errors occur on lines 129 and 386 in ioports.c

src\ioports.c: In function 'wait_on_input':
src\ioports.c:129:20: error: 'analog_n_in' undeclared (first use in this function)
else if(port < analog_n_in)
^
src\ioports.c:129:20: note: each undeclared identifier is reported only once for each function it appears in
src\ioports.c: In function 'ioports_init':
src\ioports.c:386:34: error: 'analog_n_in' undeclared (first use in this function)
hal.port.num_analog_in = analog_n_in = 1;

I have found a MCP3221 "daughter card" on Phil-Barrett's github.