ADC2 Click example - what's SDI_bit?

[Rubbotron]

I'm working in mikroBasic Pro for dsPIC and I'm trying to use the ADC2 Click example. I cannot seem to find where the label SDI_bit comes from or where it is declared. I've searched through keywords and tokens but didn't find it. Here is the only place that it is found in the code:

while(SDI_bit) ' Conversion time: 75ms

ChipSelect = 1
Delay_us(1)
ChipSelect = 0
Inc(timer)
Delay_ms(10) ' polling SDI_bit on every 10ms

if (timer >= 20) then ' failsafe timer
result = -4 000000 ' no response from MCP3551;
end if
wend

[Rubbotron]

For additional clarification, I've attached a copy of the code.

[nadir.celebic]

Hi,

Please follow these steps:
Right click on SDI_bit => Find Declaration (Ctrl+D)

' Alternative bit function
const SDI = 4 register
dim SDI_bit as sbit at PORTC.B4

Best Regards,
Nadir

[Rubbotron]

Thank you so much. I see it now. I am guessing that once the SPI port is initialized and defined using the SPI Library commands, the library sub procedures declare these variables, which is transparent to the programmer. Great tip! Who knows how long it would have taken me to locate that Find Declaration command. Thanks again!