How does Flowcode handle PIC SFR's in a branch or decision?

[TimN-MK]

E.g. I want to branch on a Comparator change, CM1CON0 but Flowcode will call it FCV_CM1CON0
- how does this get translated, do I have to create my own memory map tables? E.g 990h FCV_CM1CON0

[BenR]

Hello,

You can read a register into a flowcode variable like this. Lets say the variable is called reg, the C code woulld look like this.

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FCV_REG = CM1CON0;

[TimN-MK]

Hi Ben,
That seems a bit messy, adding extra line before what sould be a simple "if" or "do while" statement?

[Steve-Matrix]

If you are not concerned with simulation, then there is an approach that is not 'messy'. You could add a decision icon and then simply customise the C code generated by it by right-clicking the icon and selecting the appropriate menu item. For example, you could change it to:

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if (CM1CON0 & 0x02)
{

Flowcode does not simulate all peripheral registers and so you if you wanted to also simulate your project before downloading to the target, you would need to do a bit more work.

For example, create a variable to hold the register value and then use this in your decision icons. You can manipulate the value of this register variable using simulation-only functionality (e.g. create a property and read the value of it using the "GetValue" Built-in Function), but also add C code to set the value when running on the target. The attached is a very basic example.

[TimN-MK]

Steve, thanks for the extra detail on this.
Will addressing the union bitfield definitions in the pic16F18854.h also work in Flowcode?
eg:
if (CMOUTbits.MC1OUT) // Comparator out TRUE
or
if (!CMOUTbits.MC1OUT) // Comparator out FALSE

[Steve-Matrix]

That will work in a C code icon or if you customise the C code in a decision icon.