Flowcode Support Board

Posted: **Thu Nov 11, 2021 10:36 pm**

In Flowcode 9, some of the processor configuraton can be set in the Project Options/Configure menu (Oscillator, Watchdog, etc.) I see this creates two entries in the C code, e.g.

//Chip Configuration Settings
__PROG_CONFIG(0x1, 0x7DC);
__PROG_CONFIG(0x2, 0x1633);

I want to configure the ODCONC register of my 16F1786, which controls outputs in the C register to be open drain, specifically registers 0,1,2,3 and 7.

I would like advice on how to add a "C Code" insert into my Flow Code to accomplish this. The data sheet indicates this register is in Bank 5, 28Eh.

Thank you!

Posted: **Fri Nov 12, 2021 8:40 am**

Hi, ddllc
Welcome to the Flowcode forums.
Perhaps the safest way to set bits of a register within a C code block:

Code: Select all

ODCONC |= 0b100000;

To clear bits:

Code: Select all

ODCONC = ODCONC & (~0b100000);

Doing it that way you won't interfere with the other bits that may already be set or cleared.
You don't have to use binary, I just find it conveient.
For example:

Code: Select all

ODCONC |= 0x5; //hex

Code: Select all

ODCONC |= 5; //decimal

etc
// is just to make a comment if not familure with C code.

Posted: **Fri Nov 12, 2021 6:20 pm**

Seems easy. Thank you! I'll give it a go.

Posted: **Sat Nov 13, 2021 2:53 pm**

nps I was going going to state you can could also set or clear indiviaul bits with:

Code: Select all

set_bit(ODCONC,ODC5);
st_bit(ODCONC,ODC5);
clear_bit(ODCONC,ODC5);
cr_bit(ODCONC,ODC5);

or

Code: Select all

set_bit(ODCONC,5);
st_bit(ODCONC,5);
clear_bit(ODCONC,5);
cr_bit(ODCONC,5);

However, as Microchip has not defined the ODCONC register for 16F1786 then you can't use that method.
It's something to remember for other target devices.

Flowcode Support Board

PIC 16F Chip Configuration

PIC 16F Chip Configuration

Re: PIC 16F Chip Configuration

Re: PIC 16F Chip Configuration

Re: PIC 16F Chip Configuration