Post by thread:Setting bits with MC C18

Hi I am trying to do a very simple thing but I can't see the probably obvious way of doing it, I am new to C18 so this may be an easy question. I have a 4 bit binary output I need to send to a keyboard decoding chip, the pins are not all on one port so I am doing the following: unsigned char KeyboardCont; near union { struct { unsigned Bit0:1; unsigned Bit1:1; unsigned Bit2:1; unsigned Bit3:1; unsigned NotUsed4:1; unsigned NotUsed5:1; unsigned NotUsed6:1; unsigned NotUsed7:1; }; }; KeyboardCont is the register that I use to count through the 16 combinations as such: //---------------------------------------------------------------- void ScanKeyboard(void) //step thru the kb and read { unsigned int i; for (i=0; i<16; i++) { KeyboardCont = i; OutputKeyboard(); } } So far so good, Next I want to actually update the respective ports to reflect the count like so: //---------------------------------------------------------------- void OutputKeyboard(void) { LATE.LATE0 = KeyboardCont[0]; LATE.LATE1 = KeyboardCont[1]; LATE.LATE2 = KeyboardCont[2]; LATA.LATA5 = KeyboardCont[3]; } Notice the different ports. This is the bit that wont work, I get the following errors: C:\Data\PIC\PIC_C\Modbus1\main.c:432:Error [1151] struct or union object designator expected C:\Data\PIC\PIC_C\Modbus1\main.c:432:Error [1129] [] operator requires a pointer and an integer as operands C:\Data\PIC\PIC_C\Modbus1\main.c:433:Error [1151] struct or union object designator expected C:\Data\PIC\PIC_C\Modbus1\main.c:433:Error [1129] [] operator requires a pointer and an integer as operands C:\Data\PIC\PIC_C\Modbus1\main.c:434:Error [1151] struct or union object designator expected C:\Data\PIC\PIC_C\Modbus1\main.c:434:Error [1129] [] operator requires a pointer and an integer as operands C:\Data\PIC\PIC_C\Modbus1\main.c:435:Error [1151] struct or union object designator expected C:\Data\PIC\PIC_C\Modbus1\main.c:435:Error [1129] [] operator requires a pointer and an integer as operands If I try to LATE.LATE0 = 1; I also get an error, I understand that 1 is not a bit but how do you set a bit? I have spent a lot of time looking and I expect the answer is so easy that its not documented :) Is it possible to define the KeyboardCont as the pins directly so that I don't need a working register? thanks for reading Lee McLaren