Inserts in C do not work.

[carworker]

Hi !
Before buying I want to check how inserts in C work. PIC16F18887. I create an interrupt to use the capture tool and a macro. As a result, the compiler reports errors - test_18877_c_code.c:97:1: error: (192) undefined identifier "ccpr1h" test_18877_c_code.c:98:1: error: (192) undefined identifier "ccpr1l" and further when accessing registers.
FC 5 it worked. FC 10 what am I doing wrong? Or how to make inserts in C work

[mnfisher]

Try in caps so CCPR1H.

Note that you can also access parts of the register using

REGNAMEbits.FIELD = 0b10 where REGNAME is the register (OSCCON for example ) and field is the named subsection.

Is that doesn't work please post your code for us to take a look at.

Martin

[carworker]

I don't write in C. I use what is freely available. This was tested on FC5. Changing to capital letters didn't help. I'll try to check your version. Thank you.
Costom interupt properties
Enable Code:
ccpr1h=0;
ccpr1l=0;
ccp1con=0x05;

Handler Code:
if (ts_bit(pir1, CCP1IF))
{
FCM_%n();
cr_bit(pir1, CCP1IF);
}

Macro
FCV_IMP=ccpr1l | ccpr1h<<8;
if (ccp1con&1)
{
FCV_IMPFULL = FCV_IMP - FCV_IMPRIS;//no
FCV_IMPRIS=FCV_IMP;//yes
ccp1con.0=~ccp1con.0;

[mnfisher]

CCPR1H=0;
CCPR1L=0;
CCP1CON=0x05;

Compiles AOK

Please post your code as an attachment (just a snippet that enables the interrupt handler and it's 'macro') - not sure what you mean by Macro - and how this is laid out.

Martin

[carworker]

test_18877_c_code.c:98:8: error: (195) expression syntax
test_18877_c_code.c:127:1: error: (192) undefined identifier "CCP1H"
test_18877_c_code.c:128:1: error: (192) undefined identifier "CCP1L"
test_18877_c_code.c:154:1: error: (192) undefined identifier "FCM_"
(908) exit status = 1
It doesn't work for me. It's impossible to check in general. Maybe Matrix will do capture and comparison and embed it into the FC10 body? Useful tool

macro.png (196.05 KiB) Viewed 4882 times

[mnfisher]

There are several issues stopping this compiling.

The registers in enable are incorrect

CCP1H=0;
CCP1L=0;

Should be CCPR1H and CCPR1L (as per initial query)

Also you have FCM_%N -> which should be FCM_%n (lower case 'n')

Unfortunately Flowcode doesn't have TS / ST/ CR _Bit

So for example

IF(TS_BIT(PIR1,CCP1IF)); (Note the ';' at the end is incorrect and IF should be lower case)

Would be

if(PIR1 & (1 << CCP11F))

However CCP11F doesn't seem to be a field of the PIR1 register and so this should probably be

Code: Select all

if(PIR2 & (1 << C1IF)) {
   FCM_%n();
   PIR2bits.C1IF = 0;   // Clear interrupt flag
}

See https://www.flowcode.co.uk/wiki/index.p ... -_PICmicro for details of custom interrupts...

There are similar issues with

ST_BIT(INTCON,PEIE);
ST_BIT(PIE1,CCP1IE);//capture

Would be:

INTCONbits.PEIE = 1;
PIE1bits.CCP1IE = 1; // There is an issue with register names / field names here

See the data sheet at https://ww1.microchip.com/downloads/aem ... 01825F.pdf

Martin

[carworker]

Thank you for the lesson. I have made corrections. If I understood everything correctly, it looks like this

err.png (166.03 KiB) Viewed 4781 times

Real project on chip 16F913. Checked on FC8. There the compiler swears only on this ccp1con.0=~ccp1con.0; or CCP1CON.0=~CCP1CON.0
//syntax err

[mnfisher]

Possibly use:

CCP1CONbits.CCP1M0

Or just CCP1CON &= -1; if you just want to clear bit 0 of the register.

Note this is better as:

CCP1CON &= - (1 << CCP1M0) ;

Saves a trip to the datasheet to see what is being changed...

Martin

[carworker]

Thank you. Just wonderful! Another error gone. Now we just have to defeat this one;
TRISA=0;
PORTA=0;
T1CON=0x01
INTCONbits.PEIE=1;
PIE1bits.CCP1IE=1;
Compiler err
143: TRISA=0;
^ (195) expression syntax
146: INTCONbits.PEIE=1;
^ (195) expression syntax
(908) exit status = 1
(908) exit status = 1
I noticed that such insertions in C change the main code created by the standard method Flowcode . {} ; are moved

[mnfisher]

Missing semicolon after T1CON = 0x01

Note the 'bits' refers to bitfields not individual bits.

So

REGISTERbits.FIELD = 0b110;

Will set 3 bits (assuming FIELD is 3 bits wide)

Martin