ACSim and ADCON1 declaration?

MIOS programming (C)
1

Hi all,

after getting Code::Blocks to work properly with ACSim I ran into the next problem.

I’m using Port A to interface to some SRAM memory, so I need to disable the ADC and set up the port properly. This is the init function I use:

void SRAM_Init(void) __wparam
{
	// disable the ADC which allocates the analog pins
	// only needed if controls pins are connected to port A
	ADCON1 = 0x07;

	// put PortA in output mode
	TRISAbits.TRISA0 = 0;
	TRISAbits.TRISA1 = 0;
	TRISAbits.TRISA2 = 0;
	TRISAbits.TRISA3 = 0;
	TRISAbits.TRISA5 = 0;

	// set control lines
	PORTAbits.RA5 = 1;
	PORTAbits.RA3 = 1;
	PORTAbits.RA2 = 1;
	PORTAbits.RA0 = 0;
	PORTAbits.RA1 = 0;

	// configure RD4 as input for reading SRAM card status
	TRISDbits.TRISD4 = 1;

	return;
}

The code compiles fine for the RELEASE target. For the DEBUG target it gives me

error: 'ADCON1' undeclared (first use in this function)

and naturally the same for TRISAbits, PORTAbits, etc.

I suspect that this is related to something that ACSim would need to know about but does not yet? How would I add this information to make the code compile in DEBUG mode?

Best regards, ilmenator

2

Hi,

these special parts aren’t yet defined in ACSim, I concentrated on the basic MIOS functions, but you can add them manually; there are already some PORTCbits and PORTDbits, so you’ll know where to paste it:

please add this to ACSim_mios.h:

// "pic18f452.h" typedefs
typedef union {
	struct {
		unsigned PCFG0:1;
		unsigned PCFG1:1;
		unsigned PCFG2:1;
		unsigned PCFG3:1;
		unsigned :1;
		unsigned :1;
		unsigned ADCS2:1;
		unsigned ADFM:1;
	};
} __ADCON1bits_t;

typedef union {
	struct {
		unsigned TRISA0:1;
		unsigned TRISA1:1;
		unsigned TRISA2:1;
		unsigned TRISA3:1;
		unsigned TRISA4:1;
		unsigned TRISA5:1;
		unsigned TRISA6:1;
		unsigned :1;
	};
} __TRISAbits_t;

typedef union {
	struct {
		unsigned RA0:1;
		unsigned RA1:1;
		unsigned RA2:1;
		unsigned RA3:1;
		unsigned RA4:1;
		unsigned RA5:1;
		unsigned RA6:1;
		unsigned :1;
	};
	struct {
		unsigned AN0:1;
		unsigned AN1:1;
		unsigned AN2:1;
		unsigned AN3:1;
		unsigned :1;
		unsigned AN4:1;
		unsigned OSC2:1;
		unsigned :1;
	};
	struct {
		unsigned :1;
		unsigned :1;
		unsigned VREFM:1;
		unsigned VREFP:1;
		unsigned T0CKI:1;
		unsigned SS:1;
		unsigned CLK0:1;
		unsigned :1;
	};
	struct {
		unsigned :1;
		unsigned :1;
		unsigned :1;
		unsigned :1;
		unsigned :1;
		unsigned LVDIN:1;
		unsigned :1;
		unsigned :1;
	};
} __PORTAbits_t;

and this to ACSim_mios.c:

// "pic18f452.h" 
__ADCON1bits_t ADCON1bits;
__TRISAbits_t TRISAbits;
__PORTAbits_t PORTAbits;

basically, the typedefs are just copied from pic18f452.h and pasted to ACSim_mios.h. And a variable in ACSim_mios.c is instantiated.

I know this is probably a bit messy, but all this pic18fxxx.h/.c stuff needs a clean up anyway, so in order to get it running… :-\

Best,

Michael