Matrix user forums

hi, i tryed to implement an assembly code in my flowcode programm, but just "movlw" is working
if i try "movwf", "andwf" or "btfss" flowcode creates an error...
What do i do wrong?
(i use flowcode student version)

Hello

Please could you post the piece of code you are using and the error message associated with it.

You should be able to use assembler statements like this

asm{

commands

}

Also isnt movwf actually movf, I think the same goes for the andwf which is actually andf.

Im not great on assembler so I could be wrong.

with my assembler programm, i whould use the LVD (Low Voltage Detect) Funktion
in MPLAB, it works, but when i try to use the same code in flowcode it does not work... here is my assembler code i try to use (this code works in MPLAP):

//with these lines, i initialise the LVD trip point
MOVLW 0x1B ; Enable LVD, Trip point = 3,4V
MOVWF LVDCON ;
//now i check the interrupt flag
LVD_STABLE:
BTFSS LVDCON, IRVST ; Has LVD circuitry stabilized? if there is no interruptflag is set, stay in loop, else ignore the following command (GOTO LVD_STABLE)
GOTO LVD_STABLE ; NO, Wait longer

//Interrupt flag is set
BCF PIR2, LVDIF ; YES, clear LVD interrupt flag
BSF PIE2, LVDIE ; Enable LVD interrupt
BSF STATUS,5 ;Go to Bank 1
MOVLW 00h ;Put 00000 into W
MOVWF TRISA ;Move 00000 onto TRISA – all pins set to output
BCF STATUS,5 ;Come back to Bank 0

//the interrupt flag is set, and now i put out "1" on RA0
CLRF PORTA
CLRF LATA
MOVLW 0x7F
MOVWF ADCON1
MOVLW 0xFE
ANDWF TRISA, W
MOVWF TRISA
MOVLW 0xFE
ANDWF PORTA, W
MOVWF CompTempVar605
MOVLW 0x01
IORWF CompTempVar605, W
MOVWF PORTA
END


here is the same code, modified for Flowcode, where no command works and creates errors:

asm
{
MOVLW 0x1B ; Enable LVD, Trip point = 3,4V
MOVWF gbl_lvdcon ;
//now i check the interrupt flag
LVD_STABLE:
BTFSS gbl_lvdcon, IRVST ; Has LVD circuitry stabilized? if there is no interruptflag is set, stay in loop, else ignore the following command (GOTO LVD_STABLE)
GOTO LVD_STABLE ; NO, Wait longer

//Interrupt flag is set
BCF gbl_pir2, LVDIF ; YES, clear LVD interrupt flag
BSF gbl_pie2, LVDIE ; Enable LVD interrupt
BSF STATUS,5 ;Go to Bank 1
MOVLW 00h ;Put 00000 into W
MOVWF gbl_trisa ;Move 00000 onto TRISA – all pins set to output
BCF STATUS,5 ;Come back to Bank 0

//the interrupt flag is set, and now i put out "1" on RA0
CLRF gbl_porta
CLRF gbl_lata
MOVLW 0x7F
MOVWF gbl_adcon1
MOVLW 0xFE
ANDWF gbl_trisa, W
MOVWF gbl_trisa
MOVLW 0xFE
ANDWF gbl_porta, W
MOVWF CompTempVar605
MOVLW 0x01
IORWF CompTempVar605, W
MOVWF gbl_porta
END
}

Hello

Please could you tell me which PICmicro you are using that has the LVDCON register.

PIC18F1320

Hello

The code is now compiling corrently. Please refer to the BoostC manual located in the Flowcode V3/BoostC folder for further help with porting code to BoostC.

juhuuu
now it works!

very big thanks!!!