diff options
Diffstat (limited to 'test/gputils/compile_error/blinker.asm')
| -rw-r--r-- | test/gputils/compile_error/blinker.asm | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/test/gputils/compile_error/blinker.asm b/test/gputils/compile_error/blinker.asm new file mode 100644 index 0000000..cd9f495 --- /dev/null +++ b/test/gputils/compile_error/blinker.asm @@ -0,0 +1,145 @@ +; list p=16f871 ; list directive to define processor + #include <p16f871.inc> ; processor specific variable definitions + + __CONFIG _CP_OFF & _WDT_OFF & _BODEN_OFF & _PWRTE_ON & _XT_OSC & _WRT_ENABLE_ON & _LVP_OFF & _CPD_OFF + ;__CONFIG _CP_OFF & _WDT_OFF & _PWRTE_ON & _EXTRC_CLKOUT + +;********************************************************************** +M_SAVE_STATE macro + mov wf w_saved + movfw STATUS + movwf status_saved + endm + +M_RESTORE_STATE macro + movfw status_saved + movwf STATUS + swapf w_saved,f + swapf w_saved,w + endm + +BANK0 = 0x0 +BANK1 = 0x80 +BANK2 = 0x100 +BANK3 = 0x180 + +;********************************************************************** +INT_VAR UDATA_SHR +w_saved RES 1 ; variable used for context saving +status_saved RES 1 ; variable used for context saving + +TEMP_VAR UDATA_SHR +count RES 1 +count2 RES 1 +ledA RES 1 +ledC RES 1 +ledB RES 1 + +;********************************************************************** +STARTUP CODE 0x000 ; processor reset vector + nop ; for debugger + movlw high start ; load upper byte of 'start' label + movwf PCLATH ; initialize PCLATH + goto start ; go to beginning of program + +;********************************************************************** +INT_VECTOR CODE 0x004 ; interrupt vector location + goto interrupt + +;********************************************************************** +PROG1 CODE +interrupt + M_SAVE_STATE + M_SAVE_STATE ; try using twice a macro + +; increment duty cycle +; btfss CCP1CON ^ BANK0,4 +; goto duty_cycle_inc_bit0 +; bcf CCP1CON ^ BANK0,4 +; btfss CCP1CON ^ BANK0,5 +; goto duty_cycle_inc_bit1 +; bcf CCP1CON ^ BANK0,5 +; incfsz CCPR1L ^ BANK0,f +; goto update_duty_cycle_done +;duty_cycle_inc_bit0 +; bsf CCP1CON ^ BANK0,4 +; goto update_duty_cycle_done +;duty_cycle_inc_bit1 +; bsf CCP1CON ^ BANK0,5 +;update_duty_cycle_done + +; increment count + decfsz count,1 + goto done + movlw .10 + movwf count + +; blink and output + movfw ledB + xorlw B'00001111' + movwf ledB + movwf PORTB + +done + bcf INTCON,2 ; reset TMR0 interrupt flag + M_RESTORE_STATE + retfie ; return from interrupt + +;********************************************************************** +start +; initialize microchip + clrf TMR0 ^ BANK0 + clrf INTCON ^ BANK0 +; clrf PORTA ^ BANK0 + clrf PORTB ^ BANK0 +; clrf PORTC ^ BANK0 +; clrf PORTD ^ BANK0 +; clrf PORTE ^ BANK0 + banksel TRISA ; bank 1 +; clrf TRISA ^ BANK1 ; all outputs + clrf TRISB ^ BANK1 ; all outputs +; clrf TRISC ^ BANK1 ; all outputs +; clrf TRISD ^ BANK1 ; all outputs +; clrf TRISE ^ BANK1 ; all outputs + movlw B'11010101' ; set prescaler to 64 + movwf OPTION_REG ^ BANK1 ; and start TMR0 (internal source clock) +; movlw B'00000110' ; set PORTA and PORTE to be all digital +; movwf ADCON1 ^ BANK1 + banksel INTCON ; back to bank 0 + bsf INTCON,T0IE ; enable TMR0 interrupt + bsf INTCON,GIE ; enable all interrupts + +; initialize PWM +; CLRF CCP1CON ^ BANK0 ; disable CCP module +; CLRF TMR2 ^ BANK0 ; clear Timer2 (also set the pre-scaler to 1) +; MOVLW .1 +; MOVWF CCPR1L ^ BANK0 ; set duty cycle = (CCPR1L+1)/(PR2+1) [25% for (31+1)/(127+1)] +; banksel PR2 ; select bank 1 +; MOVLW .255 +; MOVWF PR2 ^ BANK1 ; set period = Fosc/4/pre-scaler/(PR2+1) +; BCF TRISC ^ BANK1,2 ; set CCP1 pin as output +; banksel PIR1 ; back to bank 0 +; MOVLW B'001100' +; MOVWF CCP1CON ^ BANK0 ; set PWM mode (the 2 LSBs of the duty cycle are set to '00') +; BSF T2CON ^ BANK0,TMR2ON ; Timer2 starts to increment + + ; The CCP1 interrupt is disabled, + ; do polling on the TMR2 Interrupt flag bit +;PWM_Period_Match +; BTFSS PIR1, TMR2IF +; GOTO PWM_Period_Match + + ; Update this PWM period and the following PWM Duty cycle +; BCF PIR1, TMR2IF + +; initialize variables + movlw B00000101' + movwf ledB + movlw .10 + movwf count + +; loop forever + goto $ + +;********************************************************************** + END
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