diff options
Diffstat (limited to 'software/ihu')
| -rw-r--r-- | software/ihu/ihu.asm | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/software/ihu/ihu.asm b/software/ihu/ihu.asm index 3cde059..e080b7c 100644 --- a/software/ihu/ihu.asm +++ b/software/ihu/ihu.asm @@ -33,14 +33,27 @@ LIST p=16F887 include "p16f887.inc" ;; TODO: set correct configuration bits - __config _FCMEN_OFF & _IESO_OFF & _CPD_OFF & _CP_OFF & _MCLRE_OFF & _PWRTE_OFF & _WDT_OFF & _INTRC_OSC_NOCLKOUT + __config _DEBUG_OFF & _LVP_OFF & _FCMEN_OFF & _IESO_OFF & _BOR_OFF & _CPD_OFF & _CP_OFF & _MCLRE_OFF & _PWRTE_OFF & _WDT_OFF & _XT_OSC + ;; ------------------------------------- ;; DEFINES - ;; TODO: find right address for context save registers + ;; constants + + ;; I/O Pins +LED EQU 5 + + ;; variables + ;; page 0 only +CNT0 EQU H'0020' +CNT1 EQU H'0021' + + ;; all pages W_TEMP EQU H'007E' STATUS_TEMP EQU H'007F' + ;; bits + ;; ------------------------------------- ;; Reset Vector org 0 @@ -54,6 +67,9 @@ STATUS_TEMP EQU H'007F' swapf STATUS,W movwf STATUS_TEMP + bcf STATUS,RP0 + bcf STATUS,RP1 + ;; TODO: implement interrupt service routines interrupt_end @@ -67,8 +83,23 @@ interrupt_end ;; ------------------------------------- ;; INIT init - ;; bank 1 - ;; TODO: do init stuff + ;; bank 1 + bsf STATUS,RP0 + bcf STATUS,RP1 + + movlw b'11000111' + movwf OPTION_REG + clrf PSTRCON + movlw b'00010000' + movwf OSCCON + movlw b'11011111' + movwf TRISD + bcf STATUS,RP0 + + ;; bank 0 + bsf PORTD,LED + clrf TMR0 + goto main ;; ------------------------------------- @@ -84,11 +115,18 @@ init ;; ------------------------------------- ;; MAINLOOP main + bcf INTCON,T0IF +loop + btfss INTCON,T0IF + goto loop - ;; TODO: add main code + movlw b'00100000' + xorwf PORTD,f + goto main powerdown sleep + nop goto main ;; ------------------------------------- |