Yo soy de la vieja escuela PIC tipo de montaje de la persona, así que mi sugerencia no puede ser aplicable a lo que está haciendo. Pero en general, me documento lo que el puerto pin está haciendo la derecha en el punto en el código donde el pin está definido.
He aquí un ejemplo:
ADC_INIT EQU b'00000100' ; ra0,1,3 = a/d ra2,4,5 = digital
;NOTE: RA3 is a/d so that RA0,1 can be A i/p: watch out for R-M-W accesses!
; PORT A Device Bits note: ra 0,1 a/d inputs so no labels for them
#define _MUXCLK RA,2 ; RA2, a/d ext mux clk out (active LO)
#define _MUXRST RA,3 ; RA3, a/d ext mux reset out (active HI)
#define _PBWR RA,4 ; RA4, "WRITE" button (active LO)
#define _PBRD RA,5 ; RA5, "READ" button (active LO)
RA_INIT EQU b'00010000' ; turn off open drain o/p ra4 (early '71s)
DDR_A EQU b'00110011' ; ddr: ra 2,3==out, ra 0,1,4,5==in
DIPWRMSK EQU b'00010000' ;
DIPRDMSK EQU b'00100000' ;
;WARNING: Output pin MUXRST is configured as a/d input in ADCON1 (the smallest
;possible a/d input configuration) which means that it ALWAYS reads 0 for
;digital i/p. Any port A R-M-W instructions such as bsf, bcf, tstf, xor, ior
;will force MUXRST LO. MUXCLK is also o/p: anytime MUXCLK changes, MUXRST will
;go LO. Reccomend NEVER to use any other pins on port RA as outputs.
; PORT B Device Bits
#define _IPCRXD RB,0 ; RB0, IPC data input (active LO)
#define _IPCTXD RB,1 ; RB1, IPC data out (active HI)
#define _DHTRLD RB,2 ; RB2, display heater LEDs data output
#define _DSTAT RB,3 ; RB3, display status & inputs (bidirectional)
#define _STROBE RB,4 ; RB4, ctrl, DipSw, display strobe, eeprom !CS
#define _SERCLK RB,5 ; RB5, ctrl, DipSw, display CLOCK
#define _EECLK RB,6 ; RB6, eeprom clock
#define _SERDAT RB,7 ; RB7, ctrl, DipSw, eeprom DATA (bidirectional)
RB_INIT EQU b'00000001' ;initial port B data status
DDR_B EQU b'10001001' ;ddr: rb 1,2,4,5,6==out, rb 0,3,7==in
DDR_BLO EQU b'10001001' ;AND 0s force bits LO
DDR_BHI EQU b'00000001' ;OR 1s force bits HI
; PORT C Device Bits
#define _LCD0 RC,0 ; RC0, LCD bit 4 Note: 4 bit mode: present
#define _LCD1 RC,1 ; RC1, LCD bit 5 upper nybble first, strobe,
#define _LCD2 RC,2 ; RC2, LCD bit 6 present lower nybble, strobe
#define _LCD3 RC,3 ; RC3, LCD bit 7
#define _LCDS RC,4 ; RC4, LCD reg select: 0==command 1==data
#define _LCDE RC,5 ; RC5, E clock: normally ==0, pulse 1 to strobe
#define _SRTX RC,6 ; RC6, RS-232 Tx bit
#define _SRRX RC,7 ; RC7, RS-232 Rx Bit
RC_INIT EQU b'00000000' ; initial port C status
DDR_C EQU b'11000000' ; port C ddr: rc0..6==out, rc7==in
;b6==i/p till board layout error fixed or patched
; main board control s/r bits all outputs active HI
;b0=K8 b1=K7 b2=K6 b3=K5 b4=K4 b5=K3 b6=K2 b7=K1
#define _MGAS_M MAINRLY,0 ;24 Vac main gas valve
#define _BLOWR6 MAINRLY,1 ;exhaust blower 6
#define _BLOWR7 MAINRLY,2 ;exhaust blower 7
#define _PRHT2 MAINRLY,3 ;1== preheat ON
#define _PRHT1 MAINRLY,4 ;1== preheat ON
#define _Z1GAS MAINRLY,5 ;1== zone gas ON
#define _Z1SBY MAINRLY,6 ;1== standby mode (0==full heat)
#define _SW24V MAINRLY,7 ;24 Vac Power relay
; expansion board control s/r bits all outputs active HI
;b0=K8 b1=K7 b2=K6 b3=K5 b4=K4 b5=K3 b6=K2 b7=K1
#define _PRHT4 EXPRLY,0 ;1== preheat ON
#define _PRHT3 EXPRLY,1 ;1== preheat ON
#define _Z4SBY EXPRLY,2 ;1== standby mode (0==full heat)
#define _Z4GAS EXPRLY,3 ;1== zone gas ON
#define _Z2GAS EXPRLY,4 ;1== zone gas ON
#define _Z2SBY EXPRLY,5 ;1== standby mode (0==full heat)
#define _Z3GAS EXPRLY,6 ;1== zone gas ON
#define _Z3SBY EXPRLY,7 ;1== standby mode (0==full heat)
;off board relay control bits
;b0=K1 b1=K2 b2=K3 b3=K4 b4,b5=dip sw mux b6=K5 b7=K6
#define _MGAS_O OFBRLY,0 ;110 Vac main gas valve
#define _BLOWR1 OFBRLY,1 ;blower 1
#define _BLOWR2 OFBRLY,2 ;blower 2
#define _BLOWR3 OFBRLY,3 ;blower 3
#define _DSMUXB OFBRLY,4 ;dip sw selector mux ctrl bit B
#define _DSMUXA OFBRLY,5 ;dip sw selector mux ctrl bit A
#define _BLOWR4 OFBRLY,6 ;blower 5
#define _BLOWR5 OFBRLY,7 ;blower 4
;NOTE: background routines write OFBRLY bits 0-3 and ignore OFBRLY bits 4-7.
;Dip sw mux bits are mapped to bit positions 4&5. OFBRLY bits 4&5 are mapped
;into bit positions 6&7. OFBRLY bits 6&7 are ignored and are intended to be
;used as flags for blowers 6&7 (MAINRLY bits 1&2).
;local trinary switch inputs (SW1EVEN, SW1ODD)
Z1MASK EQU b'10000000' ;zone 1 mask
Z2MASK EQU b'01000000' ;zone 2 mask
;Z3MASK EQU b'00100000' ;zone 3 mask
BTHOLD EQU b'00010000' ;batch timer hold: 00=once, 11=always
STRTCAN EQU b'00001000' ;batch timer start - stop switch
UPDN EQU b'00000100' ;batch timer up - down switch
