Page 305 - Making PIC Microcontroller Instruments and Controllers
P. 305
SOFTWANE 30?
]:!iil€ni!*iilU Data rossins
CLE]AR
DEFINE OSC 4 define Osc Speed
DIFTNE LCD_DREE PORTD defne the LCD connectrons
DEFINE LCD_DBIT 4 as we always do
DEFINE LCD_RSREG PORTE
DEFINE I,CD.RSBIT O
DEFINE I.CD,ERTG PORTE
DEFINE I,CD_EBIT 1
t olf PoRnE-2
TRISA = %00010000
TRISB = %11110000
fRtSC = %11110000
tRtSD = %00000000
tRIsE = %00000000
ADCONI= %00000111
PAUSE 500 pause .500 second for LCD stdtup
LCDOIt[ SFE, 1. ..Clear" clear LCD, go to fl.s! line
UAIN:
GOSI'3 REA.D_CLOCK
GOSttB RE]A.D_SEIISORS
GOSI'I CONIPROL_FAN
GOSI'B T'PDAIFE_LCD
IF RTCSEC .$00 TaE{ @SltB SE{D DaEA sedd data whed seconds iead 00
GO!t9 MAIII
END
The subroutines called in the preceding code are developed in the following section.
A sho description precedes each oode listing.
SETTII{G IHE INTERNAL CLOCK
There are seven registers of interest in the NJU6355 clock module. They contain the
following pieces oi jnformation:
Month
Date
Day
Hours
Minutes
Seconds
