I am seeing a very strange thing in this very simple code (PBP v 2.6C) when I try to run it on my EASYPIC6. The EASYPIC6 has built in LEDs for every Port output. I have two that are blinking on PortB but the one that is coded the very same way on PortC will not blink. Can anyone tell me why?
I also don't understand why the FineLine Editor automatically bolds the PORTC alias but not the PORTB aliases??
Code:'< FL_PIC18F4550 >' ' First valid PIC found within the first 200 lines will ' highlight AND set device. '*********************************************************************** '* Name : BLINKY_EASYPIC6.pbp * '* Author : John R. Ellis * '* Notes : 1) This code was designed/devloped on an EasyPic6 * '* Compiler: PICBASIC PRO Compiler 2.60C from microEngineering Labs * '* Device : 18F4550 * '* Memory : 188 bytes of Program Memory required. * '*********************************************************************** ' -----------------------[ Program Description ]------------------------ ' PICBASIC PRO program to blink LED on EASYPIC6 * ''**********************************************************************'-----------------18F2550/4550 Port/PIN Connections ]------------------- 'I/O pin connections to the 18F4550 MCU are as follows: 'PORTC.4 (15) connected as RED_LED 'PORTC.5 (16) connected as GRN_LED 'INCLUDE "CodeSize.pbp" 'FOR TEST ONLY DEFINE Measure 1 ;@ StartSize(LOOKUP) 'FOR TEST ONLY INCLUDE "18F2550_4550_CONFIGS.pbp" ' Setup CONFIGS for MCU '--------------[ Define Hardware / Set Registers ]------------------------ DEFINE OSC 16 ' Using 8 MHz crystal Include "Modedefs.Bas" ' Mode definitions for Debug,Serin/out, ' Shiftin/out, Xin/out. INCLUDE "ALLDIGITAL.pbp" ' Sets all registers for digital ops. ' User must make sure AllDigital.pbp file ' is in same or higher directory location as ' this source code before compiling. 'DEFINE SHOWDIGITAL 1 ' When uncommented will show analog settings ' in Assembler Results window. TRISA = 0 ' PortA reserved as output connections to LCD interface TRISB = %00001100 ' RB2 & RB3 reserved as RTC Alarm1 & Alarm2 inputs ' PORTB.2 is also an input from switch grounding ' PortB.4 is used for LED_RED ' PortB.5 is used for tthe GRN_LED TRISC = 0 ' PortC is all Outputs CLEAR '--- Variables ----------------------------------------------------------- LED_RED VAR PORTB.4 ' Red LED LED_GRN VAR PORTB.5 ' Green LED used to indicate Routine entries LED_EASYPIC VAR PortC.5 'Setup for starting Main Program 'Initialize LEDs to off LOW LED_GRN LOW LED_RED LOW LED_EASYPIC '--------------------[ Begin Main Program Loop ]------------------------- ;@ StartSize(MainLoop) ; FOR TEST ONLY mainloop: ' Blink LEDs PAUSE 5000 HIGH LED_GRN HIGH LED_RED HIGH LED_EASYPIC PAUSE 1000 LOW LED_GRN LOW LED_RED LOW LED_EASYPIC WRITE 255,9 'Write to EEPROM as Test if executing to this location GOTO mainloop ;@ EndSize(MainLoop) ; Uncomment FOR TEST ONLY End ' Safety measure to insure program stops if reaches here
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