Sony IR Remote

[Bruce]

One Sony decoder chip comin up..

This should be easy to understand & modify for your PIC type. And you can easily change it to display buttons like channel-up, down, volume-up, down, etc..

DEFINE OSC 4
IR_PULSE VAR BYTE(12) ' IR data received
INDEX VAR BYTE        ' Index pointer
DBYTE VAR BYTE        ' IR data received
 
Main:
   PULSIN PORTC.3,0,IR_PULSE         '// Read-in start pulse
   IF (IR_PULSE < 200) OR (IR_PULSE = 0) THEN Main
 
Verify:                              '// Read, Decode, then verify data
   FOR Index = 0 TO 11               '// Setup to read-in 12 pulses
    PULSIN PORTC.3,0,IR_PULSE[Index] '// Read 12 low-going pulses on RC.3
   NEXT Index                        '// Loop x times
 
   DBYTE = $7F                       '// Start with all 1's and find each 0
 
   FOR Index = 0 TO 6                '// Get 7 "data" bits
    IF IR_PULSE[Index] < 100 THEN DBYTE.0[Index]=0 '// Less than 1mS = 0
   NEXT Index
 
   DBYTE = DBYTE + 1                 '// Button code #1 = 0, Button #2 = 1, so add 1
                                     '// for actual button pressed for display
 
   HSEROUT ["Button pressed was ",#DBYTE,13,10]
   GOTO Main
 
   END

This will print buttons #1 through #9. Buttons 0, channel, volume, etc will output the numeric values corresponding to buttons pressed.

I know you don't care about the device codes like TV, VCR, etc, but it's easier to keep in-synch if you read these in anyway.