28139 Parallax Inc, 28139 Datasheet - Page 136

• Manufacturer Part Number: 28139
• Description: KIT REMOTE IR FOR BOE-BOT W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28139

• Accessory Type: IR Remote
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Boe-Bot®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

' SONY TV IR remote subroutine loads the remote code into the
' remoteCode variable.
Get_Ir_Remote_Code:
' -----[ Subroutine - Get IR Distances ]-----------------------------------
Get_Ir_Distances:
remoteCode = 0
' Wait for resting state between messages to end.
DO
LOOP UNTIL irPulse > 1000
' Measure start pulse.
RCTIME 9, 0, irPulse
IF irPulse > 1125 OR irPulse < 675 THEN GOTO Get_Ir_Remote_Code
' Get data bit pulses.
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT0 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT1 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT2 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT3 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT4 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT5 = 1
RCTIME IrDet, 0, irPulse
IF irPulse > 300 THEN remoteCode.BIT6 = 1
' Adjust remoteCode so that keypad keys correspond to the value
' it stores.
IF (remoteCode < 10) THEN remoteCode = remoteCode + 1
IF (remoteCode = 10) THEN remoteCode = 0
RETURN
distanceLeft = 0
distanceRight = 0
FOR freqSelect = 0 TO 4
RCTIME IrDet, 1, irPulse
LOOKUP freqSelect,[37500,38250,39500,40500,41500], irFrequency
If out of range, then retry at Get_Ir_Remote_Code.
' Clear all bits in remoteCode
' Measure pulse
' Set (or leave clear) bit-0
' Measure next pulse
' Set (or leave clear) bit-1
' etc