28139 Parallax Inc, 28139 Datasheet - Page 208
28139
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
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Page 198 · IR Remote for the Boe-Bot
The reason the way the code is written makes such a big difference in IR remote
transmission is because the calculations are performed between
commands.
PULSOUT
The
loop shown above, which takes more than a millisecond, throws the
FOR...NEXT
timing off so much, that this text's example programs can no longer decode the messages.
On the other hand, the calculation
takes about 500 µs,
remoteCode.BITX * 300 + 300
which is really close to the 600 µs rests between pulses shown in Figure 1-4 on page 6. It
works, both with the Boe-Bot and SONY TVs.
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