28139 Parallax Inc, 28139 Datasheet - Page 69

• 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

Your Turn – Correcting the Keypad Values
The rules for how numeric values correspond to keys on the keypad can be a little
confusing. When
the key pressed is really 2 , and so on up until
was pressed. But wait, when
You can fix this problem with a couple of
statements can adjust the value stored in the
key value on the keypad. In other words, when you press 5 ,
you press 8 ,
stores 0.
√
√
√
√
√
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT1 = 1
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT2 = 1
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT3 = 1
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT4 = 1
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT5 = 1
RCTIME 9, 0, time
IF time > 300 THEN remoteCode.BIT6 = 1
Save PulsesToByteValue.bs2 as PulsesToByteValueYourTurn.bs2.
Modify the program by inserting these two commands between the last
IF...THEN
IF (remoteCode < 10) THEN remoteCode = remoteCode + 1
IF (remoteCode = 10) THEN remoteCode = 0
Run the program and verify that the value stored by
the number of the key pressed on the IR remote's keypad.
Write a brief report explaining how these two commands get the job done.
Update Table 2-1 below, and mark this page for reference on how the numeric
values correspond to the keys pressed on the keypad.
remoteCode
remoteCode
statement and the
stores 8. More importantly, when you press 0 ,
remoteCode
is 0, the key pressed is really 1 . When
DEBUG
stores 9, it means the 0 key is pressed!
remoteCode
command.
remoteCode
IF…THEN
' Measure next pulse
' Set (or leave clear) bit-1
' etc.
variable so that it matches the
statements.
remoteCode
is 8, which means the 9 key
remoteCode
remoteCode
These
stores 5. When
now matches
remoteCode
IF…THEN
is 1,