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IS-Dev Kit-7 User’s Manual
7850 East Gelding Drive ? Scottsdale, AZ 85260-3420
6. Operational Details
Power-Up Sequence (Steps 1,2,3)
Upon power-up or reset, controller performs the following steps:
Step 1: Check the status of Mode Select Switch for mode of operation. Initialize according to selected mode.
Step 2: Display dim and bright on the two switches and allow for adjustments of the brightness. There are 16
brightness levels (0 to F). When the internal timer is expired, the controller proceeds to Step 3. Every time a
switch is pressed, the timer gets reset. If a switch is held depressed the timer does not run. Switch activity are
not reported to host.
Step 3: Transmit 11H to host via RS232. Check the microSD for set up value. If set up values are
programmed, get the start address for switch 1, start address for switch 2 and the flag byte. If the set up values
are not programmed use the default values: start address for switch 1 = current address for switch 1 = 0001H,
start address for switch 2 = current address for switch 2 = 0010H and flag byte = 80H.
Step 4:
A. If attributes for start address of switch 1 are programmed, get the attribute for switch 1.
B. If attributes for start address of switch 1 are not programmed, use the default: Switch 1 Action
address for switch 1 = 0000H, switch 1 action address for switch 2 = 0000H, end address for
switch 1 = 0010H Timer2 for switch 1=00H timer1 for switch 1= 0AH.
C. If attributes for start address of switch 2 are programmed, get the attribute for switch 2.
D. If attributes for start address of switch 2 are not programmed, use the default: Switch 2 action
address for switch 1 = 0000H, switch 2 action address for switch 2 = 0000H, end address for
switch 2 = 0020H Timer2 for switch 2=00H timer1 for switch 2= 0DH,
Step 5: Send the pictures from microSD to OLED module according to start addresses.
Main Operational Mode
Step 6:
A.
B.
C.
D.
E.
F.
G.
H.
I.
If the switch 1 is pressed, process it. (see details below)
If the switch 2 is pressed, process it. (see details below)
If the timer for switch 1 is expired, process it. (see details below)
If the timer for switch 2 is expired, process it. (see details below)
If the switch 1 is released: Transmit B1H to host if flag is enabled.
If the switch 2 is released: Transmit B2H to host if flag is enabled.
If there is update flag for switch 1 is set, process it.
If there is update flag for switch 2 is set, process it.
Checks the host communication buffer for data. If there is data, process them. (For detail see
Communication Protocol )
J. Go to step 6 A.
IS-Dev Kit-7 Users Manual B.doc
Toll Free 1.877.2BUYNKK (877.228.9655) ? Phone 480.991.0942 ? Fax 480.998.1435
www.nkkswitches.com ? Email engineering@nkkswitches.com
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