HP VS17 Series - Software Flow Chart

HP VS17 Service Manual
17
6.2 Software Flow Chart
1) MCU initialize.
2) Is the eeprom blank?
3) Program the eeprom by default
values.
4) Get the PWM value of brightness from
eeprom. Check the pin PANEL1 and
PANEL2 to tell which panel to get with it.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys
pressed?
8) Enter factory mode.
9) Saving the power key status into
eeprom. Turn on the LED and set it to
green color. Scalar initializes. In standby
mode?
Update the lifetime of back light.
10) Check the analog and digital port, are
there any signals coming?
11) Does the scalar send out an interrupt
request?
12) Wake up the scalar.
13) Are there any signals coming from
analog or digital port?
Display " No Input Signal " message.
And go into standby mode after the
message disappear.
14) Program the scalar to be able to show
the coming mode.
15) Process the OSD display.
16) Read the keyboard. Is the power key
pressed?
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
1
5
Y
N
16
1
7
19
Y
N
18