This is a Common Cathode 7 Segment display example.
No additional configuration is required when using Common Cathnode.
| Constant Name | Controls | Comment |
|---|---|---|
|
|
Inverts controls for Common Anode displays |
Required for Common Cathode displays |
|
|
Support PFET or PNP high side driving of the display |
Inverts Common Cathode addressing pin logic for multiplexed displays |
This is a Common Cathode 7 Segment display example.
Example:
'Chip model
#chip 16f1783,8
'Output ports for the 7-segment device
#define DISP_SEG_A PORTC.0
#define DISP_SEG_B PORTC.1
#define DISP_SEG_C PORTC.2
#define DISP_SEG_D PORTC.3
#define DISP_SEG_E PORTC.4
#define DISP_SEG_F PORTC.5
#define DISP_SEG_G PORTC.6
' This is the usage of the SEG_DOT for decimal point support
' An optional third parameter of '1' will turn on the decimal point
' of that digit when using DisplayValue command
#define DISP_SEG_DOT PortC.7
'Select ports for the 7-segment device
#define Disp_Sel_1 PortA.1
#define Disp_Sel_2 PortA.2
#define Disp_Sel_3 PortA.3
dim count as word
dim number as word
Do Forever
For count = 0 to 999
number = count
Num2 = 0
Num3 = 0
If number >= 100 Then
Num3 = number / 100
'SysCalcTempX is the remainder after a division has been completed
number = SysCalcTempX
End if
If number >= 10 Then
Num2 = number / 10
number = SysCalcTempX
end if
Num1 = number
Repeat 10
DisplayValue 1, Num1,1 'Optional third parameter turns on the dp dot on that digit
wait 5 ms
DisplayValue 2, Num2
wait 5 ms
DisplayValue 3, Num3
wait 5 ms
end Repeat
Next
LoopAlso, see 7 Degment Display Overview,DisplayChar, DisplayValue
