I want to use 74HC595 shift register .
I wote simple test code for it . it seems ok .. but with proteus simulation doesnt shows anything .
where am i doing mistake!!
here is my code..
Include "modedefs.bas"
DEFINE SHIFT_PAUSEUS 1000
TxData var byte
symbol HC_Data = PORTA.0
SYMBOL HC_Clk = PORTA.1
Symbol HC_latch= PORTA.2
'symbol HC_Load = PORTA.3
TRISA = 0
PORTA = 0
Main:
TxData = $F0
gosub Send_Data
pause 1500
TxData = $0F
Gosub Send_Data
pause 1500
goto main
end
Send_Data :
'
shiftout HC_data, HC_Clk, MSBFIRST, [TxData]
HC_Latch=1
pauseus 5
HC_Latch=0
return
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