Originally Posted by
shafi008
Hi I have the following
a). 4.00 GR
b). F0x040A 4.000 (with this i tried 4.7 / 220 / 10 PF's)
i tried with both , may i will try with a new Pic16f84a.
I dont get it when i take off the VSS then the led is constantly lighted up.
if i keep the multimeter to the pin RB0 then the light comes up steadily.
power at that time would be 0.79 and at MCLR to VSS it is 1.24 volts.
should i change the watchdog / powerup timer ON. and try...?
how much power should i get at the pin?
If you disconnect VSS the power flows through the PIC as though it were a resistor. I compiled with default configs, powerup timer enabled and WDT on. Have you tried reading back your hex from the PIC ? Maybe it is not programming at all. That could happen if the wrong COM port is selected, or programmer is jumpered wrong.
EDIT: try copy paste the hex I posted into your programmer and see if it blinks. BTW WDT and Power up timer are actually good things unless they somehow interfere (like when using sleep) Powerup allows PIC to wait for power to get stable B4 booting up and WTD resets a stalled out PIC.
Last edited by Archangel; - 29th April 2009 at 06:41.
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