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Recent Forum Posts

Re: I/O Pin status during startup

I Never saw something like that ....

but, if we consider LEDs as current generators when illuminated ;) ( Yes, the built in input clamp diodes ... )

the question comes ... is the pic in a true...
Acetronics2 Today, 08:27

Re: I/O Pin status during startup

Many a times, I have used an I/O pin to drive a relay through a transistor. So, assuming I need an active high output to turn on the relay, I have observed (across microcontroller families) that the...
Jerson Today, 04:22

Re: Assigning Two Byte Variables from Switch Settings

After doing some reading, I found the Logical Operator function will do exactly what I need.

After grabbing the data from PORTA, I

resulta = PORTA & %00001111' Returns 8-bit binary result for...
John25 Today, 02:49

Assigning Two Byte Variables from Switch Settings

I am working on a small initial project where I would like to read a six-position dip switch on RA0 to RA5.

My intention is to assign RA0-RA3 to BYTE variable SW4 and RA4-RA5 to variable SW2. I...
John25 Yesterday, 23:00

Re: Low frequency Hardware PWM

My interest is in hardware PWM but PBP cannot manipulate the appropriate registers that is needed to get that low on frequency, as Richard noted.

Have not done it yet but hope to manage it.
...
Ioannis Yesterday, 18:38

Re: I/O Pin status during startup

Yeah, this sounds very strange.

As others have said, after power on and reset (POR) all the pins come up as inputs so they should not go either high or low for any duration. Leakage current into...
HenrikOlsson Yesterday, 17:04

Re: Low frequency Hardware PWM

its not quite that simple, contemporary chips like 18f27q43 have a pwm module that can use alternative clock sources like the mfosc @[500k] and its that allows 50hz operation, some others have...
richard Yesterday, 12:26

Re: Low frequency Hardware PWM

Are you talking PWM or HPWM? Isn't using the CCP module automatically HPWM?

I kept hitting my face into the chart in the PBP manual under HPWM that lists lowest possible frequency per oscillator...
Demon Yesterday, 12:09

Re: I/O Pin status during startup

if you have leds that illuminate on power up before the pins have been set as outputs then you are doing something very odd
or you have broken something

schematic and code ?
richard Yesterday, 11:55

Re: I/O Pin status during startup

Greetings,

thank you Jerson for your reply.

Regarding "design your project with active low outputs to account for the High-Z input state at power on", what do you mean exactly?
If, for...
PaulMaker Yesterday, 09:58

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