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I feel stupid for claiming I’ve done this before but not knowing how to set option reg bits. The leg has solder, and the pad has solder, but not convinced they are soldered together. I will add a crystal osc tomorrow and change the osc source and see how I go. Members who have read this thread: LCD showing mostly jibberish on 16F That’s just weird, selecting No and Datasheeet in the Internal Oscillator column of the product selector produced the above list.

I think you’re right Henrik, I’ve been trying to make it do something it isn’t meant to do. I’ve never used that line before and daatasheet used 4-bit LCDs. Checking the 16F does indeed show it’s got internal oscillator. LCD showing mostly jibberish on 16F Obviously by using the internal oscillator you can omit the external crystal shown in the easyPIC5 diagram. I’m sure I recall using a specific command to use the internal osc in the past, whereas this datasheet indicates clearing option register bit 5 will turn it on?

I haven’t gone that high with the numbers so I’ll try that in the morning.

PIC16F – Microcontrollers and Processors – Microcontrollers and Processors

LCD showing mostly jibberish 166f716 16F Your open pins were probably acting like little antennas and picking up something nearby on occasion that just happened to be what the pic was expecting as an OSC frequency, hence the occasional flicker of life. Showing numbers in diffrent ways? Apart from that it’s the usual suspects like ADC and comparators but your device doesn’t have any of that on the pins used so that can’t be it.

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LCD showing mostly jibberish on 16F I don’t have a 16F to play with, but the following code works with an 18F running at 4mhz from its internal clock.

PDF 16F716 Datasheet ( Hoja de datos )

LCD showing mostly jibberish on 16F I have used both the pic16f and which are in the list. Reading a Hex value from a Modem and showing it as Decimal. LCD showing mostly jibberish on 16F Thanks for thereply. I went with the best thing I could come up with and assumed that as I can see text at times, then the pic is oscillating. It seems unclear dayasheet me in the datasheet what frequency the internal OSC runs at and if any external components are required.


And it doesn’t seem to be in your list Henrik. Some of the config lines in the code might need removing as you are using a different family of PICs than the one I used for testing.

Not real happy with a couple of the SMD solder pads for the pic. Just trying to get an LCD to work first on my 16F If the actual speed is different, then all timings will be off. So, I think it’s either a slow controller or a hardware problem like one of the datalines not reaching the controller.

I have replaced the pic already and suspect I didn’t get enough heat onto the pad 2nd time round. LCD showing mostly jibberish on 16F I cut my teeth on the 16F and it is my understanding it does not have daatsheet internal oscillator.


With both OSC pins floating you have neither. LCD showing mostly jibberish on 16F After reading more datasheet and looking at the PBP inc file for this chip, the best I came up with in my tired state is to change my first dagasheet to I am using the internal oscillator, could that be a cause?

(Datasheet) 16F pdf – PIC16F Data Sheet 8-bit Flash-based Microcontr PIC16F (1-page)

LCD showing mostly jibberish on 16F I datashfet admit I’m surprised that it doesn’t have a built in oscillator. LCD showing mostly jibberish on 16F All is good. LCD is on port B Code:. Results 1 to 22 of I’m just glad I’m able to shift some of the blame from myself to Microchip in this instance. The time now is I’m surprised it worked at all with no external osc components. Similar Threads Microcode studio not showing data, though it is receiving it By Tina10 in forum Schematics.

I’d add a note to the post with the list but unfortunately I’m not trusted to edit my own posts. Have a look at my last post datashet this thread http: I put a 4 line lcd on and the same problem occurs. Join Date Dec Posts Join Date Oct Posts I added it anyway and no change. I’m using the dos-based pickit2 so I don’t get to choose the option bits before I hit program. I haven’t used this pic before so might have some config wrong.

Set the command and data times up higher, still the same. Thanks for pointing that out Mark!