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The issue is that I get mostly jibberish all over the screen changing constantly, with glimpses of the text I’m trying to put there.
I think you’re right Henrik, I’ve been trying to make it do something it isn’t meant to do. Floating pins on PICs can do dayasheet pretty weird stuff, or on logic chips dataaheet any sort.
I’m surprised it worked at all with no external osc components. Just trying to get an LCD to work first on my 16F LCD showing mostly jibberish on 16F I must admit I’m surprised that it doesn’t have a built in oscillator. LCD showing mostly jibberish on 16F That’s just weird, selecting No and None in the Internal Oscillator column of the product selector produced the above list. With both OSC pins floating you have neither. LCD showing mostly jibberish on 16F Hi, Actually, according to the product selector on Microchips website only 18 out of around models which are in production is missing an internal oscillator of one type or another.
I am using the internal oscillator, could that be a cause? LCD showing mostly jibberish on 16F Henrik, That would explain why I can’t find an easy way of turning it on and off. When I tried your code it compiled OK, but you have one line missing which could be the cause Code:. Join Date Oct Posts Showing numbers in diffrent ways? And it doesn’t seem to be in your list Henrik. I’m using the dos-based pickit2 so I don’t get to choose the option bits before I hit program.
I made the pcb with a cnc machine, the socket is very close to the pic and the lcd is plugged straight into it. LCD showing mostly jibberish on 16F Thanks for thereply. LCD is on port B Code:.
Thought that all pics had that?? The time now is Glad you got it sorted! I put a 4 line lcd on and the same problem occurs.
To be honest I don’t really know how to set the option register bits with the setup I am using now.
Sorry for the confusion. I haven’t used this pic before so might have some config wrong. Set the command and data times up higher, still the same. 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.
I haven’t gone that high with the numbers so I’ll try that in the morning.
I don’t think it’s a connection problem but I will triple check. Checking the 16F does indeed show it’s got internal oscillator. Results 1 to 22 of I’d add a note to the post with the list but unfortunately I’m not trusted to edit my own posts. 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.
LCD showing mostly jibberish on 16F I cut my teeth on the 16F and it is my understanding it does not have an internal oscillator. 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?
It seems unclear dtasheet me in the datasheet what frequency the internal OSC runs at and if any external components are required. LCD showing mostly jibberish on 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.
Not real happy with a couple of the SMD solder pads for the pic. The datasheeg has solder, and the pad has solder, but not convinced they are soldered together. LCD showing mostly jibberish on 16F That seems correct. I’ve never used that line before and always used 4-bit LCDs. Members who have read this thread: LCD showing mostly jibberish on 16F After reading more datasheet and looking 16f71 the PBP inc file for this chip, the best I came up with in my tired state is to change my first line to Datasheett a look at my last post in this thread http: Dafasheet feel stupid for claiming I’ve done this before but not knowing how to set option reg bits.
Similar Threads Microcode studio not showing data, though it is receiving it By Tina10 in forum Schematics. Having said that, in my circuit the OSC pins are left floating. I put a 4Mhz osc on it thismorning, works perfectly. Reading a Hex value from a Modem and showing it as Decimal.
Join Date Jan Posts So, I think it’s either a slow controller or a hardware problem like one of the datalines not reaching the controller. How is it doing anything? Join Date Dec Posts