Matrix user forums

martin i dont think thats the case, because when i command 1m/s on time pulse i get it with the scope, the dipslay signals are there with the scope but it does nothing, when i use 20mHZ or less the display works, its like this with 3 different brands of displays also check out this post on the relat...

martin, i like the overflow fcf,that one has me thinking of lcd updating schemes.... i used a port interupt for the pulse counter project you helped with, using the 690 chip with 20Mhz crystal it works great, i wanted to up the enty and use a 16f1939, so i redid the fcf to accomidate that, 2 things ...

martin- i'll have to remember that in future, i know everything you draw is there for a reason or future precaution (thats why i asked)

alright martin i reverse engineered your flowchart for port interupt only... and i dont understand the importance of the rb4_previous=rb4 deal, if i take it out as in the fcf below everything works the same, do i need that in there for some reason? because the command before you turned on the led of...

ben, i didnt state my question correct on that, the main thing is if i command an output pin on,then give it a long delay, then fire an interupt while the delay is still halting the program to command the output that is currently high to low will it do that even though the delay is not timed out yet...

ohh i see where i screwed up, there is 8 bits not 7 thanks i didnt catch that(im a newbie at this) :lol: ..... what i do to conferm actual clock speed is 2 things, if i adjust the speed in the projects options to 32M then command an output on for 1m/s on 1m/s off in loop when check with scope i shou...

ohh i see where i screwed up, there is 8 bits not 7 thanks i didnt catch that(im a newbie at this) :lol: ..... what i do to conferm actual clock speed is 2 things, if i adjust the speed in the projects options to 32M then command an output on for 1m/s on 1m/s off in loop when check with scope i shou...

suppose hypotheticly if have the chip turn on a output for 1 hour by making an output high then giving a 1 hour delay..... what would happen when i hit an interupt that would turn on another led for 10 seconds?........ what is the difference between a port interupt and a pin interupt? is it that the...

thanks martin, thats a neat deal - (im gonna dwell on this for a while to give it time to sink in) then i'll get back with you on it if you dont mind...

martin, thats over my head, can you start me out simple with only one interupt on a page, thats kind of my problem with the interupts is that i dont know on the screen which part goes to what part and how they work together, i guess for simulation purposes could you start me off with just a port int...

what im trying to do is figure out how interupts work, can someone draw up a flowchart for a rising edge pin interupt for a pic16f690? what i was trying to do is when a quick logic edge is applied to a pin it enables a interupt and turns on a led for 1 second, i think that is said backwards because ...

actually i figured it out by using the forum here Re: Driving Piezo with PIC by medelec35 » Sun May 22, 2011 4:41 am nmindana wrote: the word PLL is new to me, is this used to double the frequency of the main clock in the PIC? Nealy. PLL (Phase Lock Loop) on a few 18F devices and on newer 16F18xx wi...

i bought a couple 16f1939(i/p) and cant seem to set the internal clock to 32meghz..... all i seem to get is the 16 meg default

Hi I have a Pro license for Flowcode 4 and one Pro license for Flowcode ds24 version 4. Since they are mergin in to the same product in version 5, will I have two Version 5 Pro copies at 50% discount or one for 100% discount? :D i dont think thats correct that they are merging, in the list of suppo...

steve- i understand your point, i do get unseated about these things since i had a couple friends buy pro to be able follow my evolving projects and that i've been planning to buy pic24 version in early january, gotta say that the $300 for version 4 is the best 300 dollars i've ever spent, i guess t...

so what about the people that just bought flowcode 4 in the last couple months, isnt that a slap in the face that we have to pay to upgrade consitering the long run time of version 4

martin- thanks for fixing the fcf file,works great,xplain alittle more on how the error trapping works with the comments you wrote in the decision block? also as you probably remember im using the pic16f690 and i run them at factory default which is 4MEG hz, they run with external crystal to 20MEG a...

thanks martin- that was messing with me all day, what an idiot i am right? i actually thought of clearing the display at one point and ignored my impulses then forgot about it until i read your post, your a life saver, i can get some sleep now that you helped me get it working

this counter works for input frequency below 273hz which is good for what im looking for, it does have addtional circuitry and feedback not shown to make it work, operation is when you set a count it monitors the accumulating counts of a pin and when that pin count matches the set count it outputs l...

for the lcd display digikey #67-1758-ND--> i was messing with resistance values and it appears that the main value to look at is that the voltage at pin #15 doesnt go above 4.6volts, is this correct? i like the backlighting at 4.1-4.3 volts at pin 15, i simply adjust the voltage with a lm317 (variab...

wow!!! thats awesome... thanks

how would i edge trigger an input using a simple interupt? what im trying to do is when the switch goes high the output flashes once...this would trigger a counter to increment each time a pulse is received

an adc takes 0 to 5v and breaks it down into 0-255,.... is there anyway to use calculation box to do the same byte breakdown for an output, say if i want 255 different pulsewidths between 1m/s and 100m/s and i dont want to write output delays and counts for each one? reason why i ask is my friend ha...

hey martin thanks for the promp help on this, i modified it- named variable to (int) int=0 then int=int+1 the with loop i changed it to check at end of loop (loop until) using variable int="the number count" this works amazing!! thank you for showing me the magic...

martin- i tried to get the loop to count in integers prior to help request and couldnt do it, can you show me how this is done? also i have only 36 presets and i ran out of memory words, i have a hardtime with the microchip page, is there another pic chip that my version of flowcode supports that ha...