Matrix user forums

I just finished my first project using flowcode V4 for PICs. I thought I would list a few things for first timers like myself. My project was to replace an every day TV antenna rotor control with something with position feed back and greater range of travel. 1) Define you project on paper. What do y...

Martin, And all others following this...... This is what I would call the final version. Running at 32 Mhz Really corrected accuracy issues EEPROM Read/Write is working. (had to paste in the C code for EEPROM to work) IR Zero/Home position sensor is working. (Not wired to the PIC) Positioning is +- ...

I am trying to run the chip at 32MHz. I have the following added to the beginning of my C code: osccon = 0x70; osctune = 0x40; <--- not sure if I need this. Went to the chip configuration and ENABLED the PLL. Went to project options and set the clock speed for 32000000. Pointing accuracy is better t...

Martin, I wish I had thought about writing the counting routine that way. Gave me much better accuracy than before. I still have about a 5 degree over shoot, but only when traveling >200 degrees. I can live with it. I have thought about a RUN AWAY or NO MOVEMENT routine to the program. Just been a b...

Jan,

I may not have written it to proper way, but it works. That is just the part that stores the antenna position in EEPROM for future recall after a power down.

I am using a Hall sensor to read gear position. there are 6 off and 6 on pulses per revolution. Using P_Count =3 per degree of movement I under shoot on a 360 rotation. Using P_Count =4 per degree of movement I over shoot on a 360 rotation. I either need to be able to count a 1/2 pulse, or move wher...

Would be nice to have a pulsed input simulation (ON OFF ON OFF) to use on inputs in the simulator. This could be used as the representation of either a HALL Sensor, or other OPTO Sensor input. Would be even better if the frequency could be adjusted for just a few per second to many. While trying to ...

Just a small update. I have it set to increment the Ant_Pos every 4 pulse changes. I also included an 8Ms delay before going back to counting the pulses again. Playing with the delay time I have gotten it down to a +-2 degree accuracy over a 540 degree rotation. Rare that I would ever go that far in...

Opps should have said need to up date things every 4.8 to 4.9 pulses.

Well here ya go. I found my counting problem on the CCW side. On a full swing from -90 degrees to +450 degrees I over rotate about 7 degrees. And if I swing back to -90 degrees the tick marks are dead on. Think I will play with a delay some where in the code, I have it set to increment the Ant_Pos e...

Will post what I have when I get home. (love midnight shift) Counts pulses very accuratly now (for one direction) wont count them for the other. 10 times told to go the same amount and each time marks lined up dead on. Ran out of time to look things over to see where I messed up. For others, in a nu...

I may be setting my interrupt wrong. 1) Input from Switch (switch is resistor pulled high) looking for the LOW (Input is on RA2 pin1) 2) Interrupt set to RB0, calls macro flag_Low, set to trip on falling edge. 3) Macro simply adds 1 to the current pulse count Program, in simulation never sees the in...

Dan, Speed is not what I am after. I need to know distance. I was wrong about the magnets, there are 6 on and 6 off. or one every 60 degrees of rotation of the pulse wheel. will have to manually rotate the thing and see how many revolutions it takes to spin the main output shaft 1 degree. I am using...

Interesting idea. I will give that a whirl when I get home later. Ate most my project time today tracing down a bad relay. I am almost 100% sure I am double counting the same pulse. May even try removing the magnetic ring (from CD ROM drive motor) and just use 3 for on,off,on.

One would think counting pulses from a Hall sensor would be kind of easy. Hall sensor delivers 0101010101010101 (8 off and 8 on) per revolution. In my code I am just looking at the OFF or LOW. Being that this is an AC motor that is driving the hall sensor speed is not constant. I am reading the puls...

Steve, Thank you for the reply. I am sure it is a difficult task trying to find the balance. I just hope that it is reconsidered for future up-dates. I can understand dividing up functional differences between Home/Professional versions. But I think it needs to be looked at by what is EXTERNAL to th...

I agree, But it is almost limiting like saying you can only use to 1/2 the PIC ports. But my own fault, I thought they meant an External EEPROM not the one that is in the PIC. I could never have gotten this far this fast without flow code. I would still be trying to figure out what "C" code was. I w...

I have the home version of FC4. I love it. I must have misread the page that describes the differences from the Home to the Pro version. Built, tested, retested my file, (with much help from the forum). After being satisfied I had things the way I wanted I went to program my PIC. Only now did I disc...

Lot of money for a 1 up project

%$*#($&#*@*# MAN.....
This thing works perfectly except the EPROM part.
Yeah I read that data sheet, but thought EPROM was included.
I feel like that should have been a standard, not an add on.

Buyer be ware I guess.

I thought I was all done!, went to compile my file and received the following: "This version of flowcode will compile for the following components only" LED LEDarray LED7seg LED7seg4 LCDdisplay Switch Switchbank ADC Keypad PWM Formulaflowcode MIAC What NO EPROM???? I thought the student version incl...

To Benj, medelec35, Dan81, Sean, And all the others.....

Just have to button up a few things and call this one DONE !!!

I could not have done it with out your help.


Bob

Hey, got it working. Didn't use a macro call, just added it to the end of the program. Just have to wait for my hall sensor to arrive and I can start putting this thing in a pretty box. Although not sure how many pulses are on the magnet ring I used, I think 16, but that is just some easy math to fi...

Nope,
That helps very much.
When I did BASIC programming many years ago use to call them GOSUBs.

Good, I think I am getting the hang of it all. Glad FC will let you copy parts of things from one saved file to another. I have kind of built my code in chunks and saved each under a different name as I went. Time to start putting it all together into one file. Can't thank you guys enough for all th...