Search found 16 matches

I have recently taken on the challenge of interfacing my 18F452 to a PLC using Modbus RTU. I noticed that there was a modbus.c file in the drivers directory but no example files. I contacted tech su ...

I created a spread sheet for timer 1. If I got it right the following will be true:

With 20MHz Clock

setup_timer_2(T2_DIV_BY_16,255,16) will interrupt every 13.056mSec

I am using a 18F242 and need to setup a internal timer to interrupt every 16ms. I am having trouble figuring out how to configure a timer to do a 16ms interrupt. Is there a good reference I can use ...

The code below is working code. I need to tell when the external interrupts have stopped so I can display 0.00 FPM. I think that some sort of a timmer would do the trick but everything I have tried ...

Thank you Neuton and ttelmah for the quick replies. Using your sugestions I was able to transmit once a second and get everything working just the way it should.

I have working code below to measure the speed of a conveyor belt in FPM but would like to output that speed every second instead of constant output. Everything I have tried to output at one second i ...

I am trying to drive 2 7 segment leds using a 16F877 with a MAX7219 LED Display Driver chip using PICC SPI Drivers. I have done a search of the forum and found 4 references that I have used to accomp ...

I am able to measure the milli-seconds between pulses and averaging 8 of them before sending out the serial port. While I am receiving pulses I press a buton to save the current milli-second pulse av ...

Mark,

What would be the range of time you would like to measure?

Between 30ms and 800ms

Is 1 ms accurate enough for the speed measurement?

1 mS accuracy should be ok because I will ave ...

I will try to explain what I am trying to measure. I have a roller with two magnetic targets on it that are pickups for a hall effect switch. When the switch passes over the targets it sends a 5vdc ...

Thanks for the quick responses. I have a couple more questions concerning the code above.

In the code above, what is the measurement in? Is it in us or ms? I have built a test fixture in the pas ...

I am working with a 16F873 with a pulse input connected to B0. I would like to measure the time between a Low going pulse and the next High going pulse and place it in a variable to be used in some m ...

Thanks for the quick response mark. I was able to load and display my custome cursor.
Below is how I loaded it and then displayed it for anyone that may be doing the same thing using LCD.C.

// ...

I would like to create a custom LCD character to display on my 4x20 LCD. This was rather easy in PBP, but appears to be more complicated in PICC. I searched the forum and found one message that pert ...

Thanks for your reply. I am not worried as much about using more parts as I am about running out of memory when programming. The Menu is ratherextensive with three levels. This aproach seems simple ...