Brett,

You must connect all the VDD and VSS pins on the chip. The 16F datasheets are poor when it comes to this information but the 18F datasheets are much clearer.

Cheers,

Adrian

Mince,

Maybe I am missing something here. I see a four byte difference between your Opt 4 and Opt 0 compiles.

Cheers,

Adrian

It looks like your "goto CNT;" is inside your "for" loop. As such, it keeps jumping back to the start and never gets beyond 0.

Cheers,

Adrian

It might be useful if you post a schematic of your current circuit. Your last post suggests that you may not be clear about how the L293D would use PWM to control a DC motor works. You will always see your motor voltage across the motor terminals. The L293D does nothing to change the output voltage....

There should be no reason that you cannot modify the code to use any "standard" I/O pins.

Cheers,

Adrian

It is easy to "bit bang" an interface for the SHTXX series devices using I/O lines. Check out the examples here

http://www.mikroe.com/eng/products/view ... t1x-board/

Cheers,

Adrian

Have you looked at the signal you are putting into the L293D EN pin? Is it showing the waveform you are expecting? The L293D datasheet states that 5kHz is the maximum switching frequency for PWM using the EN line. You might want to try a lower value and see if it resoilved your issue. Cheers, Adrian

Working fine from Canada.

Cheers,

Adrian

JFP, Have you included "built_in.h" in your code. I was caught by this one. I had used delay_ms in my code but had not included "built_in.h". The code complied without errors but the delays were all wrong. After reading the help file, I was surprised that the complier had not complained about the mi...

shanpuru,

I have used DS18X20's to measure sea water temperature. The sensor was potted in standard cold-cure epoxy (in the centre of a machined DELRIN fitting).

Cheers,

Adrian

ignite,

cal_x_min, cal_x_max,...... are "int"

You are trying to store a sixteen bit value in an eight bit EEPROM location. You need to break each of the cal values into two bytes and store them across eight EEPROM locations.

Cheers,

Adrian

jonaslpalma, From the datasheet: 17.2.2.8 Internal Regulator The PIC18FX455/X550 devices have a built-in 3.3V regulator to provide power to the internal transceiver and provide a source for the internal/external pull-ups. An external 220 nF (±20%) capacitor is required for stability. Note: The drive...

mori,

Have you:

a. set the IPEN bit to enable both high and low priority interrupts (power up default is all interrupts have high priority); and
b. set the priority bits for each of the timer interrupts?

Cheers,

Adrian

An RS232 link with a total baud rate error greater than 3% would be considered unacceptable in a commercial product. 0.16% error is fine. Remembering that errors could potentially exist on both ends of the link, it is good design practice to minimize the baud rate error as much as possible. As you c...

I recently had issues getting the LCD routines to work with in MikroC Pro with an 18F258. I submitted a support ticket and was told to change the initialization code for D4 and D5. I would suggest you file a ticket to confirm that it is not a definition file issue with the PIC you are using. See bel...