Search found 41 matches

by Francesco.C
Sat May 22, 2010 1:17 pm
Forum: Compiler
Topic: Desperately seeking Help. PIC18F242 Resets!
Replies: 5
Views: 3535

Thank you for the advice guys.

Yes I got a pullup on the MCLR pin......but, I discovered that it was not soldered very well. It was floating. :oops:

I can get-on now with my project now.

Thanks a lot.

Regards

Francesco
by Francesco.C
Sat May 22, 2010 7:07 am
Forum: Compiler
Topic: Desperately seeking Help. PIC18F242 Resets!
Replies: 5
Views: 3535

I missed the 'while - wend' from the post, butt it is already there.

Any more ideas?

Francesco
by Francesco.C
Fri May 21, 2010 6:57 pm
Forum: Compiler
Topic: Desperately seeking Help. PIC18F242 Resets!
Replies: 5
Views: 3535

Desperately seeking Help. PIC18F242 Resets!

Hello guys, please take a look at this simple code ---------------------------------------------- Device = 18F242 Clock = 4.0 WDT(OFF) Output (PORTA.0) High(PORTA.0) --------------------------------------------- I am getting a regular square wave output. This is a mistery to me. I have tryed everyth...
by Francesco.C
Wed May 05, 2010 5:32 pm
Forum: Compiler
Topic: Help with Fan Control
Replies: 0
Views: 2751

Help with Fan Control

Hi there, I would like to control a 4-pin fan (with PWM facility). I can see how to implement a PWM of my choice, but I am lost when I try to read read the tacho from the fan. I need to to count the number of pulses so I can change the PWM value. I suppose I need to set a timer, then read the number...
by Francesco.C
Sun Jul 26, 2009 7:50 pm
Forum: Compiler
Topic: Cannot pass pass variable to 'Toggle' function.
Replies: 2
Views: 2367

Thank you Morris,

It works fine.

I did think was something like that.
I have used SW on and off since February and I have relied on you guys
to help me when I am stuck.

Thank.

Francesco C.
by Francesco.C
Sun Jul 26, 2009 6:25 pm
Forum: Compiler
Topic: Cannot pass pass variable to 'Toggle' function.
Replies: 2
Views: 2367

Cannot pass pass variable to 'Toggle' function.

Hi there, I have a bank of LEDs connected on PORTB that I want to toggle at random by passing a variable to the 'Toggle' function. For example ................................... Sub Light(x as bit ) toggle(x) End sub Light(portb.2) Light(portb.5) ............................ The code above gives th...
by Francesco.C
Sat Jul 18, 2009 2:08 pm
Forum: Compiler
Topic: How to split a Word into two-8bit Bytes.
Replies: 3
Views: 3079

Francis,

Thank you very much, it works! :lol:

Francesco C
by Francesco.C
Sat Jul 18, 2009 11:35 am
Forum: Compiler
Topic: How to split a Word into two-8bit Bytes.
Replies: 3
Views: 3079

How to split a Word into two-8bit Bytes.

Hi there, I am stuck on a really simple operation. :? I have a value X I need to to split it into two byte for saving into memory locations. =================== X As Word Low_byte, High_byte As Byte X= %1111001101110101 // for example Low_byte= X AND 255. // It works I get the lower byte of X High_b...
by Francesco.C
Wed Jul 08, 2009 7:17 pm
Forum: Compiler
Topic: Help in How to detect an Overflow.
Replies: 8
Views: 4850

dman776, Thank you for the help Yes the solution was to check the carry flag in the status register. ........ If Status.0=1 then /// the carry flag is set indicating an overflow! do something End If ................... Not being very familiar with a basic compiler, I was not aware you could check th...
by Francesco.C
Tue Jul 07, 2009 9:20 pm
Forum: Compiler
Topic: Help in How to detect an Overflow.
Replies: 8
Views: 4850

Hi guys, I need to clarify my question. X is defined as 'Byte'. This mean it can only hold 255 max. I x is incremented by 2. Therefore when x=254 and the counter increments by 2, x=0. Hence I cannot say 'If x > 255...'. Thats why i need to check if it has excedded 255 (overflow). Any idea? Regards F...
by Francesco.C
Mon Jul 06, 2009 7:17 pm
Forum: Compiler
Topic: Help in How to detect an Overflow.
Replies: 8
Views: 4850

Help in How to detect an Overflow.

Hi guys,

I need some advice regarding this:
I have a counter, X, as a Byte. (It needs to be a Byte)

The counter increments and eventually it will be greater than 255.

I want to detect this overflow. How do I do this without using assembly code?

Thanks in advance.

Regards

Francesco C.
by Francesco.C
Wed Jul 01, 2009 4:47 pm
Forum: Modules
Topic: Help in formatting Binary counter for LCD display.
Replies: 2
Views: 2553

I feel stupid. :oops:

I should have known that. I have used it before.

Thanks.

Francesco C.
by Francesco.C
Tue Jun 30, 2009 8:13 pm
Forum: Modules
Topic: Help in formatting Binary counter for LCD display.
Replies: 2
Views: 2553

Help in formatting Binary counter for LCD display.

Hi guys, I am using the commad: BinToStr(Number) to output a binary number to an LCD display. The problem is this. Say I want to display a binary number (8bits) counting from 0 to 127, the LCD display will show nothing when the count is zero. Then, as the counter increments , will show '1' and no ze...
by Francesco.C
Sat Jun 13, 2009 4:14 pm
Forum: Modules
Topic: Usart Command Stops SPI
Replies: 0
Views: 3105

Usart Command Stops SPI

Hi guys, can you help me to understand this problem? The code below is under development. It send a command to serial memory device. The memory device then replies with its ID code. The code worked fine until I introduced the 'USART.setbaudrate' command. Now I cannot get the reply from the memory de...
by Francesco.C
Wed Jun 03, 2009 4:24 pm
Forum: Modules
Topic: How to red a string using SUART?
Replies: 2
Views: 2823

Thank you for the advice. Iwill consider changing my hardware design.

Regards

Francesco C.