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Recent Forum Posts

Re: serial LCD 1602 Backpack using PIC16F690 for Hitach HD44780

Hello,

you're right
my assumption was that software or hardware control serial communication are the same
and one way or another I'll get the same result.

if I may ask in this project what...
jackberg1 Today, 12:01

Re: Can't reliably transfer over serial connection between two PICs

if I reduce control values to 1 or two, then it works, but totally wrong data is being decoded.
CuriousOne Today, 06:07

Re: Can't reliably transfer over serial connection between two PICs

I just tried this code, and it does not work:

TX:

Main:
FOR TxValue = 0 TO 255
CuriousOne Today, 05:57

Re: Can't reliably transfer over serial connection between two PICs

Yes, X is word type, and it sometimes get values over 8 bits, but never 345.
I tried sending lower numbers, like 4 or 16 or whatever - they also got distorted.

I also tried like this:
...
CuriousOne Today, 05:30

Re: How do I use code tags?

Bhoomi Online is a digital land records portal launched by the Government of
Karnataka that allows people to easily access their land information online.
Through this platform, users can check...
zuni01 Today, 02:19

Re: serial LCD 1602 Backpack using PIC16F690 for Hitach HD44780

Hello Ioannis,

good question,

when I design the PCB I used the PortB.5 with a 20Mhz crystal with bigger pcb foot print 46x17mm
then I decided to lower the parts count and the PCB foot print...
jackberg1 Today, 00:30

Re: Can't reliably transfer over serial connection between two PICs

1. How can you be sure that the receiving PIC will start "listening" just before the sending PIC? Better use a start character on the sender and use this character as a WAIT one on the receiving PIC...
Ioannis Yesterday, 22:13

Re: serial LCD 1602 Backpack using PIC16F690 for Hitach HD44780

Thanks for posting your project.

But why not use the Hardware USART instead of the Software one?

Ioannis
Ioannis Yesterday, 22:08

Re: serial LCD 1602 Backpack using PIC16F690 for Hitach HD44780

final code update in "16F690 LCD BACKPACK"
the low rs and high rs lines are not needed, since it control PortA.0 and not the HD44780 chip.
jackberg1 Yesterday, 19:25

Can't reliably transfer over serial connection between two PICs

Hello.
Having a strange issue.

PIC18F45K80 and PIC16F1936.

they are connected to each other via 22K resistor. PORTC.3 on both.

Trying to run the simple code:

TX: (1936)
CuriousOne Yesterday, 15:04

How To
Microchip Tips and Tricks
by
ScaleRobotics

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Published on - 17th June 2010 17:26 Number of Views: 12695
The link below has the most information about tips and tricks using PIC micro-controllers. The attachment is a smaller version ...

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Presetting Configuration Fuses (PIC Defines) into your Program
by
Melanie

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Published on - 20th May 2010 16:27 Number of Views: 13275
1. What are the Configuration Fuses?
2. How can I preset them in my Program?
2.a. When using MeLabs default ...

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Bits, Bytes Words and Arrays
by
Melanie

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Published on - 23rd April 2010 19:39 Number of Views: 11251
1. How can I reference a BIT in a BYTE?
2. How can I reference a BIT in a WORD?
3. How can I reference a BIT in a BYTE ARRAY?
4. How can I reference a BIT in a WORD ARRAY?
5. How can I reference a BYTE in a WORD ARRAY?
...

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I’m Running Out of CodeSpace, What Can I Do?
by
Melanie

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Published on - 23rd April 2010 19:28 Number of Views: 13903
I’m Running Out of CodeSpace, What can I do?
My progam is too slow - What can I do?

Apart from the obvious and move to a faster PIC with more program memory, there’s a few little known tricks you can try.
...

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