Need help with proteus LCD project - Electronic Circuits Projects Diagrams Free

gtnevada · 30th July 2005, 05:10 AM

Hello and Thanks in advance for your input.

I am new to pics. I have a copy of proteus 6.3 and prefer to learn pics use proteus because i dont have time to wire the circuits. I am tring to interface the Hitachi LCD to a pic16F628a using 4 bit mode. The program does not work at all.

1: I try the same code with actual hardware and works fine so my code is good.
2 I complile with MPlab and simulate and everything works fine.

3 I did a code in 8 bit mode with proteus and this works also so the LCD works with proteus. I have a sample 4bit project came with proteus but its in C. I dont understand a thing in Pic C programming. Only Assembly.

I even simulate the lcd using just switches and it only work in 8bit mode.

please can some tell why is this so and if you have a sample proteus project using 4 bit please email me. I only program in Assembly. please not C nor Basic.

Thank you.

**Nigel Goodwin** · 30th July 2005, 08:02 AM

Quote:

Originally Posted by gtnevada

Hello and Thanks in advance for your input.

I am new to pics. I have a copy of proteus 6.3 and prefer to learn pics use proteus because i dont have time to wire the circuits. I am tring to interface the Hitachi LCD to a pic16F628a using 4 bit mode. The program does not work at all.

1: I try the same code with actual hardware and works fine so my code is good.
2 I complile with MPlab and simulate and everything works fine.

3 I did a code in 8 bit mode with proteus and this works also so the LCD works with proteus. I have a sample 4bit project came with proteus but its in C. I dont understand a thing in Pic C programming. Only Assembly.

I even simulate the lcd using just switches and it only work in 8bit mode.

please can some tell why is this so and if you have a sample proteus project using 4 bit please email me. I only program in Assembly. please not C nor Basic.

Thank you.

I don't know anything about Proteus, but my tutorials have reliable, fast, well tested, 4 bit LCD code.

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30th July 2005, 05:10 AM	(permalink)
gtnevada	Need help with proteus LCD project Hello and Thanks in advance for your input. I am new to pics. I have a copy of proteus 6.3 and prefer to learn pics use proteus because i dont have time to wire the circuits. I am tring to interface the Hitachi LCD to a pic16F628a using 4 bit mode. The program does not work at all. 1: I try the same code with actual hardware and works fine so my code is good. 2 I complile with MPlab and simulate and everything works fine. 3 I did a code in 8 bit mode with proteus and this works also so the LCD works with proteus. I have a sample 4bit project came with proteus but its in C. I dont understand a thing in Pic C programming. Only Assembly. I even simulate the lcd using just switches and it only work in 8bit mode. please can some tell why is this so and if you have a sample proteus project using 4 bit please email me. I only program in Assembly. please not C nor Basic. Thank you.