bmuigai
New Member
Hi guyz,
I am delighted to have come to this forum. I'm new to pic programming and so far i have managed to make a 7x10led matrix using a pic16f84a and a cd4017 up from 7x5. I have simulated some text on proteus 7.9 and it seems to be doing alright. However, when i implement it on hardware I have a slight problem. It doesn't scroll all the characters. I have tried changing the scan speed, the clocking speed for the 4017 in code and even changed the crystal. I have tried 3.59mhz, 10mhz and I am currently using 20mhz. I am currently scrolling 8 characters which is quite an improvement. unfortunately, the higher the frequency, the higher the speed so that its less legible. The 7x5 had all the above issues.
My code is currently using less than 10% of the maximum (1024 words). Anyone with insight as to how to go about it, please help. Btw, i use assembly since am not familiar with c or any other HLL.
I am delighted to have come to this forum. I'm new to pic programming and so far i have managed to make a 7x10led matrix using a pic16f84a and a cd4017 up from 7x5. I have simulated some text on proteus 7.9 and it seems to be doing alright. However, when i implement it on hardware I have a slight problem. It doesn't scroll all the characters. I have tried changing the scan speed, the clocking speed for the 4017 in code and even changed the crystal. I have tried 3.59mhz, 10mhz and I am currently using 20mhz. I am currently scrolling 8 characters which is quite an improvement. unfortunately, the higher the frequency, the higher the speed so that its less legible. The 7x5 had all the above issues.
My code is currently using less than 10% of the maximum (1024 words). Anyone with insight as to how to go about it, please help. Btw, i use assembly since am not familiar with c or any other HLL.