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Thanks for the help Mike. I've got it under control now.
FYI: I turned off the PIC’s UART port and simulated it in software. Everything works as expected now. I’m skeptical that the UART was the problem. The bug was probably right under my nose I just couldn’t see it, wouldn’t be the first time.
I double checked the PIC data sheet and I was confused with the speed, my bad, thanks. Your correct, I setup the address and data then just toggle the WE pin. I’ve also tried toggling the CE pin with WE low and toggling both. As for the toggling of bits I tried both toggling and writing...
OK, Let’s say I’m going to write ASCII “A” to address 01h then try to read address 00h to 40h and send the data back to my terminal. If I use the polling method I get the “A” at 01h back AND all the other addresses have corrupt garbage in them. If I then write “B” to 02h the garbage changes...
That’s good advice and I know that my MCU is too slow to execute a successive page write. I have been polling the I/O7 pin and checking I/O6 pin for toggling states before attempting to read or write again. I’ve studied the data sheet for weeks. I’ve even read competitor chip’s data sheets to...
Hello people,
I’m currently working on a glcd project that has me pulling my hair out for two weeks now. This is what I have going on: I’m building a graphical lcd project that pulls bitmap data from a Atmel 28C64B-15PU eeprom and displays it on the glcd. The project uses a VB6 application I...
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