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89s52 interfacing
I would suggest you to try to interface 89S52 with PC (via RS232 converter) just to be sure you are sending with the right baudrate and parity. Use win terminal or similar software to check characters you are sending. Write a simple application that sends characters (strings)...
This is a general error when FlashMagic can not connect to microcontroller.
1. Check if all switches are in correct position for programming.
2. Check if DTR/RTS signals come to the board (check your board schematic)
3. Check if RX/TX come to your board
avrmicrocontrollers.com - **broken...
Re: Project tips
Any particular microcontroller family in mind? PIC, AVR, ARM, 8051?
Try with AVRs, here is a list of project sites:
**broken link removed**
You will certainly find something to start with. If you have some additional questions it is always a good idea to try to ask Google...
1. Design protocol with some checksum. Always check received packets for valid checksum.
2. If possible have only one master.
3. You can also try to use 9-bit UART mode for quick addressing.
avrmicrocontrollers.com - **broken link removed**
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