I use two development boards AduC812 from Phytec. Both boards collect the data of two temperature sensors via analog/digital converter. This works without any problems. Because of missing hardware components (only one COM port) the analog/digital converted signals of these two boards must be transmitted via one rs232 cable to the personal computer. My question is how to built a daisy-chained rs232 cable. And how implement this in a µvision2 c# code?
"Does any of the chips have support for SPI so you can forward the data between the processors?"
Yes, both SPI and I2C are available on the stated board.
The board also supports RS485...
www.8052.com/.../170192