| ??? 06/16/10 11:18 Read: times  | 
#176721 - 8052-based analyser Responding to: ???'s previous message  | 
Oliver Sedlacek said: 
 I keep meaning to make an RS232 'snooper' that picks up traffic in both directions. Are there any 8051 variants with 3 UARTs? I just remembered - this one uses one of the Cypress 8052 USB chips with 2 UARTs to monitor RS232:  
http://www.bonusdata.com/analyzer/analyzer.htm It does plain RS232 as well as vending protocols. It only monitors Rx and Tx, and only up to 57600 - but does give you timing...  | 



