Using Propeller with Professional Development Board's RS-232 port
SSteve
Posts: 808
Is it possible to use the Propeller with the PDB's RS-232 port?
I tried connecting TX to A31 and RX to A30 through 2.2k resistors. There's a 10k pull-up resistor on A30 and RTS is connected through a 2N3904 as shown in the PropSTICK schematic, but the Propeller Tool doesn't see the Propeller.
After connecting RX and TX to A30 and A31 I measured 4.3 volts on the power rail so I'm hoping I didn't destroy my Propeller already.
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OS-X: because making Unix user-friendly was easier than debugging Windows
I tried connecting TX to A31 and RX to A30 through 2.2k resistors. There's a 10k pull-up resistor on A30 and RTS is connected through a 2N3904 as shown in the PropSTICK schematic, but the Propeller Tool doesn't see the Propeller.
After connecting RX and TX to A30 and A31 I measured 4.3 volts on the power rail so I'm hoping I didn't destroy my Propeller already.
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OS-X: because making Unix user-friendly was easier than debugging Windows
Comments
····· since you are using RTS instead of DTR..
····· and since the Tool uses DTR and feeds it though a·transistor instead of direct,that Rs232 chip don,t have DTR!
····· you could use it as a secondary as you can program it to use RTS/CTS! You can Put a USBTOSER on the BS-1 serial adaptor,upside down
····
····· RES goes directly to the socket on USR device...then run PCO pin 3 on the BS-1 to tx prop·39· PCI pin 4 Bs-1 to rx 40 on the prop!
······ It is what I,m using right now!
····· Cheers Dennis
····
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Post Edited (cocokiwi) : 5/14/2006 8:26:27 PM GMT
http://forums.parallax.com/showthread.php?p=586891
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OS-X: because making Unix user-friendly was easier than debugging Windows