User:Bdragon/BMCNotes
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How to connect to the BMC serial interface in a pinch
Parts needed:
- A null modem cable (9-pin DE9)
- A second machine with a serial port or USB to serial adapter (RS232 style, NOT a TTL UART dongle)
- 3 jumper wires with female 2.54mm sockets on one end (Sold variously as "breadboard" or "prototyping" wires)
Procedure:
- Trim the socketless end of the jumper wires and strip the insulation back by 1cm (TODO verify) or so.
- For each wire, fold the end of the stripped wire over itself slightly as depicted. This will be used as a makeshift spring contact.
- Insert the prepared bare ends of the jumpers into pins 2 (RxD), 3 (TxD), and 5 (GND) of one end of the null modem cable. (The pin numbers are stamped next to each female socket on the plastic shell. Use a magnifying glass and/or bright light to identify.)
- Connect the female ends of the jumpers to the BMC serial socket. (TODO verify table)
| Board side | Cable side |
|---|---|
| Pin 3 | Pin 2 |
| Pin 5 | Pin 3 |
| Pin 9 | Pin 5 |
Connect the other end of the null modem cable to your second machine and set your terminal software for 115200 8N1, no flow control.
