<a href="http://photos.cardboardbox.org.uk/main.php?g2_itemId=2673"><img style="float:left;" src="
http://photos.cardboardbox.org.uk/main.php?g2_view=core.DownloadItem&g2_itemId=2674&g2_serialNumber=2"></a>
<a href="http://photos.t.cardboardbox.org.uk/main.php?g2_itemId=2676"><img style="float:left;" src="http://photos.t.cardboardbox.org.uk/main.php?g2_view=core.DownloadItem&g2_itemId=2677&g2_serialNumber=2"></a>
Unfortunately the board doesn't have a DB9 connector, looking at the AkizukiDenshi page there doesn't seem to be a support board(For each of their H8/SH2 boards there are support boards with a DB9 port, some LED's etc) for this particular board either. I didn't have my soldering iron, bits box, *anything* handy,.. So I trundled off to Hardoff and scrabbled around there for a while and found a half metre long DB9 ↔ DB9 cable for 300yen… So I got home, pretty knackered, chopped it in half and then tried to find some colour to pin mapping on the tinternet. No such luck, RS232 doesn't have a colour coding system apparently and I didn't have a multimeter on me. It's pretty easy to work out which pin is which though… open up statserial to show you the status of the serial port. Then start touching the wires until you see one of the status lines toggle, when that happens you have one of the status lines and either RTS or CTS (They should be '1' in statserial), make a mental note of those two, and then touch all the wires with one and then the other.. the one that toggles status lines is either RTS or CTS and the other one was one of the status lines. Using that high wire you can then find all of the status lines… at the end you should be left with 4 wires; RXD, TXD, GND and either RTS or CTS. You can find out which is the remainder of either RTS or CTS by seeing if it toggles the status lines. You should have 3 wires left, to find RXD and TXD you connect two of the wires together and use minicom to send some data, if it comes back you have RXD/TXD and the left over wire is GND. To workout which is RXD and which is TXD I just wired the lines into the serial port on my nexys2 and uploaded my UART there. You could probably work it out by sending some data and seeing if that wire is able to toggle one of the status lines though…. which wire is RTS or CTS doesn't really matter, for a 3pin serial cable you just wire some of the status lines to one of them and some to the other so that they are always high. Maybe leave out RI…
Don't blame me if you kill your port by doing this. My FTDI board still works fine, and I figured the TTL↔RS232 level converter should be pretty tolerant because it should be able to inteface with +/-12V signals.
<a href="http://photos.cardboardbox.org.uk/main.php?g2_itemId=2697"><img style="float:left;" src="http://photos.cardboardbox.org.uk/main.php?g2_view=core.DownloadItem&g2_itemId=2698&g2_serialNumber=2"></a>
So I got my ghetto cable all wired up, and I was going to upload a monitor app into the user flash. So I set the jumpers according to the sheet, ran the writing tool, not a sausage, doesn't look like the board is running. So I read the docs again;- This teaches me that I should read things properly before I buy shit. Anyhow, the 3069f operates at between 4.0v and 5.0v according to Renesas. So, I bought a 5v AC→DC plug when I ordered the board. The page even says you need a 5.8v ~ 12v supply! According to the documentation that comes with the board you can use the “lands” as they've termed it to bypass the LDO if you have a stable supply and the LDO operates down to 5.4v. Most of these wall plugs are slightly higher than they say on the tin so I don't intend to bypass the LDO. So I ordered another supply and some other misc bits, another 1000yen down the drain in postage and COD fees.