Ohayden at 16:28, 24 April 2008

2008-04-24T16:28:51Z

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[[Category:HouseRobot|R]]

I successfully got a console by using the "gumstix" port from the Robostix. Look for the label "gumstix" in the lower just right of center on the robostix board. Here is a photo:

[[Image:500px-Robostix-Top.jpg|400px]]

Notice the pin label "1". This isn't on my newer robostix. I do see it on my old burnt out robostix though. The gumstix port brings the FFUART pins out in 5v logic-level form.

{| border="1"
! Pin !! Signal
|-
| 1 || Gnd
|-
| 2 || FFUART TxD (GPIO 39)
|-
| 3 || +5
|-
| 4 || FFUART RxD (GPIO 34)
|}

Here is the Max233 TTL to RS232 adapter that I used. Pin 1 is closest to the hole in the bottom left of the folloing photo:

[[Image:AD233asm1.jpg]]

The mapping to my Max233 Adapter is as follows:
{| border="1"
! Signal !! Robostix Pin !! Max233 Pin !! Max233 Label
|-
| Gnd || 1 || 3 || -
|-
| FFUART TxD (GPIO 39) || 2 || 1 || Tx
|-
| +5 || 3 || 4 || + 5v
|-
| FFUART RxD (GPIO 34) || 4 || 2 || Rx
|}

I built the cable out of the two ends of a floppy power cable and wired it as described in the above table.

[[Image:FloppyPowerCable.jpg]]

'''''*NOTE*: I must be careful when plugging the cable in as it does make a difference. I'm going to label each end of the cable. One side for the gumstix port and the other for the TTL adapter.'''''

I was able to get a console by plugging a cable from the Max233 Adapter into my Belkin RS232 to USB adapter (Model F5U409). I'm using a RS232 to USB adapter since my laptop doesn't have a serial port. I used RealTerm for my terminal program and had my RS232->USB adapter on COM 1. I set the following settings:

{| border="1"
! Baud Rate !! Parity !! Data Bits !! Stop Bits !! Hardware Flow Control
|-
| 115200 || None || 8 || 1 || None
|}

Here is the console:

[[Image:RobostixGumstixConsole.jpg]]

HouseRobot:RobostixConsole - Revision history

Ohayden at 16:28, 24 April 2008