Difference between revisions of "OOCP"
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You think they are too many cables on your devlight ? | You think they are too many cables on your devlight ? | ||
| − | yes | + | yes me too : |
[[Image:tropdecable.jpg]] | [[Image:tropdecable.jpg]] | ||
| Line 15: | Line 15: | ||
* Power the kit (AC/DC bloc) | * Power the kit (AC/DC bloc) | ||
* control the system (RS232) | * control the system (RS232) | ||
| − | * download files | + | * download files fastly (Ethernet) |
| − | But it is possible to use only USB to : | + | But it is possible to use only [http://fr.wikipedia.org/wiki/USB USB] to : |
| − | + | ==Power the kit== | |
| − | + | {{Warning| It's a Hack, so it can damage your PC-USB port.}} | |
| − | + | ||
| + | USB protocol can provide up to 500mA (100mA by default) at 5V, then we have to plug USB power on DevLight power and USB-GND on DevLight GND like this : | ||
| + | |||
| + | [[Image:wiring.jpg | 300px]] | ||
| + | |||
| + | {{Warning| '''Never''' connect USB and standard Power at the same time, or you shall burn your PC-USB port.}} | ||
| + | |||
| + | ==Control the system : tty console can be emulated over USB== | ||
| + | In the first time, RS232 is needed to configure the kit. [[USB_Gadget | Here]] is an explanation on how to configure module ''g_serial'' to use USB as serial port. | ||
| + | |||
| + | To launch it at boot, I wrote a script named ''S10gserial'' in ''/etc/init.d/'' directory | ||
| + | |||
| + | <source lang=bash> | ||
| + | #!/bin/bash | ||
| + | # load core USB controler | ||
| + | modprobe imx_udc | ||
| + | # load serial USB controler | ||
| + | modprobe g_serial | ||
| + | </source> | ||
| + | |||
| + | '''TODO:''' Connect the ''ttygserial'' device on APF console automatically. | ||
| + | |||
| + | ==download files fast== | ||
| + | with USB tty console can be more fast than standard RS232 then, big files can transit trough it. | ||
Latest revision as of 14:07, 12 June 2009
(Only One Cable Project)
You think they are too many cables on your devlight ?
yes me too :
Yes it is possible to develop applications with only one cable :
To program the apf, we need tree cables to
- Power the kit (AC/DC bloc)
- control the system (RS232)
- download files fastly (Ethernet)
But it is possible to use only USB to :
Power the kit
 |
Warning: It's a Hack, so it can damage your PC-USB port. |
USB protocol can provide up to 500mA (100mA by default) at 5V, then we have to plug USB power on DevLight power and USB-GND on DevLight GND like this :
| |
Warning: Never connect USB and standard Power at the same time, or you shall burn your PC-USB port. |
Control the system : tty console can be emulated over USB
In the first time, RS232 is needed to configure the kit. Here is an explanation on how to configure module g_serial to use USB as serial port.
To launch it at boot, I wrote a script named S10gserial in /etc/init.d/ directory
#!/bin/bash
# load core USB controler
modprobe imx_udc
# load serial USB controler
modprobe g_serial
TODO: Connect the ttygserial device on APF console automatically.
download files fast
with USB tty console can be more fast than standard RS232 then, big files can transit trough it.
