Difference between revisions of "OOCP"
m (→control the system : tty console can be emulate over USB) |
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[[Image:wiring.jpg | 300px]] | [[Image:wiring.jpg | 300px]] | ||
| − | '''WARNING''' : '''Never''' branch USB and Power at the same time, you should burn your PC-USB port ! | + | <span style="color:red"> '''WARNING !''' </span> : '''Never''' branch USB and Power at the same time, you should burn your PC-USB port ! |
==control the system : tty console can be emulate over USB== | ==control the system : tty console can be emulate over USB== | ||
Revision as of 14:26, 14 March 2008
(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
USB protocol can provide up to 500mA (100mA by default) at 5V, then we have to plug usb power on dev light power and usb-gnd on devlight gnd like this :
WARNING ! : Never branch USB and Power at the same time, you should burn your PC-USB port !
control the system : tty console can be emulate over USB
In the first time, RS232 is needed to configure the kit. Here is an explanation how to configure module g_serial to use USB as serial port.
To launch on 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 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.
