19 Feb
2013
19 Feb
'13
10:42 p.m.
Hi all,
I am playing around with the USB commands in SIMTrace but I'm having a
bit of trouble. I wrote a short python script to send a GET_VERSION
command. However, only the first one is received by the board.
If I run it, the first time I will see a GET_VERSION in the debug
terminal. If I try again, however many times, I do not see any output.
Why is this?
The script:
---snip---
#!/usr/bin/python
import usb.core
import usb.util
cmd="\x01\x00\x00\x00"
dev=usb.core.find(idVendor=0x16c0, idProduct=0x0762)
dev.set_configuration()
dev.write(1, cmd, 0)
---snip---
20 Feb
20 Feb
2:41 a.m.
Samuel Weinbeck wrote:
I am playing around with the USB commands in SIMTrace
but I'm having a
bit of trouble. I wrote a short python script to send a GET_VERSION
command. However, only the first one is received by the board.
If I run it, the first time I will see a GET_VERSION in the debug
terminal. If I try again, however many times, I do not see any output.
Why is this?
Maybe you need to read a response?
//Peter
5:02 p.m.
On Tue, Feb 19, 2013 at 5:41 PM, Peter Stuge <peter(a)stuge.se> wrote:
Samuel Weinbeck wrote:
The command I am running is SET_LED. I run it twice. The first is to
turn the green LED on, and the second is to turn it off. It doesn't
get turned off. The debug terminal only shows "SET LED" once.
Looking at the source code, it doesn't appear that there is a
response. OPENPCD_FLAG_RESPOND is not set in the flags member of the
header.
I am playing around with the USB commands in
SIMTrace but I'm having a
bit of trouble. I wrote a short python script to send a GET_VERSION
command. However, only the first one is received by the board.
If I run it, the first time I will see a GET_VERSION in the debug
terminal. If I try again, however many times, I do not see any output.
Why is this?
Maybe you need to read a response?
4089
days inactive
4090
days old
2 comments
2 participants
participants (2)
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Peter Stuge -
Samuel Weinbeck