Hello everybody,
I write to the community because I have a problem using Bluetoothctl.
I am looking to write in an attribute with the gatt command "Write".
Here is my command line operation suite:
$ bluetoothctl
[bluetooth]# power on
[bluetooth]# connect A6:41:29:67:30:ED
[my_device]# menu gatt
[my_device]# select-attribute
/org/bluez/hci0/dev_A6_41_29_67_30_ED/service0034/char0035
[my_device:/service0034/char0035]# write 0x41 0x54 0x2b 0x4e 0x69 0x6d
0x70 0x00
This is where I have a problem. I never get an error message but the BLE
device only receive the 1st byte 0x41.
However, using Android applications like LightBlue or nRF Connect, it
receives correctly what I seek sent.
I scanned the net without finding an answer. I do not really understand
why it does not work ...
For information:
Linux version 4.13.0-36-generic (buildd@lcy01-amd64-017) (gcc version
7.2.0 (Ubuntu 7.2.0-8ubuntu3.2)) #40-Ubuntu SMP Fri Feb 16 20:07:48 UTC 2018
I only have "Bluetoothctl" to do the job because the Alpine Linux
distribution contains nothing else:
https://pkgs.alpinelinux.org/contents?file=&path=&name=bluez&branch=edge&repo=main&arch=x86
Is there anyone who can help me find my mistake?
Best regards,
Manuel
Hello,
Thank you for your reply. This question dates a bit.
I remember having to change my code a lot to make it work but I do not
know why it works now.
I do not have any more odds in my python code:
'write 0x' + ' 0x'.join(sString.encode('hex') for sString in (sString +
'\0'))
Best,
Manuel
On 06/14/2018 12:54 AM, Szymon Janc wrote:
> Hi,
>
> On Thursday, 8 March 2018 18:11:26 CEST Manuel Masiello wrote:
>> Hello everybody,
>>
>> I write to the community because I have a problem using Bluetoothctl.
>> I am looking to write in an attribute with the gatt command "Write".
>>
>> Here is my command line operation suite:
>>
>> $ bluetoothctl
>>
>> [bluetooth]# power on
>> [bluetooth]# connect A6:41:29:67:30:ED
>> [my_device]# menu gatt
>> [my_device]# select-attribute
>> /org/bluez/hci0/dev_A6_41_29_67_30_ED/service0034/char0035
>> [my_device:/service0034/char0035]# write 0x41 0x54 0x2b 0x4e 0x69 0x6d
>> 0x70 0x00
>>
>> This is where I have a problem. I never get an error message but the BLE
>> device only receive the 1st byte 0x41.
>> However, using Android applications like LightBlue or nRF Connect, it
>> receives correctly what I seek sent.
>> I scanned the net without finding an answer. I do not really understand
>> why it does not work ...
>>
>>
>> For information:
>> Linux version 4.13.0-36-generic (buildd@lcy01-amd64-017) (gcc version
>> 7.2.0 (Ubuntu 7.2.0-8ubuntu3.2)) #40-Ubuntu SMP Fri Feb 16 20:07:48 UTC 2018
>>
>> I only have "Bluetoothctl" to do the job because the Alpine Linux
>> distribution contains nothing else:
>> https://pkgs.alpinelinux.org/contents?file=&path=&name=bluez&branch=edge&rep
>> o=main&arch=x86
>>
>> Is there anyone who can help me find my mistake?
> Digging out this unanswered question as people seems to ask this on IRC too.
> You need to use quotes:
> write "0x41 0x54 0x2b 0x4e 0x69 0x6d 0x70 0x00"
>
> And yeah, this could be fixed to accept also 0x01020304 and no quotes for
> conveniense:-)
>
Hi,
On Thursday, 8 March 2018 18:11:26 CEST Manuel Masiello wrote:
> Hello everybody,
>
> I write to the community because I have a problem using Bluetoothctl.
> I am looking to write in an attribute with the gatt command "Write".
>
> Here is my command line operation suite:
>
> $ bluetoothctl
>
> [bluetooth]# power on
> [bluetooth]# connect A6:41:29:67:30:ED
> [my_device]# menu gatt
> [my_device]# select-attribute
> /org/bluez/hci0/dev_A6_41_29_67_30_ED/service0034/char0035
> [my_device:/service0034/char0035]# write 0x41 0x54 0x2b 0x4e 0x69 0x6d
> 0x70 0x00
>
> This is where I have a problem. I never get an error message but the BLE
> device only receive the 1st byte 0x41.
> However, using Android applications like LightBlue or nRF Connect, it
> receives correctly what I seek sent.
> I scanned the net without finding an answer. I do not really understand
> why it does not work ...
>
>
> For information:
> Linux version 4.13.0-36-generic (buildd@lcy01-amd64-017) (gcc version
> 7.2.0 (Ubuntu 7.2.0-8ubuntu3.2)) #40-Ubuntu SMP Fri Feb 16 20:07:48 UTC 2018
>
> I only have "Bluetoothctl" to do the job because the Alpine Linux
> distribution contains nothing else:
> https://pkgs.alpinelinux.org/contents?file=&path=&name=bluez&branch=edge&rep
> o=main&arch=x86
>
> Is there anyone who can help me find my mistake?
Digging out this unanswered question as people seems to ask this on IRC too.
You need to use quotes:
write "0x41 0x54 0x2b 0x4e 0x69 0x6d 0x70 0x00"
And yeah, this could be fixed to accept also 0x01020304 and no quotes for
conveniense:-)
--
pozdrawiam
Szymon Janc