How to use gatttool non-interactive mode
bluetooth, raspberry-pi
Solution
the option is not `--char-write` but a `--char-write-req`.
Total command must be:
sudo gatttool -i hci0 -b 78:A5:04:44:0A:57 --char-write-req -a 0x0025 -n ff
Problem
I want to write `gatttool` in non-interactive mode. ``` $ sudo gatttool -i hci0 -b 78:A5:04:44:0A:57 -I [78:A5:04:44:0A:57][LE]> connect Attempting to connect to 78:A5:04:44:0A:57 Connection successful [78:A5:04:44:0A:57][LE]> char-write-cmd 0x0025 ff ``` I'm changing color of light that is using bluetooth. What is the equivalent by using non-interactive mode? I tried like this, but it doesn't change the color of light and to stop it I must use `ctrl+c`. There is no message at all. ``` sudo gatttool -i hci0 -b 78:A5:04:44:0A:57 --char-write -a 0x0025 -n ff ``` How can I write the command? Environment: I'm using `Raspberry Pi` and `Rasbian`.