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Hi all,
I am using a NRF8001 Bluetooth 4.0 module + PIR sensor to communicate with my Intel Edison. Following some instructions I found in this forum, one of the possible solution is to use GATT (https://software.intel.com/en-us/articles/using-the-generic-attribute-profile-gatt-in-bluetooth-low-... https://software.intel.com/en-us/articles/using-the-generic-attribute-profile-gatt-in-bluetooth-low-...). First I installed Gatttool as well as Bluez-5.24 software package in my Edison.
The command I used in Yocto is:
root------my password------rfkill unblock bluetooth ------export PATH=$PATH:~/bluez-5.24/attrib/ ------gatttool -b D2:AD:9F:B7:BB:60 -I -t random ------connect------char-write-req 0xe 0100
When the PIR sensor is triggered, it sends 0x31 (AscII which is char '1' ). And I can now receive it on the command window.
Now the problem is how to script it into Arduino code ?
I tried to use system() call in my arduino sketch like:
void setup() {
Serial.begin(115200);
system("root");
system("my password");
system("rfkill unblock bluetooth");
system("export PATH=$PATH:~/bluez-5.24/attrib");
system("gatttool -b D2:AD:9F:B7:BB:60 -I -t random");
system("char-write-req e 0100");
}
void loop() {
// other code
}
But it did not work, the bluetooh link is not established as expectation. And I also would like to ask how to display the message I received "0x31" in the arduino serial port?
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Hello channinglin,
If using the system command is not working for you, then I'd suggest to use a system service instead. By the way, you don't need to call "root" and your password when using the command system.
I wrote a document about a similar subject that you might find of help. It will require some modifications but probably not many:
/docs/DOC-102152 Automatically connect to a device through Bluetooth
Regarding your second question, the user CMata_Intel wrote a very good example on how to "see" Linux info in the Arduino serial port, check /message/370799# 370799 Re: Battery supply monitor, it might be of your interest.
Peter.
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Hello channinglin,
If using the system command is not working for you, then I'd suggest to use a system service instead. By the way, you don't need to call "root" and your password when using the command system.
I wrote a document about a similar subject that you might find of help. It will require some modifications but probably not many:
/docs/DOC-102152 Automatically connect to a device through Bluetooth
Regarding your second question, the user CMata_Intel wrote a very good example on how to "see" Linux info in the Arduino serial port, check /message/370799# 370799 Re: Battery supply monitor, it might be of your interest.
Peter.

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