ELM327 Bluetooth communication issueHow can I make continuous communication with OBD II ELM327 adapter?Ford CAN Data and ELM327Serial Port Communication using Bluetooth not Receiving Response, VC++, MFCobdII bluetooth with CANCaseXL toolBluetoothChat-to-ELM327 split response messageBluetoothSerial cordova plugin echoing writeBasic Serial-Communication over Bluetooth (Cmd Syntax Issue?)Android Bluetooth Serial Communication reads symbol “�”USB bluetooth dongle with PuTTYCommunicating with a Bluetooth OBDII dongle (I think it's an ELM327)
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ELM327 Bluetooth communication issue
How can I make continuous communication with OBD II ELM327 adapter?Ford CAN Data and ELM327Serial Port Communication using Bluetooth not Receiving Response, VC++, MFCobdII bluetooth with CANCaseXL toolBluetoothChat-to-ELM327 split response messageBluetoothSerial cordova plugin echoing writeBasic Serial-Communication over Bluetooth (Cmd Syntax Issue?)Android Bluetooth Serial Communication reads symbol “�”USB bluetooth dongle with PuTTYCommunicating with a Bluetooth OBDII dongle (I think it's an ELM327)
I made an Android app to communicate with an ELM327 OBD-II dongle via bluetooth.
When I test the app with a bluetooth serial terminal (CoolTerm / macOS) the app is receiving and sending data without an issue.
Using my app to transfer commands to the ELM will result in broken and splitted answers.
Output:
DataReceivedHandler: 9V
DataReceivedHandler: 9V>
DataReceivedHandler: 11.
DataReceivedHandler: 9V>
The example above should show the result of the AT RV command which queries the battery's voltage of the vehicle (I sent the command multiple times).
Expected (good) result should look like this: >11.9V
Before I send the first command to query OBD values the ELM is initialized by these AT-commands:
AT D
AT Z
AT E0
AT L0
AT S0
AT H0
AT SP 0
If you have any idea how to get clear answers from the ELM, please let me know.
Thanks in advance!
android bluetooth elm327 edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
add a comment |
I made an Android app to communicate with an ELM327 OBD-II dongle via bluetooth.
When I test the app with a bluetooth serial terminal (CoolTerm / macOS) the app is receiving and sending data without an issue.
Using my app to transfer commands to the ELM will result in broken and splitted answers.
Output:
DataReceivedHandler: 9V
DataReceivedHandler: 9V>
DataReceivedHandler: 11.
DataReceivedHandler: 9V>
The example above should show the result of the AT RV command which queries the battery's voltage of the vehicle (I sent the command multiple times).
Expected (good) result should look like this: >11.9V
Before I send the first command to query OBD values the ELM is initialized by these AT-commands:
AT D
AT Z
AT E0
AT L0
AT S0
AT H0
AT SP 0
If you have any idea how to get clear answers from the ELM, please let me know.
Thanks in advance!
android bluetooth elm327 edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
1
Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09
add a comment |
I made an Android app to communicate with an ELM327 OBD-II dongle via bluetooth.
When I test the app with a bluetooth serial terminal (CoolTerm / macOS) the app is receiving and sending data without an issue.
Using my app to transfer commands to the ELM will result in broken and splitted answers.
Output:
DataReceivedHandler: 9V
DataReceivedHandler: 9V>
DataReceivedHandler: 11.
DataReceivedHandler: 9V>
The example above should show the result of the AT RV command which queries the battery's voltage of the vehicle (I sent the command multiple times).
Expected (good) result should look like this: >11.9V
Before I send the first command to query OBD values the ELM is initialized by these AT-commands:
AT D
AT Z
AT E0
AT L0
AT S0
AT H0
AT SP 0
If you have any idea how to get clear answers from the ELM, please let me know.
Thanks in advance!
android bluetooth elm327 edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
I made an Android app to communicate with an ELM327 OBD-II dongle via bluetooth.
When I test the app with a bluetooth serial terminal (CoolTerm / macOS) the app is receiving and sending data without an issue.
Using my app to transfer commands to the ELM will result in broken and splitted answers.
Output:
DataReceivedHandler: 9V
DataReceivedHandler: 9V>
DataReceivedHandler: 11.
DataReceivedHandler: 9V>
The example above should show the result of the AT RV command which queries the battery's voltage of the vehicle (I sent the command multiple times).
Expected (good) result should look like this: >11.9V
Before I send the first command to query OBD values the ELM is initialized by these AT-commands:
AT D
AT Z
AT E0
AT L0
AT S0
AT H0
AT SP 0
If you have any idea how to get clear answers from the ELM, please let me know.
Thanks in advance!
android bluetooth elm327 android bluetooth elm327 edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
edited Mar 21 at 15:35
Chad Gilbert
31.1k36078
31.1k36078
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
asked Mar 21 at 15:26
Martin PfefferMartin Pfeffer
5,77563759
5,77563759
1
Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09
add a comment |
1
Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09
1
1
Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09
Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09
add a comment |
1 Answer
1
active
oldest
votes
Found the solution..
The terminal program was sending n and the ELM sends r for the termination of the statement.
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
add a comment |
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Found the solution..
The terminal program was sending n and the ELM sends r for the termination of the statement.
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
add a comment |
Found the solution..
The terminal program was sending n and the ELM sends r for the termination of the statement.
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
add a comment |
Found the solution..
The terminal program was sending n and the ELM sends r for the termination of the statement.
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
Found the solution..
The terminal program was sending n and the ELM sends r for the termination of the statement.
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
answered Mar 21 at 17:14
Martin PfefferMartin Pfeffer
5,77563759
5,77563759
add a comment |
add a comment |
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Seems everything is ok, but you read and show only part of the data buffer. Please add source code of communication part to clarify issue.
– Andrii Omelchenko
Mar 21 at 17:09