Comments (5)
palagraph
commented on May 29, 2024
I found solution to date and program problems. For some reason one needs to split commands into chunks of 21 bytes (not counting CR). Sending first 21 bytes we don't receive response, now send the rest and you'll get correct response!
|set date 14 11 10 22> //nothing returned
| 33 > 14 11 10 22 40
|read date>14 11 10 22 40
The same deal with set program. Easy enough to split chunks in the code!
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neilpa
commented on May 29, 2024
Oh, this is essentially the same as the response chunking. They're also split and you needed to wait for the terminating newline.
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neilpa
commented on May 29, 2024
Although, I don't remember hitting this when testing out myself. Were you suffixing you're commands with a \r or a \n. I think it's required to do the former as you can see here
https://github.com/neilpa/circulate/blob/master/Library/AnovaDevice.m#L137
That may be the source of your issue.
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palagraph
commented on May 29, 2024
I end it with CR (0x0d) (it's Android, so it's Java). I am playing with my code right now - verifying the length of chunk.
It seems the same is with your code. I tested with [self sendCommand:@"set date 14 11 10 19 40"];
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palagraph
commented on May 29, 2024
OK. Here is perfectly working code (well it works for set date, set program easily grows to 65 charcters, so I have to loop by chunks):
String commandText = mCommandValue.getText().toString();
int chunk = 20;
if (commandText.length() < chunk + 1){
byte[] bytecommand = new byte[commandText.length() + 1];
System.arraycopy(commandText.getBytes(Charset.forName("US-ASCII")), 0,
bytecommand, 0, commandText.length());
bytecommand[commandText.length()] = 0x0d;
mBluetoothLeService.writeCharacteristic(mAnovaCharacteristic, bytecommand);
} else {
byte[] bytecommand = new byte[chunk+1];
System.arraycopy(commandText.getBytes(Charset.forName("US-ASCII")), 0,
bytecommand, 0, chunk);
bytecommand[chunk] = 0x0d;
byte[] bytecommand2 = new byte[commandText.length() - chunk + 1];
System.arraycopy(commandText.getBytes(Charset.forName("US-ASCII")), chunk,
bytecommand2, 0, commandText.length() - chunk);
bytecommand2[commandText.length() - chunk] = 0x0d;
mBluetoothLeService.writeCharacteristic(mAnovaCharacteristic, bytecommand);
mBluetoothLeService.writeCharacteristic(mAnovaCharacteristic, bytecommand2);
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