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First thank you for the library and please excuse me but the behavior is driving me nuts and I don't know how to debug it by myself. I am trying to get data back from a color sensor on arduino through simpleRPC.
here is the declaration of the functions:
bool as7341setLed(bool enable_led, uint16_t led_current_ma) {
as7341.setLEDCurrent(led_current_ma);
as7341.enableLED(enable_led);
return enable_led;
}
Vector<uint16_t> as7341read(){
if (!as7341.readAllChannels(readings))
{
![OK](https://user-images.githubusercontent.com/5367483/214178461-f3574d95-5b6d-468a-810b-b003f1bdd2ea.png)
//Serial.println("Error reading all channels!");
for (int i=0;i<12;++i){readings[i]=0;};
}else{
for (int i=0;i<12;++i){u2[i]=readings[i];};
}
return u2;
}
here is my interface definition:
interface(
Serial,
as7341setLed, "as7341setLed: Set LED brightness. @enable_led: enable_led. @led_current_ma: led_current_ma. @return: enable_led.",
as7341read, "as7341read: Read all color sensors. @return: readings.");
I am using the Python interface.
What I observe is that the setLed works everytime and returns reliably everytime
For the read function it reads correctly 2 whole vector of 12 ints... but on the 3rd call the python seems to hang before returning the array.
if I press the reset button on the arduino it traces back io.py in the _read_basic() function
with unpack requires a buffer of 4 bytes.
I added some logging info but it doesn't help me much understand the issue.
Here is a screen capture representing the first two calls
and here is the 3rd one:
and here is the Log:
1:04:18 AM
< H B
< H B
< H B
1:04:20 AM
< I ?
1:04:20 AM
False
1:04:23 AM
< I ['H']
1:04:24 AM
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
1:04:24 AM
[95, 199, 309, 537, 2437, 206, 967, 1653, 1905, 1138, 2436]
1:04:29 AM
< I ['H']
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
< I H
1:04:29 AM
[95, 198, 309, 537, 2434, 206, 969, 1655, 1906, 1140, 2441]
1:04:37 AM
< I ['H']
1:04:43 AM
---------------------------------------------------------------------------
error Traceback (most recent call last)
~\AppData\Local\Temp\ipykernel_28600\2026148949.py in <module>
----> 1 my_list=interface.as7341read()
2 my_list
<string> in as7341read(self)
~\AppData\Roaming\Python\Python39\site-packages\simple_rpc\simple_rpc.py in call_method(self, name, *args)
186 # Read return value (if any).
187 if method['return']['fmt']:
--> 188 return self._read(method['return']['fmt'])
189 return None
190
~\AppData\Roaming\Python\Python39\site-packages\simple_rpc\simple_rpc.py in _read(self, obj_type)
101 :returns: Return value.
102 """
--> 103 return read(
104 self._connection, self.device['endianness'], self.device['size_t'],
105 obj_type)
~\AppData\Roaming\Python\Python39\site-packages\simple_rpc\io.py in read(stream, endianness, size_t, obj_type)
83 logging.info(endianness,' ',size_t,' ',obj_type)
84 if isinstance(obj_type, list):
---> 85 length = _read_basic(stream, endianness, size_t)
86 logging.info('it is a list')
87 return [
~\AppData\Roaming\Python\Python39\site-packages\simple_rpc\io.py in _read_basic(stream, endianness, basic_type)
29 full_type = (endianness + basic_type).encode('utf-8')
30 logging.info('read full_type: ',full_type)
---> 31 return unpack(full_type, stream.read(calcsize(full_type)))[0]
32
33
error: unpack requires a buffer of 4 bytes
I tried to change the array to a size of one only ... I tried to change the type by casting it to int.
Nothing seems to allow me to retrieve more than 2 arrays from the sensor...
Thank you for your help.
The text was updated successfully, but these errors were encountered:
I think this may be due to a flaw in the implementation of Vector. For now, could you try to create a local vector instead of returning a global one? E.g.,
On Tue, 24 Jan 2023 at 07:41, Jeroen F.J. Laros ***@***.***> wrote:
I think this may be due to a flaw in the implementation of Vector. For
now, could you try to create a local vector instead of returning a global
one? E.g.,
Vector<uint16_t> as7341read() {
Vector u2(12);
// ...
return u2;
}
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Hello,
First thank you for the library and please excuse me but the behavior is driving me nuts and I don't know how to debug it by myself. I am trying to get data back from a color sensor on arduino through simpleRPC.
here is the declaration of the functions:
here is my interface definition:
I am using the Python interface.
What I observe is that the setLed works everytime and returns reliably everytime
For the read function it reads correctly 2 whole vector of 12 ints... but on the 3rd call the python seems to hang before returning the array.
if I press the reset button on the arduino it traces back io.py in the _read_basic() function
with unpack requires a buffer of 4 bytes.
I added some logging info but it doesn't help me much understand the issue.
Here is a screen capture representing the first two calls
and here is the 3rd one:
and here is the Log:
I tried to change the array to a size of one only ... I tried to change the type by casting it to int.
Nothing seems to allow me to retrieve more than 2 arrays from the sensor...
Thank you for your help.
The text was updated successfully, but these errors were encountered: