share simple codes to learn how a sensor works...

[VUILLEMINYannick]

I have explored the codes in the libraries (*.h) but I can't get the different sensors to work like the microphone or the accelerometer.

Is it possible to share simple codes to understand the syntax of the functions?

For examples :

• The accelerometer must be calibrated I suppose? how?
  From what I see I have the impression that it is placed in a way not perpendicular to all the faces is it true?
• Can the microphone detect a range of frequencies?
• In the programs pre-integrated to the blocks, actions are performed when we tap on the blocks... it's the accelerometer that detects a vibration... how can we target it on a precise block without the "shock" spreading to the others?

Thanks for sharing ;-)

[remtrib]

Hi Yannick,

Here is an example with the accelerometer (or see the related branch🔐) :

#include <hwAccelerometer.h>
#include <debug_messages.h>
...

uint32_t last_update;

void BBinit() {
	last_update = HAL_GetTick();
}

void BBloop() {
	if (HAL_GetTick() > last_update + 1000) {
		tAccel accelerometer_data;
		refreshXYZ(&accelerometer_data);
		uint8_t buffer[50];
		sprintf((char *) buffer, "%d %d %d", (uint16_t) accelerometer_data.angleX,
				(uint16_t) accelerometer_data.angleY, (uint16_t) accelerometer_data.angleZ);
		send_debug_message(buffer, strlen((char *) buffer));
		last_update = HAL_GetTick();
	}
}

Regarding the initial orientation @bignouu and @flassabe already experienced with that and can probably answer.

For the microphone, you can use this code to retrieve the data and use conditions on the range of frequencies of your choosing or the ones predefined in the library:

#include <speaker.h>
#include <microphone.h>
...

uint16_t lvl = hwMIC_Get_Level();
if (lvl > RE/2 && lvl < DO) {
    ...
}

We usually use the microphone as a "tap" sensor. But the accelerometer chip is indeed technically able to detect vibration, tap, an orientation. Regarding the accessibility of such features from the library @flassabe can probably give a more accurate answer.

[remtrib]

Hi Yannick,
I understand your struggle, however may I remind you this is an early access to the technology we granted to only a few users that are not willing to wait for the alpha version of the official framework, which is still under development by our team. Don't loose faith, your user experience will be far better with the first release.
May I suggest you share your code with us so we can help find what is blocking you?

[VUILLEMINYannick]

Thanks @Gueldir the code is present in past post...

[remtrib]

Your code above does not include the fix suggested by @flassabe 15 days ago; that is why I was asking for an updated version.

So i upload the code into the BBs by the GUI, the BBs become blue, all is allright...
Try to run the program... but BBs stay Blue, i try with putty...

Do you mean Cyan as a result of the -p command or "load"? Or Blue as a result of your code after using "start" or -t -j ...?

i placed BBs on a face to have Z = 0, but no results...

Do you mean the color is still Blue (not Cyan) as you try to orient the BB with an angle of 0? Which would be normal behavior because -20 > Z = 0 < 20.

if (accelerometer_data.angleZ<20 && accelerometer_data.angleZ>-20) {
			setColor(BLUE);
		}

[VUILLEMINYannick]

Yes i make the modification but you right i dont copy the code here...
I work with the GUI and i load the compilated code... Cube turns cyan, and when i start it becomes blue (and that's normal u are right again)... but when i move, turn the block he doesnt change color and never be red...

I try with the CLI only...

[VUILLEMINYannick]

the code updated :

#include <hwAccelerometer.h>
#include <debug_messages.h>
#include <BB.h>
#include <hwLED.h>
#include <layer3_generic.h>
#include <serial.h>

uint32_t last_update;

void BBinit() {
	last_update = HAL_GetTick();
	tAccel accelerometer_data;
}


void BBloop() {

		tAccel accelerometer_data;
		refreshXYZ(&accelerometer_data);

		if (accelerometer_data.angleZ<20 && accelerometer_data.angleZ>-20) {
			setColor(BLUE);
		}
		else{
		setColor(RED);
		}
}