kriswiner
commented
3 years ago Thanks for the note Felipe, What MCU are you using? Are you using an Arduino core, which one? I am wondering if your missing data has more to do with the I2C implementation rather than anything to do with the sketch per se
On Mon, Sep 20, 2021 at 5:36 PM felipecookh @.***> wrote:
Hi Kris, once again, thanks for your code. To give back some contribution to you, I wanted to comment that I used your basic code to gather certain number of samples (instead of using the FIFO) and then apply the FFT.
But using your basic code, to me happened that some data points were corrupted with wrong values (around 10 of 2048 points), even with the if(IIS3DWB_DataReady) .
I've solved the problem using something like:
` for(int i = 0; i < samples; i+=1) {
while(!IIS3DWB_DataReady){}; //this one changes with INT1 IIS3DWB_DataReady = false; IIS3DWBstatus = IIS3DWB.DRstatus(); // read data ready status if (IIS3DWBstatus & 0x01) { // if new accel data is available, read it // Handle data } else{ Serial.println("Data cycle not functioning!"); while(1){}; }}`
I've prefered this direct implementation instead of your FIFO code because using that mode, between each cycle of the watermark stop, 3 values where missing from the begining of each new cycle (I've checked with the timestamp and tag counter values).
Regards,
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felipecookh
Hi Kris, once again, thanks for your code. To give back some contribution to you, I wanted to comment that I used your basic code to gather certain number of samples (instead of using the FIFO) and then apply the FFT.
But using your basic code, to me happened that some data points were corrupted with wrong values (around 10 of 2048 points), even with the if(IIS3DWB_DataReady) .
I've solved the problem using something like:
` for(int i = 0; i < samples; i+=1) {
I've prefered this direct implementation instead of your FIFO code because using that mode, between each cycle of the watermark stop, 3 values where missing from the begining of each new cycle (I've checked with the timestamp and tag counter values).
Regards,