PySense 2 Accelerometer sampling rate

[Amaury Basth]

Hello,

Recently purchased a Lopy4 with a Pysense 2 to try to make measurements at 100Hz from the accelerometer included in the Pysense 2.
After several attempts I am stuck at about 26Hz. :(

The Lopy4 is up to date with the latest firmware and I am using the latest version of LIS2HH12.py with "ODR_100_HZ" ON.
On the other hand I can't update the Pysense 2 maybe it comes from there?

Despite the many posts in the forum on the subject I can't find an "clear" answer to this question.

Below is the draft code I use (largely inspired by another post):

import time
import pycom
from pycoproc_1 import Pycoproc
import machine
import utime

from machine import RTC
from LIS2HH12 import LIS2HH12

pycom.heartbeat(False)

py = Pycoproc(Pycoproc.PYSENSE)
li = LIS2HH12(py)

# RTC sync
rtc = RTC()
rtc.init((2021, 7, 23, 16, 10, 0, 0, 0))
utime.sleep_ms(250)
print(rtc.now())

ftime = rtc.now()
datee = str(ftime[2]) + "/" + str(ftime[1]) + "/" + str(ftime[0])

print("Start of recording")
t_end = time.time() + 1
TotalData=[]
while time.time() < t_end:
    dataString = li.acceleration()
    ttime = rtc.now()
    timee = str(ttime[3]) + ":" + str(ttime[4]) + ":" + str(ttime[5]) 
    fullData2 = datee + "," + timee + "," + str(dataString)
    TotalData.append(fullData2)
    print(fullData2)

print("Length of Total Data is : ")
print(len(TotalData))
pycom.rgbled(0x007f00) # green
time.sleep(1)
pycom.rgbled(False)
print("Record is over")```
code_text

Thanks for your help.