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temp: Slow down reports

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Only send a new report every 200ms to hopefully mitigate the serial port
glitches.
This commit is contained in:
Rahix 2025-08-24 03:21:46 +02:00
parent f46e58b4e8
commit 12753d93fb
1 changed files with 8 additions and 2 deletions
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10
Misc/Temp-Monitor/temperature_monitor.py
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@ -1,4 +1,5 @@
import math import math
import time
from cs1237 import CS1237 from cs1237 import CS1237
from machine import Pin from machine import Pin
@ -10,7 +11,7 @@ ADC_RATE = 40
cs1237 = CS1237(clock, data) cs1237 = CS1237(clock, data)
cs1237.config(gain=1, rate=ADC_RATE) cs1237.config(gain=1, rate=ADC_RATE)
print(repr(cs1237.get_config())) cs1237.get_config()
THERMISTOR_BETA = 3950.0 THERMISTOR_BETA = 3950.0
THERMISTOR_R25 = 10e3 THERMISTOR_R25 = 10e3
@ -22,6 +23,7 @@ FILTER_RC = 1
FILTER_A = 1 / ADC_RATE / (FILTER_RC / 1 / ADC_RATE) FILTER_A = 1 / ADC_RATE / (FILTER_RC / 1 / ADC_RATE)
temperature_filtered = 25 temperature_filtered = 25
last_report = time.ticks_ms()
while True: while True:
raw_value = cs1237.read() raw_value = cs1237.read()
value = float(raw_value) / (2**24 - 1) value = float(raw_value) / (2**24 - 1)
@ -37,4 +39,8 @@ while True:
temperature_filtered * (1 - FILTER_A) + temperature * FILTER_A temperature_filtered * (1 - FILTER_A) + temperature * FILTER_A
) )
print(temperature_filtered) now = time.ticks_ms()
elapsed = now - last_report
if elapsed >= 200 or elapsed < 0:
print(f"{temperature_filtered:.6f}")
last_report = now