set scl freq to 100k; firebeetle v2 did not work with 400k

tomas-fryza · Nov 20, 2024 · 47a7cd4 · 47a7cd4
1 parent f124df4
commit 47a7cd4
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Showing 6 changed files with 6 additions and 6 deletions.
diff --git a/solutions/06-serial/01-i2c_scan.py b/solutions/06-serial/01-i2c_scan.py
@@ -17,7 +17,7 @@
 from machine import Pin
 
 # Init I2C using pins GP22 & GP21 (default I2C0 pins)
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 
 print("Scanning I2C... ", end="")
 addrs = i2c.scan()

diff --git a/solutions/06-serial/02-i2c_rtc.py b/solutions/06-serial/02-i2c_rtc.py
@@ -33,7 +33,7 @@
 led = Led(2)
 led.off()
 
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 addrs = i2c.scan()
 if RTC_ADDR not in addrs:
     raise Exception(f"`{hex(RTC_ADDR)}` is not detected")

diff --git a/solutions/06-serial/02-i2c_sensor.py b/solutions/06-serial/02-i2c_sensor.py
@@ -19,7 +19,7 @@
 SENSOR_ADDR = 0x5c  # DHT12
 
 # Init I2C using pins GP22 & GP21 (default I2C0 pins)
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 
 # Check the sensor
 addrs = i2c.scan()

diff --git a/solutions/06-serial/02-i2c_sensor_bme280.py b/solutions/06-serial/02-i2c_sensor_bme280.py
@@ -19,7 +19,7 @@
 import bme280
 
 # Init BME280 sensor
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 bme = bme280.BME280(i2c=i2c)
 
 print(f"I2C configuration : {str(i2c)}")

diff --git a/solutions/06-serial/03-i2c_oled.py b/solutions/06-serial/03-i2c_oled.py
@@ -20,7 +20,7 @@
 from sh1106 import SH1106_I2C
 
 # Init I2C using pins GP22 & GP21 (default I2C0 pins)
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 print(f"I2C configuration : {str(i2c)}")
 
 # Init OLED display

diff --git a/solutions/06-serial/04-i2c_sensor_oled.py b/solutions/06-serial/04-i2c_sensor_oled.py
@@ -21,7 +21,7 @@
 from sh1106 import SH1106_I2C
 
 # Init DHT12 sensor
-i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400_000)
+i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=100_000)
 sensor = dht12.DHT12(i2c)
 
 # Init OLED display