Release 1.4.1 - Fix backlight flicker

brickbots · May 22, 2023 · c1a3666 · c1a3666
2 parents 77395f0 + 6e3ea9f
commit c1a3666
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Showing 7 changed files with 13 additions and 12 deletions.
diff --git a/gerbers/PiFinder-top-plate.zip b/gerbers/PiFinder-top-plate.zip
diff --git a/gerbers/PiFinder.zip b/gerbers/PiFinder.zip
diff --git a/images/ui_reference.png b/images/ui_reference.png
diff --git a/pifinder_post_update.sh b/pifinder_post_update.sh
@@ -1,4 +1,5 @@
 sudo apt install -y gpsd
 sudo dpkg-reconfigure -plow gpsd
+sudo sed -zi '/dtoverlay=pwm,pin=13,func=4\n/!s/$/\ndtoverlay=pwm,pin=13,func=4\n/' /boot/config.txt
 echo "Post Update Complete"
 
diff --git a/pifinder_setup.sh b/pifinder_setup.sh
@@ -36,6 +36,7 @@ git clone https://github.com/esa/tetra3.git
 echo "dtparam=spi=on" | sudo tee -a /boot/config.txt
 echo "dtparam=i2c_arm=on" | sudo tee -a /boot/config.txt
 echo "dtparam=i2c_arm_baudrate=10000" | sudo tee -a /boot/config.txt
+echo "dtoverlay=pwm,pin=13,func=4" | sudo tee -a /boot/config.txt
 
 # Enable service
 sudo cp /home/pifinder/PiFinder/pifinder.service /etc/systemd/system/pifinder.service

diff --git a/python/PiFinder/main.py b/python/PiFinder/main.py
@@ -22,7 +22,7 @@
 from multiprocessing.managers import BaseManager
 from timezonefinder import TimezoneFinder
 
-import RPi.GPIO as GPIO
+from rpi_hardware_pwm import HardwarePWM
 
 from luma.core.interface.serial import spi
 from luma.core.render import canvas
@@ -55,9 +55,7 @@
 
 
 KEYPAD_LEDPIN = 13
-GPIO.setmode(GPIO.BCM)
-GPIO.setup(KEYPAD_LEDPIN, GPIO.OUT)
-keypad_pwm = GPIO.PWM(KEYPAD_LEDPIN, 100)  # create PWM instance with frequency
+keypad_pwm = HardwarePWM(pwm_channel=1, hz=120)
 keypad_pwm.start(0)
 
 
@@ -80,7 +78,7 @@ def set_brightness(level, cfg):
         "Off": 0,
     }
     keypad_brightness = cfg.get_option("keypad_brightness")
-    keypad_pwm.ChangeDutyCycle(level * 0.1 * keypad_offsets[keypad_brightness])
+    keypad_pwm.change_duty_cycle(level * 0.05 * keypad_offsets[keypad_brightness])
 
 
 class StateManager(BaseManager):

diff --git a/requirements.txt b/requirements.txt
@@ -1,13 +1,14 @@
+adafruit-blinka==8.12.0
+adafruit-circuitpython-bno055
+luma.oled==3.9.0
 numpy==1.23.4
+pandas==1.5.3
 pytz==2022.7.1
-timezonefinder==6.1.9
-luma.oled==3.9.0
-skyfield==1.45
+requests==2.28.2
+rpi-hardware-pwm==0.1.4
 scipy==1.10.0
 scikit-learn==1.2.2
-requests==2.28.2
-adafruit-blinka==8.12.0
-adafruit-circuitpython-bno055
-pandas==1.5.3
 sh==1.14.3
+skyfield==1.45
+timezonefinder==6.1.9
 tqdm==4.65.0