@@ -71,29 +71,4 @@ def catch_escape_key(indev, indev_data):
7171# print(f"boot_unix: code={event_code}") # target={event.get_target()}, user_data={event.get_user_data()}, param={event.get_param()}
7272#keyboard.add_event_cb(keyboard_cb, lv.EVENT.ALL, None)
7373
74- # On the Waveshare ESP32-S3-Touch-LCD-2, the camera is hard-wired to power on,
75- # so it needs a software power off to prevent it from staying hot all the time and quickly draining the battery.
76- # 1) Initialize camera, otherwise it doesn't reply to I2C commands:
77- try :
78- from camera import Camera
79- cam = Camera (data_pins = [12 ,13 ,15 ,11 ,14 ,10 ,7 ,2 ],vsync_pin = 6 ,href_pin = 4 ,sda_pin = 21 ,scl_pin = 16 ,pclk_pin = 9 ,xclk_pin = 8 ,xclk_freq = 20000000 ,powerdown_pin = - 1 ,reset_pin = - 1 ,pixel_format = PixelFormat .RGB565 ,frame_size = FrameSize .R240X240 ,grab_mode = GrabMode .LATEST )
80- cam .deinit ()
81- except Exception as e :
82- print (f"camera init for power off got exception:{ e } )
83- # 2) Soft-power off camera, otherwise it uses a lot of current for nothing:
84- try :
85- from machine import Pin ,I2C
86- i2c = I2C (1 ,scl = Pin (16 ),sda = Pin (21 ))# Adjust pins and frequency
87- devices = i2c .scan ()
88- print ("Scan of I2C bus on scl=16, sda=21:" )
89- print ([hex (addr )for addr in devices ])# finds it on 60 = 0x3C after init
90- camera_addr = 0x3C # for OV5640
91- reg_addr = 0x3008
92- reg_high = (reg_addr >> 8 )& 0xFF # 0x30
93- reg_low = reg_addr & 0xFF # 0x08
94- power_off_command = 0x42 # Power off command
95- i2c .writeto (camera_addr ,bytes ([reg_high ,reg_low ,power_off_command ]))
96- except Exception as e :
97- print (f"Warning: powering off camera got exception:{ e } )
98-
9974print ("boot_unix.py finished" )