Merge pull request #14 from adafruit/seesawify

Seesawify & add a re-awb resetter
adafruit · Mar 23, 2022 · fbb0481 · fbb0481
2 parents 5079b56 + 171db33
commit fbb0481
Showing 1 changed file with 198 additions and 21 deletions.
diff --git a/adafruit_ov5640.py b/adafruit_ov5640.py
@@ -30,13 +30,13 @@
 import time
 import imagecapture
 import pwmio
-import digitalio
 from adafruit_bus_device.i2c_device import I2CDevice
 
 try:
     from typing import Optional, Sequence, List, Union
     from busio import I2C
     from microcontroller import Pin
+    from digitalio import DigitalInOut
 except ImportError:
     pass
 
@@ -51,6 +51,37 @@
 OV5640_COLOR_JPEG = 3
 
 # fmt: off
+
+_SYSTEM_RESET00 = const(0x3000) # Reset for Individual Block
+# (0: enable block; 1: reset block)
+# Bit[7]: Reset BIST
+# Bit[6]: Reset MCU program memory
+# Bit[5]: Reset MCU
+# Bit[4]: Reset OTP
+# Bit[3]: Reset STB
+# Bit[2]: Reset d5060
+# Bit[1]: Reset timing control
+# Bit[0]: Reset array control
+
+_SYSTEM_RESET02 = const(0x3002) # Reset for Individual Block
+# (0: enable block; 1: reset block)
+# Bit[7]: Reset VFIFO
+# Bit[5]: Reset format
+# Bit[4]: Reset JFIFO
+# Bit[3]: Reset SFIFO
+# Bit[2]: Reset JPG
+# Bit[1]: Reset format MUX
+# Bit[0]: Reset average
+
+_CLOCK_ENABLE02 = const(0x3006) # Clock Enable Control
+# (0: disable clock; 1: enable clock)
+# Bit[7]: Enable PSRAM clock
+# Bit[6]: Enable FMT clock
+# Bit[5]: Enable JPEG 2x clock
+# Bit[3]: Enable JPEG clock
+# Bit[1]: Enable format MUX clock
+# Bit[0]: Enable average clock
+
 _SYSTEM_CTROL0 = const(0x3008)
 # Bit[7]: Software reset
 # Bit[6]: Software power down
@@ -397,11 +428,11 @@
     0x4713, 0x02,  # jpg mode select
     _ISP_CONTROL_01, 0x83,  # turn color matrix, awb and SDE
     # sys reset
-    0x3000, 0x00,
-    0x3002, 0x1C,
+    _SYSTEM_RESET00, 0x00, # enable all blocks
+    _SYSTEM_RESET02, 0x1C, # reset jfifo, sfifo, jpg, fmux, avg
     # clock enable
     0x3004, 0xFF,
-    0x3006, 0xC3,
+    _CLOCK_ENABLE02, 0xC3,
     # isp control
     0x5000, 0xA7,
     _ISP_CONTROL_01, 0xA3,  # +scaling?
@@ -537,14 +568,156 @@
     0x3008, 0x02,
     # 50Hz
     0x3C00, 0x04,
-    _REG_DLY, 300,
+    #_REG_DLY, 300,
 ]
 
+
+
+_reset_awb = [
+    _ISP_CONTROL_01, 0x83,  # turn color matrix, awb and SDE
+    # sys reset
+    _SYSTEM_RESET00, 0x00, # enable all blocks
+    _SYSTEM_RESET02, 0x1C, # reset jfifo, sfifo, jpg, fmux, avg
+    # clock enable
+    #0x3004, 0xFF,
+    #_CLOCK_ENABLE02, 0xC3,
+    # isp control
+    0x5000, 0xA7,
+    _ISP_CONTROL_01, 0xA3,  # +scaling?
+    0x5003, 0x08,  # special_effect
+    # unknown
+    0x370C, 0x02,  #!!IMPORTANT
+    0x3634, 0x40,  #!!IMPORTANT
+    # AEC/AGC
+    0x3A02, 0x03,
+    0x3A03, 0xD8,
+    0x3A08, 0x01,
+    0x3A09, 0x27,
+    0x3A0A, 0x00,
+    0x3A0B, 0xF6,
+    0x3A0D, 0x04,
+    0x3A0E, 0x03,
+    0x3A0F, 0x30,  # ae_level
+    0x3A10, 0x28,  # ae_level
+    0x3A11, 0x60,  # ae_level
+    0x3A13, 0x43,
+    0x3A14, 0x03,
+    0x3A15, 0xD8,
+    0x3A18, 0x00,  # gainceiling
+    0x3A19, 0xF8,  # gainceiling
+    0x3A1B, 0x30,  # ae_level
+    0x3A1E, 0x26,  # ae_level
+    0x3A1F, 0x14,  # ae_level
+    # vcm debug
+    0x3600, 0x08,
+    0x3601, 0x33,
+    # 50/60Hz
+    0x3C01, 0xA4,
+    0x3C04, 0x28,
+    0x3C05, 0x98,
+    0x3C06, 0x00,
+    0x3C07, 0x08,
+    0x3C08, 0x00,
+    0x3C09, 0x1C,
+    0x3C0A, 0x9C,
+    0x3C0B, 0x40,
+    0x460C, 0x22,  # disable jpeg footer
+    # BLC
+    0x4001, 0x02,
+    0x4004, 0x02,
+    # AWB
+    0x5180, 0xFF,
+    0x5181, 0xF2,
+    0x5182, 0x00,
+    0x5183, 0x14,
+    0x5184, 0x25,
+    0x5185, 0x24,
+    0x5186, 0x09,
+    0x5187, 0x09,
+    0x5188, 0x09,
+    0x5189, 0x75,
+    0x518A, 0x54,
+    0x518B, 0xE0,
+    0x518C, 0xB2,
+    0x518D, 0x42,
+    0x518E, 0x3D,
+    0x518F, 0x56,
+    0x5190, 0x46,
+    0x5191, 0xF8,
+    0x5192, 0x04,
+    0x5193, 0x70,
+    0x5194, 0xF0,
+    0x5195, 0xF0,
+    0x5196, 0x03,
+    0x5197, 0x01,
+    0x5198, 0x04,
+    0x5199, 0x12,
+    0x519A, 0x04,
+    0x519B, 0x00,
+    0x519C, 0x06,
+    0x519D, 0x82,
+    0x519E, 0x38,
+    # color matrix (Saturation)
+    0x5381, 0x1E,
+    0x5382, 0x5B,
+    0x5383, 0x08,
+    0x5384, 0x0A,
+    0x5385, 0x7E,
+    0x5386, 0x88,
+    0x5387, 0x7C,
+    0x5388, 0x6C,
+    0x5389, 0x10,
+    0x538A, 0x01,
+    0x538B, 0x98,
+    # CIP control (Sharpness)
+    0x5300, 0x10,  # sharpness
+    0x5301, 0x10,  # sharpness
+    0x5302, 0x18,  # sharpness
+    0x5303, 0x19,  # sharpness
+    0x5304, 0x10,
+    0x5305, 0x10,
+    0x5306, 0x08,  # denoise
+    0x5307, 0x16,
+    0x5308, 0x40,
+    0x5309, 0x10,  # sharpness
+    0x530A, 0x10,  # sharpness
+    0x530B, 0x04,  # sharpness
+    0x530C, 0x06,  # sharpness
+    # GAMMA
+    0x5480, 0x01,
+    0x5481, 0x00,
+    0x5482, 0x1E,
+    0x5483, 0x3B,
+    0x5484, 0x58,
+    0x5485, 0x66,
+    0x5486, 0x71,
+    0x5487, 0x7D,
+    0x5488, 0x83,
+    0x5489, 0x8F,
+    0x548A, 0x98,
+    0x548B, 0xA6,
+    0x548C, 0xB8,
+    0x548D, 0xCA,
+    0x548E, 0xD7,
+    0x548F, 0xE3,
+    0x5490, 0x1D,
+    # Special Digital Effects (SDE) (UV adjust)
+    0x5580, 0x06,  # enable brightness and contrast
+    0x5583, 0x40,  # special_effect
+    0x5584, 0x10,  # special_effect
+    0x5586, 0x20,  # contrast
+    0x5587, 0x00,  # brightness
+    0x5588, 0x00,  # brightness
+    0x5589, 0x10,
+    0x558A, 0x00,
+    0x558B, 0xF8,
+    0x501D, 0x40,  # enable manual offset of contrast
+]
 _sensor_format_jpeg = [
     _FORMAT_CTRL, 0x00,  # YUV422
     _FORMAT_CTRL00, 0x30,  # YUYV
-    0x3002, 0x00,  # 0x1c to 0x00 !!!
-    0x3006, 0xFF,  # 0xc3 to 0xff !!!
+    _SYSTEM_RESET02, 0x00,  # enable everything
+    _CLOCK_ENABLE02, 0xFF,  # enable all clocks
     0x471C, 0x50,  # 0xd0 to 0x50 !!!
 ]
 
@@ -566,6 +739,9 @@
 _sensor_format_rgb565 = [
     _FORMAT_CTRL, 0x01,  # RGB
     _FORMAT_CTRL00, 0x61,  # RGB565 (BGR)
+    _SYSTEM_RESET02, 0x1C, # reset jfifo, sfifo, jpg, fmux, avg
+    _CLOCK_ENABLE02, 0xC3, # reset to how it was before (no jpg clock)
+
 ]
 
 _ov5640_color_settings = {
@@ -822,8 +998,8 @@ def __init__(
         clock: Pin,
         vsync: Pin,
         href: Pin,
-        shutdown: Optional[Pin] = None,
-        reset: Optional[Pin] = None,
+        shutdown: Optional[DigitalInOut] = None,
+        reset: Optional[DigitalInOut] = None,
         mclk: Optional[Pin] = None,
         mclk_frequency: int = 20_000_000,
         i2c_address: int = 0x3C,
@@ -837,9 +1013,9 @@ def __init__(
             vsync (microcontroller.Pin): The vsync signal from the OV5640.
             href (microcontroller.Pin): The href signal from the OV5640, \
                 sometimes inaccurately called hsync.
-            shutdown (Optional[microcontroller.Pin]): If not None, the shutdown
+            shutdown (Optional[digitalio.DigitalInOut]): If not None, the shutdown
                 signal to the camera, also called the powerdown or enable pin.
-            reset (Optional[microcontroller.Pin]): If not None, the reset signal
+            reset (Optional[digitalio.DigitalInOut]): If not None, the reset signal
                 to the camera.
             mclk (Optional[microcontroller.Pin]): The pin on which to create a
                 master clock signal, or None if the master clock signal is
@@ -861,23 +1037,24 @@ def __init__(
         else:
             self._mclk_pwm = None
 
+        if reset:
+            self._reset = reset
+            self._reset.switch_to_output(False)
+        else:
+            self._reset = None
+
         if shutdown:
-            self._shutdown = digitalio.DigitalInOut(shutdown)
+            self._shutdown = shutdown
             self._shutdown.switch_to_output(True)
-            time.sleep(0.1)
+            time.sleep(0.005)  # t2, 5ms stability
             self._shutdown.switch_to_output(False)
-            time.sleep(0.3)
         else:
             self._shutdown = None
 
-        if reset:
-            self._reset = digitalio.DigitalInOut(reset)
-            self._reset.switch_to_output(False)
-            time.sleep(0.1)
+        if self._reset:
+            time.sleep(0.001)  # t3, 1ms delay from pwdn
             self._reset.switch_to_output(True)
-            time.sleep(0.1)
-        else:
-            self._reset = None
+            time.sleep(0.02)
 
         # Now that the master clock is running, we can initialize i2c comms
         super().__init__(i2c_bus, i2c_address)