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求好心人提供最新版本固件源码，克隆GitHub上的断流了好多次

# AMG8833 Overlay Demo
#
# This example shows off how to overlay a heatmap onto your OpenMV Cam's
# live video output from the main camera.

import sensor, image, time, fir

ALT_OVERLAY = False # Set to True to allocate a second ir image.

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(time = 2000)

# Initialize the thermal sensor
fir.init(type=fir.FIR_AMG8833)

# Allocate another frame buffer for smoother video.
extra_fb = sensor.alloc_extra_fb(sensor.width(), sensor.height(), sensor.RGB565)

# FPS clock
clock = time.clock()

while (True):
    clock.tick()

    # Capture an image
    img = sensor.snapshot()

    # Capture FIR data
    #   ta: Ambient temperature
    #   ir: Object temperatures (IR array)
    #   to_min: Minimum object temperature
    #   to_max: Maximum object temperature
    ta, ir, to_min, to_max = fir.read_ir()

    if not ALT_OVERLAY:
        # Scale the image and belnd it with the framebuffer
        fir.draw_ir(img, ir)
    else:
        # Create a secondary image and then blend into the frame buffer.
        extra_fb.clear()
        fir.draw_ir(extra_fb, ir, alpha=256)
        img.blend(extra_fb, alpha=128)

    # Draw ambient, min and max temperatures.
    img.draw_string(8, 0, "Ta: %0.2f C" % ta, color = (255, 0, 0), mono_space = False)
    img.draw_string(8, 8, "To min: %0.2f C" % to_min, color = (255, 0, 0), mono_space = False)
    img.draw_string(8, 16, "To max: %0.2f C"% to_max, color = (255, 0, 0), mono_space = False)

    # Force high quality streaming...
    img.compress(quality=90)

    # Print FPS.
    print(clock.fps())

重新加载过程序，也格式化过，都不行，每次上电都会重置main.h

固件是3.3.1

如题，重新上电后又恢复出厂的程序，固件是在IDE中更新最新的3.3.1

我将AMG8833的i2c口对接到OPENMV的P4，P5，

但是运行例程时AMG8833在IDE无数据，程序如下

# AMG8833 Overlay Demo
#
# This example shows off how to overlay a heatmap onto your OpenMV Cam's
# live video output from the main camera.

import sensor, image, time, fir, lcd

ALT_OVERLAY = False # Set to True to allocate a second ir image.

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA2)
sensor.skip_frames(time = 2000)

# Initialize the thermal sensor
fir.init(type=fir.FIR_AMG8833)

# Init the lcd.
lcd.init()

# Allocate another frame buffer for smoother video.
extra_fb = sensor.alloc_extra_fb(sensor.width(), sensor.height(), sensor.RGB565)

# FPS clock
clock = time.clock()

while (True):
    clock.tick()

    # Capture an image
    img = sensor.snapshot()

    # Capture FIR data
    #   ta: Ambient temperature
    #   ir: Object temperatures (IR array)
    #   to_min: Minimum object temperature
    #   to_max: Maximum object temperature
    ta, ir, to_min, to_max = fir.read_ir()

    if not ALT_OVERLAY:
        # Scale the image and belnd it with the framebuffer
        fir.draw_ir(img, ir)
    else:
        # Create a secondary image and then blend into the frame buffer.
        extra_fb.clear()
        fir.draw_ir(extra_fb, ir, alpha=256)
        img.blend(extra_fb, alpha=128)

    # Draw ambient, min and max temperatures.
    img.draw_string(8, 0, "Ta: %0.2f C" % ta, color = (255, 0, 0), mono_space = False)
    img.draw_string(8, 8, "To min: %0.2f C" % to_min, color = (255, 0, 0), mono_space = False)
    img.draw_string(8, 16, "To max: %0.2f C"% to_max, color = (255, 0, 0), mono_space = False)

    lcd.display(img)
    # Force high quality streaming...
    img.compress(quality=90)

    # Print FPS.
    print(clock.fps())

IDE显示如下图，无数据显示

用到一个定时器，一个pwm，出现报错ValueError: Pin(D12) doesn't have an af for Timer(2)

import sensor, image, time
from pyb import Pin, Timer,LED

sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.

RUN = LED(4)
STATUE = LED(1)
tim = Timer(4, prescaler=83,period=370)
#驱动蜂鸣器
def BeepOn():
    tim.channel(1, Timer.PWM, pin=Pin("P7"), pulse_width=187)
#关闭蜂鸣器
def BeepOff():
    tim.channel(1,Timer.PWM, pin=Pin("P7"), pulse_width=0)

def tick(timer):            # we will receive the timer object when being called
    RUN.toggle()
    
tim = Timer(2, freq=1)      # create a timer object using timer 4 - trigger at 1Hz
tim.callback(tick)          # set the callback to our tick function

BeepOn()
while(True):
    img = sensor.snapshot()         # Take a picture and return the image.
                                    # to the IDE. The FPS should increase once disconnected.

之前发现这个问题，但是没得到解决

import sensor, image, time
from pyb import Pin, Timer

sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.

RUN = LED(4)
clock = time.clock()                # Create a clock object to track the FPS.
def tick(timer):            # we will receive the timer object when being called
    RUN.toggle()
    
tim = Timer(4, freq=1)      # create a timer object using timer 4 - trigger at 1Hz
tim.callback(tick)          # set the callback to our tick function


while(True):
    img = sensor.snapshot()         # Take a picture and return the image.
                                    # to the IDE. The FPS should increase once disconnected.

@kidswong999 这个问题无法解决吗？

@kidswong999 发现如果有img = sensor.snapshot() 这句代码，就会出现定时器报错

import sensor, image, time
from pyb import Pin, Timer

sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.
clock = time.clock()                # Create a clock object to track the FPS.

def systick(timer):            # we will receive the timer object when being called
    print("yes")


tim = Timer(2, freq=10)
tim.callback(systick)

while(True):
    clock.tick()                    # Update the FPS clock.
    img = sensor.snapshot()         # Take a picture and return the image.
    print(clock.fps())              # Note: OpenMV Cam runs about half as fast when connected
                                    # to the IDE. The FPS should increase once disconnected.

@kidswong999

import sensor, image, pyb, os,time,utime
from pyb import Pin, Timer, LED

x = 640
y = 180
ROI = (0,300,x,y);

sensor.reset() # Initialize the camera sensor.
sensor.set_contrast(1)
sensor.set_gainceiling(16)
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.VGA)
sensor.set_windowing(ROI)
sensor.skip_frames(time = 1000) # Let new settings take affect.
sensor.set_auto_whitebal(False) # Turn off white balance.


extra_fb = sensor.alloc_extra_fb(x, y, sensor.GRAYSCALE)
extra_fbb = sensor.alloc_extra_fb(x, y, sensor.GRAYSCALE)

extra_fb.replace(sensor.snapshot())
extra_fbb.replace(sensor.snapshot())



def CheckingArea(picture):
    img = sensor.snapshot()
    img.difference(picture)
    stats = img.statistics()
    if (stats[5] > 50):
        return 1
    else:
        return 0

def systick(timer):            # we will receive the timer object when being called
    print("yes")

tim = pyb.Timer(2, freq=10)
tim.callback(systick)
#循环体
while(True):
    CheckingArea(extra_fb)

openmv仅有512k的SRAM，可否在硬件上外置一个SRAM，再修改源代码，扩大RAM？

@kidswong999 您这里发的教程，可以再仔细一点吗

不是，有没有通过修改固件添加模块的教程？