我是插了sd卡的，插了卡之后每次给openmv供电，都会先闪3下红光，然后亮1下白光，之后就不亮了。这是正常情况吗？

代码如下，感觉应该没啥问题，有可能是硬件问题吗？或者内存？

# Untitled - By: hw - Thu Nov 30 2023

import sensor, image, time, cpufreq
cpufreq.set_frequency(480)  # 决策结束后，设置cpu频率为最低，即低功耗拍照
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)

clock = time.clock()
cpufreq.set_frequency(60)  # 决策结束后，设置cpu频率为最低，即低功耗拍照
with open("record.txt", "a") as f:
    print("\n程序开始执行...\n", file=f)
cou = 0
while(True):
    cou += 1
    time.sleep(1)
    clock.tick()
    img = sensor.snapshot()
    print(clock.fps())
    with open("record.txt", "a") as f:
        print("cou = ", cou, file=f)