嵌入式物联网实战开发例程19-ESP32驱动OV2640和OV5640摄像头camera（MicroPythion版例程）

""" ****************************************************************************** * @file main.py * @author * @version V1.0 * @date 2023-12-01 * @brief 摄像头实验 ****************************************************************************** * * 实验目的：如何驱动OV2640和OV5640摄像头模块 * * 硬件资源及引脚分配： * 1, LED --> ESP32S3 IO * LED --> IO1 * 2, XL9555 --> ESP32S3 IO * SCL --> IO42 * SDA --> IO41 * INT --> IO0(跳线帽连接) * 3, SPI_LCD --> ESP32S3 IO / XL9555 * CS --> IO21 * SCK --> IO12 * SDA --> IO11 * DC --> IO40(跳线帽连接) * PWR --> XL9555_P13 * RST --> XL9555_P12 * 4, CAMERA --> ESP32S3 IO / XL9555 * OV_SCL --> 38 * OV_SDA --> 39 * VSYNC --> 47 * HREF --> 48 * PCLK --> 45 * D0 --> 4 * D1 --> 5 * D2 --> 6 * D3 --> 7 * D4 --> 15 * D5 --> 16 * D6 --> 17 * D7 --> 18 * RESET --> XL9535_P05 * PWDN --> XL9535_P04 * * 实验现象 * 1, 本实验代码,开机的时候先初始化XL9555IO扩展芯片，然后复位并开启摄像头，接着对摄像头及LCD进行初始化，最后调用函数显示摄像头数据到LCD显示屏上。 * * 注意事项 * 无 * * 定制开发，技术V:349014857 * 更多例程：https://iot666.blog.csdn.net/ * 开发咨询：http://doc.yotill.com """ import time import camera import atk_xl9555 as io_ex import atk_lcd as lcd from machine import Pin,SPI,I2C """ * @brief 程序入口 * @param 无 * @retval 无 """ if __name__ == '__main__': # IIC初始化 i2c0 = I2C(0, scl = Pin(42), sda = Pin(41), freq = 400000) # XL9555初始化 xl9555 = io_ex.init(i2c0) xl9555.write_bit(io_ex.BEEP,1) # 复位摄像头 xl9555.write_bit(io_ex.OV_RESET,0) time.sleep_ms(100) xl9555.write_bit(io_ex.OV_RESET,1) time.sleep_ms(100) # 开启摄像头 xl9555.write_bit(io_ex.OV_PWDN,1) time.sleep_ms(100) xl9555.write_bit(io_ex.OV_PWDN,0) time.sleep_ms(100) # 给复位留时间 time.sleep_ms(1000) # 初始化摄像头 for i in range(5): cam = camera.init(0, format=camera.RGB565, fb_location=camera.PSRAM,framesize = camera.FRAME_240X240,xclk_freq = 24000000) print("Camera ready?: ", cam) if cam: print("Camera ready") break else: camera.deinit() camera.init(0, format=camera.RGB565, fb_location=camera.PSRAM,framesize = camera.FRAME_240X240,xclk_freq = 24000000) time.sleep(2) else: print('Timeout') reset() # 复位LCD xl9555.write_bit(io_ex.SLCD_RST,0) time.sleep_ms(100) xl9555.write_bit(io_ex.SLCD_RST,1) time.sleep_ms(100) # 初始化SPI spi = SPI(2,baudrate = 80000000, sck = Pin(12), mosi = Pin(11), miso = Pin(13)) # 初始化LCD,lcd = 0为####2.4寸屏幕;lcd = 1为####1.3寸SPILCD屏幕; display = lcd.init(spi,dc = Pin(40,Pin.OUT,Pin.PULL_UP,value = 1),cs = Pin(21,Pin.OUT,Pin.PULL_UP,value = 1),dir = 1,lcd = 0) # 开启背光 xl9555.write_bit(io_ex.SLCD_PWR,1) time.sleep_ms(100) display.camera(42,5)