!218 add demo/camera/usb_cam_mp4/main.lua.

Merge pull request !218 from 阳仔/N/A

demo/camera/usb_cam_mp4/main.lua

@@ -0,0 +1,101 @@
+
+-- LuaTools需要PROJECT和VERSION这两个信息
+PROJECT = "usb_cam_mp4"
+VERSION = "1.0.0"
+
+-- sys库是标配
+_G.sys = require("sys")
+
+
+-- 特别提醒, 由于FAT32是DOS时代的产物, 文件名超过8个字节是需要额外支持的(需要更大的ROM)
+-- 例如 /sd/boottime 是合法文件名, 而/sd/boot_time就不是合法文件名, 需要启用长文件名支持.
+
+
+local camera_id = camera.USB
+
+local usb_camera_table = {
+    id = camera_id,
+    sensor_width = 1280,
+    sensor_height = 720,
+    usb_port = 1
+}
+
+
+
+local rtos_bsp = rtos.bsp()
+
+-- spi_id,pin_cs
+local function fatfs_spi_pin()
+    if rtos_bsp == "AIR101" then
+        return 0, pin.PB04
+    elseif rtos_bsp == "AIR103" then
+        return 0, pin.PB04
+    elseif rtos_bsp == "AIR105" then
+        return 2, pin.PB03
+    elseif rtos_bsp == "ESP32C3" then
+        return 2, 7
+    elseif rtos_bsp == "ESP32S3" then
+        return 2, 14
+    elseif rtos_bsp == "EC618" then
+        return 0, 8
+    elseif string.find(rtos_bsp,"EC718") then
+        return 0, 8
+    elseif string.find(rtos_bsp,"Air810") then
+        return 0, 3, fatfs.SDIO
+    else
+        log.info("main", "bsp not support")
+        return
+    end
+end
+
+sys.taskInit(function()
+    sys.wait(1000)
+    -- fatfs.debug(1) -- 若挂载失败,可以尝试打开调试信息,查找原因
+
+    -- 此为spi方式
+    local spi_id, pin_cs,tp = fatfs_spi_pin()
+    if tp and tp == fatfs.SPI then
+        -- 仅SPI方式需要自行初始化spi, sdio不需要
+        spi.setup(spi_id, nil, 0, 0, 8, 400 * 1000)
+        gpio.setup(pin_cs, 1)
+    end
+
+      -- lua内存
+    log.info("lua", rtos.meminfo())
+    -- sys内存
+    log.info("sys", rtos.meminfo("sys"))
+
+    fatfs.mount(tp or fatfs.SPI, "/sd", spi_id, pin_cs, 24 * 1000 * 1000)
+
+    local data, err = fatfs.getfree("/sd")
+    if data then
+        log.info("fatfs", "getfree", json.encode(data))
+    else
+        log.info("fatfs", "err", err)
+    end
+
+
+
+    --初始化摄像头
+    result=camera.init(usb_camera_table)
+    log.info("摄像头初始化", result)
+    if(result==0) then
+        camera.start(camera_id)
+        --开始mp4录制
+        camera.capture(camera_id, "/sd/abc.mp4", 1)
+        sys.wait(25000)
+
+        --结束MP4录制
+        camera.stop(camera_id)
+
+        log.info("保存成功")
+    end
+    camera.close(camera_id)
+    -- #################################################
+
+end)
+
+-- 用户代码已结束---------------------------------------------
+-- 结尾总是这一句
+sys.run()
+-- sys.run()之后后面不要加任何语句!!!!!