我刚刚刷新了ESP32，它具有用于lua文件的新自定义构建，其设计如下：使用dev-esp32 <> BETA的https://nodemcu-build.com/它似乎正在运行，我可以连接ESPlorer并按照启动代码中的说明安装固件。
我正在尝试切换BUILTIN_LED，但是使用GPIO命令时出现错误。它可以通过简单的arduino代码立即使用，我是否弄乱了东西，或者为什么这不起作用？
这里是来自GPIO.mode命令的具有错误响应的日志
Communication with MCU..Got answer! Communication with MCU established.
AutoDetect firmware...
Can't autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.
ts Jun 8 2016 00:22:57
rst:0x1 (POWERON_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:6716
load:0x40078000,len:11116
ho 0 tail 12 room 4
load:0x40080400,len:5940
entry 0x40080700
[0;32mI (69) boot: Chip Revision: 1[0m
[0;32mI (69) boot_comm: chip revision: 1, min. bootloader chip revision: 0[0m
[0;32mI (41) boot: ESP-IDF v3.3.1 2nd stage bootloader[0m
[0;32mI (41) boot: compile time 17:08:58[0m
[0;32mI (41) boot: Enabling RNG early entropy source...[0m
[0;32mI (46) boot: SPI Speed : 40MHz[0m
[0;32mI (50) boot: SPI Mode : DIO[0m
[0;32mI (54) boot: SPI Flash Size : 4MB[0m
[0;32mI (58) boot: Partition Table:[0m
[0;32mI (61) boot: ## Label Usage Type ST Offset Length[0m
[0;32mI (69) boot: 0 nvs WiFi data 01 02 00009000 00006000[0m
[0;32mI (76) boot: 1 phy_init RF data 01 01 0000f000 00001000[0m
[0;32mI (84) boot: 2 factory factory app 00 00 00010000 00180000[0m
[0;32mI (91) boot: 3 lfs unknown c2 01 00190000 00010000[0m
[0;32mI (99) boot: 4 nodemcuspiffs unknown c2 00 001a0000 00070000[0m
[0;32mI (106) boot: End of partition table[0m
[0;32mI (110) boot_comm: chip revision: 1, min. application chip revision: 0[0m
[0;32mI (118) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x1bdf4 (114164) map[0m
[0;32mI (165) esp_image: segment 1: paddr=0x0002be1c vaddr=0x3ffb0000 size=0x02fcc ( 12236) load[0m
[0;32mI (170) esp_image: segment 2: paddr=0x0002edf0 vaddr=0x40080000 size=0x00400 ( 1024) load[0m
[0;32mI (172) esp_image: segment 3: paddr=0x0002f1f8 vaddr=0x40080400 size=0x00e18 ( 3608) load[0m
[0;32mI (182) esp_image: segment 4: paddr=0x00030018 vaddr=0x400d0018 size=0x84a0c (543244) map[0m
[0;32mI (373) esp_image: segment 5: paddr=0x000b4a2c vaddr=0x40081218 size=0x0f074 ( 61556) load[0m
[0;32mI (398) esp_image: segment 6: paddr=0x000c3aa8 vaddr=0x400c0000 size=0x00064 ( 100) load[0m
[0;32mI (408) boot: Loaded app from partition at offset 0x10000[0m
[0;32mI (408) boot: Disabling RNG early entropy source...[0m
[0;32mI (409) cpu_start: Pro cpu up.[0m
[0;32mI (413) cpu_start: Application information:[0m
[0;32mI (418) cpu_start: Project name: NodeMCU[0m
[0;32mI (423) cpu_start: App version: a8b46af-dirty[0m
[0;32mI (428) cpu_start: Compile time: Apr 15 2020 17:09:01[0m
[0;32mI (434) cpu_start: ELF file SHA256: af54a39e6c0fb11d...[0m
[0;32mI (440) cpu_start: ESP-IDF: v3.3.1[0m
[0;32mI (445) cpu_start: Starting app cpu, entry point is 0x40081244[0m
[0;32mI (0) cpu_start: App cpu up.[0m
[0;32mI (456) heap_init: Initializing. RAM available for dynamic allocation:[0m
[0;32mI (462) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM[0m
[0;32mI (469) heap_init: At 3FFB9260 len 00026DA0 (155 KiB): DRAM[0m
[0;32mI (475) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM[0m
[0;32mI (481) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM[0m
[0;32mI (488) heap_init: At 4009028C len 0000FD74 (63 KiB): IRAM[0m
[0;32mI (494) cpu_start: Pro cpu start user code[0m
[0;32mI (176) cpu_start: Starting scheduler on PRO CPU.[0m
[0;32mI (0) cpu_start: Starting scheduler on APP CPU.[0m
Mounting flash filesystem...
No LFS image loaded
I (337) wifi: wifi driver task: 3ffc26a8, prio:23, stack:3584, core=0
[0;32mI (337) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE[0m
[0;32mI (337) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE[0m
I (367) wifi: wifi firmware version: ac331d7
I (367) wifi: config NVS flash: enabled
I (367) wifi: config nano formating: disabled
I (367) wifi: Init dynamic tx buffer num: 32
I (377) wifi: Init data frame dynamic rx buffer num: 32
I (377) wifi: Init management frame dynamic rx buffer num: 32
I (387) wifi: Init management short buffer num: 32
I (387) wifi: Init static rx buffer size: 1600
I (397) wifi: Init static rx buffer num: 10
I (397) wifi: Init dynamic rx buffer num: 32
NodeMCU ESP32 built on nodemcu-build.com provided by frightanic.com
branch: dev-esp32
commit: a8b46af905b759506e9fd5eabdadbd8beb83e7c2
SSL: false
modules: file,gpio,net,node,tmr,wifi
build 2020-04-15-17-07-08 powered by Lua 5.1.4 on ESP-IDF v3.3.1 on SDK IDF
lua: cannot open init.lua
>
gpio.write(2, LOW)
gpio.write(2, LOW)
stdin:1: bad argument #2 to 'write' (number expected, got nil)
stack traceback:
[C]: in function 'write'
stdin:1: in main chunk
>
根据https://nodemcu.readthedocs.io/en/dev-esp32/modules/gpio/#gpiowrite（和错误消息），第二个参数必须为int； 1或0。
您的代码
gpio.write(2, LOW)
似乎发送nil。您的LOW尚未在任何地方初始化，是吗？绝对应该可以正常工作的是：
LOW = 0
gpio.write(2, LOW)