ESP8266 Community Forum

- Wed Mar 22, 2017 5:47 pm #64113 Hi, I'm new to the ESP8266, but not new to embedded in general. I picked up an ESP-12E with NodeMCU already installed. I don't know the version, but it is supposed to be current.

I'm using macos and I got the driver installed so I can communicate with NodeMCU using ESPlorer.

At first I tried setting the baud to 9600 like many of the examples and the board itself suggest, but I seen discovered that I don't get anything but junk back over the serial port unless I set it to 115200. Some Google search showed a forum post here that says that is the new normal.

DTR, CTS and RTS are all dim... Open is green.

I don't get anything back about the firmware version etc., but when I release the RST button I get:

Code: Select allCan't autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.
l$ܞ|�$�|�$�p�{����{���b��no�loN���bp��#$`{lp�N��lBo�|dl��p��oN�d��$`�2nol or������l`p�o�r�ܜ��"o��o䎟��p��oN�l �2nol Nr�����l`p�o�r�ܜ��$"o��o$���c��oN�l �Nn$`or���N�l$`r��N�l$`{l��n���oN����roNn�l�br{l�d�l�ے����ld$s$���ldN����#�l$�����N��N�n��$l��b�{bo�br���$`nl�p��$`bl l�����|��nl�|Bl$`{l����n�r��n|�ll�{l��{�l�l�$`��r�d���l ��{�l���d$`r$���c��b#l�br|�bp ���Blr�$c��o�noƒ�#��ol�l�������l�d�N���b#l䏄b���"d�bp{l{l
Ai-Thinker Technology Co. Ltd.

ready

The "ready" makes me think that I am good to go, but when I click on "Chip Info" or "Chip ID" all I get back is:

Code: Select allready
=node.info()

ERROR


Any suggestions on how to move forward would be great. Should I flash the firmware? I was able to get esptool.py to recognize the part and determine that the device is 4016, etc.

Is it possible that it is stuck in flash mode? I tried booting the part with GPIO0 (D3) tied to 3V3 but I get the same behavior.

Thanks,

Chris

- Thu Mar 23, 2017 6:19 am #64129 In my opinion in your module are only AT commands. Lua is missing there. You must first install Lua firmware.

https://nodemcu.readthedocs.io/en/master/en/flash/

- Fri Mar 24, 2017 10:13 am #64175 Thanks jankop, I guess the boards didn't come with firmware as suggested by the vendor. I flashed with file,gpio,mqtt,net,node,pwm,spi,tmr,uart and wifi and now I am able to communicate with the part using ESPlorer. Chris