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jeelabs / esp-link

esp8266 wifi-serial bridge, outbound TCP, and arduino/AVR/LPC/NXP programmer
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NodeMCU doesn't create AP after flash #510

Closed Technic1975 closed 3 years ago

Technic1975 commented 3 years ago

Hi all,

I am having real trouble flashing an AZDelivery NodeMCU WiFi Lolin V3 ESP8266 ESP-12F with esp-link, I have been trying for days with various settings but I am having no luck, below are the settings I am using as I think they should be.

image

After flashing and restarting the AP only shows now and again on my tablet and on inspection of the serial data the nodeMCU just keeps resetting as shown below

image

When I first flashed this module it appeared to work and I was able to log in at 192.168.4.1 and connect to my router but it has never worked since, I have erased and reflashed with different setting 100's of times but I just cannot get it to work.

Please could someone shed some light as to what the problem is, I think it is linked to this line 129> Flash config restore FAILED but I am pretty sure that 171> Flash map 4MB:1024/1024, manuf 0x68 chip 0x4016 are the correct settings for this board.

Kind regards

Jason

Technic1975 commented 3 years ago

Well I have a further development, although the AP never shows, I have discovered that if I erase the module, then flash the hello server sketch with Arduino 1.8.14 with my SSID and password details included, then flash ESP link over the top, minus the Blank.bin file, I am able to connect to ESP link on my pc over my local network with IP 192.168.0.65 and configure as I like.

I updated the firmware to NMEA link and am able to send GPS data as I had planned, the unit still won't set up an AP though if it cant connect to the specified network.

This is really frustrating as I feel I am very close, does anyone have any Ideas?

uzi18 commented 3 years ago

Related to #490

Technic1975 commented 3 years ago

Well I purchased a second module, same results! after a lot of frustration I have found that if I flash these modules very slowly at 9600 Baud rate that they work just fine with all versions of ESP link, very unstable flash chips!