[BUG] AP Mode fails to read SSID/Password from config file (Error: "SSID can't be empty")

[sprensis]

Description

I am unable to access the Web UI because the board fails to initialize the Access Point (AP) with the configured SSID and password, resulting in the error message "Error: SSID can't be empty" in the Serial Monitor

The board reports that the AP is successfully launched after the error, but the network does not appear with the defined SSID (BW16-WebUI).

Reproduction Steps

1. Hardware: Ai-Thinker BW16-Kit (RTL8720DN).
2. Software: Cloned the main branch of this repository.
3. Configuration: Verified the AP credentials are correctly set in the configuration file:
   • File: WEB_CONFIG_H
   • Content:

     #define WEB_UI_SSID "BW16-WebUI"
     #define WEB_UI_PASSWORD "1234567890"

4. Upload: Compiled and uploaded the sketch using Arduino IDE (with Realtek Ameba Board v3.17) by manually entering Download Mode (BURN + RST).
5. Result: The Serial Monitor shows the error below, and the configured network (BW16-WebUI) does not appear in my Wi-Fi scan list.

Expected Behavior

The board should successfully create a Wi-Fi Access Point with the SSID "BW16-WebUI" and allow connection using the password "1234567890".

Actual Behavior (Serial Output)

The following sequence of messages is repeatedly displayed in the Serial Monitor:

执行初始WiFi扫描...
#calibration_ok:[2:19:11]

=== BW16 WiFi Deauther 启动 ===
初始化LED引脚...
通电蓝灯常亮 - 系统就绪
启动AP模式...
interface 0 is initialized

interface 1 is initialized

Initializing WIFI ...

WIFI initialized

Error: SSID can't be empty

AP模式启动成功
执行初始WiFi扫描...

[sprensis]

BW16 kit*

[FlyingIceyyds]

The "SSID can't be empty" output I encountered during testing is harmless and doesn't affect the program operation. This appears to be caused by modifications to the SDK. May I ask which version you are currently using? You could also test version v2.1 to see if the same issue occurs.

[sprensis]

The "SSID can't be empty" output I encountered during testing is harmless and doesn't affect the program operation. This appears to be caused by modifications to the SDK. May I ask which version you are currently using? You could also test version v2.1 to see if the same issue occurs.

i have tested the v2.1 firmware with the following result:
same error persists, and the Access Point does not launch successfully, meaning the Web UI is still inaccessible.

• Firmware Tested: BW16-Tools v2.1
• SDK Version: Realtek Ameba Boards v3.17
• Serial Output: The error Error: SSID can't be empty is still present, and the "BW16-WebUI" network does not appear.

I have also tried to perform a full flash erase via the Arduino IDE settings before uploading, but this did not resolve the issue.

Given that the AP fails to start, this bug is critical and prevents the program from being used. It seems the hardcoding of the SSID/Password in the header file is not correctly passed to the WiFi.softAP() function, regardless of the firmware version.

I recommend checking how the WiFi.softAP() function is called in the main .ino file to ensure it's receiving a valid const char* or String for the SSID, rather than an empty variable.

[sprensis]

The "SSID can't be empty" output I encountered during testing is harmless and doesn't affect the program operation. This appears to be caused by modifications to the SDK. May I ask which version you are currently using? You could also test version v2.1 to see if the same issue occurs.

i corrected it myself

[sprensis]

new issues:

"No Internet connection" error when connecting to the BW16 network

Web server not opening/accessible

[FlyingIceyyds]

This is a very strange issue. It appears that insufficient hardware resources (such as SRAM overflow) are causing certain functions (like the Web Server, DNS Server, etc.) to fail to start. Most of us here purchased the BW16 Kit through Alibaba in China, and no one has encountered such a problem. I suspect it might be due to minor variations in the production process of the development board, making the program less universally compatible—though this is just speculation. I will later attempt to optimize this issue by reducing resource usage and retesting the related functions. If possible. However, I’m uncertain if it can be fully resolved, as I cannot accurately reproduce the problem.

[FlyingIceyyds]

During the beta testing, I discovered that memory overflow can cause the ssid and pass variables to be forcibly replaced with abnormal content, preventing the AP mode from starting properly. This seems similar to your previous description, so I suspect it might be related. Of course, this is just speculation for now. I will conduct further tests later and attempt to reproduce this issue.

[sprensis]

During the beta testing, I discovered that memory overflow can cause the ssid and pass variables to be forcibly replaced with abnormal content, preventing the AP mode from starting properly. This seems similar to your previous description, so I suspect it might be related. Of course, this is just speculation for now. I will conduct further tests later and attempt to reproduce this issue.

Dear when will you be able to update the project? I'm still waiting for the fix.

[FlyingIceyyds]

I was unable to reproduce this issue. I tried replacing it with a new BW16 kit, and it functioned perfectly—the Web UI connected without any problems. I'm unable to investigate this further. Perhaps you could try replacing your BW16 kit with a 4MB Flash version and choose a relatively reliable supplier. Additionally, this project has been scheduled for archiving. If there are any updates, feel free to contact us via email at ceo@xxidc.top.