This article aims to compare the ESP32-WROOM-32 and ESP32-WROVER modules, exploring their differences and potential causes of panic experienced by the former module.

The issue under investigation involves the occurrence of a Guru Meditation Error (Core1 paniced – LoadProhibited) when running ESP8266 apps converted to the 32-bit ESP32-WROOM-32 chips. In contrast, the ESP32-WROVER chips exhibit stable performance.

The problem may stem from memory management or a race condition. To address this, the suggestion is to create a new task with lower priority or allocate it to core 1.

Notably, the ESP32-WROVER module differs from the WROOM module due to its integration of 8 MB SPI PSRAM, while the WROOM module offers two additional GPIOs.

Additionally, the article highlights the significance of utilizing correct libraries and considering the versions of ESP32 modules.

By examining these aspects, this article aims to provide insights into the key distinguishing features and potential solutions for the ESP32-WROOM-32 and ESP32-WROVER modules.

Comparison of Modules

The comparison between the ESP32-WROOM-32 and ESP32-WROVER modules involves examining their specifications and features.

The ESP32-WROOM-32 module is a widely used module that is commonly found in development boards. It offers a compact form factor and includes a dual-core processor, 4 MB flash memory, and various peripheral interfaces.

On the other hand, the ESP32-WROVER module includes all the features of the WROOM module but also integrates 8 MB SPI PSRAM, which provides additional memory for more demanding applications.

Additionally, the WROOM module has two additional GPIOs compared to the WROVER module.

Overall, the choice between these modules depends on the specific requirements of the project in terms of memory capacity and GPIO availability.

Possible Causes of Panic

Possible causes of panic in the ESP32-WROOM-32 and ESP32-WROVER modules include:

• Issues related to memory management: If the code exceeds the available memory resources, crashes can occur.

• Race conditions: When multiple tasks or threads access shared resources simultaneously, unexpected behavior and crashes can happen.

• Incorrect library usage: Using outdated or incompatible libraries can cause instability and panics.

• Blocking of the main task in the loop function: When the main task is blocked, other tasks cannot execute, leading to panics.

These potential causes should be investigated and addressed to ensure stable and reliable operation of the ESP32-WROOM-32 and ESP32-WROVER modules.

Solutions and Recommendations

To address the issues causing panic in the ESP32 modules, it is recommended to implement solutions such as:

• Optimizing memory usage
• Resolving race conditions
• Ensuring the correct usage of libraries
• Avoiding blocking the main task in the loop function

These steps can help improve the stability and performance of the ESP32-WROOM-32 and ESP32-WROVER chips.

Additionally, it is important to:

• Carefully check and configure the platform.ini file
• Verify that the correct versions of libraries are being used

Creating a new task with lower priority or assigning it to core 1 can also help alleviate the panic issues.

By implementing these solutions and recommendations, it is possible to mitigate the problems and ensure the proper functioning of the ESP32 modules.