esp32 esp8266 exception decoder shorts

certainly! the esp32 and esp8266 are popular microcontroller platforms used for iot projects. when programming these devices using the arduino ide or similar environments, you may encounter exceptions or errors that can be difficult to debug. this is where the exception decoder tool comes in handy.

what is exception decoder?

the exception decoder is a tool that helps you decode crash dumps generated by the esp32 and esp8266 when they encounter an exception or a fault. by analyzing the crash logs, you can identify the source of the problem in your code, making it easier to fix bugs or issues.

common exceptions

1. **guru meditation error**: a fatal error indicating that the cpu has encountered an issue.
2. **loadprohibited**: trying to read from an invalid memory address.
3. **storeprohibited**: trying to write to an invalid memory address.
4. **illegal instruction**: the cpu has encountered an invalid instruction.

setup

to use the exception decoder, you need to follow these steps:

1. **install the esp32/esp8266 board in arduino ide**:
- open arduino ide.
- go to `file` - `preferences`.
- add the following url to the "additional board manager urls" field:
```
```
- go to `tools` - `board` - `boards manager`, search for "esp32" or "esp8266" and install the appropriate board package.

2. **install the exception decoder tool**:
- in arduino ide, go to `sketch` - `include library` - `manage libraries`.
- search for "esp exception decoder" and install it.

example code

here's a simple example code that may cause an exception:

```cpp
include arduino.h

void setup() {
// simulating a crash
int *p = nullptr; // create a null pointer
}

void loop() {
// nothing here
}
```

uploading and generating exception

1. upload the above code to your esp32/esp8266.
2. open the serial m ...

#ESP32 #ESP8266 #numpy
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