Summary: Add the Cross compilation Script for RPi (4 & 5) for Linux host machine

examples/rpi/pico2/README.md → examples/raspberry_pi/pico2/README.md

@@ -2,8 +2,10 @@
 This document outlines the steps required to run a simple Add Module on the Pico2 microcontroller using executorch.
 
 ## (Pre-requisistes) Prepare the Environment for Arm
-1. See <a href="https://docs.pytorch.org/executorch/main/tutorial-arm.html#set-up-the-developer-environment"/> for instructions on setting up the environment for Arm.
+
+1. Setup executorch development environment, Also see  <a href="https://docs.pytorch.org/executorch/main/tutorial-arm-ethos-u.html#software"/> for instructions on setting up the environment for Arm.
 2. Make sure you have the toolchain configured correctly.
+
 ```bash
 which arm-none-eabi-gcc
 --> return something like executorch/examples/arm/ethos-u-scratch/arm-gnu-toolchain-13.3.rel1-x86_64-arm-none-eabi/bin/arm-none-eabi-gcc
@@ -22,9 +24,11 @@ executorch/examples/rpi/build_firmware_pico.sh --model=<path_to_model.pte>
 ```
 
 ### Flash Firmware
+
 Hold the BOOTSEL button on the Pico2 and connect it to your computer; it will mount as RPI-RP2. Copy the executorch_pico.uf2 file to this drive.
 
 ### Verify Execution
+
 Check that the Pico2's LED blinks 10 times at 500 ms interval to confirm successful firmware execution.
 The Pico2's LED should blink 10 times at 500 ms intervals, indicating successful firmware execution. If connected via serial, you should see:
 
@@ -34,7 +38,9 @@ Output: 13.000000, 136.000000, 24.000000, 131.000000
 ```
 
 ### Debugging via Serial Terminal
+
 On macOS or Linux, open a serial terminal with:
+
 ```bash
 screen /dev/tty.usbmodem1101 115200
 ```