Run UF2 with npm start

README.md

@@ -28,6 +28,15 @@ npm install
 npm start
 ```
 
+You can also specify the path to the image on the command line and/or load an UF2 image:
+
+```sh
+npm run start -- --image ./my-pico-project.uf2
+```
+
+A GDB server will be available on port 3333, and the data written to UART0 will be printed
+to the console.
+
 ### MicroPython code
 
 To run the MicroPython demo, first download [RPI_PICO-20230426-v1.20.0.uf2](https://micropython.org/resources/firmware/RPI_PICO-20230426-v1.20.0.uf2), place it in the rp2040js root directory, then run:

demo/emulator-run.ts

@@ -3,14 +3,37 @@ import { GDBTCPServer } from '../src/gdb/gdb-tcp-server.js';
 import { Simulator } from '../src/simulator.js';
 import { bootromB1 } from './bootrom.js';
 import { loadHex } from './intelhex.js';
+import { loadUF2 } from './load-flash.js';
+import minimist from 'minimist';
+
+const args = minimist(process.argv.slice(2), {
+  string: [
+    'image', // An image to load, hex and UF2 are supported
+  ],
+});
 
-// Create an array with the compiled code of blink
-// Execute the instructions from this array, one by one.
-const hex = fs.readFileSync('hello_uart.hex', 'utf-8');
 const simulator = new Simulator();
 const mcu = simulator.rp2040;
 mcu.loadBootrom(bootromB1);
-loadHex(hex, mcu.flash, 0x10000000);
+
+const imageName = args.image ?? 'hello_uart.hex'
+
+// Check the extension of the file
+const extension = imageName.split('.').pop();
+if (extension === 'hex') {
+  // Create an array with the compiled code of blink
+  // Execute the instructions from this array, one by one.
+  const hex = fs.readFileSync(imageName, 'utf-8');
+
+  console.log(`Loading hex image ${imageName}`);
+  loadHex(hex, mcu.flash, 0x10000000);
+} else if (extension === 'uf2') {
+  console.log(`Loading uf2 image ${imageName}`);
+  loadUF2(imageName, mcu);
+} else {
+  console.log(`Unsupported file type: ${extension}`);
+  process.exit(1);
+}
 
 const gdbServer = new GDBTCPServer(simulator, 3333);
 console.log(`RP2040 GDB Server ready! Listening on port ${gdbServer.port}`);