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micropython.js

@@ -25,6 +25,12 @@ function extract(out) {
   return out.slice(2, -3)
 }
 
+function extractBytes(out, cut_before = 2, cut_after = 3) {
+  bytes = out.slice(cut_before, -cut_after)
+  bytes = bytes.split(',').map(Number)
+  return bytes
+}
+
 class MicroPythonBoard {
   constructor() {
     this.port = null
@@ -250,6 +256,19 @@ class MicroPythonBoard {
     return Promise.resolve(files)
   }
 
+  async fs_cat_binary(filePath) {
+    if (filePath) {
+      await this.enter_raw_repl()
+      let output = await this.exec_raw(
+        `with open('${filePath}','rb') as f:\n while 1:\n  b=f.read(256)\n  if not b:break\n  print(",".join(str(e) for e in b),end=',')`
+      )
+      await this.exit_raw_repl()
+      output = extractBytes(output, 2, 4)
+      return Promise.resolve((output))
+    }
+    return Promise.reject(new Error(`Path to file was not specified`))
+  }
+
   async fs_cat(filePath) {
     if (filePath) {
       await this.enter_raw_repl()

package.json

@@ -1,6 +1,6 @@
 {
   "name": "micropython.js",
-  "version": "1.4.4",
+  "version": "1.5.0",
   "description": "Interpretation of pyboard.py in javascript",
   "main": "micropython.js",
   "scripts": {