Correct config sizes for read/write old config

noahm · Apr 16, 2024 · da37854 · da37854
1 parent feb0e7e
commit da37854
Showing 1 changed file with 14 additions and 2 deletions.
diff --git a/sdk/commands/config.ts b/sdk/commands/config.ts
@@ -343,6 +343,7 @@ const OLD_CONFIG_INIT = [
 export class SMXConfig {
   public config: Decoded<typeof smx_config_t>;
   private oldConfig: Decoded<typeof smx_old_config_t> | null = null;
+  private oldConfigSize: number | null = null;
   private firmwareVersion: number;
 
   /**
@@ -356,8 +357,12 @@ export class SMXConfig {
     if (this.firmwareVersion >= 5) {
       this.config = smx_config_t.decode(data.slice(2, -1), true);
     } else {
+      this.oldConfigSize = data[1];
       console.log("Reading Old Config");
-      this.oldConfig = smx_old_config_t.decode(data.slice(2, -1), true);
+
+      const slicedData = data.slice(2, -1);
+      const oldData = Uint8Array.from({ length: 250 }, (_, i) => slicedData[i] ?? 0);
+      this.oldConfig = smx_old_config_t.decode(oldData, true);
       this.config = this.convertOldToNew(this.oldConfig);
     }
   }
@@ -370,7 +375,14 @@ export class SMXConfig {
     if (!this.oldConfig) throw new ReferenceError("Can not encode old config as it is null");
     console.log("Writing Old Config");
     this.convertNewToOld();
-    return Array.from(new Uint8Array(smx_old_config_t.encode(this.oldConfig, true).buffer));
+
+    const encodedConfig = smx_old_config_t.encode(this.oldConfig, true);
+    // If the old config data is less than 128 Bytes, only send the first 128 bytes
+    if (this.oldConfigSize && this.oldConfigSize <= 128) {
+      return Array.from(new Uint8Array(encodedConfig.buffer.slice(0, 128)));
+    }
+
+    return Array.from(new Uint8Array(encodedConfig.buffer));
   }
 
   /**