feat: kboot package (#894)

* feat: kboot package * feat: kboot package * fix: wait 1 sec after device is available * test: fix unit test * refactor: clean unused codes * doc: improve readme.md * doc: improve readme.md * test: fix unit test * chore: fix lint settings * style: fix linting issues
2019-01-18 17:37:31 +01:00
parent bfc08edfce
commit 3964698cf7
53 changed files with 1784 additions and 249 deletions
--- a/packages/kboot/src/util/usb/encode-command-option.ts
+++ b/packages/kboot/src/util/usb/encode-command-option.ts
@@ -0,0 +1,46 @@
+import { isNullOrUndefined } from 'util';
+import { pack } from 'byte-data';
+
+import { CommandOption } from '../../models';
+
+/**
+ * Encode the USB Command.
+ * @param option
+ */
+export const encodeCommandOption = (option: CommandOption): number[] => {
+    const payload = [
+        option.command,
+        option.hasDataPhase ? 1 : 0,
+        0, // Reserved. Should be 0
+        option.params ? option.params.length / 4 >> 0 : 0 // number of parameters
+    ];
+
+    if (option.params) {
+        payload.push(...option.params);
+    }
+
+    const header = [
+        1, // Communication channel
+        0, // TODO: What is it?
+        ...pack(payload.length, { bits: 16 }) // payload length in 2 byte
+    ];
+
+    const placeholders = new Array(32 - payload.length)
+        .fill(0);
+
+    return [...header, ...payload, ...placeholders];
+};
+
+export const validateCommandParams = (params: any[]): void => {
+    if (isNullOrUndefined(params)) {
+        return;
+    }
+
+    if (!Array.isArray(params)) {
+        throw new Error('Command parameters must be an array!');
+    }
+
+    if (params.length > 28) {
+        throw new Error('Maximum 7 (28 bytes) command parameters allowed!');
+    }
+};