fix typos, add pre-commit config

Author: hathach

.codespell/exclude-file.txt

@@ -0,0 +1 @@
+ * - https://github.com/torvalds/linux/blob/master/drivers/i2c/busses/i2c-tiny-usb.c

.pre-commit-config.yaml

@@ -0,0 +1,12 @@
+# SPDX-FileCopyrightText: 2020 Diego Elio Pettenò
+#
+# SPDX-License-Identifier: Unlicense
+
+repos:
+-   repo: local
+    hooks:
+    -   id: codespell
+        name: codespell
+        entry: codespell
+        types_or: [c, ino, c++, header]
+        language: system

examples/Vendor/i2c_tiny_usb_adapter/I2C_USB_Interface.h

@@ -34,8 +34,8 @@
 #define CMD_GET_STATUS  3
 
 #define CMD_I2C_IO        4
-#define CMD_I2C_IO_BEGIN  (1<<0) // flag fo I2C_IO
-#define CMD_I2C_IO_END    (1<<1) // flag fo I2C_IO
+#define CMD_I2C_IO_BEGIN  (1<<0) // flag for I2C_IO
+#define CMD_I2C_IO_END    (1<<1) // flag for I2C_IO
 
 /* linux kernel flags */
 #define I2C_M_TEN            0x10  /* we have a ten bit chip address */

examples/Vendor/i2c_tiny_usb_adapter/i2c_tiny_usb_adapter.ino

@@ -12,7 +12,7 @@
 #include <Wire.h>
 #include "Adafruit_TinyUSB.h"
 
-#include "../i2c_tiny_usb_adapter/I2C_USB_Interface.h"
+#include "I2C_USB_Interface.h"
 
 /* This sketch demonstrates how to use tinyusb vendor interface to implement
  * i2c-tiny-usb adapter to use with Linux