From b5d519e6d17215eb1e459116db7e8c66d8f616c5 Mon Sep 17 00:00:00 2001
From: Kamil Trzcinski <ayufan@ayufan.eu>
Date: Mon, 11 Apr 2022 15:04:18 +0200
Subject: [PATCH] Add note about Arducam 16MP

---
 .vscode/settings.json | 64 +++++++++++++++++++++++++++++++++++++++++++
 README.md             | 36 ++++++++++++++++++++----
 2 files changed, 95 insertions(+), 5 deletions(-)

diff --git a/.vscode/settings.json b/.vscode/settings.json
index e319359..a4e4497 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -2,5 +2,69 @@
   "files.exclude": {
     "**/*.d": true,
     "**/*.o": true
+  },
+  "files.associations": {
+    "*.vue": "javascript",
+    "array": "cpp",
+    "*.tcc": "cpp",
+    "istream": "cpp",
+    "ranges": "cpp",
+    "tuple": "cpp",
+    "utility": "cpp",
+    "cstdlib": "cpp",
+    "atomic": "cpp",
+    "bit": "cpp",
+    "cctype": "cpp",
+    "chrono": "cpp",
+    "clocale": "cpp",
+    "cmath": "cpp",
+    "codecvt": "cpp",
+    "compare": "cpp",
+    "concepts": "cpp",
+    "condition_variable": "cpp",
+    "cstdarg": "cpp",
+    "cstddef": "cpp",
+    "cstdint": "cpp",
+    "cstdio": "cpp",
+    "cstring": "cpp",
+    "ctime": "cpp",
+    "cwchar": "cpp",
+    "cwctype": "cpp",
+    "deque": "cpp",
+    "list": "cpp",
+    "map": "cpp",
+    "set": "cpp",
+    "unordered_map": "cpp",
+    "unordered_set": "cpp",
+    "vector": "cpp",
+    "exception": "cpp",
+    "algorithm": "cpp",
+    "functional": "cpp",
+    "iterator": "cpp",
+    "memory": "cpp",
+    "memory_resource": "cpp",
+    "numeric": "cpp",
+    "optional": "cpp",
+    "random": "cpp",
+    "ratio": "cpp",
+    "string": "cpp",
+    "string_view": "cpp",
+    "system_error": "cpp",
+    "type_traits": "cpp",
+    "initializer_list": "cpp",
+    "iomanip": "cpp",
+    "iosfwd": "cpp",
+    "limits": "cpp",
+    "mutex": "cpp",
+    "new": "cpp",
+    "ostream": "cpp",
+    "sstream": "cpp",
+    "stdexcept": "cpp",
+    "stop_token": "cpp",
+    "streambuf": "cpp",
+    "thread": "cpp",
+    "cinttypes": "cpp",
+    "typeinfo": "cpp",
+    "fourcc.h": "c"
   }
 }
diff --git a/README.md b/README.md
index 06d5eb8..c8e858d 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,14 @@ uname -a
 v4l2-ctl --list-devices
 ```
 
+The `5.15 kernel` is easy to get since this is LTS kernel for Raspberry PI OS:
+
+```bash
+apt-get update
+apt-get dist-upgrade
+reboot
+```
+
 ## Compile
 
 ```bash
@@ -138,11 +146,6 @@ Depending on control they have to be used for camera, ISP, or JPEG or H264 codec
 -camera-jpeg.options=compression_quality=60
 ```
 
-
-
-
-
-
 ## List all available formats and use proper one
 
 You might list all available capture formats for your camera:
@@ -160,6 +163,29 @@ Some of them might be specified to streamer:
 ./*_camera.sh -camera-format=H264 # This is unstable due to h264 key frames support
 ```
 
+## Camera support
+
+### Arducam 16MP
+
+The 16MP sensor is supported by default in Raspberry PI OS after adding to `/boot/config.txt`.
+However it will not support auto-focus nor manual focus due to lack of `ak7535` compiled
+and enabled in `imx519`. Focus can be manually controlled via `i2c-tools`:
+
+```shell
+# /boot/config.txt
+dtoverlay=imx519,media-controller=0
+
+# /etc/modules-load.d/modules.conf
+i2c-dev
+
+# after starting camera execute to control the focus with `0xXX`, any value between `0x00` to `0xff`
+# RPI02W (and possible 2+, 3+):
+i2ctransfer -y 22 w4@0x0c 0x0 0x85 0x00 0x00
+
+# RPI4:
+i2ctransfer -y 11 w4@0x0c 0x0 0xXX 0x00 0x00
+```
+
 ## License
 
 GNU General Public License v3.0