Update README with full build instructions and usage examples

- Add link to ESPHome documentation
- Document both HTTP and embedded modes
- Add SHA256 generation commands for all platforms
- Reorganize for clarity

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: swoboda1337

README.md

@@ -1,6 +1,8 @@
 # ESP-Hosted Firmware
 
-Pre-built [ESP-Hosted](https://github.com/espressif/esp-hosted) co-processor firmware binaries for use with ESPHome's [ESP32 Hosted](https://esphome.io/components/update/esp32_hosted/) component.
+Pre-built [ESP-Hosted](https://github.com/espressif/esp-hosted) co-processor firmware binaries for use with ESPHome's [ESP32 Hosted](https://esphome.io/components/esp32_hosted/) component.
+
+For full documentation, see the [ESP32 Hosted Update](https://esphome.io/components/update/esp32_hosted/) page.
 
 ## Supported Targets
 
@@ -15,28 +17,50 @@ Only targets supporting SDIO transport are built:
 
 ## Usage
 
-1. Download the appropriate firmware binary for your co-processor from the [GitHub Page](https://esphome.github.io/esp-hosted-firmware/).
+Pre-built firmware binaries and manifests are available at [esphome.github.io/esp-hosted-firmware](https://esphome.github.io/esp-hosted-firmware/).
+
+### HTTP Mode (Recommended)
+
+Automatically fetch and update firmware from the manifest:
+
+```yaml
+http_request:
+
+update:
+  - platform: esp32_hosted
+    type: http
+    source: https://esphome.github.io/esp-hosted-firmware/manifest/esp32c6.json
+    update_interval: 6h
+```
+
+### Embedded Mode
+
+Embed the firmware binary into your device's flash:
+
+1. Download the firmware binary from the [GitHub Page](https://esphome.github.io/esp-hosted-firmware/)
 2. Place the `.bin` file in your ESPHome configuration directory
-3. Configure the update component in your ESPHome YAML:
+3. Generate the SHA256 hash (see below)
+4. Configure the update component:
 
 ```yaml
 update:
   - platform: esp32_hosted
-    firmware: coprocessor-firmware.bin
-    # SHA256 hash from the .sha256 file
-    expected_checksum: "abc123..."
+    type: embedded
+    path: network_adapter_esp32c6.bin
+    sha256: de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
 ```
 
-## Building Locally
+## Building Custom Firmware
 
-To build the firmware locally:
+To build firmware locally, you'll need to set up the ESP-IDF environment:
 
-```bash
-# Clone ESP-IDF
+```sh
+# Clone and setup ESP-IDF
 git clone -b v5.5.1 --recursive https://github.com/espressif/esp-idf.git
 cd esp-idf
 ./install.sh esp32c6  # or your target
-source export.sh
+source export.sh      # for Linux/macOS
+# export.bat          # for Windows
 cd ..
 
 # Create project from ESP-Hosted example
@@ -50,6 +74,27 @@ idf.py build
 # Output: build/network_adapter.bin
 ```
 
+After building, copy the firmware to your ESPHome configuration directory:
+
+```sh
+cp build/network_adapter.bin /path/to/your/esphome/config/
+```
+
+### Generating SHA256 Hash
+
+For embedded mode, you need the SHA256 hash of your firmware binary:
+
+```sh
+# Linux/macOS
+sha256sum network_adapter.bin
+
+# Windows PowerShell
+Get-FileHash -Algorithm SHA256 network_adapter.bin
+
+# Windows Command Prompt
+certutil -hashfile network_adapter.bin SHA256
+```
+
 ## Versioning
 
 Releases are tagged with the ESP-Hosted version used (e.g., `v2.7.0`).