156 lines
5.2 KiB
Markdown
156 lines
5.2 KiB
Markdown
# HMD Fusion Development Toolkit V3.0
|
||
|
||
> AI Generated from ChatGPT processing the [Official PDF Document](./resources/HMD_Fusion_Development_Toolkit_-_V3_-_March_2025.pdf)
|
||
|
||
_March 2025_
|
||
|
||
## Introduction
|
||
|
||
Our ambition is for HMD Fusion to provide a platform for innovation for businesses, startups, communities, and people around the world — making new applications of smartphone technology more accessible and flexible for everyone.
|
||
|
||
HMD Fusion features next-generation design innovation, including built-in hardware connectors that enable endless new applications, known as "smart outfits."
|
||
|
||
Examples of smart outfits:
|
||
- A case with a cover that removes the constant interruption of digital notifications.
|
||
- A retail payment terminal to scan barcodes and accept payments.
|
||
- Many more ideas to create.
|
||
|
||
With HMD Fusion, we are introducing a radically new and innovative approach to smartphones and their capabilities.
|
||
|
||
> **Note:** This version includes final physical dimensions for HMD Fusion. It’s recommended to use a physical device to measure and test engineering/fabrication tolerances.
|
||
|
||
Join the community: [HMD Discord](https://bit.ly/hmddiscord)
|
||
|
||
---
|
||
|
||
## Design Specs
|
||
|
||
HMD Fusion is a streamlined computing core at its heart, creating space for endless new and innovative applications.
|
||
|
||
**3D Files:**
|
||
We provide 3D source files of the HMD Fusion outline and an example smart outfit for use in your preferred 3D software.
|
||
|
||
- Download 3D files: [HMD Fusion APK Example 3D Files](https://downloads.ctfassets.net/wcfotm6rrl7u/aYYPsnBfWn8gKP5i2aqJT/c545b32631f5d97a700cff13dd82eaca/HMD_Fusion_APK_example_3D_files_V2-_September_2024.zip)
|
||
|
||
**Physical Dimensions:**
|
||
- Width: 75.5 mm
|
||
- Height: 164.15 mm
|
||
- Depth: 8.3 mm
|
||
|
||
---
|
||
|
||
## Interface
|
||
|
||
HMD Fusion includes six electrical connector pins arranged in a single horizontal row for hardware interfacing using smart "pogo pin" mechanisms.
|
||
|
||
- Pins #1–#5: USB 2.0 interface (data transfer).
|
||
- Pin #6: ADC (analog-to-digital converter) detection.
|
||
|
||
**USB 2.0 Interface:**
|
||
- Supports **USB host** and **accessory** modes.
|
||
|
||
---
|
||
|
||
## Hardware Details
|
||
|
||
**Power Specifications:**
|
||
- In "Charging Mode": Smart outfit provides up to **15W** to HMD Fusion.
|
||
- In "Power Mode": HMD Fusion provides up to **5W** to smart outfit.
|
||
|
||
**ADC Value Detection:**
|
||
- Eighteen (18) unique values can be communicated via the ADC pin.
|
||
- Example: Smart outfit triggers device behavior (like changing wallpaper).
|
||
|
||
**Download Demo APK:**
|
||
[HMD Fusion ADC Demo APK](https://downloads.ctfassets.net/wcfotm6rrl7u/aYYPsnBfWn8gKP5i2aqJT/c545b32631f5d97a700cff13dd82eaca/HMD_Fusion_APK_example_3D_files_V2-_September_2024.zip)
|
||
|
||
**Sample Java Code (Read ADC Pin):**
|
||
```java
|
||
private static final String smart_avc = "cat /sys/bus/iio/devices/iio:device0/in_voltage_pm6450_smart_adc_therm_input";
|
||
|
||
String res = "";
|
||
try {
|
||
Process process = Runtime.getRuntime().exec(smart_avc);
|
||
process.waitFor();
|
||
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
|
||
String line;
|
||
while ((line = reader.readLine()) != null) {
|
||
res += line;
|
||
}
|
||
} catch (Exception e) {
|
||
e.printStackTrace();
|
||
}
|
||
try {
|
||
String str = "Smart avc:" + res;
|
||
smartAvc.setText(str);
|
||
} catch (IOException e) {
|
||
e.printStackTrace();
|
||
}
|
||
```
|
||
|
||
---
|
||
|
||
## Power Management
|
||
|
||
**VBUS Power Management:**
|
||
- Controlled automatically based on screen status or via APIs.
|
||
- **Screen off:** VBUS power off after 10 minutes.
|
||
- **Screen on:** VBUS power on immediately.
|
||
|
||
**Manage VBUS Status (Java Example):**
|
||
```java
|
||
private void sendVbusControlIntent(boolean turnOn) {
|
||
String action = turnOn ? ACTION_TURN_ON_VBUS : ACTION_TURN_OFF_VBUS;
|
||
Intent intent = new Intent(action);
|
||
intent.putExtra(EXTRA_FORCE_BYPASS, true);
|
||
sendBroadcast(intent);
|
||
}
|
||
```
|
||
Check status:
|
||
```java
|
||
String status = Settings.Global.getString(this.getContentResolver(),"show_vbus_status");
|
||
```
|
||
|
||
---
|
||
|
||
## Android & USB 2.0 APIs
|
||
|
||
HMD Fusion will ship with Android 14.
|
||
|
||
**Supported modes:**
|
||
- **Host Mode:** HMD Fusion device acts as USB host.
|
||
- **Accessory Mode:** Smart outfit acts as USB device.
|
||
|
||
**Reference Links:**
|
||
- [Android USB Host and Accessory Overview](https://developer.android.com/reference/android/hardware/usb/package-summary)
|
||
- [AOA 2.0 Documentation](https://source.android.com/docs/core/interaction/accessories/aoa2)
|
||
- [Android USB Development](https://developer.android.com/develop/connectivity/usb)
|
||
|
||
---
|
||
|
||
## Have Questions?
|
||
|
||
**Join the HMD Discord Community:**
|
||
[Join HMD Discord](https://bit.ly/hmddiscord)
|
||
|
||
**Business or Commercial Partnership Inquiry:**
|
||
[Contact HMD Solutions](https://solutions.hmd.com/contact-us)
|
||
|
||
**Brand Collaboration Inquiry:**
|
||
[Brand Collaboration Contact](https://www.hmd.com/en_int/collaborations-contact)
|
||
|
||
---
|
||
|
||
## Terms of Use
|
||
_Effective March 3, 2025_
|
||
|
||
- **License:** Permitted use for designing smart outfits.
|
||
- **Restrictions:** No reverse engineering, sublicensing, or publishing code.
|
||
- **Termination:** Immediate if terms are breached.
|
||
- **Feedback:** HMD may freely use feedback without compensation.
|
||
- **Warranty:** Toolkit is provided "AS-IS."
|
||
- **Liability:** HMD is not liable for damages; limited liability where applicable.
|
||
- **Governing Law:** Finnish law, courts of Helsinki, Finland.
|
||
|
||
---
|
||
|