Waveshare HDMI 7 inch Display Documentation
The Waveshare HDMI 7 inch Display is a compact and versatile display module designed for use in various IoT projects. It features a 7-inch LCD screen with a resolution of 1024x600 pixels, supporting HDMI input and capacitive touch functionality. This documentation provides an overview of the display's specifications, pinouts, and example code snippets to get you started with integrating it into your IoT projects.
Display Size: 7 inches
Resolution: 1024x600 pixels
Interface: HDMI
Touchscreen: Capacitive, 5-point touch
Power Supply: 5V DC
Operating System: Compatible with Windows, Linux, and Android
The Waveshare HDMI 7 inch Display has the following pinouts:
HDMI port: For connecting to a HDMI source device
Power connector: 5V DC input
Touch interface: I2C interface for capacitive touch functionality
LED backlight control: For adjusting the display's backlight brightness
### Example 1: Raspberry Pi with Raspbian OS
To use the Waveshare HDMI 7 inch Display with a Raspberry Pi, you'll need to configure the HDMI output and enable the touch interface. Here's an example Python script using the RPi.GPIO library:
```python
import RPi.GPIO as GPIO
import time
# Set up HDMI output
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT) # CE0 (HDMI output)
GPIO.output(17, GPIO.HIGH)
# Set up touch interface (I2C)
import smbus
bus = smbus.SMBus(1)
touch_addr = 0x48
# Initialize touch interface
bus.write_byte(touch_addr, 0x00) # Reset
bus.write_byte(touch_addr, 0x01) # Enable touch
# Read touch data ( coordinates and touch state)
touch_data = bus.read_i2c_block_data(touch_addr, 0x02, 6)
x_coord = (touch_data[0] << 8) + touch_data[1]
y_coord = (touch_data[2] << 8) + touch_data[3]
touch_state = touch_data[4]
print("Touch coordinates: ({}, {}) - State: {}".format(x_coord, y_coord, touch_state))
```
### Example 2: Windows 10 IoT Core with C#
To use the Waveshare HDMI 7 inch Display with a Windows 10 IoT Core device, you'll need to create a Universal Windows Platform (UWP) app and use the Windows.Devices.Input namespace to access the touch interface. Here's an example C# code snippet:
```csharp
using Windows.Devices.Input;
using Windows.UI.Xaml.Controls;
// Initialize the touchscreen
TouchCapabilities touchCapabilities = new TouchCapabilities();
TouchDevice touchDevice = touchCapabilities.GetTouchDevice();
// Handle touch events
touchDevice.TouchEntered += TouchDevice_TouchEntered;
touchDevice.TouchMoved += TouchDevice_TouchMoved;
touchDevice.TouchExited += TouchDevice_TouchExited;
// Setup HDMI output
DisplayInformation displayInfo = DisplayInformation.GetForCurrentView();
displayInfo.TrySetOrientation(DisplayOrientations.Landscape);
```
Additional Resources
For more information on using the Waveshare HDMI 7 inch Display, please refer to the following resources:
Waveshare Official Documentation: [www.waveshare.com/wiki/HDMI_Display_7inch](http://www.waveshare.com/wiki/HDMI_Display_7inch)
Raspberry Pi Forums: [www.raspberrypi.org/forums/viewtopic.php?t=191142](http://www.raspberrypi.org/forums/viewtopic.php?t=191142)
Windows 10 IoT Core Documentation: [docs.microsoft.com/en-us/windows/iot-core/](http://docs.microsoft.com/en-us/windows/iot-core/)
