This example Seeeduino (Arduino clone) code is for the Crystalfontz line of 7" displays powered by a Bridgetek EVE chip. These displays are driven by the powerful BT817 chip and are available in the capacitive touch option only right now. They all come with a sunlight readable backlight that boasts 1000 nits when no additional layer is on top of the display. Please refer to the datasheets for more information.
For more information on our full list of EVE displays, please click here
7" EVE Displays
CFAF1024600B0-070SC-A1 - Capacitive Touch
Full Functional Seeeduino Demo Kits for these products can be found here:
CFAF1024600B0-070SC-A1-2 - Capacitive Touch Dev Kit
To toggle on or off different demonstrations, some defines in "CFA10108_defines.h" can be changed.
#define BMP_DEMO (0)
#define BMP_SCROLL (0)
#define SOUND_DEMO (0)
#define SOUND_VOICE (0)
#define SOUND_PLAY_TIMES (10)
#define LOGO_DEMO (1)
#define LOGO_PNG_0_ARGB2_1 (1)
#define BOUNCE_DEMO (1)
#define MARBLE_DEMO (0)
#define TOUCH_DEMO (0)
#define VIDEO_DEMO (1) BMP_DEMO - Toggled to 1 will look to the uSD card to pull the "SPLASH.RAW" file and display it
BMP_SCROLL - Toggled to 1 will look to the uSD card to pull the "CLOUDS.RAW" file and display it scrolling accross the screen
LOGO_DEMO - Toggled to 1 will display the Crystalfontz Logo from flash
BOUNCE_DEMO - Toggled to 1 will show a ball bouncing around the screen
MARBLE_DEMO - Toggled to 1 will look in the uSD card and pull "BLUEMARB.RAW" and demonstrate the earth rotating and bouncing around in screen in place of the ball
TOUCH_DEMO - Toggled to 1 will enable the touch screen (only compatible on touch versions of the display)
VIDEO_DEMO - Toggled to 1 will enable the video demo. Video files "Ice_400.avi" must have been previsously loaded into flash.
To CFA10098 Adapter Board (See kits above)
| 10098 Pin | Seeeduino Pin | Connection Description |
|---|---|---|
| 1 (3v3) | 3v3 | +3.3V Power |
| 2 (GND) | GND | Ground |
| 3 (SCK) | D13 | Serial Clock |
| 4 (MOSI/D0) | D11 | MOSI/D0 |
| 5 (MISO/D1) | D12 | MISO/D1 |
| 6 (GPIO0/D2) | DNC | GPIO0/D2 |
| 7 (GPIO1/D3) | DNC | GPIO1/D2 |
| 8 (GND) | GND or DNC | Ground |
| 9 (CS) | D9 | Chip Select |
| 10 (INT) | D7 | Interupt |
| 11 (PD) | D8 | Chip Power Down |
| 12 (MODE/GPIO2) | DNC | MODE/GPIO2 |
| 13 (AUDIO) | DNC | Audio PWM |
| 14 (GND) | GND or DNC | Ground |
To Optional uSD Adapter Board
| microSD Pin | Seeeduino Pin | Connection Description |
|---|---|---|
| 1 (CS) | D10 | SD CS |
| 2 (DI) | D11 | SD MOSI |
| 3 (DO) | D12 | SD MISO |
| 4 (VDD) | 3v3 | +3.3V Power |
| 5 (SCLK) | D13 | SD SCLK |
| 6 (VSS) | GND | Ground |
Additional accessories for the products can be found at the bottom of each of the product pages. This will include 30 position FFC cables, wires, and any accessory boards that are available.
to program the built in W25Q128JVPIQ flash, set PROGRAM_FLASH_FROM_USD to (1). The program is designed to take a file called splash.a8z, bluemarb.a8z, cloud.a8z, and/or ice.avi.
Demo files can be found in "CFA10108\uSD_Files".
To create an *.a8z file, following the below steps.
- create a 24-bit bmp
- load the bmp into EVE Asset Builder
- Set the settings
- Use the "image Converter" tab
- ADD the *.bmp
- Set EVE Product Range: BT81X
- Output Format: COMPRESSSED_RGBA_ASTC_8x8_KHR
- Compressed: yes
- ASTC Preset: thorough
- Select CONVERT
- Rename the *.bin file created to splash.a8z (or bluemarb.a8z or cloud.a8z depending on the demo)
- Load the splash.a8z file onto the uSD connected with the Seeeduino controlling the EVE display
- Run the program ensuring that PROGRAM_FLASH_FROM_USD = 1 (this may take a while)
- Use the Serial monitor to get the values shown on lines 96-103 of CFA10108_defines.h
- Update lines 96-103 of CFA10108_defines.h with the new values and change PROGRAM_FLASH_FROM_USD = 0
- The data is stored in flash and will now show when the demos are turned on
For an in-depth guide to loading custom images on our EVE lineup of displays without an SD card (using the Seeeduino's flash memory), please refer to our blog post available here.