Cutie Pi: 基于CM4设计的开源8寸平板Linux电脑

内容介绍

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CutiePi是一款在Kickstarter上众筹的8寸平板电脑，由台湾的一只设计团队设计并开源出来，最早众筹时是基于树莓派CM3模块，目前已经升级到CM4，支持屏幕分辨率为1280*800.将于2022年Q1正式面市。

技术指标：

BCM2711, Quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5 GHz

Raspberry Pi Compute Module 4, Wireless, 2GB Lite (CM4102000)

8” IPS LCD (1280x800)

Li-Po 5000 mAh

WLAN 2.4 GHz, 5.0 GHz IEEE 802.11 b/g/n/ac
Bluetooth 5.0, BLE

Rear-facing camera 5MP (OV5647)

1x USB type-A
1x USB type-C (charging)
1x micro HDMI
1x microSD slot

206(W) x 134(H) x 14(D) mm

Raspberry Pi OS + CutiePi shell

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外观

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拆开

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细看 - 使用CM4为主控

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内部电路板

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CutiePi Shell（开源）

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站立模式

Drivers for the CutiePi tablet

This repository hosts modified drivers and device tree sources needed for the CutiePi board, the open source Raspberry Pi Compute Module 4 carrier board.

Current release is tested on Raspberry Pi OS (arm64 bullseye) with kernel 5.10 and 5.11.

MIPI Display and touch

CutiePi tablet uses an 8-inch (800x1280) MIPI DIS TFT LCD display, it has ILI9881C as its LCD driver.

The needed display driver and overlay has been merged into Raspberry Pi's official linux tree (rpi-5.10.ybranch). We kept the driver and overlay files in this repo for reference.

A device tree overlay is also needed, which can be compiled from Display/cutiepi-panel-overlay.dts with following command:

dtc -I dts -O dtb -o cutiepi-panel.dtbo cutiepi-panel-overlay.dts

Copy the file to /boot/overlays, then add following configure in config.txt:

# MIPI DSI display 
dtparam=i2c_arm=on
dtoverlay=cutiepi-panel

Camera

# camera 
start_x=1
gpu_mem=128
# Uncomment for camera module v2
#dtoverlay=imx219
dtoverlay=ov5647

Gyroscope

Compile the mpu6050-i2c5 overlay and copy it to /boot/overlays.

# Gyroscope 
dtoverlay=i2c5,pins_10_11
dtoverlay=mpu6050-i2c5,interrupt=27

USB host

otg_mode=1

MCU

# MCU reading (ttyS0)
enable_uart=1
dtoverlay=uart1

Make sure #dtparam=spi=on is commented out.

Github资源链接：

硬件设计资料：

Cadence OrCAD Schematic CutiePi_V2.3-20210409.DSN
Cadence OrCAD/Allegro PCB file CutiePi_V2_3.brd
Bill of Materials CutiePi_V2.3_BOM-20210802.xlsx
PDF of schematic CutiePi_V2.3_schematic-20210414.pdf