Difference between revisions of "Rock3/CM3/raspcm4io"

Revision as of 12:22, 13 October 2021

    ROCK 3 >  Compute Module 3 >  Raspberry Pi CM4 IO Board

Getting Started

What you need

Necessary

• CM4 IO main board
• CM4 IO top board
• One of the Storage media below:
  • microSD, larger than 8GB.
• Power supply
  • The CM4 is powered by DC port and has a wide range of input voltage, 12V.
• USB Keyboard and Mouse
  • With four USB-A connectors, CM4 IO can be equipped with a full sized keyboard and mouse.
• Monitor and HDMI Cable
  • CM4 IO is equipped with a full sized HDMI connector. HDMI capable monitor is recommended.
  • HDMI EDID display data is used to determine the best display resolution. On monitors and TVs that support 1080p (or 4K) this resolution will be selected. If 1080p is not supported the next available resolution reported by EDID will be used. This selected mode will work with MOST but not all monitors/TVs.
• Micro USB
  • If you want write image on CM4 IO from USB port , commands you need an USB Male A to Micro USB cable to connect CM4 IO and PC.

Optional

• microSD Card Reader
  • For flashing the image into microSD Card
• USB type A to type Micro USB
  • Write image on CM4 IO from USB port
• USB to TTL serial cable
  • This is needed for serial console.
• Ethernet cable
  • CM4 IO supports Internet access via WIFI or Ethernet.
  • An Ethernet cable is used to connect your CM4 IO to a local network and the Interne
• Audio cable
  • Audio can be played through speaker or headphones using a standard 3.5mm jack.
• WiFi/BT Cards

Install on eMMC from USB port

CM4 supports Maskrom mode, which is a special operation mode for CPU to wait for Micro USB port command. The PC tools we use to communicate with CM4 IO in Maskrom mode are the rkdevelopment tool and AndroidTool tool. We use the rkdevelopment tool in Linux/macOS and the AndroidTool tool under Windows.

Requirement

• CM4 IO board
• Power adapter
• USB Male A to Micro USB .

Install Tools&Drivers

 sudo apt-get install libudev-dev libusb-1.0-0-dev dh-autoreconf

 git clone https://github.com/rockchip-linux/rkdeveloptool
 cd rkdeveloptool
 autoreconf -i
 ./configure
 make

   ./configure: line 4269: syntax error near unexpected token `LIBUSB1,libusb-1.0'
   ./configure: line 4269: `PKG_CHECK_MODULES(LIBUSB1,libusb-1.0)'

   sudo apt-get install pkg-config libusb-1.0

   autoreconf -i
   ./configure
   make

 sudo cp rkdeveloptool /usr/local/bin/

   brew install automake autoconf libusb lsusb

   git clone https://github.com/rockchip-linux/rkdeveloptool
   cd rkdeveloptool
   autoreconf -i
   ./configure
   make

   ./configure: line 4269: syntax error near unexpected token `LIBUSB1,libusb-1.0'
   ./configure: line 4269: `PKG_CHECK_MODULES(LIBUSB1,libusb-1.0)'

   brew install pkg-config

   autoreconf -i
   ./configure
   make

   sudo cp rkdeveloptool /usr/local/bin/

Boot the board to maskrom mode

To boot CM4 IO into maskrom mode is simple:

• 1. Power off the board
  • remove microSD card
• 2. Plug the USB Male A to Micro USB cable to CM4 IO port(the upper USB3 port), the other side to PC
• 3.Press the key and hold, short the follow pins, and then disconnect the pins,release the key.

• 4. For Linux/macOS

Now on your Linux PC, lsusb command show show the following usb devices

   Bus 003 Device 005: ID 2207:330c

• 5. For Windows

Open device manager in your Windows PC, check the Device Manager:

It means the device is in maskrom mode now.

• 6. Now plug the eMMC module and proceed the next step to flash.

Alternatively, if you are running Android and can access ADB, you can reboot the device to loader mode `adb reboot bootloader` then use the rkdeveloptool to reset the device into maskrom mode `rkdeveloptool rd 3` or Windows AndroidTool Switch button to go to maskrom mode.

Begin Installation USB -> eMMC

   rkdeveloptool ld        # List the device
   DevNo=1	Vid=0x2207,Pid=0x330c,LocationID=305	Maskrom

   rkdeveloptool db rk356x_loader_vxxxx.bin

   rkdeveloptool wl 0 /path/to/xxx-gpt.img

   rkdeveloptool rd

   rkdeveloptool db rk356x_loader_vxxxx.bin
   rkdeveloptool wl 0 zero.img

Status

Resource

General purpose input-output (GPIO) connector

CM4 IO has a 40-pin expansion header. Each pin is distinguished by color.

More details about 40-pin Header

• Pins marked with color orange are designed for debug console.
• PWM:x7,PWM0/PWM1/PWM2/PWM3/PWM6/PWM7/PWM11
• SPI:X2,SPI0/SPI3
• I2C:X2,I2C2/I2C4
• UART:X2,UART0/UART2
• ADC:X1, SARADC_IN3
• I2S:X2, I2S1/I2S2

IO Voltage

RK3566 have three IO voltages, 1.8V/3.3V. For CM4 IO, the high level voltage of GPIO pin on 40-PIN HEADER is 3.3V.

| GPIO       | Voltage Level | Tolerance |
| ---------- | ------------- | --------- |
| SARADC_IN3    | 1.8V          | 1.98V     |

GPIO number

Rockchip RK3566 GPIO has 5 banks, GPIO0 to GPIO4, each bank has 32pins, naming as below:

GPIO0_A0 ~ A7 
GPIO0_B0 ~ B7
GPIO0_C0 ~ C7
GPIO0_D0 ~ D7
   
GPIO1_A0 ~ A7
....
GPIO1_D0 ~ D7

The GPIO number can be calculated as below, take GPIO4_D1 (PIN26 on 4-0PIN HEADER) as an example:

GPIO4_D1 = 4*32 + 3*8 + 1 = 153
(A=0, B=1, C=2, D=3)

To set GPIO4_D1 output

cd /sys/class/gpio
echo 153 > export
cd gpio153
echo out > direction
echo 1 > value     # output high
echo 0 > value     # output low