MarsBoard AM335X Package A

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MarsBoard AM335X
mini PC
MarsBoard-AM335X-Package-A.jpg

MarsBoard AM335X, Flexible Designed Development Board Powered by TI AM335X
MarsBoard AM335X Package A
working with Accessory Shield
Marsboard-am335x-7.jpg

working with Accessory Shield
MarsBoard AM335X Package A
working with Analog Test Shield
Marsboard-am335x-8.jpg

working with Analog Test Shield
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Primary Attribute
Category: mini PC, MarsBoard AM335X
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Brand: Waveshare
Website
English: Website
Chinese: 官方网站
Onboard Interfaces
Related Products

Getting Ready

The MarsBoard AM335X Package A contains 2 Shields, of which drivers are embedded in this firmware: Click here to download the firmware (MarsBoard-AM335X-Package-A-TF-4GB-Debian-7.5-HDMI-2015.06.20-v2.1.img.7z). Please first write the firmware image to your MarsBoard and then enjoy these development kits. Note: location of API source code for the following examples: /home/debian/API.

How to write OS to a TF card

  1. Unzip the firmware.
    A file archiver software, such as 7-Zip, is required to unzip the corresponding image file.
  2. Format your TF card.
    Run the software SDFormatter.exe to format your TF.
    MarsBoard-AM335X-User-Manual-1.jpg
  3. Write the system firmware.
    Note: before the image written, please make sure the capacity of the TF card is bigger than the size of the firmware image!
    Run the software Win32DiskImager.exe, choose the unzipped .img file and storage device then click the button Write.
    MarsBoard-AM335X-User-Manual-2.jpg

Boot up from the TF card system

Note: a 5V/2A adapter is used for power supply.

  1. Insert the TF card into the TF card socket;
  2. Set the boot up switch (hereafter BOOT) to “SD”;
    For easy debugging, Connect the DEBUG port on SIM-AM335X board to your PC with a mini-USB cable.
  3. Power up to start the system.

Login

  1. Power up and start the Debian OS.
    User name: debian
    password: temppd
  2. Enable "root" user:
    sudo -s
  3. Execute the script to install the examples:
    ./cape
All the following examples are run under root permission.

Examples

Note:

  • Location of API source code for the following examples: /home/debian/API.

Examples for Accessory Shield

  • Connect Accessory Shield to AM335X Adapter and then plug them to the mother board.
  • Run the following command with root permission.
  • You can press Ctrl + C to terminate process.

1) Key test

Run the command:
test_key

Push or press the joystick and the corresponding keys will be listed on the terminal, e.g.

key1 is pressed code ------->B
key1 is pressed code ------->D
key1 is pressed code ------->C
key1 is pressed code ------->A
key1 is pressed code ------->CTR</pre>

2) LM75 test

Run the command:
test_lm75

Current temperature will be printed, e.g.

temperature:22.375000

3) ADC test

Run the command:
test_adc 0

Adjust the potentiometer knob and AD value of Channel 0 will be printed, e.g.

Channel 0 current value is 2201

4) OLED test

Run the command:
test_oled

OLED screen will work and display a picture. 5) Buzzer test

Make the buzzer sound with the command:
test_gpio_buzzer 0
Stop the buzzer sound with the command:
test_gpio_buzzer 1

6) RTC test

Show system date time:
date
Set system date time:
date 020809302014.23
Set the hardware clock of RTC module:
hwclock -w -f /dev/rtc1

If read time error, execute the following command:

Show the hardware clock of RTC module:
hwclock –r –f /dev/rtc1
Synchronize the hardware clock to system date time:
hwclock –s –f /dev/rtc1

Power off and reboot then execute the following command:

hwclock -r -f /dev/rtc1
hwclock -s -f /dev/rtc1

7) ADXL345 test

Show the position status of the board with the command:
test_adx345
Move the board and the printed logs will be changed.

Examples for Analog Test Shield

  • Connect Analog Test Shield to AM335X Adapter and then plug them to the mother board.
  • Run the following command with root permission.
  • You can press Ctrl + C to terminate process.

1) DAC test

Place jumpers on DAC-SPK and DAC-LED.
Execute the command:
test_dac
You can adjust the Analog Potentiometer to change the audio frequency.
LED flashed.
Adjust the Volume knob to change volume of the speaker.

2) PWM test:

Place jumpers on DAC-SPK, PWM-LED and D11-PWM.
Execute the command:
test_gpio_pwm 100
Audio frequency and LED brightness are changeable according to the parameter following test_gpio_pwm.
Note: The PWM here is generated by GPIO.

3) ADC test

Place jumpers on ADC-A0
Execute the command:
test_adc 0
Adjust the Analog knob and the printed value will be changed.

Resources

Peripherals Schematic

MarsBoard AM335X Schematic

Firmware

Click here to download the firmware (MarsBoard-AM335X-Package-A-TF-4GB-Debian-7.5-HDMI-2015.06.20-v2.1.img.7z)

Development tools for the AM335X

Cross compiler tool chain

Support

Mail.png Contact your seller (fast response and most recommended)

or send emails to service@waveshare.com (not fast enough but please be patient) for help.

Our working time: 09:00-18:00 (UTC+8 Monday to Saturday)