Included Examples and Scripts¶
The MitySOM-5CSX module features a tri-color (red, green and blue) LED that can be controlled by a user application or script. We have provided an example script that interfaces with the LED driver. Note that for development kits that included "pre-production" silicon you should reference the "leds" script and for newer module/development kits use the "lp5562" script.
80-000640 and 80-000639 Development Kit LED script¶
Uses an LED driver, instead of I2C write commands, to change the color of the LED in a pattern.
root@mitysom-5csx:~# ./scripts/lp5562 BLUE ON RED ON GREEN ON GREEN1 ON
lp5562 Script Content (cycles through each LED/color)
#!/bin/sh echo 100 > /sys/class/leds/B/brightness echo "BLUE ON" sleep 1 echo 0 > /sys/class/leds/B/brightness echo 100 > /sys/class/leds/R/brightness echo "RED ON" sleep 1 echo 0 > /sys/class/leds/R/brightness echo 100 > /sys/class/leds/G/brightness echo "GREEN ON" sleep 1 echo 0 > /sys/class/leds/G/brightness echo 100 > /sys/class/leds/G1/brightness echo "GREEN1 ON" sleep 1 echo 0 > /sys/class/leds/G1/brightness
Depreciated - 80-000615 Development Kit LED script¶
I2C Power/Current monitor (IC located on baseboard)¶
The MitySOM-5CSX Development Kit Baseboard features a LTC2945 current monitor IC which monitors the current drawn by the modules +5V supply. This allows users to obtain an good approximation of module power consumption instantaneously.
root@mitysom-5csx:~# ./scripts/pwr power = 2613 mW
This script will configure the MitySOM-5CSX as a 5MB "mass storage" device that can be seen with a PC.
- From the serial port of the MitySOM-5CSX dev board run the enable_usb script from /home/root/scripts
root@mitysom-5csx:~# ./scripts/enable_usb g_mass_storage gadget: Mass Storage Function, version: 2009/09/11 g_mass_storage gadget: Number of LUNs=1 lun0: LUN: removable file: /home/root/scripts/backing_file g_mass_storage gadget: Mass Storage Gadget, version: 2009/09/11 g_mass_storage gadget: userspace failed to provide iSerialNumber g_mass_storage gadget: g_mass_storage ready s3c-hsotg ffb40000.usb: bound driver g_mass_storage root@mitysom-5csx:~# s3c-hsotg ffb40000.usb: GINTSTS_USBSusp s3c-hsotg ffb40000.usb: s3c_hsotg_irq: USBRst s3c-hsotg ffb40000.usb: new device is high-speed s3c-hsotg ffb40000.usb: s3c_hsotg_irq: USBRst s3c-hsotg ffb40000.usb: new device is high-speed s3c-hsotg ffb40000.usb: new address 4 g_mass_storage gadget: high-speed config #1: Linux File-Backed Storage
- Plug a Mini-USB from the USB-OTG interface (J401) into a PC
- The PC should install drivers and show a new mass storage device 5MB in size
- On your MitySOM mount the backing file to a mount point
- You can now access any files that are placed in the backing directory
This script will retrieve the HW version and display it.
- From the serial port of the MitySOM-5CSX dev board run the hw_version script from /home/root/scripts
root@mitysom-5csx:~# ./scripts/hw_version HW VERION: 1100000000 EXPECTED : 1100000000 CORRECT VERSION
SoM Thermocouple "tc74"¶
The MitySOM-5CSX module features an on-module thermocouple that can read the current temperature from that location. It is located on the "bottom" side of the module. Unlike the examples above the thermocouple is read by an application that is included on the development kit SD card file system.
For the latest details about using the temperature sensor please visit https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/SoM_Temperature_Sensor
FPGA DDR Memory Test¶
As a part of the included/pre-built FPGA image that is loaded automatically on startup of the module there is also a test application that writes and reads from the FPGA DDR memory. To execute this test perfrom the following command from the serial port:
root@mitysom-5csx:~# fpgaddrtest Writing counting pattern to FPGA DDR Writing done Reading and validating counting pattern from FPGA DDR Read done Correct: 16777216, Miss Match: 0
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