VAR-SOM-AM33 Linux Unit Testing: Difference between revisions
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*Connect CANL, CANH and GND pins of two VAR-SOM-AM33 boards (located on J17). | *Connect CANL, CANH and GND pins of two VAR-SOM-AM33 boards (located on J17). | ||
*Power-up both boards. | *Power-up both boards. | ||
*Type the following | *Type the following into the shell of both boards for configuration the CAN bus device: | ||
<pre>$ ip link set can0 type can bitrate 50000 triple-sampling on | <pre>$ ip link set can0 type can bitrate 50000 triple-sampling on | ||
$ ip link set can0 up | $ ip link set can0 up | ||
</pre> | </pre> | ||
*Type the following to the shell of board 1 (which is used for testing | *Type the following to the shell of board 1 (which is used for testing receiving over can0 device): | ||
<pre>$ | <pre>$ candump can0 | ||
</pre> | |||
$ cansend can0 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88</pre> | *Type the following to the shell of board 2 (which is used for testing sending data packets over can0 device): | ||
<pre>$ cansend can0 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88</pre> | |||
*At this point, board 1 will receive the data packet sent from board 2: | *At this point, board 1 will receive the data packet sent from board 2: | ||
<pre> | <pre><0x001> [8] 11 22 33 44 55 66 77 88 | ||
</pre> | |||
</pre | |||
Revision as of 14:19, 28 August 2014
Unit Testing
CPU info
root@am335x-evm:~# cat /proc/cpuinfo Processor : ARMv7 Processor rev 2 (v7l) BogoMIPS : 598.35 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x3 CPU part : 0xc08 CPU revision : 2 Hardware : VAR-SOM-AM33 Revision : 0000 Serial : 0000000000000000 root@am335x-evm:~# cat /proc/version Linux version 3.2.0-AM335XPSP_04.06.00.11.VAR_R13 (uri@pluto) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #1 T ue Oct 15 10:06:14 IST 2013
RTC
To set the RTC first set the date from Linux shell, type:
$ date 2013.08.27-15:43
Then set the real time clock from Linux shell, type:
$ hwclock --systohc
Power down your board wait 15 seconds and power up. Check your system with date and the time should be up to date.
Audio record/play
$ aplay /usr/share/sounds/alsa/Front_Center.wav $ arecord -f cd -d 10 -D hw:0,0 test.wav $ aplay test.wav
WLAN
List SSIDs, from Linux shell type:
$ ifconfig wlan0 up $ iw wlan0 scan
Connecting to an encrypted network
Find your network from the above scan command.
$ wpa_passphrase <YourAP> <YourPassword> >wpa.conf $ ps | grep wpa_supplicant *kill the wpa_supplicant process if exist. $ wpa_supplicant -Dnl80211 -iwlan0 -c./wpa.conf -B $ udhcpc -iwlan0 $ ifconfig
- WL12xx calibration tool
Calibration of TI WL12xx wireless device is required and is saved into the NVS file. The NVS file is then used by the wl12xx driver. For more details please read NLCP Calibration Process
OpenGL demo (supported CPUs)
Run the demo script at Linux command prompt after the VAR-DVK-AM33 EVB boots up
/etc/init.d/335x-demo
ADC controller
please follow TI wiki pages: http://processors.wiki.ti.com/index.php/AM335x_ADC_Driver%27s_Guide
Bluetooth
- Bring BT device up:
$ hciconfig hci0 up $ hcitool scan
Work with standard bluetooth API and commands
CAN Bus
- Connect CANL, CANH and GND pins of two VAR-SOM-AM33 boards (located on J17).
- Power-up both boards.
- Type the following into the shell of both boards for configuration the CAN bus device:
$ ip link set can0 type can bitrate 50000 triple-sampling on $ ip link set can0 up
- Type the following to the shell of board 1 (which is used for testing receiving over can0 device):
$ candump can0
- Type the following to the shell of board 2 (which is used for testing sending data packets over can0 device):
$ cansend can0 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88
- At this point, board 1 will receive the data packet sent from board 2:
<0x001> [8] 11 22 33 44 55 66 77 88