This version is outdated by a newer approved version.
This version (06 May 2011 23:15) is a draft.
Approvals: 0/1
This version (06 May 2011 23:15) is a draft.Approvals: 0/1
This is an old revision of the document!
Table of Contents
Adding ADIS16240 to the Kernel
To add support for the ADIS16240 to the kernel build system, a few things must be enabled properly for things to work.The configuration is as following:
Linux Kernel Configuration
Device Drivers --->
Sound --->
[*] Staging drivers --->
<*> Industrial I/O support --->
[*] Enable ring buffer support within IIO
{*} Industrial I/O lock free software ring
-*- Enable triggered sampling support
<M> Analog Devices ADIS16240 Programmable Impact Sensor and Recorder
Adding iioring Application
iioring is an application which can be used to read ring buffer from IIO deives. To add support for the iioring to the Linux build system, a few things must be enabled properly for things to work.The configuration is as following:
Blackfin test programs ---> [*] Analog Devices IIO device ring test
Testing ADIS16240
root:/> modprobe adis16240 adis16240: module is from the staging directory, the quality is unknown, you have been warned. adis16240: at CS5 (irq 54)
We can read individual sampling values from sysfs nodes like:
root:/> cd /sys/bus/iio/devices/device0/ root:/sys/devices/platform/bfin-spi.0/spi0.5/device0>ls accel_x_offset in0_raw accel_x_peak_raw in_supply_raw accel_x_raw in_supply_scale accel_xyz_squared_peak_raw name accel_y_offset power accel_y_peak_raw reset accel_y_raw scan_elements accel_z_offset subsystem accel_z_peak_raw temp_raw accel_z_raw temp_scale available_sampling_frequency trigger device0:buffer0 uevent device0:event0 root:/sys/devices/platform/bfin-spi.0/spi0.5/device0> cat accel_x_raw -26 root:/sys/devices/platform/bfin-spi.0/spi0.5/device0> cat accel_y_raw 18 root:/sys/devices/platform/bfin-spi.0/spi0.5/device0> cat accel_z_raw 54
We can also read values by ring:
root:/> ./iioring -n adis16240 -c 6 -l 1 iio device number being used is 0 iio trigger number being used is 0 c2a6 ffe5 c012 c034 ff06 c134 223474973672 42a6 ffe6 c012 c033 ff0a 4134 223475948544 42a6 ffe5 c012 c036 ff0b 4134 223476918262 c29f ffe4 c013 c036 ff0c c132 223477894720 429f ffe5 c012 c036 ff0b 4132 223478873037 429f ffe4 c013 c036 ff0c 4132 223479848295 429f ffe5 c013 c036 ff0c 4132 223480824783 c29f ffe6 c011 c036 ff0c c133 223481801231 429f ffe5 c013 c036 ff0d 4133 223482779102 429f ffe5 c012 c035 ff0c 4133 223483754224 429f ffe5 c012 c036 ff0d 4133 223484730442 c29d ffe5 c012 c036 ff0d c133 223485707336 429d ffe5 c012 c036 ff0d 4133 223486683912 429d ffe4 c013 c035 ff0d 4133 223487661479 429d ffe5 c012 c036 ff0d 4133 223488636705 c29f ffe6 c012 c035 ff0d c132 223489613257 429f ffe6 c012 c034 ff0d 4132 223490589761 429f ffe4 c013 c034 ff0d 4132 223491567496 429f ffe6 c011 c034 ff0c 4132 223492542674 c29f ffe6 c012 c035 ff0c c132 223493519154 429f ffe6 c011 c036 ff0c 4132 223494495594 429f ffe5 c012 c035 ff0c 4132 223495473713 429f ffe5 c011 c035 ff0c 4132 223496448667 c29d ffe5 c011 c036 ff0c c133 223497425123 429d ffe5 c012 c035 ff0c 4133 223498401811 429d ffe4 c013 c036 ff0c 4133 223499379714 429d ffe5 c012 c037 ff0c 4133 223500354652 c29f ffe5 c012 c036 ff0c c133 223501331292 429f ffe5 c012 c036 ff0c 4133 223502307732 429f ffe6 c012 c035 ff0c 4133 223503285571 429f ffe4 c013 c035 ff0d 4133 223504260813 c29b ffe5 c012 c036 ff0d c130 223505237181 429b ffe6 c012 c035 ff0d 4130 223506213765 429b ffe4 c013 c035 ff0d 4130 223507191396 429b ffe5 c013 c035 ff0c 4130 223508166646 c29d ffe6 c012 c035 ff0d c133 223509143294 429d ffe6 c012 c034 ff0d 4133 223510119686 429d ffe5 c012 c035 ff0d 4133 223511097549 429d ffe5 c013 c034 ff0d 4133 223512072687 c29f ffe6 c011 c035 ff0c c133 223513049367 429f ffe5 c012 c036 ff0c 4133 223514025775 429f ffe5 c012 c035 ff0c 4133 223515003422 429f ffe5 c012 c034 ff0c 4133 223515978976 c29d ffe4 c012 c037 ff0c c131 223516955360 429d ffe3 c013 c036 ff0c 4131 223517931808 429d ffe4 c014 c037 ff0c 4131 223518909719 429d ffe4 c013 c036 ff0c 4131 223519884929 c2a1 ffe6 c012 c036 ff0c c133 223520861249 42a1 ffe5 c012 c036 ff0d 4133 223521838041 42a1 ffe5 c013 c035 ff0c 4133 223522815616 42a1 ffe5 c012 c035 ff0d 4133 223523790970 c29f ffe6 c012 c036 ff0d c133 223524767354 429f ffe6 c012 c036 ff0d 4133 223525743786 429f ffe6 c012 c036 ff0d 4133 223526731713 429f ffe5 c013 c036 ff0d 4133 223527697043 c29f ffe5 c012 c033 ff0d c133 223528673323 429f ffe6 c012 c033 ff0d 4133 223529650043 429f ffe6 c012 c034 ff0d 4133 223530626347 429f ffe4 c013 c034 ff0d 4133 223531604474 c29f ffe6 c012 c036 ff0c c133 223532579412 429f ffe6 c011 c036 ff0c 4133 223533555804 429f ffe5 c012 c036 ff0c 4133 223534532420 429f ffe5 c012 c035 ff0c 4133 223535510331 c29f ffe5 c011 c035 ff0c c133 223536485445 root:/>
The ring is triggered by interrupts, after using ring, you will find interrupt number of adis16260 is increased:
root:/> cat /proc/interrupts 6: 68795 CORE Blackfin CoreTimer 10: 1 INTN rtc-bfin 18: 8 INTN BFIN_UART_RX 19: 640 INTN BFIN_UART_TX 24: 96 INTN EMAC_RX 54: 148 GPIO adis16240 NMI: 0 CORE Non Maskable Interrupt Err: 0
resources/tools-software/linux-drivers/iio-accelerometer/adis16240.1304716514.txt.gz · Last modified: 06 May 2011 23:15 by andyr