IoTGateway/Features/Linux/Peripheral - Revision history

Clayder.huang at 09:31, 9 December 2021

2021-12-09T09:31:09Z

Tim.liang at 06:52, 4 November 2021

2021-11-04T06:52:25Z

Tim.liang at 06:50, 4 November 2021

2021-11-04T06:50:40Z

Tim.liang at 02:29, 22 April 2020

2020-04-22T02:29:00Z

Tim.liang at 08:59, 31 October 2018

2018-10-31T08:59:43Z

Tim.liang at 05:51, 31 October 2018

2018-10-31T05:51:44Z

Tim.liang at 08:14, 9 January 2018

2018-01-09T08:14:08Z

Tim.liang at 05:17, 26 December 2017

2017-12-26T05:17:15Z

Tim.liang at 02:31, 6 December 2017

2017-12-06T02:31:10Z

Tim.liang at 02:24, 6 December 2017

2017-12-06T02:24:50Z

@@ Line 268: / Line 268: @@
   [  3] 50.0-60.0 sec   542 MBytes   455 Mbits/sec
   [  3]  0.0-60.0 sec  3.23 GBytes   462 Mbits/sec
 == Framebuffer ==

@@ Line 813: / Line 813: @@
 modify dts file to enable rs-485 at boot time.
 <syntaxhighlight lang="c">
 &uart1 {
@@ Line 824: / Line 826: @@
 };
 </syntaxhighlight>
 And setup '''minicom''' on our device and PC

@@ Line 795: / Line 795: @@
 === RS-485 ===
 ==== Configuration ====
 Connect D+ and D- to ADAM-4520
 Use [[:File:enable485.zip]] to enable rs-485 function via ioctl
 Copy enable485 to our device
 And setup '''minicom''' on our device and PC
 *Turn off hardware flow control
 *Baudrate 115200

@@ Line 42: / Line 42: @@
 [imxhdmisoc     ]: imx-hdmi-soc - imx-hdmi-soc
                        imx-hdmi-soc
 === Record ===

← Older revision		Revision as of 08:59, 31 October 2018
Line 211:		Line 211:
	current CPU frequency is 792 MHz (asserted by call to hardware).		current CPU frequency is 792 MHz (asserted by call to hardware).

−	~~Disable CPU throttling~~

−	~~# echo "disabled" > /sys/devices/virtual/thermal/thermal_zone0/mode~~	+

← Older revision		Revision as of 05:51, 31 October 2018
Line 211:		Line 211:
	current CPU frequency is 792 MHz (asserted by call to hardware).		current CPU frequency is 792 MHz (asserted by call to hardware).

		+	Disable CPU throttling
		+
		+	# echo "disabled" > /sys/devices/virtual/thermal/thermal_zone0/mode

@@ Line 348: / Line 348: @@
   # echo 27 > /sys/class/gpio/export
-Set GPIO direction to in/out . &nbsp; Note: gpio27 will be export to gpio1&nbsp;
+Set GPIO direction to in/out . &nbsp;
-  # echo "in" > /sys/class/gpio/gpio27/direction
+Note: gpio27 will be export to gpio1&nbsp;
 Set GPIO value 0/1 if GPIO pin define is output
-  #  echo 1 > /sys/class/gpio/gpio27/value
+  #  echo 1 > /sys/class/gpio/gpio1/value
 Directly force a GPIO to output and set its initial value(high=1 low=0)&nbsp;
-  # echo high > /sys/class/gpio/gpio27/direction
+  # echo high > /sys/class/gpio/gpio1/direction
 Used as IRQ signal
@@ Line 364: / Line 368: @@
 Note:You have to configure GPIO to input
-  #  echo "rising" > /sys/class/gpio/gpio27/edge
+  #  echo "rising" > /sys/class/gpio/gpio1/edge
 *rising: Trigger on rising edge
@@ Line 387: / Line 391: @@
 *Set GPIO 27 to output
-  # echo "out" > /sys/class/gpio/gpio27/direction
+  # echo "out" > /sys/class/gpio/gpio1/direction
 *Set GPIO 29 to input
-  # echo "in" > /sys/class/gpio/gpio29/direction
+  # echo "in" > /sys/class/gpio/gpio2/direction
 *Change GPIO 27 to 1 and read GPIO 29 value
-  # echo 1 > /sys/class/gpio/gpio27/value
+  # echo 1 > /sys/class/gpio/gpio1/value
-  # cat /sys/class/gpio/gpio29/value
+  # cat /sys/class/gpio/gpio2/value
 *Change GPIO 27 to 0 and read GPIO 29 value
-  # echo 0 > /sys/class/gpio/gpio27/value
+  # echo 0 > /sys/class/gpio/gpio1/value
-  # cat /sys/class/gpio/gpio29/value
+  # cat /sys/class/gpio/gpio2/value

@@ Line 782: / Line 782: @@
   #echo test > /dev/ttymxc1
   test
 == USB ==

← Older revision		Revision as of 02:31, 6 December 2017
Line 882:		Line 882:

	== Led ==		== Led ==
		+
		+	If we have already defined Leds, we can see leds label as below
		+	# ls /sys/class/leds/
		+	Green_Led Red_Led mmc1:: mmc2:: mmc3::
		+
		+	Red_Led is taken as an example:
		+	*turn off
		+	# echo 0 > /sys/class/leds/Red_Led/brightness
		+	*turn on
		+	# echo 255 > /sys/class/leds/Red_Led/brightness

@@ Line 722: / Line 722: @@
 *::[[File:SPI boot up to verify.png|800px|SPI boot up to verify.png]]
 *:write some special data for u-boot test
-<div style="margin-left: 5em;">
+<div style="margin-left: 5em;"><syntaxhighlight lang="bash">
 $ echo "This is a mtd1." | dd of=/dev/mtdblock1 bs=1 seek=0 2>/dev/null
 $ echo "This is a mtd2." | dd of=/dev/mtdblock2 bs=1 seek=0 2>/dev/null
 $ dd if=/dev/mtdblock1 bs=1 count=32 2>/dev/null | hexdump -C
 $ dd if=/dev/mtdblock2 bs=1 count=32 2>/dev/null | hexdump -C
-</syntaxhighlight>[[File:SPI write data for u-boot test.png|600px|SPI write data for u-boot test.png]] </div>
+</syntaxhighlight>[[File:SPI write data for u-boot test.png|600px|SPI write data for u-boot test.png]]</div>
 *u-boot
 *:patch u-boot by [[Media:u-boot-2009.08_spi5_w25q64.patch|u-boot-2009.08_spi5_w25q64.patch]]
 *:rebuild the u-boot image
 *:practical test
-<div style="margin-left: 5em;">
+<div style="margin-left: 5em;"><syntaxhighlight lang="bash">
 > sf probe 4:0; sf read 0x10800000 0 10; md.b 0x10800000 10
 > sf probe 4:1; sf read 0x10800000 0 10; md.b 0x10800000 10
-</syntaxhighlight>[[File:SPI u-boot verify.png|600px|SPI u-boot verify.png]] </div>
+</syntaxhighlight>[[File:SPI u-boot verify.png|600px|SPI u-boot verify.png]]</div>
 == SPWG/JEDIA ==
@@ Line 884: / Line 880: @@
-== LED ==