Blinky and Button examples using Python - Revision history

Support: /* Examples using Python */

Support — Thu, 05 Aug 2010 16:03:44 GMT

Examples using Python

← Older revision		Revision as of 16:03, 5 August 2010
Line 3:		Line 3:
	The following application note covers the use of Electrum100's peripherals using Python. SYSFS method is used to access the GPIO's.		The following application note covers the use of Electrum100's peripherals using Python. SYSFS method is used to access the GPIO's.
	To create the interfaces for GPIO's under /sys/class/gpio/*, the following configuration has to be enabled in the board configuration file		To create the interfaces for GPIO's under /sys/class/gpio/*, the following configuration has to be enabled in the board configuration file
-	CONFIG_GPIO_SYSFS=Y	+	CONFIG_GPIO_SYSFS=y

	==Blinky Example==		==Blinky Example==

Support: /* Button Example */

Support — Wed, 04 Aug 2010 17:15:04 GMT

Button Example

← Older revision		Revision as of 17:15, 4 August 2010
Line 52:		Line 52:

	== Button Example==		== Button Example==
-	In Electrum100, GPIO PA31 is used for the ~~user~~ Button.	+	In Electrum100, GPIO PA31 is used for the User Button.
	import sys		import sys
	import time		import time

Support: /* Button Example */

Support — Tue, 03 Aug 2010 17:15:26 GMT

Button Example

← Older revision		Revision as of 17:15, 3 August 2010
Line 52:		Line 52:

	== Button Example==		== Button Example==
		+	In Electrum100, GPIO PA31 is used for the user Button.
	import sys		import sys
	import time		import time

Support: /* Examples using Python */

Support — Tue, 03 Aug 2010 17:13:31 GMT

Examples using Python

← Older revision		Revision as of 17:13, 3 August 2010
Line 1:		Line 1:
	__TOC__		__TOC__
	=Examples using Python=		=Examples using Python=
-	The following application note covers the use of Electrum100's peripherals using Python. SYSFS method ~~has been~~ used to access the GPIO's.	+	The following application note covers the use of Electrum100's peripherals using Python. SYSFS method is used to access the GPIO's.
	To create the interfaces for GPIO's under /sys/class/gpio/*, the following configuration has to be enabled in the board configuration file		To create the interfaces for GPIO's under /sys/class/gpio/*, the following configuration has to be enabled in the board configuration file
	CONFIG_GPIO_SYSFS=Y		CONFIG_GPIO_SYSFS=Y
Line 24:		Line 24:
	};		};

-	And add the following lines in ek_board_init	+	And add the following lines in ek_board_init()
	/* LEDs */		/* LEDs */
	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));		at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));

Support: /* Blinky Example */

Support — Tue, 03 Aug 2010 17:12:17 GMT

Blinky Example

← Older revision		Revision as of 17:12, 3 August 2010
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	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));		at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));

-	'''Python ~~scrip~~ for Blinky Example:'''	+	'''Python script for Blinky Example:'''
	import sys		import sys
	import time		import time

Support: /* Blinky Example */

Support — Tue, 03 Aug 2010 17:11:55 GMT

Blinky Example

← Older revision		Revision as of 17:11, 3 August 2010
Line 28:		Line 28:
	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));		at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));

-	Python scrip for Blinky Example:	+	'''Python scrip for Blinky Example:'''
	import sys		import sys
	import time		import time

Support: /* Blinky Example */

Support — Tue, 03 Aug 2010 17:11:31 GMT

Blinky Example

← Older revision		Revision as of 17:11, 3 August 2010
Line 6:		Line 6:

	==Blinky Example==		==Blinky Example==
		+	User LED is connected to GPIO PA30. An interface for the user LED is created in the kernel by adding the following code in board-electrum-100.c
		+	/*
		+	* LEDs
		+	*/
		+	static struct gpio_led ek_leds[] = {
		+	{ /* led1, yellow */
		+	.name = "ds1",
		+	.gpio = AT91_PIN_PA25,
		+	.default_trigger = "heartbeat",
		+	},
		+	{ /* led2, green */
		+	.name = "ds2",
		+	.gpio = AT91_PIN_PA30,
		+	//.active_low = 1,
		+	.default_trigger = "none",
		+	}
		+	};
		+
		+	And add the following lines in ek_board_init
		+	/* LEDs */
		+	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
		+
		+	Python scrip for Blinky Example:
	import sys		import sys
	import time		import time

Support: /* Button Example */

Support — Tue, 03 Aug 2010 17:05:24 GMT

Button Example

← Older revision		Revision as of 17:05, 3 August 2010
Line 41:		Line 41:
	pin1export.close()		pin1export.close()
	except IOError:		except IOError:
-	print "INFO: GPIO 63 already Exists, so skipping export gpio"	+	print "INFO: GPIO 63 already Exists, skipping export gpio"

	def read_button():		def read_button():

Support: Created page with 'TOC =Examples using Python= The following application note covers the use of Electrum100's peripherals using Python. SYSFS method has been used to access the GPIO's. To creat…'

Support — Tue, 03 Aug 2010 17:04:29 GMT

Created page with '__TOC__ =Examples using Python= The following application note covers the use of Electrum100's peripherals using Python. SYSFS method has been used to access the GPIO's. To creat…'

New page

__TOC__
=Examples using Python=
The following application note covers the use of Electrum100's peripherals using Python. SYSFS method has been used to access the GPIO's.
To create the interfaces for GPIO's under /sys/class/gpio/*, the following configuration has to be enabled in the board configuration file
CONFIG_GPIO_SYSFS=Y

==Blinky Example==
import sys
import time

print "Blinking User LED"
print "Enter CTRL+C to exit"

def ledon():
value = open("/sys/class/leds/ds2/brightness","w")
value.write(str(1))
value.close()

def ledoff():
value = open("/sys/class/leds/ds2/brightness","w")
value.write(str(0))
value.close()

while True:
ledon()
time.sleep(.5)
ledoff()
time.sleep(.5)

== Button Example==
import sys
import time

print "Button Example"
print "Press CTRL + C to exit"

def pins_export():
try:
pin1export = open("/sys/class/gpio/export","w")
pin1export.write(str(63))
pin1export.close()
except IOError:
print "INFO: GPIO 63 already Exists, so skipping export gpio"

def read_button():
fp1 = open("/sys/class/gpio/gpio63/value","r")
value = fp1.read()
return value
fp1.close()

def write_led(value):
fp2 = open("/sys/class/leds/ds2/brightness","w")
fp2.write(str(value))
fp2.close()

pins_export()
while True:
button_value = read_button()
write_led(button_value)

Blinky and Button examples using Python - Revision history

Support: /* Examples using Python */

Support: /* Button Example */

Support: /* Button Example */

Support: /* Examples using Python */

Support: /* Blinky Example */

Support: /* Blinky Example */

Support: /* Blinky Example */

Support: /* Button Example */

Support: Created page with '__TOC__ =Examples using Python= The following application note covers the use of Electrum100's peripherals using Python. SYSFS method has been used to access the GPIO's. To creat…'

Support: Created page with 'TOC =Examples using Python= The following application note covers the use of Electrum100's peripherals using Python. SYSFS method has been used to access the GPIO's. To creat…'