# HG changeset patch
# User Christophe Lincoln <pankso@slitaz.org>
# Date 1398364982 -7200
# Node ID 7b9df94be9aa90c3dc5b18eae3682e156e42c53a
# Parent  cbb88e36289419a57cfe68b7f9ad4cf96f4692f1
Improve pyglow support

diff -r cbb88e362894 -r 7b9df94be9aa python-rpi-pyglow/receipt
--- a/python-rpi-pyglow/receipt	Thu Apr 24 18:23:05 2014 +0200
+++ b/python-rpi-pyglow/receipt	Thu Apr 24 20:43:02 2014 +0200
@@ -21,5 +21,6 @@
 	mkdir -p $fs/${pylibs} $fs/usr/share $fs/usr/bin
 	cp -a ${src}/pyglow.py $fs/${pylibs}
 	cp -a ${src}/examples $fs/usr/share/pyglow
+	cp ${stuff}/vortex.py $fs/usr/share/pyglow
 	cp ${stuff}/pyglow $fs/usr/bin
 }
diff -r cbb88e362894 -r 7b9df94be9aa python-rpi-pyglow/stuff/pyglow
--- a/python-rpi-pyglow/stuff/pyglow	Thu Apr 24 18:23:05 2014 +0200
+++ b/python-rpi-pyglow/stuff/pyglow	Thu Apr 24 20:43:02 2014 +0200
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Tiny wrapper to Python Pyglow examples
+# Tiny wrapper to Python Pimorini (vortex.py) and Pyglow examples
 #
 
 ex="/usr/share/pyglow"
@@ -11,16 +11,18 @@
 fi
 
 case "$1" in
+	'test') 
+		python ${ex}/test.py ;;
 	cpu) 
 		python ${ex}/cpu.py ;;
 	clock) 
 		python ${ex}/clock.py ;;
 	set-leds) 
 		python ${ex}/set_leds.py ;;
-	'test') 
-		python ${ex}/test.py ;;
+	vortex)
+		python ${ex}/vortex.py ;;
 	*) 
-		echo "Usage: $(basename $0) [test|cpu|clock|set-leds]" ;;
+		echo "Usage: $(basename $0) [test|cpu|clock|set-leds|vortex]" ;;
 esac
 
 exit 0
diff -r cbb88e362894 -r 7b9df94be9aa python-rpi-pyglow/stuff/vortex.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python-rpi-pyglow/stuff/vortex.py	Thu Apr 24 20:43:02 2014 +0200
@@ -0,0 +1,71 @@
+# Sample script for PiGlow that creates a continuous whirly vortex animation
+#
+# Please see our GitHub repository for more information: https://github.com/pimoroni/piglow
+#
+# Once running you'll need to press ctrl-C to cancel stop the script
+
+import time
+from smbus import SMBus
+
+# command register addresses for the SN3218 IC used in PiGlow
+CMD_ENABLE_OUTPUT = 0x00
+CMD_ENABLE_LEDS = 0x13
+CMD_SET_PWM_VALUES = 0x01
+CMD_UPDATE = 0x16
+
+class PiGlow:
+	i2c_addr = 0x54 # fixed i2c address of SN3218 ic
+	bus = None
+
+	def __init__(self, i2c_bus=1):
+		self.bus = SMBus(i2c_bus)
+
+        # first we tell the SN3218 to enable output (turn on)
+		self.write_i2c(CMD_ENABLE_OUTPUT, 0x01)
+
+        # then we ask it to enable each bank of LEDs (0-5, 6-11, and 12-17)
+		self.write_i2c(CMD_ENABLE_LEDS, [0xFF, 0xFF, 0xFF])
+
+	def update_leds(self, values):
+		print "update pwm"
+		self.write_i2c(CMD_SET_PWM_VALUES, values)
+		self.write_i2c(CMD_UPDATE, 0xFF)
+
+	# a helper that writes the given value or list of values to the SN3218 IC
+	# over the i2c protocol
+	def write_i2c(self, reg_addr, value):
+        # if a single value is provided then wrap it in a list so we can treat
+        # all writes in teh same way
+		if not isinstance(value, list):
+			value = [value];
+
+        # write the data to the SN3218
+		self.bus.write_i2c_block_data(self.i2c_addr, reg_addr, value)
+
+# a list of 18 values between 0 - 255 that represent each LED on the PiGlow.
+# to change the LEDs we set the values in this array and then pass it to the
+# update_leds() function to actually update the LDEs
+values = [0x01,0x02,0x04,0x08,0x10,0x18,0x20,0x30,0x40,0x50,0x60,0x70,0x80,0x90,0xA0,0xC0,0xE0,0xFF]
+
+# create an instance of our PiGlow class and tell it that "1" is the I2C bus
+# index (should be 0 for old old old Pis)
+piglow = PiGlow(1)
+
+# loop forever, i mean why would we ever want to stop now the party has started?
+# you can however use Ctrl+C to stop the script and reset the LEDs to off state
+try:
+        while True:
+                # pop the first value off then drop it back on again - this just cycles the values around
+                values.append(values.pop(0))
+
+                # update the piglow with current values
+                piglow.update_leds(values)
+
+                # sleep for a bit, don't go too fast!
+                time.sleep(0.1)
+                
+except KeyboardInterrupt:
+	# set all the LEDs to "off" when Ctrl+C is pressed before exiting
+        values = [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+        piglow.update_leds(values)
+
diff -r cbb88e362894 -r 7b9df94be9aa slitaz-arm-configs/receipt
--- a/slitaz-arm-configs/receipt	Thu Apr 24 18:23:05 2014 +0200
+++ b/slitaz-arm-configs/receipt	Thu Apr 24 20:43:02 2014 +0200
@@ -1,7 +1,7 @@
 # SliTaz package receipt.
 
 PACKAGE="slitaz-arm-configs"
-VERSION="0.4"
+VERSION="0.5"
 CATEGORY="base-system"
 SHORT_DESC="SliTaz ARM config files and artwork."
 MAINTAINER="pankso@slitaz.org"