# daisy.py
#
# Python collection of class that allows to easily manage the Daisy 
# building modules made by Acme Systems srl.
# http://www.acmesystems.it/foxg20
#
# (C) 2010 Sergio Tanzilli <tanzilli@acmesystems.it>
#
# Version 14 january 2010
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

import os.path

D1_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  70, #PB6
	'3' :  71, #PB7
	'4' :  92, #PB28
	'5' :  93, #PB29
	'6' :   0, #N.C.
	'7' :  55, #PA23
	'8' :  56, #PA24
	'9' :   0, #5V0
	'10':   0, #GND
}

D2_kernel_ids = {
	'1' :   0, #3V3
	'2' :  63, #PA31
	'3' :  62, #PA30
	'4' :  61, #PA29
	'5' :  60, #PA28
	'6' :  59, #PA27
	'7' :  58, #PA26
	'8' :  57, #PA25
	'9' :  94, #PB30
	'10':   0, #GND
}

D3_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  68, #PB4
	'3' :  69, #PB5
	'4' :  90, #PB26
	'5' :  91, #PB27
	'6' :  86, #PB22
	'7' :  88, #PB24
	'8' :  89, #PB25
	'9' :  87, #PB23
	'10':  0,  #GND
}

D4_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  0, #AVDD
	'3' :  0, #VREF
	'4' :  0, #AGND
	'5' :  96, #PC0
	'6' :  97, #PC1
	'7' :  98, #PC2
	'8' :  99, #PC3
	'9' :  0,  #5V0
	'10':  0,  #GND
}


D5_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  76, #PB12
	'3' :  77, #PB13
	'4' :  80, #PB16
	'5' :  81, #PB17
	'6' :  82, #PB18
	'7' :  83, #PB19
	'8' :  84, #PB20
	'9' :  85, #PB21
	'10':  0,  #GND
}

D6_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  74, #PB10
	'3' :  75, #PB11
	'4' : 104, #PC8
	'5' : 106, #PC10
	'6' :  95, #PB31
	'7' :  55, #PA23
	'8' :  56, #PA24
	'9' :   0, #5V0
	'10':   0, #GND
}

D7_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  65, #PB1
	'3' :  64, #PB0
	'4' :  66, #PB2
	'5' :  67, #PB3
	'6' : 101, #PC5
	'7' : 100, #PC4
	'8' :  99, #PC3
	'9' :   0, #5V0
	'10':   0, #GND
}

D8_kernel_ids = {
	'1' :  0,  #3V3
	'2' :  72, #PB8
	'3' :  73, #PB9
	'4' :   0, #N.C.
	'5' :   0, #N.C.
	'6' :   0, #N.C.
	'7' :  55, #PA23
	'8' :  56, #PA24
	'9' :   0, #5V0
	'10':   0, #GND
}

daisy_connectors = {
	'D1' :  D1_kernel_ids,
	'D2' :  D2_kernel_ids,
	'D3' :  D3_kernel_ids,
	'D4' :  D4_kernel_ids,
	'D5' :  D5_kernel_ids,
	'D6' :  D6_kernel_ids,
	'D7' :  D7_kernel_ids,
	'D8' :  D8_kernel_ids,
}


def get_kernel_id(daisy_connector_name,pin_number):
	return daisy_connectors[daisy_connector_name][pin_number]

def export(kernel_id):
	iopath='/sys/class/gpio/gpio' + str(kernel_id)
	if not os.path.exists(iopath): 
		f = open('/sys/class/gpio/export','w')
		f.write(str(kernel_id))
		f.close()

def direction(kernel_id,direction):
	iopath='/sys/class/gpio/gpio' + str(kernel_id)
	if os.path.exists(iopath): 
		f = open(iopath + '/direction','w')
		f.write(direction)
		f.close()

def set_value(kernel_id,value):
	iopath='/sys/class/gpio/gpio' + str(kernel_id)
	if os.path.exists(iopath): 
		f = open(iopath + '/value','w')
		f.write(str(value))
		f.close()

def get_value(kernel_id):
	if kernel_id<>-1:
		iopath='/sys/class/gpio/gpio' + str(kernel_id)
		if os.path.exists(iopath): 
			f = open(iopath + '/value','r')
			a=f.read()
			f.close()
			return int(a)

class Daisy5():

	"""
	DAISY-5 (8 pushbuttons) related class
	http://foxg20.acmesystems.it/doku.php?id=daisy:daisy5_pushbuttons
	"""
	kernel_id=-1

	buttons = {
		'P1' :  '2',
		'P2' :  '3',
		'P3' :  '4',
		'P4' :  '5',
		'P5' :  '6',
		'P6' :  '7',
		'P7' :  '8',
		'P8' :  '9',
	}

	def __init__(self,connector_id,button_id):
		pin=self.buttons[button_id]
		self.kernel_id = get_kernel_id(connector_id,pin)

		if (self.kernel_id!=0):
			export(self.kernel_id)
			direction(self.kernel_id,'in')

	def pressed(self):
		if self.kernel_id<>-1:
			iopath='/sys/class/gpio/gpio' + str(self.kernel_id)
			if os.path.exists(iopath): 
				f = open(iopath + '/value','r')
				a=f.read()
				f.close()
				if int(a)==0:
					return False
				else:
					return True
		return False

	def on(self):
		if self.handler_on!=0: 
			self.handler_on()

	def off(self):
		if self.handler_off!=0: 
			self.handler_off()

class Daisy11():

	"""
	DAISY-11 (8 led) related class
	http://foxg20.acmesystems.it/doku.php?id=daisy:daisy11_led	
	"""

	kernel_id=-1

	leds = {
		'L1' :  '2',
		'L2' :  '3',
		'L3' :  '4',
		'L4' :  '5',
		'L5' :  '6',
		'L6' :  '7',
		'L7' :  '8',
		'L8' :  '9',
	}

	def __init__(self,connector_id,led_id):
		pin=self.leds[led_id]
		self.kernel_id = get_kernel_id(connector_id,pin)

		if (self.kernel_id!=0):
			export(self.kernel_id)
			direction(self.kernel_id,'low')


	def on(self):
		if (self.kernel_id!=0):
			set_value(self.kernel_id,1)
		else:
			pass

		
	def off(self):
		if (self.kernel_id!=0):
			set_value(self.kernel_id,0)
		else:
			pass

	def get(self):
		if get_value(self.kernel_id):
			return True
		else:
			return False