split touch samples

add LED pin to driver

gfxlcd/demos/ili.py

@@ -31,6 +31,7 @@ def draw_net(o):
 
 
 drv = GPIO()
+drv.pins['LED'] = 6
 o = ILI9325(240, 320, drv)
 
 o.init()

gfxlcd/demos/ili_2.py

@@ -37,14 +37,11 @@ def draw_net(o):
         o.draw_line(0, s, o.width-1, s)
         s += 10
 
-
-lcd_tft = ILI9325(240, 320, ILIGPIO())
+drv = ILIGPIO()
+drv.pins['LED'] = 6
+lcd_tft = ILI9325(240, 320, drv)
 lcd_tft.init()
 
-# bypass of missing +3v line to power backlight
-LED = 6
-RPi.GPIO.setup(LED, RPi.GPIO.OUT)
-RPi.GPIO.output(LED, 1)
 lcd_tft.background_color = (255, 255, 255)
 lcd_tft.fill_rect(0, 0, 240, 320)
 lcd_tft.color = (0, 255, 1)

gfxlcd/demos/ili_image.py

@@ -7,13 +7,11 @@ from gfxlcd.driver.ili9325.ili9325 import ILI9325
 RPi.GPIO.setmode(RPi.GPIO.BCM)
 
 
-lcd_tft = ILI9325(240, 320, ILIGPIO())
+drv = ILIGPIO()
+drv.pins['LED'] = 6
+lcd_tft = ILI9325(240, 320, drv)
 lcd_tft.init()
 
-# bypass of missing +3v line to power backlight
-LED = 6
-RPi.GPIO.setup(LED, RPi.GPIO.OUT)
-RPi.GPIO.output(LED, 1)
 
 image_file = Image.open("assets/japan_temple_240x320.jpg")
 lcd_tft.draw_image(0, 0, image_file)

gfxlcd/demos/touch.py

@@ -4,7 +4,7 @@ import time
 sys.path.append("../../")
 from gfxlcd.driver.ili9325.gpio import GPIO as ILIGPIO
 from gfxlcd.driver.ili9325.ili9325 import ILI9325
-from gfxlcd.driver.ad7843.ad7853 import AD7843
+from gfxlcd.driver.ad7843.ad7843 import AD7843
 RPi.GPIO.setmode(RPi.GPIO.BCM)
 
 
@@ -21,10 +21,7 @@ touch.init()
 
 while True:
     try:
-        time.sleep(0.05)
-        # ret = touch.get_position()
-        # if ret:
-        #     print(ret[0], ret[1])
+        time.sleep(1)
 
     except KeyboardInterrupt:
         touch.close()

gfxlcd/demos/touch_loop.py

@@ -0,0 +1,32 @@
+import RPi.GPIO
+import sys
+import time
+sys.path.append("../../")
+from gfxlcd.driver.ili9325.gpio import GPIO as ILIGPIO
+from gfxlcd.driver.ili9325.ili9325 import ILI9325
+from gfxlcd.driver.ad7843.ad7843 import AD7843
+RPi.GPIO.setmode(RPi.GPIO.BCM)
+
+
+lcd_tft = ILI9325(240, 320, ILIGPIO())
+lcd_tft.init()
+
+
+def callback(position):
+    print('(x,y)', position)
+
+touch = AD7843(240, 320)
+
+touch.init()
+
+while True:
+    try:
+        time.sleep(0.05)
+        ret = touch.get_position()
+        if ret:
+            print(ret[0], ret[1])
+
+    except KeyboardInterrupt:
+        touch.close()
+        RPi.GPIO.cleanup()
+

gfxlcd/driver/ili9325/gpio.py

@@ -20,6 +20,8 @@ class GPIO(Driver):
             'DB14': 20,
             'DB15': 21,
             'RST': 25,
+            'LED': None,
+            'CS': None
         }
         self.data_pins = [
             'DB8', 'DB9', 'DB10', 'DB11', 'DB12', 'DB13', 'DB14', 'DB15',
@@ -28,11 +30,14 @@ class GPIO(Driver):
     def init(self):
         """initialize pins"""
         for pin in self.pins:
+            if self.pins[pin] is not None:
                 RPi.GPIO.setup(self.pins[pin], RPi.GPIO.OUT)
                 RPi.GPIO.output(self.pins[pin], 0)
 
     def reset(self):
         """reset a display"""
+        if self.pins['LED']:
+            RPi.GPIO.output(self.pins['LED'], 1)
         RPi.GPIO.output(self.pins['RST'], 1)
         time.sleep(0.005)
         RPi.GPIO.output(self.pins['RST'], 0)

readme.md

@@ -98,6 +98,8 @@ Custom pins:
         'DB14': 20,
         'DB15': 21,
         'RST': 25,
+        'LED': None,
+        'CS': None
     }
     o = ILI9325(240, 320, drv)
     o.init()
@@ -233,4 +235,4 @@ Default:
     DB15  ------------------------ G21
     CS    ------------------------ GND (always selected)
     REST  ------------------------ G25
-    LED_A ------------------------ 3.3
+    LED_A ------------------------ 3.3 (can be connected to GPIO pin)