nrf5/modules: Adding new python script to initialize and clear the display on Seeedstudio 2.8 TFT Touch Shield v2.

2016-12-27 15:47:55 +01:00 · 2016-12-27 15:47:55 +01:00 · cceea0a504
commit cceea0a504
parent db994e2ec0
1 changed files with 150 additions and 0 deletions
--- a/nrf5/modules/seeedstudio_tft_shield_v2.py
+++ b/nrf5/modules/seeedstudio_tft_shield_v2.py
@ -0,0 +1,150 @@
+# MicroPython Seeedstudio TFT Shield V2 driver, SPI interfaces, Analog GPIO
+# Contains SD-card reader, LCD and Touch sensor
+
+import time
+from machine import SPI, Pin
+
+class ILI9341:
+    def __init__(self, width, height):
+        self.width = width
+        self.height = height
+        self.spi = SPI(0)
+        # chip select
+        self.cs = Pin("A16", mode=Pin.OUT, pull=Pin.PULL_UP)
+        # command
+        self.dc = Pin("A17", mode=Pin.OUT, pull=Pin.PULL_UP)
+        
+        # initialize all pins high
+        self.cs.high()
+        self.dc.high()
+
+        self.spi.init(baudrate=1000000, phase=0, polarity=0)
+
+        self.init_display()
+        
+
+    def init_display(self):
+        time.sleep_ms(500)
+        
+        self.write_cmd(0x01)
+        
+        time.sleep_ms(200)
+    
+        self.write_cmd(0xCF)
+        self.write_data(bytearray([0x00, 0x8B, 0x30]))
+    
+        self.write_cmd(0xED)
+        self.write_data(bytearray([0x67, 0x03, 0x12, 0x81]))
+
+        self.write_cmd(0xE8)
+        self.write_data(bytearray([0x85, 0x10, 0x7A]))
+    
+        self.write_cmd(0xCB)
+        self.write_data(bytearray([0x39, 0x2C, 0x00, 0x34, 0x02]))
+    
+        self.write_cmd(0xF7)
+        self.write_data(bytearray([0x20]))
+
+        self.write_cmd(0xEA)
+        self.write_data(bytearray([0x00, 0x00]))
+
+        # Power control
+        self.write_cmd(0xC0)
+        # VRH[5:0]
+        self.write_data(bytearray([0x1B]))
+        
+        # Power control
+        self.write_cmd(0xC1)
+        # SAP[2:0];BT[3:0]
+        self.write_data(bytearray([0x10]))
+        
+        # VCM control
+        self.write_cmd(0xC5)
+        self.write_data(bytearray([0x3F, 0x3C]))
+    
+        # VCM control2
+        self.write_cmd(0xC7)
+        self.write_data(bytearray([0xB7]))
+    
+        # Memory Access Control
+        self.write_cmd(0x36)
+        self.write_data(bytearray([0x08]))
+    
+        self.write_cmd(0x3A)
+        self.write_data(bytearray([0x55]))
+    
+        self.write_cmd(0xB1)
+        self.write_data(bytearray([0x00, 0x1B]))
+        
+        # Display Function Control
+        self.write_cmd(0xB6)
+        self.write_data(bytearray([0x0A, 0xA2]))
+    
+        # 3Gamma Function Disable
+        self.write_cmd(0xF2)
+        self.write_data(bytearray([0x00]))
+        
+        # Gamma curve selected
+        self.write_cmd(0x26)
+        self.write_data(bytearray([0x01]))
+    
+        # Set Gamma
+        self.write_cmd(0xE0)
+        self.write_data(bytearray([0x0F, 0x2A, 0x28, 0x08, 0x0E, 0x08, 0x54, 0XA9, 0x43, 0x0A, 0x0F, 0x00, 0x00, 0x00, 0x00]))
+    
+        # Set Gamma
+        self.write_cmd(0XE1)
+        self.write_data(bytearray([0x00, 0x15, 0x17, 0x07, 0x11, 0x06, 0x2B, 0x56, 0x3C, 0x05, 0x10, 0x0F, 0x3F, 0x3F, 0x0F]))
+        
+        # Exit Sleep
+        self.write_cmd(0x11)
+        time.sleep_ms(120)
+        
+        # Display on
+        self.write_cmd(0x29)
+        time.sleep_ms(500)
+        self.fill(0)
+    
+    def fill(self, col):
+        
+        # set col
+        self.write_cmd(0x2A)
+        self.write_data(bytearray([0x00, 0x00]));
+        self.write_data(bytearray([0x00, 0xef]));
+        
+        # set page 
+        self.write_cmd(0x2B)
+        self.write_data(bytearray([0x00, 0x00]));
+        self.write_data(bytearray([0x01, 0x3f]));
+        
+        self.write_cmd(0x2c);
+        
+        self.dc.high()
+        self.cs.low()
+        for i in range(0, self.width):
+            for j in range(0, self.height):
+                a = bytearray([col, col])
+                self.spi.write(a)
+        self.cs.high()
+
+    def pixel(self, x, y, col):
+        pass
+
+    def scroll(self, dx, dy):
+        pass
+
+    def text(self, string, x, y, col=1):
+        pass
+
+    def write_cmd(self, cmd):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([cmd]))
+        self.cs.high()
+        
+    def write_data(self, buf):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(buf)
+        self.cs.high()
+