adds 4th type to st7735 driver

Author: kdschlosser

api_drivers/common_api_drivers/display/st7735/_st7735_init_type4.py

@@ -0,0 +1,122 @@
+# Copyright (c) 2024 - 2025 Kevin G. Schlosser
+
+import time
+from micropython import const  # NOQA
+
+import lvgl as lv  # NOQA
+
+
+_NOP = const(0x00)
+_SWRESET = const(0x01)
+_RDDID = const(0x04)
+_RDDST = const(0x09)
+
+_SLPIN = const(0x10)
+_SLPOUT = const(0x11)
+_PTLON = const(0x12)
+_NORON = const(0x13)
+
+_DISPOFF = const(0x28)
+_DISPON = const(0x29)
+
+_PTLAR = const(0x30)
+_COLMOD = const(0x3A)
+_MADCTL = const(0x36)
+
+_FRMCTR1 = const(0xB1)
+_FRMCTR2 = const(0xB2)
+_FRMCTR3 = const(0xB3)
+_INVCTR = const(0xB4)
+_DISSET5 = const(0xB6)
+
+_PWCTR1 = const(0xC0)
+_PWCTR2 = const(0xC1)
+_PWCTR3 = const(0xC2)
+_PWCTR4 = const(0xC3)
+_PWCTR5 = const(0xC4)
+_VMCTR1 = const(0xC5)
+
+_PWCTR6 = const(0xFC)
+
+_GMCTRP1 = const(0xE0)
+_GMCTRN1 = const(0xE1)
+
+
+def init(self):
+    buf = bytearray(16)
+    mv = memoryview(buf)
+
+    self._reset()
+
+    self._writecommand(_SWRESET)
+    time.sleep_ms(50)  # NOQA
+
+    self._writecommand(_SLPOUT)
+    time.sleep_ms(255)  # NOQA
+
+    buf[:3] = bytearray([0x01, 0x2C, 0x2D])
+    self._writecommand(_FRMCTR1, mv[:3])
+    time.sleep_us(10)  # NOQA
+
+    self._writecommand(_FRMCTR2, mv[:3])
+    time.sleep_us(10)  # NOQA
+
+    self._writecommand(_FRMCTR3, mv[:3])
+    time.sleep_us(10)  # NOQA
+
+    buf[0] = 0x07
+    self._writecommand(_INVCTR, mv[:1])
+
+    buf[:3] = bytearray([0xA2, 0x02, 0x84])
+    self._writecommand(_PWCTR1, mv[:3])
+    time.sleep_us(10)  # NOQA
+
+    buf[0] = 0xC5
+    self._writecommand(_PWCTR2, mv[:1])
+
+    buf[:2] = bytearray([0x0A, 0x00])
+    self._writecommand(_PWCTR3, mv[:2])
+
+    buf[:2] = bytearray([0x8A, 0x2A])
+    self._writecommand(_PWCTR4, mv[:2])
+
+    buf[:2] = bytearray([0x8A, 0xEE])
+    self._writecommand(_PWCTR5, mv[:2])
+
+    buf[0] = 0x0E
+    self._writecommand(_VMCTR1, mv[:1])
+    time.sleep_us(10)  # NOQA
+
+    self._writecommand(_MADCTL, mv[:1])
+    buf[0] = 0xC8
+
+    buf[:16] = bytearray([0x02, 0x1c, 0x07, 0x12, 0x37, 0x32, 0x29, 0x2d,
+                          0x29, 0x25, 0x2b, 0x39, 0x00, 0x01, 0x03, 0x10])
+    self._writecommand(_GMCTRP1, mv[:16])
+
+    buf[:16] = bytearray([0x03, 0x1d, 0x07, 0x06, 0x2e, 0x2c, 0x29, 0x2d,
+                          0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00, 0x02, 0x10])
+    self._writecommand(_GMCTRN1, mv[:16])
+    time.sleep_us(10)  # NOQA
+
+    color_size = lv.color_format_get_size(self._color_space)
+    if color_size == 2:  # NOQA
+        pixel_format = 0x55
+    elif color_size == 3:
+        pixel_format = 0x77
+    else:
+        raise RuntimeError(
+            'ST7796 IC only supports '
+            'lv.COLOR_FORMAT.RGB565 or lv.COLOR_FORMAT.RGB888'
+        )
+
+    buf[0] = pixel_format
+    self.set_params(_COLMOD, mv[:1])
+
+    time.sleep_us(10)  # NOQA
+
+    self._writecommand(_NORON)
+    time.sleep_us(10)  # NOQA
+
+    self._writecommand(_DISPON)
+    time.sleep_us(500)  # NOQA

api_drivers/common_api_drivers/display/st7735/st7735.py

@@ -19,6 +19,7 @@
 TYPE_B = 1
 TYPE_R_RED = 2
 TYPE_R_GREEN = 3
+TYPE_R_BLUE = 4
 
 
 class ST7735(display_driver_framework.DisplayDriver):