add pindefs for tft and tft control

Author: brentru

ports/atmel-samd/boards/pyportal_titano/board.c

@@ -28,6 +28,9 @@
 #include "mpconfigboard.h"
 #include "hal/include/hal_gpio.h"
 
+#include "shared-bindings/busio/SPI.h"
+#include "shared-bindings/displayio/FourWire.h"
+
 #include "shared-module/displayio/__init__.h"
 #include "shared-module/displayio/mipi_constants.h"
 
@@ -36,49 +39,50 @@
 #define DELAY 0x80
 
 uint8_t display_init_sequence[] = {
-    0xEF, 3, 0x03, 0x80, 0x02,
-    0xCF, 3, 0x00, 0xC1, 0x30,
-    0xED, 4, 0x64, 0x03, 0x12, 0x81,
-    0xE8, 3, 0x85, 0x00, 0x78,
-    0xCB, 5, 0x39, 0x2C, 0x00, 0x34, 0x02,
-    0xF7, 1, 0x20,
-    0xEA, 2, 0x00, 0x00,
-    0xc0, 1, 0x23,             // Power control VRH[5:0]
-    0xc1, 1, 0x10,             // Power control SAP[2:0];BT[3:0]
-    0xc5, 2, 0x3e, 0x28,       // VCM control
-    0xc7, 1, 0x86,             // VCM control2
-    0x36, 1, 0xa8,             // Memory Access Control
-    0x37, 1, 0x00,             // Vertical scroll zero
-    0x3a, 1, 0x55,             // COLMOD: Pixel Format Set
-    0xb1, 2, 0x00, 0x18,       // Frame Rate Control (In Normal Mode/Full Colors)
-    0xb6, 3, 0x08, 0xa2, 0x27, // Display Function Control
-    0xF2, 1, 0x00,                         // 3Gamma Function Disable
-    0x26, 1, 0x01,             // Gamma curve selected
-    0xe0, 15, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, // Set Gamma
-      0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
-    0xe1, 15, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, // Set Gamma
-      0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
-    0x11, DELAY, 120,                // Exit Sleep
-    0x29, DELAY, 120, // Display on
+    0x01, 2, 0x80, 0x64, // swreset
+    0xB9, 5, 0x83, 0xFF, 0x83, 0x57, 0xFF,
+    0xB3, 5, 0x04, 0x80, 0x00, 0x06, 0x06,
+    0xB6, 2, 0x01, 0x25,
+    0xCC, 2, 0x01, 0x05,
+    0xB1, 7,
+        0x06, 0x00, 0x15, 0x1C, 0x1C, 0x83, 0xAA,
+    0xC0, 7,
+        0x06, 0x50, 0x50, 0x01, 0x3C, 0x1E, 0x08,
+    0xB4, 8,
+        0x07, 0x02, 0x40, 0x00, 0x2A, 0x2A, 0x0D, 0x78,
+    0xE0, 34,
+      0x02, 0x0A, 0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b,
+      0x42, 0x3A, 0x27, 0x1B, 0x08, 0x09, 0x03, 0x02, 0x0A,
+      0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b, 0x42, 0x3A,
+      0x27, 0x1B, 0x08, 0x09, 0x03, 0x00, 0x01,
+    0x3a, 1, 0x55,
+    0x36, 1, 0xC0,
+    0x35, 1, 0x00, 
+    0x44, 2, 0x00, 0x02,
+    0x11, 0x80 + 150/5, // Exit Sleep, then delay 150 ms
+    0x29, 0x80 +  50/5
 };
 
 void board_init(void) {
-    displayio_parallelbus_obj_t* bus = &displays[0].parallel_bus;
-    bus->base.type = &displayio_parallelbus_type;
-    common_hal_displayio_parallelbus_construct(bus,
-        &pin_PA16, // Data0
-        &pin_PB05, // Command or data
-        &pin_PB06, // Chip select
-        &pin_PB09, // Write
-        &pin_PB04, // Read
-        &pin_PA00); // Reset
+    busio_spi_obj_t* spi = &displays[0].fourwire_bus.inline_bus;
+    common_hal_busio_spi_construct(spi, &pin_PA13, &pin_PA12, &pin_PA14);
+    common_hal_busio_spi_never_reset(spi);
+    
+    displayio_fourwire_obj_t* bus = &displays[0].fourwire_bus;
+    bus->base.type = &displayio_fourwire_type;
+    common_hal_displayio_fourwire_construct(bus,
+        spi,
+        &pin_PB05, // TFT_DC Command or data
+        &pin_PB06, // TFT_CS Chip select
+        &pin_PA00, // TFT_RST Reset
+        24000000);
 
     displayio_display_obj_t* display = &displays[0].display;
     display->base.type = &displayio_display_type;
     common_hal_displayio_display_construct(display,
         bus,
         320, // Width
-        240, // Height
+        480, // Height
         0, // column start
         0, // row start
         0, // rotation

ports/atmel-samd/boards/pyportal_titano/pins.c

@@ -80,6 +80,15 @@ STATIC const mp_rom_map_elem_t board_global_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
     { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
 
+    // TFT control pins
+    {MP_OBJ_NEW_QSTR(MP_QSTR_TFT_LITE), MP_ROM_PTR(&pin_PB31)},
+    {MP_OBJ_NEW_QSTR(MP_QSTR_TFT_MOSI), MP_ROM_PTR(&pin_PA12)},
+    {MP_OBJ_NEW_QSTR(MP_QSTR_TFT_SCK), MP_ROM_PTR(&pin_PA13)},
+    {MP_OBJ_NEW_QSTR(MP_QSTR_TFT_MISO), MP_ROM_PTR(&pin_PA14)},
+    {MP_OBJ_NEW_QSTR(MP_QSTR_TFT_RST), MP_ROM_PTR(&pin_PA00)},
+    {MP_ROM_QSTR(MP_QSTR_TFT_CS), MP_ROM_PTR(&pin_PB06)},
+    {MP_ROM_QSTR(MP_QSTR_TFT_DC), MP_ROM_PTR(&pin_PB05)},
+
     { MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&displays[0].display) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_global_dict_table);