switch to 8-bit mode - tested on hardware!

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

@@ -80,18 +80,15 @@ uint8_t display_init_sequence[] = {
 };
 
 void board_init(void) {
-    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_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
 
     displayio_display_obj_t* display = &displays[0].display;
     display->base.type = &displayio_display_type;

ports/atmel-samd/boards/pyportal_titano/mpconfigboard.h

@@ -3,7 +3,6 @@
 
 #define CIRCUITPY_MCU_FAMILY samd51
 
-
 #define MICROPY_HW_LED_STATUS   (&pin_PA27)
 
 #define MICROPY_HW_NEOPIXEL (&pin_PB22)

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

@@ -80,15 +80,6 @@ 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);