support enable-pin as DigitalInOut (Badger2040W compatibility)

Author: bablokb

ports/raspberrypi/boards/pimoroni_inky_frame_5_7/board.c

@@ -33,14 +33,17 @@
 #include "shared-module/displayio/__init__.h"
 #include "shared-bindings/board/__init__.h"
 #include "supervisor/shared/board.h"
+#include "inky-shared.h"
 
 #define DELAY 0x80
 
+digitalio_digitalinout_obj_t enable_pin_obj;
+
 // This is an SPD1656 control chip. The display is a 5.7" ACeP EInk.
 
 const uint8_t display_start_sequence[] = {
     0x01, 4, 0x37, 0x00, 0x23, 0x23, // power setting
-    0x00, 2, 0xef, 0x08, // panel setting (PSR)
+    0x00, 2, 0xe3, 0x08, // panel setting (PSR, 0xe3: no rotation)
     0x03, 1, 0x00, // PFS
     0x06, 3, 0xc7, 0xc7, 0x1d, // booster
     0x30, 1, 0x3c, // PLL setting
@@ -62,6 +65,14 @@ const uint8_t refresh_sequence[] = {
 };
 
 void board_init(void) {
+    // Drive the EN_3V3 pin high so the board stays awake on battery power
+    enable_pin_obj.base.type = &digitalio_digitalinout_type;
+    common_hal_digitalio_digitalinout_construct(&enable_pin_obj, &pin_GPIO2);
+    common_hal_digitalio_digitalinout_switch_to_output(&enable_pin_obj, true, DRIVE_MODE_PUSH_PULL);
+
+    // Never reset
+    common_hal_digitalio_digitalinout_never_reset(&enable_pin_obj);
+
     displayio_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus;
     busio_spi_obj_t *spi = common_hal_board_create_spi(0);
 
@@ -89,7 +100,7 @@ void board_init(void) {
         480,  // ram_height
         0,  // colstart
         0,  // rowstart
-        180,  // rotation
+        0,  // rotation
         NO_COMMAND,  // set_column_window_command
         NO_COMMAND,  // set_row_window_command
         NO_COMMAND,  // set_current_column_command

ports/raspberrypi/boards/pimoroni_inky_frame_5_7/inky-shared.h

@@ -0,0 +1,8 @@
+#ifndef PIMORONI_INKY_SHARED
+#define PIMORONI_INKY_SHARED
+
+#include "shared-bindings/digitalio/DigitalInOut.h"
+
+extern digitalio_digitalinout_obj_t enable_pin_obj;
+
+#endif // PIMORONI_INKY_SHARED

ports/raspberrypi/boards/pimoroni_inky_frame_5_7/pins.c

@@ -2,13 +2,13 @@
 
 #include "supervisor/board.h"
 #include "shared-module/displayio/__init__.h"
+#include "inky-shared.h"
 
 STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
 
     { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_GPIO0) },
     { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_GPIO1) },
-    { MP_ROM_QSTR(MP_QSTR_HOLD_SYS_EN), MP_ROM_PTR(&pin_GPIO2) },
     { MP_ROM_QSTR(MP_QSTR_I2C_INT), MP_ROM_PTR(&pin_GPIO3) },
 
     { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_GPIO4) },
@@ -48,5 +48,6 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&displays[0].epaper_display)},
+    { MP_ROM_QSTR(MP_QSTR_ENABLE_DIO), MP_ROM_PTR(&enable_pin_obj)},   // GP2
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);