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Add builtin display support with shared board.I2C to Lolin S2 Pico

This commit is contained in:
Neradoc 2023-03-14 19:02:41 +01:00
parent 9c1d83476e
commit b88e76d3a4
2 changed files with 71 additions and 0 deletions
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68
ports/espressif/boards/lolin_s2_pico/board.c
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@ -27,8 +27,76 @@
#include "supervisor/board.h"
#include "mpconfigboard.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/board/__init__.h"
#include "shared-bindings/displayio/I2CDisplay.h"
#include "shared-module/displayio/__init__.h"
#include "shared-module/displayio/mipi_constants.h"
#include "shared-bindings/busio/I2C.h"
#include "supervisor/shared/board.h"
#include "shared-bindings/board/__init__.h"
uint8_t display_init_sequence[] = { // SSD1306
0xAE, 0, // DISPLAY_OFF
0x20, 1, 0x00, // Set memory addressing to horizontal mode.
0x81, 1, 0xcf, // set contrast control
0xA1, 0, // Column 127 is segment 0
0xA6, 0, // Normal display
0xc8, 0, // Normal display
0xA8, 1, 0x1f, // Mux ratio is height-1
0xd5, 1, 0x80, // Set divide ratio
0xd9, 1, 0xf1, // Set pre-charge period
0xda, 1, 0x02, // Set com configuration to 2 if height is 32 and width not 64
0xdb, 1, 0x40, // Set vcom configuration
0x8d, 1, 0x14, // Enable charge pump
0xAF, 0, // DISPLAY_ON
};
static void display_init(void) {
busio_i2c_obj_t *i2c = common_hal_board_create_i2c(0);
displayio_i2cdisplay_obj_t *bus = &displays[0].i2cdisplay_bus;
bus->base.type = &displayio_i2cdisplay_type;
common_hal_displayio_i2cdisplay_construct(bus,
i2c,
0x3c,
&pin_GPIO18 // reset
);
displayio_display_obj_t *display = &displays[0].display;
display->base.type = &displayio_display_type;
common_hal_displayio_display_construct(display,
bus,
128, // Width
32, // Height
0, // column start
0, // row start
0, // rotation
1, // Color depth
true, // grayscale
false, // pixels in byte share row. Only used with depth < 8
1, // bytes per cell. Only valid for depths < 8
false, // reverse_pixels_in_byte. Only valid for depths < 8
true, // reverse_pixels_in_word
0x21, // Set column command
0x22, // Set row command
44, // Write ram command
display_init_sequence,
sizeof(display_init_sequence),
NULL, // no backlight pin
0x81, // brightness command
1.0f, // brightness
true, // single_byte_bounds
true, // data as commands
true, // auto_refresh
60, // native_frames_per_second
true, // backlight_on_high
false, // SH1107_addressing
0); // backlight pwm frequency
}
void board_init(void) {
// init display
display_init();
// Debug UART
#ifdef DEBUG
common_hal_never_reset_pin(&pin_GPIO43);

3
ports/espressif/boards/lolin_s2_pico/pins.c
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@ -1,4 +1,5 @@
#include "shared-bindings/board/__init__.h"
#include "shared-module/displayio/__init__.h"
STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
@ -52,5 +53,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_GPIO36) }, // Not labelled on booard, on schematic
{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_GPIO37) },// Not labelled on booard, on schematic
{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
{ MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&displays[0].display)}
};
MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);