121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "boards/board.h"
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#include "shared-bindings/displayio/FourWire.h"
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#include "shared-module/displayio/mipi_constants.h"
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#include "tick.h"
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displayio_fourwire_obj_t board_display_obj;
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#define DELAY 0x80
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uint8_t display_init_sequence[] = {
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0x01, 0 | DELAY, 150, // SWRESET
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0x11, 0 | DELAY, 255, // SLPOUT
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0xb1, 3, 0x01, 0x2C, 0x2D, // _FRMCTR1
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0xb2, 3, 0x01, 0x2C, 0x2D, //
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0xb3, 6, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
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0xb4, 1, 0x07, // _INVCTR line inversion
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0xc0, 3, 0xa2, 0x02, 0x84, // _PWCTR1 GVDD = 4.7V, 1.0uA
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0xc1, 1, 0xc5, // _PWCTR2 VGH=14.7V, VGL=-7.35V
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0xc2, 2, 0x0a, 0x00, // _PWCTR3 Opamp current small, Boost frequency
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0xc3, 2, 0x8a, 0x2a,
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0xc4, 2, 0x8a, 0xee,
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0xc5, 1, 0x0e, // _VMCTR1 VCOMH = 4V, VOML = -1.1V
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0x2a, 0, // _INVOFF
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0x36, 1, 0x18, // _MADCTL bottom to top refresh
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// 1 clk cycle nonoverlap, 2 cycle gate rise, 3 sycle osc equalie,
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// fix on VTL
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0x3a, 1, 0x05, // COLMOD - 16bit color
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0xe0, 16, 0x02, 0x1c, 0x07, 0x12, // _GMCTRP1 Gamma
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0x37, 0x32, 0x29, 0x2d,
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0x29, 0x25, 0x2B, 0x39,
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0x00, 0x01, 0x03, 0x10,
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0xe1, 16, 0x03, 0x1d, 0x07, 0x06, // _GMCTRN1
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0x2E, 0x2C, 0x29, 0x2D,
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0x2E, 0x2E, 0x37, 0x3F,
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0x00, 0x00, 0x02, 0x10,
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0x2a, 3, 0x02, 0x00, 0x81, // _CASET XSTART = 2, XEND = 129
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0x2b, 3, 0x02, 0x00, 0x81, // _RASET XSTART = 2, XEND = 129
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0x13, 0 | DELAY, 10, // _NORON
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0x29, 0 | DELAY, 100, // _DISPON
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};
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void board_init(void) {
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board_display_obj.base.type = &displayio_fourwire_type;
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common_hal_displayio_fourwire_construct(&board_display_obj,
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&pin_PB23, // Clock
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&pin_PB22, // Data
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&pin_PA28, // Command or data
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&pin_PA01, // Chip select
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&pin_PA27, // Reset
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128, // Width
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128, // Height
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2, // column start
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0, // row start
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16, // Color depth
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MIPI_COMMAND_SET_COLUMN_ADDRESS, // Set column command
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MIPI_COMMAND_SET_PAGE_ADDRESS, // Set row command
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MIPI_COMMAND_WRITE_MEMORY_START); // Write memory command
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uint32_t i = 0;
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common_hal_displayio_fourwire_begin_transaction(&board_display_obj);
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while (i < sizeof(display_init_sequence)) {
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uint8_t *cmd = display_init_sequence + i;
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uint8_t data_size = *(cmd + 1);
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bool delay = (data_size & DELAY) != 0;
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data_size &= ~DELAY;
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uint8_t *data = cmd + 2;
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common_hal_displayio_fourwire_send(&board_display_obj, true, cmd, 1);
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common_hal_displayio_fourwire_send(&board_display_obj, false, data, data_size);
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if (delay) {
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data_size++;
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uint16_t delay_length_ms = *(cmd + 1 + data_size);
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if (delay_length_ms == 255) {
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delay_length_ms = 500;
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}
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uint64_t start = ticks_ms;
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while (ticks_ms - start < delay_length_ms) {}
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} else {
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uint64_t start = ticks_ms;
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while (ticks_ms - start < 10) {}
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}
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i += 2 + data_size;
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}
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common_hal_displayio_fourwire_end_transaction(&board_display_obj);
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}
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bool board_requests_safe_mode(void) {
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return false;
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}
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void reset_board(void) {
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common_hal_displayio_fourwire_show(&board_display_obj, NULL);
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}
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