/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "supervisor/board.h" #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" #include "shared-bindings/digitalio/DigitalInOut.h" displayio_fourwire_obj_t board_display_obj; digitalio_digitalinout_obj_t CTR_5V; digitalio_digitalinout_obj_t CTR_3V3; digitalio_digitalinout_obj_t USB_HOST_ENABLE; uint8_t display_init_sequence[] = { 0x01, 0x80, 0x80, // Software reset then delay 0x80 (128ms) 0xEF, 0x03, 0x03, 0x80, 0x02, 0xCF, 0x03, 0x00, 0xC1, 0x30, 0xED, 0x04, 0x64, 0x03, 0x12, 0x81, 0xE8, 0x03, 0x85, 0x00, 0x78, 0xCB, 0x05, 0x39, 0x2C, 0x00, 0x34, 0x02, 0xF7, 0x01, 0x20, 0xEA, 0x02, 0x00, 0x00, 0xc0, 0x01, 0x23, // Power control VRH[5:0] 0xc1, 0x01, 0x10, // Power control SAP[2:0];BT[3:0] 0xc5, 0x02, 0x3e, 0x28, // VCM control 0xc7, 0x01, 0x86, // VCM control2 0x36, 0x01, 0xe8, // Memory Access Control 0x37, 0x01, 0x00, // Vertical scroll zero 0x3a, 0x01, 0x55, // COLMOD: Pixel Format Set 0xb1, 0x02, 0x00, 0x18, // Frame Rate Control (In Normal Mode/Full Colors) 0xb6, 0x03, 0x08, 0x82, 0x27, // Display Function Control 0xF2, 0x01, 0x00, // 3Gamma Function Disable 0x26, 0x01, 0x01, // Gamma curve selected 0xe0, 0x0f, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00, // Set Gamma 0xe1, 0x0f, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F, // Set Gamma 0x11, 0x80, 0x78, // Exit Sleep then delay 0x78 (120ms) 0x29, 0x80, 0x78, // Display on then delay 0x78 (120ms) }; void board_init(void) { displayio_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus; busio_spi_obj_t *spi = &bus->inline_bus; common_hal_busio_spi_construct(spi, &pin_PB20, &pin_PB19, NULL, false); common_hal_busio_spi_never_reset(spi); bus->base.type = &displayio_fourwire_type; common_hal_displayio_fourwire_construct(bus, spi, &pin_PC06, // TFT_DC Command or data &pin_PB21, // TFT_CS Chip select &pin_PC07, // TFT_RST Reset 60000000, // Baudrate 0, // Polarity 0); // Phase displayio_display_obj_t *display = &allocate_display()->display; display->base.type = &displayio_display_type; common_hal_displayio_display_construct(display, bus, 320, // Width 240, // Height 0, // column start 0, // row start 0, // rotation 16, // Color depth false, // Grayscale false, // pixels in a byte share a row. Only valid for depths < 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 MIPI_COMMAND_SET_COLUMN_ADDRESS, // Set column command MIPI_COMMAND_SET_PAGE_ADDRESS, // Set row command MIPI_COMMAND_WRITE_MEMORY_START, // Write memory command display_init_sequence, sizeof(display_init_sequence), &pin_PC05, // backlight pin NO_BRIGHTNESS_COMMAND, 1.0f, // brightness false, // single_byte_bounds false, // data_as_commands true, // auto_refresh 60, // native_frames_per_second true, // backlight_on_high false, // SH1107_addressing 50000); // backlight pwm frequency // Enabling the Power of the 40-pin at the back CTR_5V.base.type = &digitalio_digitalinout_type; CTR_3V3.base.type = &digitalio_digitalinout_type; USB_HOST_ENABLE.base.type = &digitalio_digitalinout_type; common_hal_digitalio_digitalinout_construct(&CTR_5V, PIN_CTR_5V); common_hal_digitalio_digitalinout_construct(&CTR_3V3, PIN_CTR_3V3); common_hal_digitalio_digitalinout_construct(&USB_HOST_ENABLE, PIN_USB_HOST_ENABLE); common_hal_digitalio_digitalinout_set_value(&CTR_5V, true); common_hal_digitalio_digitalinout_set_value(&CTR_3V3, false); common_hal_digitalio_digitalinout_set_value(&USB_HOST_ENABLE, false); // Never reset common_hal_digitalio_digitalinout_never_reset(&CTR_5V); common_hal_digitalio_digitalinout_never_reset(&CTR_3V3); common_hal_digitalio_digitalinout_never_reset(&USB_HOST_ENABLE); // reset pin after fake deep sleep reset_pin_number(pin_PA18.number); } void board_deinit(void) { common_hal_displayio_release_displays(); common_hal_digitalio_digitalinout_deinit(&CTR_5V); common_hal_digitalio_digitalinout_deinit(&CTR_3V3); common_hal_digitalio_digitalinout_deinit(&USB_HOST_ENABLE); // Turn off RTL8720DN before the deep sleep. // Pin state is kept during BACKUP sleep. gpio_set_pin_direction(pin_PA18.number, GPIO_DIRECTION_OUT); } // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.