/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2020 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 "shared-bindings/busio/SPI.h" #include "shared-bindings/displayio/FourWire.h" #include "shared-bindings/microcontroller/Pin.h" #include "shared-module/displayio/__init__.h" #include "shared-module/displayio/mipi_constants.h" #include "shared-bindings/board/__init__.h" #include "esp_log.h" #include "esp_err.h" #include "driver/i2c.h" displayio_fourwire_obj_t board_display_obj; #define DELAY 0x80 uint8_t display_init_sequence[] = { 0x01, 0 | DELAY, 120, // SWRESET 0x11, 0 | DELAY, 5, // SLPOUT 0x36, 1, 0b10100000, // _MADCTL for rotation 0 0x3a, 1, 0x55, // COLMOD - 16bit color 0x21, 0, // _INVON 0x13, 0, // _NORON 0x29, 0 | DELAY, 5, // _DISPON }; #define I2C_MASTER_SCL_IO 34 #define I2C_MASTER_SDA_IO 33 #define I2C_MASTER_NUM 0 #define I2C_MASTER_FREQ_HZ 400000 #define I2C_MASTER_TX_BUF_DISABLE 0 #define I2C_MASTER_RX_BUF_DISABLE 0 #define I2C_MASTER_TIMEOUT_MS 1000 #define I2C_WAIT 40 // Timing (in microseconds) for I2C #define AW9523_ADDR (0x5B) #define AW9523_REG_SOFTRESET (0x7f) #define AW9523_REG_OUTPUT0 (0x02) #define AW9523_REG_CONFIG0 (0x04) #define AW9523_DEFAULT_OUTPUT (0) #define AW9523_DEFAULT_CONFIG (0x2) static void io_expander_backlight_init(void) { int i2c_num = I2C_MASTER_NUM; i2c_config_t conf = { .mode = I2C_MODE_MASTER, .sda_io_num = I2C_MASTER_SDA_IO, .scl_io_num = I2C_MASTER_SCL_IO, .sda_pullup_en = GPIO_PULLUP_ENABLE, .scl_pullup_en = GPIO_PULLUP_ENABLE, .master.clk_speed = I2C_MASTER_FREQ_HZ, }; i2c_param_config(i2c_num, &conf); i2c_driver_install(i2c_num, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0); i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true); i2c_master_write_byte(cmd, AW9523_REG_SOFTRESET, true); i2c_master_write_byte(cmd, 0, true); i2c_master_stop(cmd); i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS); i2c_cmd_link_delete(cmd); cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true); i2c_master_write_byte(cmd, AW9523_REG_CONFIG0, true); i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG >> 8, true); i2c_master_write_byte(cmd, AW9523_DEFAULT_CONFIG & 0xff, true); i2c_master_stop(cmd); i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS); i2c_cmd_link_delete(cmd); cmd = i2c_cmd_link_create(); i2c_master_start(cmd); i2c_master_write_byte(cmd, AW9523_ADDR << 1 | I2C_MASTER_WRITE, true); i2c_master_write_byte(cmd, AW9523_REG_OUTPUT0, true); i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT >> 8, true); i2c_master_write_byte(cmd, AW9523_DEFAULT_OUTPUT & 0xff, true); i2c_master_stop(cmd); i2c_master_cmd_begin(i2c_num, cmd, 1000 / portTICK_RATE_MS); i2c_cmd_link_delete(cmd); i2c_driver_delete(i2c_num); } void board_init(void) { io_expander_backlight_init(); busio_spi_obj_t *spi = common_hal_board_create_spi(0); displayio_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus; bus->base.type = &displayio_fourwire_type; common_hal_displayio_fourwire_construct(bus, spi, &pin_GPIO40, // TFT_DC Command or data &pin_GPIO39, // TFT_CS Chip select &pin_GPIO38, // TFT_RESET Reset 40000000, // 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, 240, // Width (after rotation) 240, // Height (after rotation) 80, // column start 0, // row start 0, // rotation 16, // Color depth false, // Grayscale false, // Pixels in a byte share a row. Only used for 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 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), NULL, // 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, // not SH1107 50000); // backlight pwm frequency } void board_deinit(void) { common_hal_displayio_release_displays(); } // Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.