314 lines
9.6 KiB
C
314 lines
9.6 KiB
C
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/*
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* File : ili9341.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2020, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2020-08-11 RT-Thread the first version
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*/
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#include "rtthread.h"
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#include "stm32f4xx_hal.h"
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#include "ili9341.h"
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/**
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* @brief LCD Control pin
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*/
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#define LCD_NCS_PIN GPIO_PIN_2
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#define LCD_NCS_GPIO_PORT GPIOC
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#define LCD_NCS_GPIO_CLK_ENABLE() __HAL_RCC_GPIOC_CLK_ENABLE()
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#define LCD_NCS_GPIO_CLK_DISABLE() __HAL_RCC_GPIOC_CLK_DISABLE()
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/**
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* @brief LCD Command/data pin
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*/
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#define LCD_WRX_PIN GPIO_PIN_13
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#define LCD_WRX_GPIO_PORT GPIOD
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#define LCD_WRX_GPIO_CLK_ENABLE() __HAL_RCC_GPIOD_CLK_ENABLE()
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#define LCD_WRX_GPIO_CLK_DISABLE() __HAL_RCC_GPIOD_CLK_DISABLE()
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#define LCD_RDX_PIN GPIO_PIN_12
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#define LCD_RDX_GPIO_PORT GPIOD
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#define LCD_RDX_GPIO_CLK_ENABLE() __HAL_RCC_GPIOD_CLK_ENABLE()
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#define LCD_RDX_GPIO_CLK_DISABLE() __HAL_RCC_GPIOD_CLK_DISABLE()
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/* Maximum Timeout values for flags waiting loops */
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#define SPIx_TIMEOUT_MAX ((uint32_t)0x1000)
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/* Chip Select macro definition */
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#define LCD_CS_LOW() HAL_GPIO_WritePin(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, GPIO_PIN_RESET)
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#define LCD_CS_HIGH() HAL_GPIO_WritePin(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, GPIO_PIN_SET)
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/* Set WRX High to send data */
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#define LCD_WRX_LOW() HAL_GPIO_WritePin(LCD_WRX_GPIO_PORT, LCD_WRX_PIN, GPIO_PIN_RESET)
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#define LCD_WRX_HIGH() HAL_GPIO_WritePin(LCD_WRX_GPIO_PORT, LCD_WRX_PIN, GPIO_PIN_SET)
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/* Set WRX High to send data */
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#define LCD_RDX_LOW() HAL_GPIO_WritePin(LCD_RDX_GPIO_PORT, LCD_RDX_PIN, GPIO_PIN_RESET)
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#define LCD_RDX_HIGH() HAL_GPIO_WritePin(LCD_RDX_GPIO_PORT, LCD_RDX_PIN, GPIO_PIN_SET)
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static uint8_t Is_LCD_IO_Initialized = 0;
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static SPI_HandleTypeDef SpiHandle;
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/**
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* @brief SPIx Bus initialization
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*/
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static void SPIx_Init(void)
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{
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if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET)
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{
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/* SPI configuration -----------------------------------------------------*/
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SpiHandle.Instance = SPI5;
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/* SPI baudrate is set to 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz)
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*/
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SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
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/* On STM32F429I-Discovery, LCD ID cannot be read then keep a common configuration */
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/* for LCD and GYRO (SPI_DIRECTION_2LINES) */
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/* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */
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SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
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SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
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SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
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SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
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SpiHandle.Init.CRCPolynomial = 7;
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SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
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SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
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SpiHandle.Init.NSS = SPI_NSS_SOFT;
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SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
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SpiHandle.Init.Mode = SPI_MODE_MASTER;
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HAL_SPI_Init(&SpiHandle);
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}
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}
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/**
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* @brief Configures the LCD_SPI interface.
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*/
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static void LCD_GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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if(Is_LCD_IO_Initialized == 0)
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{
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Is_LCD_IO_Initialized = 1;
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/* Configure NCS in Output Push-Pull mode */
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LCD_WRX_GPIO_CLK_ENABLE();
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GPIO_InitStructure.Pin = LCD_WRX_PIN;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
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LCD_RDX_GPIO_CLK_ENABLE();
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GPIO_InitStructure.Pin = LCD_RDX_PIN;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
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/* Configure the LCD Control pins ----------------------------------------*/
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LCD_NCS_GPIO_CLK_ENABLE();
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/* Configure NCS in Output Push-Pull mode */
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GPIO_InitStructure.Pin = LCD_NCS_PIN;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
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/* Set or Reset the control line */
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LCD_CS_LOW();
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LCD_CS_HIGH();
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SPIx_Init();
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}
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}
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/**
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* @brief Writes data to the selected LCD register.
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* @param data: data to lcd.
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* @retval None
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*/
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static void ili9341_write_data(uint16_t data)
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{
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/* Set WRX to send data */
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LCD_WRX_HIGH();
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/* Reset LCD control line(/CS) and Send data */
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LCD_CS_LOW();
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HAL_SPI_Transmit(&SpiHandle, (uint8_t*) &data, 1, SPIx_TIMEOUT_MAX);
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/* Deselect: Chip Select high */
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LCD_CS_HIGH();
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}
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/**
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* @brief Writes to the selected LCD register.
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* @param reg: address of the selected register.
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* @retval None
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*/
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static void ili9341_write_register(uint8_t reg)
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{
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/* Reset WRX to send command */
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LCD_WRX_LOW();
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/* Reset LCD control line(/CS) and Send command */
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LCD_CS_LOW();
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HAL_SPI_Transmit(&SpiHandle, (uint8_t*) ®, 1, SPIx_TIMEOUT_MAX);
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/* Deselect: Chip Select high */
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LCD_CS_HIGH();
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}
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/**
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* @brief Power on the LCD.
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* @param None
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* @retval int
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*/
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int ili9341_hw_init(void)
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{
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/* Initialize ILI9341 low level bus layer ----------------------------------*/
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LCD_GPIO_Init();
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/* Configure LCD */
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ili9341_write_register(0xCA);
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ili9341_write_data(0xC3);
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ili9341_write_data(0x08);
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ili9341_write_data(0x50);
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ili9341_write_register(LCD_POWERB);
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ili9341_write_data(0x00);
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ili9341_write_data(0xC1);
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ili9341_write_data(0x30);
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ili9341_write_register(LCD_POWER_SEQ);
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ili9341_write_data(0x64);
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ili9341_write_data(0x03);
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ili9341_write_data(0x12);
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ili9341_write_data(0x81);
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ili9341_write_register(LCD_DTCA);
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ili9341_write_data(0x85);
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ili9341_write_data(0x00);
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ili9341_write_data(0x78);
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ili9341_write_register(LCD_POWERA);
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ili9341_write_data(0x39);
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ili9341_write_data(0x2C);
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ili9341_write_data(0x00);
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ili9341_write_data(0x34);
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ili9341_write_data(0x02);
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ili9341_write_register(LCD_PRC);
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ili9341_write_data(0x20);
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ili9341_write_register(LCD_DTCB);
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ili9341_write_data(0x00);
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ili9341_write_data(0x00);
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ili9341_write_register(LCD_FRMCTR1);
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ili9341_write_data(0x00);
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ili9341_write_data(0x1B);
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ili9341_write_register(LCD_DFC);
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ili9341_write_data(0x0A);
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ili9341_write_data(0xA2);
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ili9341_write_register(LCD_POWER1);
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ili9341_write_data(0x10);
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ili9341_write_register(LCD_POWER2);
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ili9341_write_data(0x10);
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ili9341_write_register(LCD_VCOM1);
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ili9341_write_data(0x45);
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ili9341_write_data(0x15);
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ili9341_write_register(LCD_VCOM2);
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ili9341_write_data(0x90);
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ili9341_write_register(LCD_MAC);
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ili9341_write_data(0xC8);
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ili9341_write_register(LCD_3GAMMA_EN);
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ili9341_write_data(0x00);
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ili9341_write_register(LCD_RGB_INTERFACE);
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ili9341_write_data(0xC2);
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ili9341_write_register(LCD_DFC);
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ili9341_write_data(0x0A);
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ili9341_write_data(0xA7);
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ili9341_write_data(0x27);
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ili9341_write_data(0x04);
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/* Colomn address set */
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ili9341_write_register(LCD_COLUMN_ADDR);
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ili9341_write_data(0x00);
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ili9341_write_data(0x00);
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ili9341_write_data(0x00);
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ili9341_write_data(0xEF);
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/* Page address set */
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ili9341_write_register(LCD_PAGE_ADDR);
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ili9341_write_data(0x00);
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ili9341_write_data(0x00);
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ili9341_write_data(0x01);
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ili9341_write_data(0x3F);
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ili9341_write_register(LCD_INTERFACE);
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ili9341_write_data(0x01);
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ili9341_write_data(0x00);
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ili9341_write_data(0x06);
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ili9341_write_register(LCD_GRAM);
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rt_thread_mdelay(20);
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ili9341_write_register(LCD_GAMMA);
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ili9341_write_data(0x01);
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ili9341_write_register(LCD_PGAMMA);
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ili9341_write_data(0x0F);
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ili9341_write_data(0x29);
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ili9341_write_data(0x24);
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ili9341_write_data(0x0C);
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ili9341_write_data(0x0E);
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ili9341_write_data(0x09);
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ili9341_write_data(0x4E);
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ili9341_write_data(0x78);
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ili9341_write_data(0x3C);
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ili9341_write_data(0x09);
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ili9341_write_data(0x13);
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ili9341_write_data(0x05);
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ili9341_write_data(0x17);
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ili9341_write_data(0x11);
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ili9341_write_data(0x00);
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ili9341_write_register(LCD_NGAMMA);
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ili9341_write_data(0x00);
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ili9341_write_data(0x16);
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ili9341_write_data(0x1B);
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ili9341_write_data(0x04);
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ili9341_write_data(0x11);
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ili9341_write_data(0x07);
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ili9341_write_data(0x31);
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ili9341_write_data(0x33);
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ili9341_write_data(0x42);
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ili9341_write_data(0x05);
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ili9341_write_data(0x0C);
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ili9341_write_data(0x0A);
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ili9341_write_data(0x28);
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ili9341_write_data(0x2F);
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ili9341_write_data(0x0F);
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ili9341_write_register(LCD_SLEEP_OUT);
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rt_thread_mdelay(20);
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ili9341_write_register(LCD_DISPLAY_ON);
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/* GRAM start writing */
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ili9341_write_register(LCD_GRAM);
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return 0;
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}
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INIT_DEVICE_EXPORT(ili9341_hw_init);
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