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rt-thread/bsp/stm32/stm32f429-st-disco/board/ports/ili9341.c

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