STM32f103 —— ILI9341
#ifndef ILI9341_H_
#define ILI9341_H_#include "type.h"//====================================TFT ILI9341=====================================
#define ILI9341_SPI SPI1#define ILI9341_MOSI_GRP GPIOA
#define ILI9341_MOSI_IDX GPIO_Pin_7
#define ILI9341_MOSI_LOW() GPIO_ResetBits(ILI9341_MOSI_GRP, ILI9341_MOSI_IDX)
#define ILI9341_MOSI_HIGH() GPIO_SetBits(ILI9341_MOSI_GRP, ILI9341_MOSI_IDX)#define ILI9341_RS_GRP GPIOA
#define ILI9341_RS_IDX GPIO_Pin_3
#define ILI9341_RS_LOW() GPIO_ResetBits(ILI9341_RS_GRP, ILI9341_RS_IDX)
#define ILI9341_RS_HIGH() GPIO_SetBits(ILI9341_RS_GRP, ILI9341_RS_IDX)#define ILI9341_CS_GRP GPIOA
#define ILI9341_CS_IDX GPIO_Pin_4
#define ILI9341_CS_LOW() GPIO_ResetBits(ILI9341_CS_GRP, ILI9341_CS_IDX)
#define ILI9341_CS_HIGH() GPIO_SetBits(ILI9341_CS_GRP, ILI9341_CS_IDX)#define ILI9341_CLK_GRP GPIOA
#define ILI9341_CLK_IDX GPIO_Pin_5
#define ILI9341_CLK_LOW() GPIO_ResetBits(ILI9341_CLK_GRP, ILI9341_CS_IDX)
#define ILI9341_CLK_HIGH() GPIO_SetBits(ILI9341_CLK_IDX, ILI9341_CS_IDX)#define ILI9341_ENLED_GRP GPIOB
#define ILI9341_ENLED_IDX GPIO_Pin_2
#define ILI9341_ENLED_LOW() GPIO_ResetBits(ILI9341_ENLED_GRP, ILI9341_ENLED_IDX)
#define ILI9341_ENLED_HIGH() GPIO_SetBits(ILI9341_ENLED_GRP, ILI9341_ENLED_IDX)#define ILI9341_RESET_GRP GPIOB
#define ILI9341_RESET_IDX GPIO_Pin_0
#define ILI9341_RESET_LOW() GPIO_ResetBits(ILI9341_RESET_GRP, ILI9341_RESET_IDX)
#define ILI9341_RESET_HIGH() GPIO_SetBits(ILI9341_RESET_GRP, ILI9341_RESET_IDX)void ILI9341Config(void);
void ILI9341SetCursor(uint16_t x, uint16_t y);
void ILI9341SetColor(uint16_t rgb565);
void ILI9341WriteData(uint8_t high,uint8_t low);#include "ili9341.h"
#include "delay.h"/* ILI9341液晶的SPI GPIO初始化 */
static void ili9341_spi_init(SPI_TypeDef* SPIx, uint16_t spi_baud_div)
{SPI_InitTypeDef SPI_InitStructure;GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);/* clk和mosi是复用功能，其它引脚是通用推挽输出 */GPIO_InitStructure.GPIO_Pin = ILI9341_MOSI_IDX | ILI9341_CLK_IDX;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_Init(ILI9341_MOSI_GRP, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = ILI9341_CS_IDX | ILI9341_RS_IDX;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(ILI9341_CS_GRP, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = ILI9341_ENLED_IDX | ILI9341_RESET_IDX;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(ILI9341_RESET_GRP, &GPIO_InitStructure);SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;SPI_InitStructure.SPI_Mode = SPI_Mode_Master;SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;SPI_InitStructure.SPI_CRCPolynomial = 7;SPI_Init(SPIx, &SPI_InitStructure);SPI_Cmd(SPIx, ENABLE);
}static void ili9341_spi_config(void)
{ili9341_spi_init(ILI9341_SPI, 0x02);ILI9341_ENLED_HIGH(); /* 点亮LCD */ILI9341_CS_HIGH(); /* 关闭失能cs */ILI9341_RESET_HIGH(); /* 复位引脚制高失能 */ILI9341_RS_HIGH(); /* RS制高 */
}/* spi读写数据 */
static uint8_t ili9341_read_write_byte(uint8_t data)
{while (SPI_I2S_GetFlagStatus(ILI9341_SPI, SPI_I2S_FLAG_TXE) == RESET);SPI_I2S_SendData(ILI9341_SPI, data); while (SPI_I2S_GetFlagStatus(ILI9341_SPI, SPI_I2S_FLAG_RXNE) == RESET);return SPI_I2S_ReceiveData(ILI9341_SPI); //返回通过SPIx最近接收的数据
}/* 写命令 */
static void ili9341_cmd_write(uint8_t cmd)
{ILI9341_RS_LOW();ILI9341_CS_LOW();ili9341_read_write_byte(cmd);ILI9341_CS_HIGH();
}/* 写数据 */
static void ili9341_data_write(uint8_t data)
{ILI9341_RS_HIGH();ILI9341_CS_LOW();ili9341_read_write_byte(data);ILI9341_CS_HIGH();
}/* 写16位数据 */
void ili9341_data_wtite_16(uint8_t high, uint8_t low)
{ILI9341_RS_HIGH();ILI9341_CS_LOW();ili9341_read_write_byte(high);ILI9341_CS_HIGH();ILI9341_RS_HIGH();ILI9341_CS_LOW();ili9341_read_write_byte(low);ILI9341_CS_HIGH();
}/* 初始化9341液晶，根据手册时序 */
static void ili9341_init(void)
{ILI9341_RESET_LOW();delay_ms(10);ILI9341_RESET_HIGH();delay_ms(120);//************* Start Initial Sequence **********//ili9341_cmd_write(0xCB);ili9341_data_write (0x39);ili9341_data_write (0x2C);ili9341_data_write (0x00);ili9341_data_write (0x34);ili9341_data_write (0x02);ili9341_cmd_write(0xCF);ili9341_data_write (0x00);ili9341_data_write (0xC1);ili9341_data_write (0X30);ili9341_cmd_write(0xE8);ili9341_data_write (0x85);ili9341_data_write (0x00);ili9341_data_write (0x78);ili9341_cmd_write(0xEA);ili9341_data_write (0x00);ili9341_data_write (0x00);ili9341_cmd_write(0xED);ili9341_data_write (0x64);ili9341_data_write (0x03);ili9341_data_write (0X12);ili9341_data_write (0X81);ili9341_cmd_write(0xF7);ili9341_data_write(0x20);ili9341_cmd_write(0xC0); // Power controlili9341_data_write (0x23); // VRH[5:0]ili9341_cmd_write(0xC1); // Power controlili9341_data_write (0x10); // SAP[2:0];BT[3:0]ili9341_cmd_write(0xC5); // VCM controlili9341_data_write (0x3e);ili9341_data_write (0x28);ili9341_cmd_write(0xC7); // VCM control2ili9341_data_write (0X86);ili9341_cmd_write(0x36); // Memory Access Controlili9341_data_write (0xe8);ili9341_cmd_write(0X2A);ili9341_data_write(0x00); // startili9341_data_write(0x00);ili9341_data_write(0x01); // endili9341_data_write(0x3F);ili9341_cmd_write(0X2B);ili9341_data_write(0x00); // startili9341_data_write(0x00);ili9341_data_write(0x00); // endili9341_data_write(0xEF);ili9341_cmd_write(0x3A);ili9341_data_write (0x55);ili9341_cmd_write(0xB1);ili9341_data_write (0x00);ili9341_data_write (0x18);ili9341_cmd_write(0xB6); // Display Function Controlili9341_data_write (0x08);ili9341_data_write (0x82);ili9341_data_write (0x27);ili9341_cmd_write(0xF2); // 3Gamma Function Disableili9341_data_write (0x00);ili9341_cmd_write(0x26); // Gamma curve selectedili9341_data_write (0x01);ili9341_cmd_write(0xE0); // Set Gammaili9341_data_write (0x0F);ili9341_data_write (0x31);ili9341_data_write (0x2b);ili9341_data_write (0x0c);ili9341_data_write (0x0e);ili9341_data_write (0x08);ili9341_data_write (0x4e);ili9341_data_write (0Xf1);ili9341_data_write (0x37);ili9341_data_write (0x07);ili9341_data_write (0x10);ili9341_data_write (0x03);ili9341_data_write (0x0e);ili9341_data_write (0x09);ili9341_data_write (0x00);ili9341_cmd_write(0XE1); // Set Gammaili9341_data_write (0x00);ili9341_data_write (0x0e);ili9341_data_write (0x14);ili9341_data_write (0x03);ili9341_data_write (0x11);ili9341_data_write (0x07);ili9341_data_write (0x31);ili9341_data_write (0xc1);ili9341_data_write (0x48);ili9341_data_write (0x08);ili9341_data_write (0x0f);ili9341_data_write (0x0C);ili9341_data_write (0x31);ili9341_data_write (0x36);ili9341_data_write (0x0f);ili9341_cmd_write(0x11); // Exit Sleepdelay_ms(120);ili9341_cmd_write(0x29); // Display onili9341_cmd_write(0x2c);
}//=================================================================
/* ILI9341配置:GPIO配置，液晶初始化 */
void ILI9341Config(void)
{ili9341_spi_config(); /* 配置ILI9341GPIO和点亮屏 */ili9341_init(); /* ILI9341液晶初始化 */
}void ILI9341SetColor(uint16_t rgb565)
{uint8_t H;uint8_t L;H = (rgb565 & 0xFF00) >> 8;L = (rgb565 & 0x00FF);WatchdogFeed();ili9341_data_wtite_16(H, L);
}void ILI9341SetCursor(uint16_t x, uint16_t y)
{ili9341_cmd_write(0x2a);ili9341_data_wtite_16(x >> 8, x);ili9341_cmd_write(0x2b);ili9341_data_wtite_16(y >> 8, y);ili9341_cmd_write(0x2c);
}void ILI9341WriteData(uint8_t high, uint8_t low)
{ili9341_data_wtite_16(high, low);
}
struct grap_char
{uint16_t x1; /*字的起始位置的X轴*/uint16_t y1; /*字的起始位置的Y轴*/uint8_t code[2]; /*要显示的内容*/uint16_t rgb565; /*显示的前景色*/uint16_t blkrgb565; /*显示的背景色*/
}; // 描点int grap_xy(int16_t x1, int16_t y1, int16_t x2, int16_t y2, int16_t blkrgb565) // 刷屏
{int16_t i;int16_t j;if (y2 > MAX_POSY ||x2 > MAX_POSX ||x1 > MAX_POSX ||y1 > MAX_POSY ||x1 >= x2 ||y1 > y2){return 0;}for (j = y1; j < y2; j++){ILI9341SetCursor(x1, j);for (i = x1; i < x2; i++){ILI9341SetColor(blkrgb565);}}return 1;
}