FSMC寄存器方式初始化及LCD函数

环境

芯片:STM32F103ZET6

库：stm32f10x.h

原理图

代码

Driver.FSMC.h

#ifndef __DRIVER_FSMC
#define __DRIVER_FSMC
#include "stm32f10x.h"void Driver_FSMC_Init(void);#endif

Driver.FSMC.c

#include "Driver_FSMC.h"/*** 配置FSMC(Flexible Static Memory Controller)相关的GPIO端口* 该函数的目的是根据FSMC的引脚配置要求，设置相应的GPIO端口模式和功能*/
void Driver_FSMC_GPIO_Config(void)
{/* 1 配置 A10 (PG0) 复用推挽输出CNY:10 50MHz速度 MODE:11*//* =============MODE=============== */GPIOG->CRL |= GPIO_CRL_MODE0;GPIOG->CRL |= GPIO_CRL_CNF0_1;GPIOG->CRL &= ~GPIO_CRL_CNF0_0;/*2 数据端口 复用推挽输出在实际应用中，即使数据线被配置为输出模式，FSMC控制器仍然能够管理数据线的方向，使其在需要时成为输入线。这种自动切换是由FSMC控制器硬件管理的，不需要软件干预。因此，即使GPIO配置为复用推挽输出，FSMC依然可以实现读取操作。*//* =============MODE=============== */GPIOD->CRL |= (GPIO_CRL_MODE0 |GPIO_CRL_MODE1);GPIOD->CRH |= (GPIO_CRH_MODE8 |GPIO_CRH_MODE9 |GPIO_CRH_MODE10 |GPIO_CRH_MODE14 |GPIO_CRH_MODE15);GPIOE->CRL |= (GPIO_CRL_MODE7);GPIOE->CRH |= (GPIO_CRH_MODE8 |GPIO_CRH_MODE9 |GPIO_CRH_MODE10 |GPIO_CRH_MODE11 |GPIO_CRH_MODE12 |GPIO_CRH_MODE13 |GPIO_CRH_MODE14 |GPIO_CRH_MODE15);/* =============CNF=============== */GPIOD->CRL |= (GPIO_CRL_CNF0_1 |GPIO_CRL_CNF1_1);GPIOD->CRL &= ~(GPIO_CRL_CNF0_0 |GPIO_CRL_CNF1_0);GPIOD->CRH |= (GPIO_CRH_CNF8_1 |GPIO_CRH_CNF9_1 |GPIO_CRH_CNF10_1 |GPIO_CRH_CNF14_1 |GPIO_CRH_CNF15_1);GPIOD->CRH &= ~(GPIO_CRH_CNF8_0 |GPIO_CRH_CNF9_0 |GPIO_CRH_CNF10_0 |GPIO_CRH_CNF14_0 |GPIO_CRH_CNF15_0);GPIOE->CRL |= (GPIO_CRL_CNF7_1);GPIOE->CRL &= ~(GPIO_CRL_CNF7_0);GPIOE->CRH |= (GPIO_CRH_CNF8_1 |GPIO_CRH_CNF9_1 |GPIO_CRH_CNF10_1 |GPIO_CRH_CNF11_1 |GPIO_CRH_CNF12_1 |GPIO_CRH_CNF13_1 |GPIO_CRH_CNF14_1 |GPIO_CRH_CNF15_1);GPIOE->CRH &= ~(GPIO_CRH_CNF8_0 |GPIO_CRH_CNF9_0 |GPIO_CRH_CNF10_0 |GPIO_CRH_CNF11_0 |GPIO_CRH_CNF12_0 |GPIO_CRH_CNF13_0 |GPIO_CRH_CNF14_0 |GPIO_CRH_CNF15_0);/* 3 其他控制端口   复用推挽输出 *//* 3.1 PD4: 读控制引脚   PD5： 写控制引脚 */GPIOD->CRL |= (GPIO_CRL_MODE4 |GPIO_CRL_MODE5);GPIOD->CRL |= (GPIO_CRL_CNF4_1 |GPIO_CRL_CNF5_1);GPIOD->CRL &= ~(GPIO_CRL_CNF4_0 |GPIO_CRL_CNF5_0);/* 3.2   PG12：NE4*/GPIOG->CRH |= (GPIO_CRH_MODE12);GPIOG->CRH |= (GPIO_CRH_CNF12_1);GPIOG->CRH &= ~(GPIO_CRH_CNF12_0);/* 3.3   背光引脚PB0：通用推挽输出*/GPIOB->CRL |= GPIO_CRL_MODE0;GPIOB->CRL &= ~GPIO_CRL_CNF0;/* 3.4   重置引脚PG15：通用推挽输出*/GPIOG->CRH |= GPIO_CRH_MODE15;GPIOG->CRH &= ~GPIO_CRH_CNF15;
}/*** @brief  初始化FSMC（Flexible Static Memory Controller）模块* * 此函数负责配置FSMC模块，使其能够与外部SRAM进行通信。它包括使能相关时钟、配置GPIO引脚模式、* 以及设置FSMC控制和刷新寄存器以满足SRAM的时序要求。*/
void Driver_FSMC_Init(void)
{/* 1 开启时钟 *//* 1.1 开启FSMC时钟 */RCC->AHBENR |= RCC_AHBENR_FSMCEN;/* 1.2 开启用到的 GPIO 时钟:PD PE PF PG */RCC->APB2ENR |= (RCC_APB2ENR_IOPDEN |RCC_APB2ENR_IOPBEN |RCC_APB2ENR_IOPEEN |RCC_APB2ENR_IOPFEN |RCC_APB2ENR_IOPGEN);/* 1.3 AFIO 时钟 */RCC->APB2ENR |= RCC_APB2ENR_AFIOEN;/* 3 配置 FSMC 各个端口的输入输出模式 */Driver_FSMC_GPIO_Config();/* 4. 配置FSMC参数  *//* 4.1 存储器块使能 根据接线图可知是 Bank1的 3区   1区对应0 2区对应2 3区对应4 4区对应6  (BCR寄存器)*/FSMC_Bank1->BTCR[6] |= FSMC_BCR4_MBKEN;/* 4.2 设置存储器类型 00: SRAM ROM 01:PSRAM 10:NOR闪存*/FSMC_Bank1->BTCR[6] &= ~FSMC_BCR4_MTYP;/* 4.3 闪存访问使能： 禁止访问闪存 */FSMC_Bank1->BTCR[6] &= ~FSMC_BCR4_FACCEN;/* 4.4 地址和数据总线复用： 不复用 */FSMC_Bank1->BTCR[6] &= ~FSMC_BCR4_MUXEN;/* 4.5 数据总线宽度 00：8位 01：16位*/FSMC_Bank1->BTCR[6] &= ~FSMC_BCR4_MWID_1;FSMC_Bank1->BTCR[6] |= FSMC_BCR4_MWID_0;/* 4.6 写使能 */FSMC_Bank1->BTCR[6] |= FSMC_BCR4_WREN;/* 5. 配置SRAM的时序参数 BTCR[7] 访问bank1 4区对应的BTR寄存器 *//* 5.1 地址建立时间（时钟周期） 0：表示一个时钟周期。 对同步读写来说无效，永远是1个时钟周期*/FSMC_Bank1->BTCR[7] &= ~FSMC_BTR4_ADDSET;/* 5.2 地址保持时间（时钟周期） 对同步读写来说无效，永远是1个时钟周期*/FSMC_Bank1->BTCR[7] &= ~FSMC_BTR4_ADDHLD;/* 5.3 数据保持时间（时钟周期）数据在总线上的停留时间 */FSMC_Bank1->BTCR[7] &= ~FSMC_BTR4_DATAST; /* 对应的位置位0 */FSMC_Bank1->BTCR[7] |= (30 << 8);         /* 设置为1个us. 72个时钟周期 *//* 5.4 设置访问模式为A */FSMC_Bank1->BTCR[7] &= ~FSMC_BTR4_ACCMOD;
}

Inf_LCD.c

#include "Inf_LCD.h"
#include "Inf_Font.h"/* 初始化LCD */
void Inf_LCD_Init(void)
{/* 0. 初始化FSMC */Driver_FSMC_Init();// 1. 重置LCDInf_LCD_Reset();// 2. 开启背光Inf_LCD_BKOpen();// 3. 初始化寄存器Inf_LCD_RegConfig();
}/* 读取lcd的id,用来测试通讯是否正常 */
uint32_t Inf_LCD_ReadId(void)
{uint32_t id = 0x0;Inf_LCD_WriteCmd(0x04);Inf_LCD_ReadData();             // 无用的数据，扔掉即可id |= Inf_LCD_ReadData() << 16; // 制造商idid |= Inf_LCD_ReadData() << 8;  // 模块/驱动版本号idid |= Inf_LCD_ReadData();       // 模块/驱动idreturn id;
}/* 初始化寄存器的值 */
void Inf_LCD_RegConfig(void)
{/* 1. 设置灰阶电压以调整TFT面板的伽马特性， 正校准。一般出厂就设置好了 */Inf_LCD_WriteCmd(0xE0);Inf_LCD_WriteData(0x00);Inf_LCD_WriteData(0x07);Inf_LCD_WriteData(0x10);Inf_LCD_WriteData(0x09);Inf_LCD_WriteData(0x17);Inf_LCD_WriteData(0x0B);Inf_LCD_WriteData(0x41);Inf_LCD_WriteData(0x89);Inf_LCD_WriteData(0x4B);Inf_LCD_WriteData(0x0A);Inf_LCD_WriteData(0x0C);Inf_LCD_WriteData(0x0E);Inf_LCD_WriteData(0x18);Inf_LCD_WriteData(0x1B);Inf_LCD_WriteData(0x0F);/* 2. 设置灰阶电压以调整TFT面板的伽马特性，负校准 */Inf_LCD_WriteCmd(0XE1);Inf_LCD_WriteData(0x00);Inf_LCD_WriteData(0x17);Inf_LCD_WriteData(0x1A);Inf_LCD_WriteData(0x04);Inf_LCD_WriteData(0x0E);Inf_LCD_WriteData(0x06);Inf_LCD_WriteData(0x2F);Inf_LCD_WriteData(0x45);Inf_LCD_WriteData(0x43);Inf_LCD_WriteData(0x02);Inf_LCD_WriteData(0x0A);Inf_LCD_WriteData(0x09);Inf_LCD_WriteData(0x32);Inf_LCD_WriteData(0x36);Inf_LCD_WriteData(0x0F);/* 3.  Adjust Control 3 (F7h)  *//*LCD_WriteCmd(0XF7);Inf_LCD_WriteData(0xA9);Inf_LCD_WriteData(0x51);Inf_LCD_WriteData(0x2C);Inf_LCD_WriteData(0x82);*//* DSI write DCS command, use loose packet RGB 666 *//* 4. 电源控制1*/Inf_LCD_WriteCmd(0xC0);Inf_LCD_WriteData(0x11); /* 正伽马电压 */Inf_LCD_WriteData(0x09); /* 负伽马电压 *//* 5. 电源控制2 */Inf_LCD_WriteCmd(0xC1);Inf_LCD_WriteData(0x02);Inf_LCD_WriteData(0x03);/* 6. VCOM控制 */Inf_LCD_WriteCmd(0XC5);Inf_LCD_WriteData(0x00);Inf_LCD_WriteData(0x0A);Inf_LCD_WriteData(0x80);/* 7. Frame Rate Control (In Normal Mode/Full Colors) (B1h) */Inf_LCD_WriteCmd(0xB1);Inf_LCD_WriteData(0xB0);Inf_LCD_WriteData(0x11);/* 8.  Display Inversion Control (B4h) （正负电压反转，减少电磁干扰）*/Inf_LCD_WriteCmd(0xB4);Inf_LCD_WriteData(0x02);/* 9.  Display Function Control (B6h)  */Inf_LCD_WriteCmd(0xB6);Inf_LCD_WriteData(0x0A);Inf_LCD_WriteData(0xA2);/* 10. Entry Mode Set (B7h)  */Inf_LCD_WriteCmd(0xB7);Inf_LCD_WriteData(0xc6);/* 11. HS Lanes Control (BEh) */Inf_LCD_WriteCmd(0xBE);Inf_LCD_WriteData(0x00);Inf_LCD_WriteData(0x04);/* 12.  Interface Pixel Format (3Ah) */Inf_LCD_WriteCmd(0x3A);Inf_LCD_WriteData(0x55); /* 0x55 : 16 bits/pixel  *//* 13. Sleep Out (11h) 关闭休眠模式 */Inf_LCD_WriteCmd(0x11);/* 14. 设置屏幕方向和RGB */Inf_LCD_WriteCmd(0x36);Inf_LCD_WriteData(0x08);Delay_ms(120);/* 14. display on */Inf_LCD_WriteCmd(0x29);
}/* 重置LCD PG15*/
void Inf_LCD_Reset(void)
{GPIOG->ODR &= ~GPIO_ODR_ODR15; // 低电平重置Delay_ms(50);GPIOG->ODR |= GPIO_ODR_ODR15; // 高电平正常Delay_ms(50);
}/* 给LCD开启背光 */
void Inf_LCD_BKOpen(void)
{GPIOB->ODR |= GPIO_ODR_ODR0; // 高电平开启背光
}
/* 给LCD关闭背光 */
void Inf_LCD_BKClose(void)
{GPIOB->ODR &= ~GPIO_ODR_ODR0; // 低电平关闭背光(最暗)
}/* 发送命令 */
void Inf_LCD_WriteCmd(__IO uint16_t cmd)
{*LCD_ADDR_CMD = cmd;
}/* 发送数据 */
void Inf_LCD_WriteData(__IO uint16_t data)
{*LCD_ADDR_DATA = data;
}/* 读取数据 */
uint16_t Inf_LCD_ReadData(void)
{return *LCD_ADDR_DATA;
}/*** @description: 在LCD上显示一个Ascii字符* @param {uint16_t} x 起始x坐标* @param {uint16_t} y 起始y坐标* @param {uint8_t} c 要显示的字符* @param {uint16_t} fgColor 前景色:字符轮廓的颜色* @param {uint16_t} bgColor 背景色:非字符轮廓的颜色  比如白纸黑字：黑色是前景色 白色就是背景色* @param {uint8_t} fontHeight 字体高度 12|16|24|32*/
void Inf_LCD_DisplayAsciiChar(uint16_t x,uint16_t y,uint8_t c,uint16_t fgColor,uint16_t bgColor,uint8_t fontHeight)
{/* 1. 找到字符在字库中的位置 */uint8_t cPosition = c - ' ';/* 2. 设置要写入的LCD区域 */Inf_LCD_SetAddr(x, y, fontHeight >> 1, fontHeight);/* 3. 把字库数据写入到GRAM内存中 */Inf_LCD_WriteCmd(0x2C);uint8_t i, j, tmp, fontWidth = fontHeight >> 1;if (fontHeight == 12 || fontHeight == 16){for (i = 0; i < fontHeight; i++){// 一个字节控制着一行的8个像素。先低位再高位tmp = fontHeight == 12 ? ascii_1206[cPosition][i] : ascii_1608[cPosition][i];for (j = 0; j < fontWidth; j++){if (tmp & 0x01) // 如果是 1,则发送前景色{Inf_LCD_WriteData(fgColor);}else // 是0发送背景色{Inf_LCD_WriteData(bgColor);}tmp >>= 1; // 右移一位}}}else if (fontHeight == 24){for (i = 0; i < fontHeight << 1; i++){tmp = ascii_2412[cPosition][i];uint8_t jCount = i % 2 ? 4 : 8;for (j = 0; j < jCount; j++){if (tmp & 0x01) // 如果是 1,则发送前景色{Inf_LCD_WriteData(fgColor);}else // 是0发送背景色{Inf_LCD_WriteData(bgColor);}tmp >>= 1; // 右移一位}}}else if (fontHeight == 32){for (i = 0; i < fontHeight << 1; i++){tmp = ascii_3216[cPosition][i];for (j = 0; j < 8; j++){if (tmp & 0x01) // 如果是 1,则发送前景色{Inf_LCD_WriteData(fgColor);}else // 是0发送背景色{Inf_LCD_WriteData(bgColor);}tmp >>= 1; // 右移一位}}}
}/*** @description: 显示一行英文字符串* @param {uint16_t} x* @param {uint16_t} y* @param {uint8_t} *str* @param {uint16_t} fgColor* @param {uint16_t} bgColor* @param {uint8_t} fontHeight* @return {*}*/
void Inf_LCD_DisplayAsciiString(uint16_t x,uint16_t y,uint8_t *str,uint16_t fgColor,uint16_t bgColor,uint8_t fontHeight)
{// 字体宽度uint8_t fontWidth = fontHeight >> 1;uint16_t i = 0;while (str[i] != '\0'){if (str[i] != '\n') // 如果不是换行符{if (x + fontWidth > 320) // 水平方向要显示的字符超出了屏幕， 则需要换行显示{y += fontHeight;x = 0;}Inf_LCD_DisplayAsciiChar(x, y, str[i], fgColor, bgColor, fontHeight);// 定义下一个字符的x坐标x += fontWidth;}else // 如果碰到换行符{y += fontHeight;x = 0;}i++;}
}/*** @description: 显示中文字符* @param {uint16_t} x* @param {uint16_t} y* @param {uint8_t} chinesCharPosition* @param {uint16_t} fgColor* @param {uint16_t} bgColor* @return {*}*/
void Inf_LCD_DisplayChinesChar(uint16_t x,uint16_t y,uint8_t chinesCharPosition,uint16_t fgColor,uint16_t bgColor)
{/* 1. 设置要写入的LCD区域 中午字符一般宽高一样*/Inf_LCD_SetAddr(x, y, 32, 32);/* 3. 把字库数据写入到GRAM内存中 */Inf_LCD_WriteCmd(0x2C);uint8_t i, j, tmp;for (i = 0; i < 128; i++){tmp = chinese[chinesCharPosition][i];for (j = 0; j < 8; j++){if (tmp & 0x01) // 如果是 1,则发送前景色{Inf_LCD_WriteData(fgColor);}else // 是0发送背景色{Inf_LCD_WriteData(bgColor);}tmp >>= 1; // 右移一位}}
}/*** @description: 设置要写入的GRAM的起始地址和结束地址。 默认坐标原点是 左上角* @param {uint16_t} x 起始x坐标* @param {uint16_t} y 起始y坐标* @param {uint16_t} w 区域宽* @param {uint16_t} h 区域高*/
void Inf_LCD_SetAddr(uint16_t x,uint16_t y,uint16_t w,uint16_t h)
{/* 设置x坐标(第几列) */Inf_LCD_WriteCmd(0x2A);/* 1. 起始列 */Inf_LCD_WriteData(x >> 8);   // 高8位Inf_LCD_WriteData(x & 0xFF); // 低8位/* 2. 结束列 */Inf_LCD_WriteData((x + w - 1) >> 8);Inf_LCD_WriteData((x + w - 1) & 0xFF);/* 设置y坐标(第行列) */Inf_LCD_WriteCmd(0x2B);/* 1. 起始行 */Inf_LCD_WriteData(y >> 8);   /* 高8位 */Inf_LCD_WriteData(y & 0xFF); /* 低8位 *//* 2. 结束行 */Inf_LCD_WriteData((y + h - 1) >> 8);   /* 高8位 */Inf_LCD_WriteData((y + h - 1) & 0xFF); /* 低8位 */
}/*** @description: 读取显示像素格式*/
uint16_t Inf_LCD_ReadDisplayPixelFormat(void)
{Inf_LCD_WriteCmd(0x0C);Inf_LCD_ReadData();return Inf_LCD_ReadData();
}/*** @description: 给LCD设置纯背景色* @return {*}*/
void Inf_LCD_Clear(uint16_t color)
{Inf_LCD_SetAddr(0, 0, 320, 480);Inf_LCD_FillColor(320 * 480, color);
}/*** @description: 填充颜色* @param {uint32_t} num 填充的像素数* @param {uint16_t} color 填充的具体颜色* @return {*}*/
void Inf_LCD_FillColor(uint32_t num, uint16_t color)
{Inf_LCD_WriteCmd(0x2C);while (num--){Inf_LCD_WriteData(color);}
}

Inf_LCD.h

#ifndef __INF_LCD_H
#define __INF_LCD_H#include "Driver_Usart1.h"
#include "Com_Delay.h"
#include "Driver_FSMC.h"#define SRAM_BANK4 0x6C000000
#define LCD_AX 10                                                           // Inf_LCD的地址线，我们连接的时A10
#define LCD_ADDR_CMD ((__IO uint16_t *)SRAM_BANK4)                          // 写命令地址
#define LCD_ADDR_DATA ((__IO uint16_t *)(SRAM_BANK4 + (1 << (LCD_AX + 1)))) // 数据地址(计算地址的时候要左移一位)/* 常见颜色 */
#define WHITE 0xFFFF
#define BLACK 0x0000
#define BLUE 0x001F
#define BRED 0XF81F
#define GRED 0XFFE0
#define GBLUE 0X07FF
#define RED 0xF800
#define MAGENTA 0xF81F
#define GREEN 0x07E0
#define CYAN 0x7FFF
#define YELLOW 0xFFE0
#define BROWN 0XBC40 // 棕色
#define BRRED 0XFC07 // 棕红色
#define GRAY 0X8430  // 灰色void Inf_LCD_Init(void);
uint32_t Inf_LCD_ReadId(void);
void Inf_LCD_RegConfig(void);
void Inf_LCD_Reset(void);
void Inf_LCD_BKOpen(void);
void Inf_LCD_BKClose(void);
void Inf_LCD_WriteCmd(__IO uint16_t cmd);
void Inf_LCD_WriteData(__IO uint16_t data);
uint16_t Inf_LCD_ReadData(void);
void Inf_LCD_DisplayAsciiChar(uint16_t x, uint16_t y, uint8_t c, uint16_t fgColor, uint16_t bgColor, uint8_t fontHeight);
void Inf_LCD_DisplayAsciiString(uint16_t x, uint16_t y, uint8_t *str, uint16_t fgColor, uint16_t bgColor, uint8_t fontHeight);
void Inf_LCD_DisplayChinesChar(uint16_t x, uint16_t y, uint8_t chinesCharPosition, uint16_t fgColor, uint16_t bgColor);
void Inf_LCD_SetAddr(uint16_t x, uint16_t y, uint16_t w, uint16_t h);
uint16_t Inf_LCD_ReadDisplayPixelFormat(void);
void Inf_LCD_Clear(uint16_t color);
void Inf_LCD_FillColor(uint32_t num, uint16_t color);
#endif

ascii 字模在最上方