一,关于STM32F103VE-FSMC 的设置.
void LCD_Setup(void) { /* Configure the LCD Control pins --------------------------------------------*/ LCD_CtrlLinesConfig(); /* Configure the FSMC Parallel interface -------------------------------------*/ LCD_FSMCConfig(); if(LCDType == LCD_ILI9320) { 。。。。。。。。。。。。。。。。。 } } /******************************************************************************* * Function Name : LCD_CtrlLinesConfig * Description : Configures LCD control lines in Output Push-Pull mode. * Input : None * Output : None * Return : None *******************************************************************************/ /* for FMSC lcd: PD7 -> nCS PD11 -> RS PD5 -> nWR PD4 -> nRD P? -> nRESET 液晶屏管脚分布 - 无触摸控制器 1 - IM3 2 - IM2 3 - IM1 4 - IM0 5 - nCS 6 - RS 7 - nWR 8 - nRD 9 - nRESET 10 - SDI 11 - SDO 12 - DB17 13- DB16 14 - DB15 15 - DB14 16 - DB13 17 - DB12 18 - DB11 19 - DB10 20 - DB9 21 - DB8 22 - DB7 23 - DB6 24 - DB5 25 - DB4 26 - DB3 27 - DB2 28 - DB1 29 - DB0 30 - DOTCLK 31 - VSYNC 32 - VSYNC 33 - HSYNC 34 - LEDA 35 - LED1 36 - LED2 37 - LED3 38 - LED4 39 - X+ 40 - Y+ 41 - X- 42 - Y- 43 - GND 44 - GND 45 - VCC */ void LCD_CtrlLinesConfig(void) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable FSMC, GPIOD, GPIOE and AFIO clocks */ * RCC使能FSMC的时钟直接来自AHB时钟, 也就是HCLK, 中间没有分频. 控制位是RCC_AHBENR中的FSMCEN位 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE); GPIO端口和AFIO端口时钟来自APB2, 也就是PCLK2, 控制位是RCC_APB2ERN中的IOPxEN 和AFIOEN位 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |RCC_APB2Periph_AFIO, ENABLE); /* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.07(NE1), PD.08(D13), PD.09(D14), PD.10(D15), PD.11(A16), PD.14(D0), PD.15(D1) as alternate function push pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); /* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10), PE.14(D11), PE.15(D12) as alternate function push pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOE, &GPIO_InitStructure); /* Set PF.00(A0 (RS)) as alternate function push pull */ //GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //GPIO_Init(GPIOF, &GPIO_InitStructure); /* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */ //GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //GPIO_Init(GPIOG, &GPIO_InitStructure); } 对于用于FSMC输出的信号线要设定为复用推挽输出模式(Alternate function push- pull). 对于用于FSMC输入的信号线要怎样设置目前还不清楚,?????? *FSMC自身设置 FSMC自身设置有两块, 一块是控制方式设置, 是针对FSMC_DCR的设置, 另一块是读写时序设定, 是针对FSMC_DTR的设置. NORFLASH和PSRAM的操作时序设置----- FSMC_DTR的设置. /******************************************************************************* * Function Name : LCD_FSMCConfig * Description : Configures the Parallel interface (FSMC) for LCD(Parallel mode) * Input : None * Output : None * Return : None *******************************************************************************/ void LCD_FSMCConfig(void) { FSMC_NORSRAMTimingInitTypeDef p; p.FSMC_AddressSetupTime = 1; /*ADDSET 地址建立时间*/ p.FSMC_AddressHoldTime = 1; /*ADDHOLD 地址保持时间*/ p.FSMC_DataSetupTime = 20; /*DATAST 数据建立时间*/ p.FSMC_BusTurnAroundDuration = 0; /*BUSTURN 总线返转时间*/ p.FSMC_CLKDivision = 0; /*CLKDIV 时钟分频*/ p.FSMC_DataLatency = 1; /*DATLAT 数据保持时间*/ p.FSMC_AccessMode = FSMC_AccessMode_A; /*ACCMOD FSMC 访问模式*/ 下面这段是对控制方式的设置----FSMC_DCR的设置 FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; /*选择设置的BANK及片选信号*/ FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1; /*设置是否数据地址总线分时复用*/ FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; /*设置存储器类型*/ FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM; /*设置数据宽度*/ FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b; /*设置是否使用迸发访问模式(应该就是连续读写模式吧),*/ FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable; /*设置WAIT信号的有效电平*/ FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; /*设置是否使用环回模式*/ FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; /*设置WAIT信号有效时机*/ FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; /*设定是否使能写操作*/ FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; /*设定是否使用WAIT信号*/ FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; /*设定是否使用单独的写时序*/ FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable; /*设定是否使用异步等待信号*/ FSMC_NORSRAMInitStructure.FSMC_AsyncWait = FSMC_AsyncWait_Disable; /*设定是否使用迸发写模式*/ FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; /*设定读写时序*/ FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p; FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p; FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE); } 这些东西设定好后, 就可以像操作外设一样操作LCM接口了. 通过参考手册知道, 在FSMC中, 将NOR/PSRAM第1片选信号的地址空间映射在0X60000000开始 的16MB空间内, 由于nRD为高时操作LCM的数据寄存器, 为低时操作LCM的控制寄存器,
cpu:stm32f103ve -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 先贴出ILI9320的驱动吧
/********************************************** 函数名:ILI9320初始化函数 功能:初始化 入口参数:无 返回值:无 ***********************************************/ /************************************************************************ ** ** ** nCS ----\__________________________________________/------- ** ** RS ------\____________/----------------------------------- ** ** nRD ------------------------------------------------------- ** ** nWR --------\_______/--------\_____/----------------------- ** ** DB[0:15] ---------[index]----------[data]----------------------- ** ** ** ************************************************************************ void 9320_Init(void) { Lcd_Light_ON; Lcd_AllPin_H();//所有数据引脚变高 Lcd_Rst_H();//复位信号 Delay_nms(1); Lcd_Rst_L(); Delay_nms(1);//10 Lcd_Rst_H(); Delay_nms(1);//50 //开始初始化 LCD_WR_REG(0x00e5,0x8000);//set the internal vcore voltage不知道干什么的????? LCD_WR_REG(0x0000,0x0001);//开启内部OSC Delay_nms(10);//延时10ms等待晶体稳定 LCD_WR_REG(0x0001,0x0100);//SS=1 S极输出移动方向S720到S1. SM=0 【GS=0】 G极扫描方向从上到下(详细DATASHEET) LCD_WR_REG(0x0002,0x0700);//B/C=1 EOR=1 set the line inversion?不知道干什么???? LCD_WR_REG(0x0003,0x1030);//TFM=0,TRI=0,SWAP=1,16位system interface 写GRAM时翻转RGB数据到BRG数据?翻转干什么????? //HWM=0,高速GRAM写操作禁止???????????????????高速写操作是否是激活RBG或其他动态画面显 //示模式??????? AM=0,ID[1.0]=11 AC由左到右又下到上自增 LCD_WR_REG(0x0004,0x0000);//比例缩放设置 LCD_WR_REG(0x0008,0x0202); LCD_WR_REG(0x0009,0x0000); LCD_WR_REG(0x000a,0x0000); LCD_WR_REG(0x000c,0x0001);//system接口 显示静止画面 LCD_WR_REG(0x000d,0x0000); LCD_WR_REG(0x000f,0x0000);//RBG 接口极性设置 DOTCLK ENABLE HSYNC??????????????????????????? LCD_WR_REG(0x0050,0x0000);//水平 GRAM起始位置 LCD_WR_REG(0x0051,0x00ef);//水平GRAM终止位置 LCD_WR_REG(0x0052,0x0000);//垂直GRAM起始位置 LCD_WR_REG(0x0053,0x013f);//垂直GRAM终止位置 LCD_WR_REG(0x0060,0x2700);//G扫描设置 从G1开始 LCD_WR_REG(0x0061,0x0001);//Enables the grayscale inversion of the image by setting REV=1.?????????????????????????????? LCD_WR_REG(0x006a,0x0000);//不使用卷曲功能 LCD_WR_REG(0x0080,0x0000); LCD_WR_REG(0x0081,0x0000); LCD_WR_REG(0x0082,0x0000); LCD_WR_REG(0x0083,0x0000); LCD_WR_REG(0x0084,0x0000); LCD_WR_REG(0x0085,0x0000); LCD_WR_REG(0x0090,0x0010); LCD_WR_REG(0x0092,0x0000); LCD_WR_REG(0x0093,0x0003); LCD_WR_REG(0x0095,0x0110); LCD_WR_REG(0x0097,0x0000); LCD_WR_REG(0x0098,0x0000); /*电源设置*/ LCD_WR_REG(0x0010,0x0000); LCD_WR_REG(0x0011,0x0000); LCD_WR_REG(0x0012,0x0000); LCD_WR_REG(0x0013,0x0000); Delay_nms(200); LCD_WR_REG(0x0010,0x17b0); LCD_WR_REG(0x0011,0x0137); Delay_nms(50); LCD_WR_REG(0x0012,0x0139); Delay_nms(50); LCD_WR_REG(0x0013,0x1700); LCD_WR_REG(0x0029,0x000c); Delay_nms(50); LCD_WR_REG(0x0020,0x0000);//GRAM水平起始位置 LCD_WR_REG(0x0021,0x0000);// LCD_WR_REG(0x0030,0x0000); LCD_WR_REG(0x0031,0x0507); LCD_WR_REG(0x0032,0x0104); LCD_WR_REG(0x0035,0x0105); LCD_WR_REG(0x0036,0x0404); LCD_WR_REG(0x0037,0x0603); LCD_WR_REG(0x0038,0x0004); LCD_WR_REG(0x0039,0x0007); LCD_WR_REG(0x003c,0x0501); LCD_WR_REG(0x003d,0x0404); //显示开启 LCD_WR_REG(0x0007,0x0073);//写入0173是显示当前GRAM内容 写入0073是不显示当前 } ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TFT屏是低速设备,fsmc的总线等待周期尽可能大些.
#define LCD_CMD (*((u16 volatile *)(0x60000000))) // ILI9320 指令; #define LCD_DATA (*((u16 volatile *)(0x60020000))) // ILI9320 数据; static void LCD_WriteRegILI9320(u8 LCD_Reg, u16 LCD_RegValue) { /* Write 16-bit Index, then Write Reg */ LCD_CMD = LCD_Reg; __nop(); __nop(); /* Write 16-bit Reg */ LCD_DATA = LCD_RegValue; __nop(); __nop(); __nop(); __nop(); } u16 LCD_ReadReg(u8 LCD_Reg) { u16 lcd; /* Write 16-bit Index (then Read Reg) */ LCD_CMD = LCD_Reg; __nop(); __nop(); /* Read 16-bit Reg */ lcd = LCD_DATA; return (lcd); } |
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