求助，ＦＳＭＣ如何挂载ＳＲＡＭ和ＬＣＤ

studyembred · 发表于 2013-10-29 10:16:39

芯片：stm32f103zc

目标，sram就是想当内存使用，让内部内存作为栈，或者更优配置

求步奏或者教程历程

部分源码，

#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)

#ifdef DATA_IN_ExtSRAM

SystemInit_ExtMemCtl();

本函数为默认例程，我对比了一下我的板子，是使用 NE3，SRAM 0x68000000

void SystemInit_ExtMemCtl(void)

{

RCC->AHBENR = 0x00000114;

RCC->APB2ENR = 0x000001E0;

GPIOD->CRL = 0x44BB44BB; //PD7(NE1)（RESEVERD）

GPIOD->CRH = 0xBBBBBBBB; //PD8-PD15 OUTPUT

GPIOE->CRL = 0xB44444BB;

GPIOE->CRH = 0xBBBBBBBB;

GPIOF->CRL = 0x44BBBBBB;

GPIOF->CRH = 0xBBBB4444;

GPIOG->CRL = 0x44BBBBBB;

GPIOG->CRH = 0x44444B44;

FSMC_Bank1->BTCR[4] = 0x00001011;

FSMC_Bank1->BTCR[5] = 0x00000200;

}

以下为LCD FSMC配置看，请问下海缺少了什么，外部SRAM

void LCD_FSMCInit()//LCD FSMC 初始化

{

FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;

FSMC_NORSRAMTimingInitTypeDef FSMC_NORSRAMTimingInitStructure;

/*-- FSMC Configuration ------------------------------------------------------*/

/*----------------------- SRAM Bank 1 ----------------------------------------*/

/* FSMC_Bank1_NORSRAM4 configuration */

#ifdef TFT_61059

FSMC_NORSRAMTimingInitStructure.FSMC_AddressSetupTime = 1;

FSMC_NORSRAMTimingInitStructure.FSMC_AddressHoldTime = 0;

FSMC_NORSRAMTimingInitStructure.FSMC_DataSetupTime = 2;

#endif

#ifdef TFT_HX8352

FSMC_NORSRAMTimingInitStructure.FSMC_AddressSetupTime = 2;

FSMC_NORSRAMTimingInitStructure.FSMC_AddressHoldTime = 1;

FSMC_NORSRAMTimingInitStructure.FSMC_DataSetupTime = 3;

#endif

FSMC_NORSRAMTimingInitStructure.FSMC_BusTurnAroundDuration = 0;

FSMC_NORSRAMTimingInitStructure.FSMC_CLKDivision = 0;

FSMC_NORSRAMTimingInitStructure.FSMC_DataLatency = 0;

FSMC_NORSRAMTimingInitStructure.FSMC_AccessMode = FSMC_AccessMode_B;

/* Color LCD configuration ------------------------------------

LCD configured as follow:

- Data/Address MUX = Disable

- Memory Type = SRAM

- Data Width = 16bit

- Write Operation = Enable

- Extended Mode = Enable

- Asynchronous Wait = Disable */

FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;

FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;

FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;

FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;

FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;

FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;

FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;

FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;

FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;

FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;

FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;

FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;

FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);

/* - BANK 1 (of NOR/SRAM Bank 0~3) is enabled */

FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);

}

studyembred · 发表于 2013-10-29 10:23:24

在线急等，发现这样的配置搞到我板子里，LCD不亮了

八度空间 · 发表于 2013-10-29 11:29:38

回复【2楼】studyembred:
---------------------------------
初看代码没什么问题，你的是战舰板子？串口有打印出TFT驱动器的型号么？

studyembred · 发表于 2013-10-29 11:36:53

不是啊，不是板子，一个产品要加SRAM，另外本身就挂载了LCD

正点原子 · 发表于 2013-10-29 12:20:04

回复【4楼】studyembred:
---------------------------------
请参考下我们战舰板的：外部SRAM例程

studyembred · 发表于 2013-10-29 13:15:17

你好，请问下是这个么,

//初始化外部SRAMvoid FSMC_SRAM_Init(void){ RCC->AHBENR|=1<<8; //使能FSMC时钟 RCC->APB2ENR|=1<<5; //使能PORTD时钟 RCC->APB2ENR|=1<<6; //使能PORTE时钟 RCC->APB2ENR|=1<<7; //使能PORTF时钟 RCC->APB2ENR|=1<<8; //使能PORTG时钟
//PORTD复用推挽输出 GPIOD->CRH&=0X00000000; GPIOD->CRH|=0XBBBBBBBB; GPIOD->CRL&=0XFF00FF00; GPIOD->CRL|=0X00BB00BB; //PORTE复用推挽输出 GPIOE->CRH&=0X00000000; GPIOE->CRH|=0XBBBBBBBB; GPIOE->CRL&=0X0FFFFF00; GPIOE->CRL|=0XB00000BB; //PORTF复用推挽输出 GPIOF->CRH&=0X0000FFFF; GPIOF->CRH|=0XBBBB0000; GPIOF->CRL&=0XFF000000; GPIOF->CRL|=0X00BBBBBB;
//PORTG复用推挽输出 PG10->NE3 GPIOG->CRH&=0XFFFFF0FF; GPIOG->CRH|=0X00000B00; GPIOG->CRL&=0XFF000000; GPIOG->CRL|=0X00BBBBBB; //寄存器清零 //bank1有NE1~4,每一个有一个BCR+TCR，所以总共八个寄存器。 //这里我们使用NE3 ，也就对应BTCR[4],[5]。 FSMC_Bank1->BTCR[4]=0X00000000; FSMC_Bank1->BTCR[5]=0X00000000; FSMC_Bank1E->BWTR[4]=0X00000000; //操作BCR寄存器使用异步模式,模式A(读写共用一个时序寄存器) //BTCR[偶数]:BCR寄存器;BTCR[奇数]:BTR寄存器 FSMC_Bank1->BTCR[4]|=1<<12;//存储器写使能 FSMC_Bank1->BTCR[4]|=1<<4; //存储器数据宽度为16bit //操作BTR寄存器 FSMC_Bank1->BTCR[5]|=3<<8; //数据保持时间（DATAST）为3个HCLK 4/72M=55ns(对EM的SRAM芯片) FSMC_Bank1->BTCR[5]|=0<<4; //地址保持时间（ADDHLD）未用到 FSMC_Bank1->BTCR[5]|=0<<0; //地址建立时间（ADDSET）为2个HCLK 1/36M=27ns //闪存写时序寄存器 FSMC_Bank1E->BWTR[4]=0x0FFFFFFF;//默认值 //使能BANK1区域3 FSMC_Bank1->BTCR[4]|=1<<0; }

int main(void)

{

u8 key;

u8 i=0;

u32 ts=0;

Stm32_Clock_Init(9); //系统时钟设置

uart_init(72,9600); //串口初始化为9600

delay_init(72); //延时初始化

LED_Init(); //初始化与LED连接的硬件接口

LCD_Init(); //初始化LCD

usmart_dev.init(72); //初始化USMART

KEY_Init(); //按键初始化