php网站开发软件编程,烟台网站设计公司,vue旅游网站怎么做,wordpress主机中文网本文将使用安富莱的STM32H743XIH板子驱动SDRAM 引脚连接情况
一、CubeMx配置工程 1、开启调试口 2、开启外部高速时钟 配置时钟树
3、开启串口1 4、配置MPU
按照安富莱的例程配置#xff1a;
/*
********************************************************************…本文将使用安富莱的STM32H743XIH板子驱动SDRAM 引脚连接情况
一、CubeMx配置工程 1、开启调试口 2、开启外部高速时钟 配置时钟树
3、开启串口1 4、配置MPU
按照安富莱的例程配置
/*
*********************************************************************************************************
* 函 数 名: MPU_Config
* 功能说明: 配置MPU
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
static void MPU_Config( void )
{MPU_Region_InitTypeDef MPU_InitStruct;/* 禁止 MPU */HAL_MPU_Disable();/* 配置AXI SRAM的MPU属性为Write back, Read allocateWrite allocate */MPU_InitStruct.Enable MPU_REGION_ENABLE;MPU_InitStruct.BaseAddress 0x24000000;MPU_InitStruct.Size MPU_REGION_SIZE_512KB;MPU_InitStruct.AccessPermission MPU_REGION_FULL_ACCESS;MPU_InitStruct.IsBufferable MPU_ACCESS_BUFFERABLE;MPU_InitStruct.IsCacheable MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsShareable MPU_ACCESS_NOT_SHAREABLE;MPU_InitStruct.Number MPU_REGION_NUMBER0;MPU_InitStruct.TypeExtField MPU_TEX_LEVEL1;MPU_InitStruct.SubRegionDisable 0x00;MPU_InitStruct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/* 配置FMC扩展IO的MPU属性为Device或者Strongly Ordered */MPU_InitStruct.Enable MPU_REGION_ENABLE;MPU_InitStruct.BaseAddress 0x60000000;MPU_InitStruct.Size ARM_MPU_REGION_SIZE_64KB; MPU_InitStruct.AccessPermission MPU_REGION_FULL_ACCESS;MPU_InitStruct.IsBufferable MPU_ACCESS_BUFFERABLE;MPU_InitStruct.IsCacheable MPU_ACCESS_NOT_CACHEABLE; /* 不能用MPU_ACCESS_CACHEABLE;会出现2次CS、WE信号 */MPU_InitStruct.IsShareable MPU_ACCESS_NOT_SHAREABLE;MPU_InitStruct.Number MPU_REGION_NUMBER1;MPU_InitStruct.TypeExtField MPU_TEX_LEVEL0;MPU_InitStruct.SubRegionDisable 0x00;MPU_InitStruct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/* 配置SDRAM的MPU属性为Write back, Read allocateWrite allocate */MPU_InitStruct.Enable MPU_REGION_ENABLE;MPU_InitStruct.BaseAddress 0xC0000000;MPU_InitStruct.Size MPU_REGION_SIZE_32MB;MPU_InitStruct.AccessPermission MPU_REGION_FULL_ACCESS;MPU_InitStruct.IsBufferable MPU_ACCESS_BUFFERABLE;MPU_InitStruct.IsCacheable MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsShareable MPU_ACCESS_NOT_SHAREABLE;MPU_InitStruct.Number MPU_REGION_NUMBER2;MPU_InitStruct.TypeExtField MPU_TEX_LEVEL1;MPU_InitStruct.SubRegionDisable 0x00;MPU_InitStruct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/*使能 MPU */HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}/*
*********************************************************************************************************
* 函 数 名: CPU_CACHE_Enable
* 功能说明: 使能L1 Cache
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
static void CPU_CACHE_Enable(void)
{/* 使能 I-Cache */SCB_EnableICache();/* 使能 D-Cache */SCB_EnableDCache();
}5、配置FMC 调整引脚和硬件接线图一致 注意FMC时钟 生成代码工程…
二、编写代码
1、添加文件至工程
common_driver.c|common_driver.h bsp.c|bsp.h sdram_driver.c|sdram_driver.h
common_driver.h
#ifndef _common_driver_H_
#define _common_driver_H_
#ifdef __Cplusplus
#extern C {
#endif//本文件使用宏的方式开启附加功能
#define dcommonEnable_STM32 //使能stm32功能
#define dcommonEnable_PID //使能PID功能#include stdint.h
#include stdlib.h
#include stdio.h
#include string.h
#include math.h#define dBOOL(x) (x?eStatus_Valid:eStatus_Invalid)//逻辑值:真-1,假-0typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef int8_t s8;
typedef int16_t s16;
typedef int32_t s32;typedef struct
{unsigned char byte1;unsigned char byte2;unsigned char byte3;unsigned char byte4;
}Byte4_MemoryParameterStructDef;typedef struct
{unsigned char byte1;unsigned char byte2;
}Byte2_MemoryParameterStructDef;typedef union
{short int Value;Byte2_MemoryParameterStructDef Memory;
}Convert_ShortIntParameter_UnionDef;typedef union
{unsigned short int Value;Byte2_MemoryParameterStructDef Memory;
}Convert_UnsignedShortIntParameter_UnionDef;typedef union
{unsigned long int Value;Byte4_MemoryParameterStructDef Memory;
}Convert_UnsignedLongIntParameter_UnionDef;typedef union
{float Value;Byte4_MemoryParameterStructDef Memory;
}Convert_FloatParameter_UnionDef;typedef struct
{uint8_t hour;uint8_t minute;uint8_t second;uint8_t millisecond;
}Time24Format_StructDef;typedef enum
{eStatus_Invalid 0,eStatus_Valid 1
}status_EnumDef;void LinearFitCoefficient(double *pA,double *pB,double x[],double y[],unsigned short int dataSize);
unsigned long int DichotomyFindPos(float target,float *pdata,unsigned long int len);//STM32支持区
#ifdef dcommonEnable_STM32
#include main.h
#pragma diag_suppress 177 //忽略编译时函数定义但是没有引用的警告#define dSET_PIN(GPIOx,Pin) GPIOx-BSRR Pin //引脚置1
#define dRESET_PIN(GPIOx,Pin) GPIOx-BSRR ((uint32_t)Pin 16u) //引脚置0
#define dPIN_WRITE(GPIOx,Pin,x) GPIOx-BSRR ((uint32_t)Pin ((x)?0u:16u))
#define dPIN_READ(GPIOx,Pin) (GPIOx-IDR Pin)?1:0 //获取引脚状态
#define dxPIN_MODE_IN(gpio,pin) {gpio-MODER ~(3(pin*2));gpio-MODER | 0(pin*2);}//配置引脚为输入模式
#define dxPIN_MODE_OUT(gpio,pin) {gpio-MODER ~(3(pin*2));gpio-MODER | 1(pin*2);}//配置引脚为输出模式
#define dPIN_TURN(GPIOx,Pin) HAL_GPIO_TogglePin(GPIOx,Pin)#endif//PID功能支持区
#ifdef dcommonEnable_PID
typedef struct
{float target;//目标值float actual;//当前输出值float err;//本次偏差值float err_last;//上一次偏差值float err_next;//上上次的偏差值float integral;//累计误差float Kp;float Ki;float Kd;
}PID_ParameterStructDef;//PID参数结构体float PID_realize_increment(PID_ParameterStructDef *pid,float actual_val,unsigned long int Min,unsigned long int Max);
float PID_realize_location(PID_ParameterStructDef *pid,float actual_val,unsigned long int Min,unsigned long int Max);#endif#ifdef __Cplusplus
}
#endif
#endif
common_driver.c
/**********************************************************************
*file:开发常用函数|宏文件
*author:残梦
*versions:V1.2
*date:2023.08.10
*note:
**********************************************************************/
#include common_driver.h/*开始1、基础功能******************************************************/
/****************************************************
function:计算数据的拟合系数
param:*pA,*pB--系数x[],y[]--数据源dataSize--数据个数
return:void
note:拟合曲线yAxB
****************************************************/
void LinearFitCoefficient(double *pA,double *pB,double x[],double y[],unsigned short int dataSize)
{unsigned short int i 0;double AverX 0.0f,AverY 0.0f,a1 0.0f,a2 0.0f;if(dataSize 0){*pA *pB 0.0;return;}else if(dataSize 1){*pA 0.0;*pB y[0];return;}while(i dataSize) {AverX x[i];AverY y[i];i;}AverX / (double)(dataSize);AverY / (double)(dataSize);a1 a2 0.0f;for(i0;idataSize;i){a1 (x[i] - AverX)*(y[i] - AverY);a2 (x[i] - AverX)*(x[i] - AverX);}*pA a1/a2;*pB AverY - (*pA)*AverX;
}/****************************************
function:二分法查找target在数组pdata中的最相邻位置
param:target--目标数据pdata--源数据len--源数据长度
return:[0,len-1]
note:
****************************************/
unsigned long int DichotomyFindPos(float target,float *pdata,unsigned long int len)
{unsigned long int pos 0,posl 0,posr 0;unsigned char flag 0;//for(unsigned long int z 0;z len;z){printf([%d]%f\n,z,*(pdataz));}if(len 2){return 0;}//判定数据是否在区间外flag (*(pdata len -1) *pdata)?1:0;if(flag 1)//递增数据{if(target *pdata)return 0;else if(target *(pdata len -1))return (len -1);}else{if(target *pdata)return 0;else if(target *(pdata len -1))return (len -1);}unsigned long int num 0;//区间内的数据posl 0;posr len -1;while((posl ! (posr-1)) (posl ! posr)){pos (posr posl)/2;if(flag 1){if(target (*(pdata pos))){posr pos;}else{posl pos;}}else{if(target (*(pdata pos))){posr pos;}else{posl pos;}}num;//printf(%d [%d,%d][%f,%f]\n,num,posl,posr,*(pdata posl),*(pdata posr));}//printf([pos,tar][%d,%f] num%d\n,posl,target,num);return posl;
}/*结束****************************************************************//*开始1、STM32支持区***************************************************/
#ifdef dcommonEnable_STM32
#include usart.h/******************************
function:printf打印使用
param:
return:
remark:
******************************/
int fputc(int ch,FILE *f)
{unsigned char temp[1] {ch};HAL_UART_Transmit(huart1,temp,1,2);return(ch);
}
#endif
/*结束****************************************************************//*开始1、PID功能支持区*************************************************/
#ifdef dcommonEnable_PID
/****************************************
function:增量式PID算法
param: pid--PID_ParameterStructDefactual_val--当前采集值Min--输出限幅最小值Max--输出限幅最大值
return:
note:
****************************************/
float PID_realize_increment(PID_ParameterStructDef *pid,float actual_val,unsigned long int Min,unsigned long int Max)
{/*计算目标值与实际值的误差*/pid-errpid-target-actual_val;/*PID算法实现*/pid-actual pid-Kp*(pid-err - pid-err_next) pid-Ki*pid-err pid-Kd*(pid-err - 2 * pid-err_next pid-err_last);/*传递误差*/pid-err_last pid-err_next;pid-err_next pid-err;pid-actual (pid-actual Min)?Min:pid-actual;pid-actual (pid-actual Max)?Max:pid-actual;/*返回当前实际值*/return pid-actual;
}/****************************************
function:位置式PID算法
param: pid--PID_ParameterStructDefactual_val--当前采集值Min--输出限幅最小值Max--输出限幅最大值
return:
note:
****************************************/
float PID_realize_location(PID_ParameterStructDef *pid,float actual_val,unsigned long int Min,unsigned long int Max)
{/*计算目标值与实际值的误差*/pid-errpid-target-actual_val;/*误差累积*/pid-integralpid-err;/*PID算法实现*/pid-actualpid-Kp*pid-err pid-Ki*pid-integral pid-Kd * (pid-err - pid-err_last);/*误差传递*/pid-err_lastpid-err;pid-actual (pid-actual Min)?Min:pid-actual;pid-actual (pid-actual Max)?Max:pid-actual;return pid-actual;
}#endif
bsp.h
#ifndef _bsp_H_
#define _bsp_H_
#ifdef __Cplusplus
#extern C {
#endif
#include stdint.hint32_t bsp_init(void);#ifdef __Cplusplus
}
#endif
#endif
bsp.c
/**********************************************************************
*file:板级支持包文件
*author:残梦
*versions:V1.0
*date:2023.08.10
*note:
**********************************************************************/
#include bsp.h
#include common_driver.h/****************************************
function:板硬件初始化
param:void
return:小于0--失败,0--成功
note:
****************************************/
int32_t bsp_init(void)
{return 0;
}
sdram_driver.h
#ifndef _sdram_driver_H_
#define _sdram_driver_H_
#ifdef __Cplusplus
#extern C {
#endif
#include main.h#define EXT_SDRAM_ADDR ((uint32_t)0xC0000000)
#define EXT_SDRAM_SIZE (32 * 1024 * 1024)/* LCD显存,第1页, 分配2M字节 */
#define SDRAM_LCD_BUF1 EXT_SDRAM_ADDR/* LCD显存,第2页, 分配2M字节 */
#define SDRAM_LCD_BUF2 (EXT_SDRAM_ADDR SDRAM_LCD_SIZE)#define SDRAM_LCD_SIZE (2 * 1024 * 1024) /* 每层2M */
#define SDRAM_LCD_LAYER 2 /* 2层 *//* 剩下的12M字节提供给应用程序使用 */
#define SDRAM_APP_BUF (EXT_SDRAM_ADDR SDRAM_LCD_SIZE * SDRAM_LCD_LAYER)
#define SDRAM_APP_SIZE (EXT_SDRAM_SIZE - SDRAM_LCD_SIZE * SDRAM_LCD_LAYER)void SDRAM_Initialization_Sequence(SDRAM_HandleTypeDef *hsdram);
uint32_t bsp_TestExtSDRAM1(void);#ifdef __Cplusplus
}
#endif
#endif
sdram_driver.c
/**********************************************************************
*file:外部SDRAM驱动文件:SDRAM型号IS42S32800G-6BLI, 32位带宽, 容量32MB, 6ns速度(166MHz)
*author:残梦
*versions:V1.0
*date:2023.06.02
*note:-- 安富莱STM32-V7发板 SDRAM GPIO 定义------------------------------------------------------------------------------- SDRAM pins assignment -------------------------------------------------------------------------------| PD0 - FMC_D2 | PE0 - FMC_NBL0 | PF0 - FMC_A0 | PG0 - FMC_A10 || PD1 - FMC_D3 | PE1 - FMC_NBL1 | PF1 - FMC_A1 | PG1 - FMC_A11 || PD8 - FMC_D13 | PE7 - FMC_D4 | PF2 - FMC_A2 | PG4 - FMC_A14 || PD9 - FMC_D14 | PE8 - FMC_D5 | PF3 - FMC_A3 | PG5 - FMC_A15 || PD10 - FMC_D15 | PE9 - FMC_D6 | PF4 - FMC_A4 | PG8 - FC_SDCLK || PD14 - FMC_D0 | PE10 - FMC_D7 | PF5 - FMC_A5 | PG15 - FMC_NCAS || PD15 - FMC_D1 | PE11 - FMC_D8 | PF11 - FC_NRAS |---------------------------------------| PE12 - FMC_D9 | PF12 - FMC_A6 | PG2 --- FMC_A12 (预留64M字节容量和摇杆上键复用| PE13 - FMC_D10 | PF13 - FMC_A7 || PE14 - FMC_D11 | PF14 - FMC_A8 || PE15 - FMC_D12 | PF15 - FMC_A9 |-----------------------------------------------------------| PH2 - FMC_SDCKE0| PI4 - FMC_NBL2 || PH3 - FMC_SDNE0 | PI5 - FMC_NBL3 || PH5 - FMC_SDNW |---------------------------------------------------------------------------- 32-bits Mode: D31-D16 -------------------------------------| PH8 - FMC_D16 | PI0 - FMC_D24 || PH9 - FMC_D17 | PI1 - FMC_D25 || PH10 - FMC_D18 | PI2 - FMC_D26 || PH11 - FMC_D19 | PI3 - FMC_D27 || PH12 - FMC_D20 | PI6 - FMC_D28 || PH13 - FMC_D21 | PI7 - FMC_D29 || PH14 - FMC_D22 | PI9 - FMC_D30 || PH15 - FMC_D23 | PI10 - FMC_D31 |-------------------------------------------------------- Pins remapping -------------------| PC0 - FMC_SDNWE || PC2 - FMC_SDNE0 || PC3 - FMC_SDCKE0|-------------------hsdram1.Instance FMC_SDRAM_DEVICE;hsdram1.Init.SDBank FMC_SDRAM_BANK1;hsdram1.Init.ColumnBitsNumber FMC_SDRAM_COLUMN_BITS_NUM_9;hsdram1.Init.RowBitsNumber FMC_SDRAM_ROW_BITS_NUM_12;hsdram1.Init.MemoryDataWidth FMC_SDRAM_MEM_BUS_WIDTH_32;hsdram1.Init.InternalBankNumber FMC_SDRAM_INTERN_BANKS_NUM_4;hsdram1.Init.CASLatency FMC_SDRAM_CAS_LATENCY_3;//CAS Latency可以设置Latency12和3实际测试Latency3稳定hsdram1.Init.WriteProtection FMC_SDRAM_WRITE_PROTECTION_DISABLE;//禁止写保护hsdram1.Init.SDClockPeriod FMC_SDRAM_CLOCK_PERIOD_2;//FMC时钟200MHz2分频后给SDRAM即100MHzhsdram1.Init.ReadBurst FMC_SDRAM_RBURST_ENABLE;//使能读突发hsdram1.Init.ReadPipeDelay FMC_SDRAM_RPIPE_DELAY_0;//此位定CAS延时后延后多少个SDRAM时钟周期读取数据实际测此位可以设置无需延迟FMC使用的HCLK3时钟200MHz用于SDRAM的话至少2分频也就是100MHz即1个SDRAM时钟周期是10ns下面参数单位均为10ns。Timing.LoadToActiveDelay 2; 20ns, TMRD定义加载模式寄存器的命令与激活命令或刷新命令之间的延迟Timing.ExitSelfRefreshDelay 7; 70ns, TXSR定义从发出自刷新命令到发出激活命令之间的延迟Timing.SelfRefreshTime 4; 50ns, TRAS定义最短的自刷新周期Timing.RowCycleDelay 7; 70ns, TRC定义刷新命令和激活命令之间的延迟Timing.WriteRecoveryTime 2; 20ns, TWR定义在写命令和预充电命令之间的延迟Timing.RPDelay 2; 20ns, TRP定义预充电命令与其它命令之间的延迟Timing.RCDDelay 2; 20ns, TRCD定义激活命令与读/写命令之间的延迟
*********************************************************************/
#include sdram_driver.h#define SDRAM_TIMEOUT ((uint32_t)0xFFFF)
#define REFRESH_COUNT ((uint32_t)1543) /* SDRAM自刷新计数 */ /* SDRAM的参数配置 */
#define SDRAM_MODEREG_BURST_LENGTH_1 ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_LENGTH_2 ((uint16_t)0x0001)
#define SDRAM_MODEREG_BURST_LENGTH_4 ((uint16_t)0x0002)
#define SDRAM_MODEREG_BURST_LENGTH_8 ((uint16_t)0x0004)
#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED ((uint16_t)0x0008)
#define SDRAM_MODEREG_CAS_LATENCY_2 ((uint16_t)0x0020)
#define SDRAM_MODEREG_CAS_LATENCY_3 ((uint16_t)0x0030)
#define SDRAM_MODEREG_OPERATING_MODE_STANDARD ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE ((uint16_t)0x0200)/****************************************************
function:SDRAM初始化序列
param:hsdram: SDRAM句柄
return:void
note:完成SDRAM序列初始化
****************************************************/
void SDRAM_Initialization_Sequence(SDRAM_HandleTypeDef *hsdram)
{FMC_SDRAM_CommandTypeDef Command;__IO uint32_t tmpmrd 0;/*##-1- 时钟使能命令 ##################################################*/Command.CommandMode FMC_SDRAM_CMD_CLK_ENABLE;Command.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1;;Command.AutoRefreshNumber 1;Command.ModeRegisterDefinition 0;/* 发送命令 */HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);/*##-2- 插入延迟至少100us ##################################################*/HAL_Delay(1);/*##-3- 整个SDRAM预充电命令PALL(precharge all) #############################*/Command.CommandMode FMC_SDRAM_CMD_PALL;Command.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1;Command.AutoRefreshNumber 1;Command.ModeRegisterDefinition 0;/* 发送命令 */HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);/*##-4- 自动刷新命令 #######################################################*/Command.CommandMode FMC_SDRAM_CMD_AUTOREFRESH_MODE;Command.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1;Command.AutoRefreshNumber 8;Command.ModeRegisterDefinition 0;/* 发送命令 */HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);/*##-5- 配置SDRAM模式寄存器 ###############################################*/tmpmrd (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1 |SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |SDRAM_MODEREG_CAS_LATENCY_3 |SDRAM_MODEREG_OPERATING_MODE_STANDARD |SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;Command.CommandMode FMC_SDRAM_CMD_LOAD_MODE;Command.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1;Command.AutoRefreshNumber 1;Command.ModeRegisterDefinition tmpmrd;/* 发送命令 */HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);/*##-6- 设置自刷新率 ####################################################*//*SDRAM refresh period / Number of rows*SDRAM时钟速度 – 20 64ms / 4096 *100MHz - 20 1542.5 取值1543*/HAL_SDRAM_ProgramRefreshRate(hsdram, REFRESH_COUNT);
}/*
*********************************************************************************************************
* 函 数 名: bsp_TestExtSDRAM
* 功能说明: 扫描测试外部SDRAM的全部单元。
* 形 参: 无
* 返 回 值: 0 表示测试通过 大于0表示错误单元的个数。
*********************************************************************************************************
*/
uint32_t bsp_TestExtSDRAM1(void)
{uint32_t i;uint32_t *pSRAM;uint8_t *pBytes;uint32_t err;const uint8_t ByteBuf[4] {0x55, 0xA5, 0x5A, 0xAA};/* 写SRAM */pSRAM (uint32_t *)EXT_SDRAM_ADDR;for (i 0; i EXT_SDRAM_SIZE / 4; i){*pSRAM i;}/* 读SRAM */err 0;pSRAM (uint32_t *)EXT_SDRAM_ADDR;for (i 0; i EXT_SDRAM_SIZE / 4; i){if (*pSRAM ! i){err;}}if (err 0){return (4 * err);}/* 对SRAM 的数据求反并写入 */pSRAM (uint32_t *)EXT_SDRAM_ADDR;for (i 0; i EXT_SDRAM_SIZE / 4; i){*pSRAM ~*pSRAM;pSRAM;}/* 再次比较SDRAM的数据 */err 0;pSRAM (uint32_t *)EXT_SDRAM_ADDR;for (i 0; i EXT_SDRAM_SIZE / 4; i){if (*pSRAM ! (~i)){err;}}if (err 0){return (4 * err);}/* 测试按字节方式访问, 目的是验证 FSMC_NBL0 、 FSMC_NBL1 口线 */pBytes (uint8_t *)EXT_SDRAM_ADDR;for (i 0; i sizeof(ByteBuf); i){*pBytes ByteBuf[i];}/* 比较SDRAM的数据 */err 0;pBytes (uint8_t *)EXT_SDRAM_ADDR;for (i 0; i sizeof(ByteBuf); i){if (*pBytes ! ByteBuf[i]){err;}}if (err 0){return err;}return 0;
}
2、fmc.c初始化后添加SDRAM初始序列
添加头文件
/* USER CODE BEGIN 0 */
#include sdram_driver.h
/* USER CODE END 0 */void MX_FMC_Init(void)函数中添加 /* USER CODE BEGIN FMC_Init 2 */SDRAM_Initialization_Sequence(hsdram1);//添加SDRAM初始序列/* USER CODE END FMC_Init 2 */3、main.c文件对sdram读写测试
main.c文件
/* USER CODE BEGIN Header */
/********************************************************************************* file : main.c* brief : Main program body******************************************************************************* attention** h2centercopy; Copyright (c) 2023 STMicroelectronics.* All rights reserved./center/h2** This software component is licensed by ST under BSD 3-Clause license,* the License; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include main.h
#include usart.h
#include gpio.h
#include fmc.h/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include bsp.h
#include common_driver.h
#include sdram_driver.h
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD *//* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*//* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MPU_Config(void);
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//* USER CODE END 0 *//*** brief The application entry point.* retval int*/
int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MPU Configuration--------------------------------------------------------*/MPU_Config();/* Enable I-Cache---------------------------------------------------------*/SCB_EnableICache();/* Enable D-Cache---------------------------------------------------------*/SCB_EnableDCache();/* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_FMC_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */if(bsp_init() 0){printf(error:bsp_init()\r\n);Error_Handler();}/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */printf(错误数:%d\r\n,bsp_TestExtSDRAM1());//SDRAM读写测试HAL_Delay(1000);}/* USER CODE END 3 */
}/*** brief System Clock Configuration* retval None*/
void SystemClock_Config(void)
{RCC_OscInitTypeDef RCC_OscInitStruct {0};RCC_ClkInitTypeDef RCC_ClkInitStruct {0};/** Supply configuration update enable*/HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);/** Configure the main internal regulator output voltage*/__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType RCC_OSCILLATORTYPE_HSE;RCC_OscInitStruct.HSEState RCC_HSE_ON;RCC_OscInitStruct.PLL.PLLState RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLM 5;RCC_OscInitStruct.PLL.PLLN 160;RCC_OscInitStruct.PLL.PLLP 2;RCC_OscInitStruct.PLL.PLLQ 2;RCC_OscInitStruct.PLL.PLLR 2;RCC_OscInitStruct.PLL.PLLRGE RCC_PLL1VCIRANGE_2;RCC_OscInitStruct.PLL.PLLVCOSEL RCC_PLL1VCOWIDE;RCC_OscInitStruct.PLL.PLLFRACN 0;if (HAL_RCC_OscConfig(RCC_OscInitStruct) ! HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses clocks*/RCC_ClkInitStruct.ClockType RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;RCC_ClkInitStruct.SYSCLKSource RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.SYSCLKDivider RCC_SYSCLK_DIV1;RCC_ClkInitStruct.AHBCLKDivider RCC_HCLK_DIV2;RCC_ClkInitStruct.APB3CLKDivider RCC_APB3_DIV2;RCC_ClkInitStruct.APB1CLKDivider RCC_APB1_DIV2;RCC_ClkInitStruct.APB2CLKDivider RCC_APB2_DIV2;RCC_ClkInitStruct.APB4CLKDivider RCC_APB4_DIV2;if (HAL_RCC_ClockConfig(RCC_ClkInitStruct, FLASH_LATENCY_2) ! HAL_OK){Error_Handler();}
}/* USER CODE BEGIN 4 *//* USER CODE END 4 *//* MPU Configuration */void MPU_Config(void)
{MPU_Region_InitTypeDef MPU_InitStruct {0};/* Disables the MPU */HAL_MPU_Disable();/** Initializes and configures the Region and the memory to be protected*/MPU_InitStruct.Enable MPU_REGION_ENABLE;MPU_InitStruct.Number MPU_REGION_NUMBER0;MPU_InitStruct.BaseAddress 0x24000000;MPU_InitStruct.Size MPU_REGION_SIZE_512KB;MPU_InitStruct.SubRegionDisable 0x0;MPU_InitStruct.TypeExtField MPU_TEX_LEVEL1;MPU_InitStruct.AccessPermission MPU_REGION_FULL_ACCESS;MPU_InitStruct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE;MPU_InitStruct.IsShareable MPU_ACCESS_NOT_SHAREABLE;MPU_InitStruct.IsCacheable MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsBufferable MPU_ACCESS_BUFFERABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/** Initializes and configures the Region and the memory to be protected*/MPU_InitStruct.Number MPU_REGION_NUMBER1;MPU_InitStruct.BaseAddress 0x60000000;MPU_InitStruct.Size MPU_REGION_SIZE_64KB;MPU_InitStruct.TypeExtField MPU_TEX_LEVEL0;MPU_InitStruct.IsCacheable MPU_ACCESS_NOT_CACHEABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/** Initializes and configures the Region and the memory to be protected*/MPU_InitStruct.Number MPU_REGION_NUMBER2;MPU_InitStruct.BaseAddress 0xC0000000;MPU_InitStruct.Size MPU_REGION_SIZE_32MB;MPU_InitStruct.IsCacheable MPU_ACCESS_CACHEABLE;MPU_InitStruct.IsBufferable MPU_ACCESS_NOT_BUFFERABLE;HAL_MPU_ConfigRegion(MPU_InitStruct);/* Enables the MPU */HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);}/*** brief This function is executed in case of error occurrence.* retval None*/
void Error_Handler(void)
{/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state */__disable_irq();printf(void Error_Handler(void)\r\n);while (1){}/* USER CODE END Error_Handler_Debug */
}#ifdef USE_FULL_ASSERT
/*** brief Reports the name of the source file and the source line number* where the assert_param error has occurred.* param file: pointer to the source file name* param line: assert_param error line source number* retval None*/
void assert_failed(uint8_t *file, uint32_t line)
{/* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,ex: printf(Wrong parameters value: file %s on line %d\r\n, file, line) *//* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
三、测试结果及完整工程
测试结果ok 完整工程 链接https://pan.baidu.com/s/1SfxQO7QM_e1GsVD_yJOckg 提取码hk7u
三、本章学习笔记待写
