(实验记录)关于stm32cube对SRAM的操作和设置
参考的官方EVAL板的sram实验程序修改为stm32f407discovery板实用,
sram采用IS62WV51216BLL,
A0~A18地址线,D0~D15数据线
文档和stm32cubemx设置如下:
电路连接如下:
设置如下:
仿真结果如下:
结果:验证写入和读出正确.
主函数main程序如下:
本程序提供下载: 区,文件名:最新stm32f407zgt-sram-cubemx.zip
sram采用IS62WV51216BLL,
A0~A18地址线,D0~D15数据线
文档和stm32cubemx设置如下:
电路连接如下:
设置如下:
仿真结果如下:
结果:验证写入和读出正确.
主函数main程序如下:
/[i] Includes ------------------------------------------------------------------[/i]/
#include "stm32f4xx_hal.h"
#include "gpio.h"
#include "fsmc.h"
/[i] USER CODE BEGIN Includes [/i]/
#define SRAM_BANK_ADDR ((uint32_t)0x64000000)
/[i] USER CODE END Includes [/i]/
/[i] Private variables ---------------------------------------------------------[/i]/
/[i] USER CODE BEGIN PV [/i]/
/[i] USER CODE END PV [/i]/
/[i] Private function prototypes -----------------------------------------------[/i]/
void SystemClock_Config(void);
/[i] USER CODE BEGIN PFP [/i]/
/[i] USER CODE END PFP [/i]/
/[i] USER CODE BEGIN 0 [/i]/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
#define BUFFER_SIZE ((uint32_t)0x0100)
#define WRITE_READ_ADDR ((uint32_t)0x0800)
uint16_t aTxBuffer;
uint16_t aRxBuffer;
__IO uint32_t uwWriteReadStatus = 0;
uint32_t uwIndex = 0;
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLenght, uint16_t uwOffset);
static TestStatus Buffercmp(uint16_t [i]pBuffer1, uint16_t [/i]pBuffer2, uint16_t BufferLength);
/[i] USER CODE END 0 [/i]/
int main(void)
{
/[i] USER CODE BEGIN 1 [/i]/
/[i] USER CODE END 1 [/i]/
/[i] MCU Configuration----------------------------------------------------------[/i]/
/[i] Reset of all peripherals, Initializes the Flash interface and the Systick. [/i]/
HAL_Init();
/[i] Configure the system clock [/i]/
SystemClock_Config();
/[i] Initialize all configured peripherals [/i]/
MX_GPIO_Init();
MX_FSMC_Init();
/[i] USER CODE BEGIN 2 [/i]/
Fill_Buffer(aTxBuffer, BUFFER_SIZE, 0xC20F);
for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)
{
[url=__IO uint16_t[/i]]i[/url] (SRAM_BANK_ADDR + WRITE_READ_ADDR + 2*uwIndex) = aTxBuffer;
}
/[i] Read back data from the SRAM memory [/i]/
for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)
{
aRxBuffer = [url=__IO uint16_t[/i]]i[/url] (SRAM_BANK_ADDR + WRITE_READ_ADDR + 2*uwIndex);
}
/[i][size=16]-3- Checking data integrity [/size]####################################[size=16]#[size=16]#[/i]/ [/size][/size]
uwWriteReadStatus = Buffercmp(aTxBuffer, aRxBuffer, BUFFER_SIZE);
if (uwWriteReadStatus != PASSED)
{
/[i] KO [/i]/
/[i] Turn on LED2 [/i]/
while(1)
{
HAL_Delay (300);
HAL_GPIO_TogglePin (GPIOF,GPIO_PIN_6);
}
}
else
{
/[i] OK [/i]/
/[i] Turn on LED1 [/i]/
while(1)
{
HAL_Delay (1000);
HAL_GPIO_TogglePin (GPIOF,GPIO_PIN_6);
}
}
/[i] USER CODE END 2 [/i]/
/[i] USER CODE BEGIN 3 [/i]/
/[i] Infinite loop [/i]/
while (1)
{
HAL_Delay (2000);
HAL_GPIO_TogglePin (GPIOF,GPIO_PIN_6);
}
/[i] USER CODE END 3 [/i]/
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
__PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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 = 25;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}
/[i] USER CODE BEGIN 4 [/i]/
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLenght, uint16_t uwOffset)
{
uint16_t tmpIndex = 0;
/[i] Put in global buffer different values [/i]/
for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++ )
{
pBuffer = tmpIndex + uwOffset;
}
}
/**
* @brief Compares two buffers.
* @param pBuffer1, pBuffer2: buffers to be compared.
* @param BufferLength: buffer's length
* @retval PASSED: pBuffer identical to pBuffer1
* FAILED: pBuffer differs from pBuffer1
*/
static TestStatus Buffercmp(uint16_t[i] pBuffer1, uint16_t[/i] pBuffer2, uint16_t BufferLength)
{
while (BufferLength--)
{
if ([i]pBuffer1 != [/i]pBuffer2)
{
return FAILED;
}
pBuffer1++;
pBuffer2++;
}
return PASSED;
}
/[i] USER CODE END 4 [/i]/
本程序提供下载: 区,文件名:最新stm32f407zgt-sram-cubemx.zip
11 个回复
admin
赞同来自: wuqiling
如下: 只修改了读写部分的代码
HAL_SRAM_Write_16b (&hsram1 ,(uint32_t *)(SRAM_BANK_ADDR + WRITE_READ_ADDR),aTxBuffer ,0x100);//写
HAL_SRAM_Read_16b (&hsram1 ,(uint32_t *)(SRAM_BANK_ADDR + WRITE_READ_ADDR),aRxBuffer ,0x100);//读
以上的各种setup时间我按照最长的来的(人懒没办法~~)
时间设置要参考芯片的datasheet文档,里面有计算方法........
有知道计算方法的可以来分享下吗?
admin
赞同来自: popdes 、L
admin
赞同来自: L 、981868085@qq.com 、wbdxz
上面的图片是这个芯片的文档说明里面的.
看到地址的建立和保持时间都可以是0
而数据的建立时间30ns.
而我们系统时钟是168M相当于5.96ns,也就是只能算成5ns来用
所以按照5ns x 6 = 30ns ,但是考虑到其他因素,将时间放长到7
所以得到以下时间:
将上面的程序替换为这个时间,可以大大的加快sram的读写速度.
以上,结束.
本文相关程序已发布到本站 **** 区,大家可以参考使用.
wn1900 - 90H
赞同来自:
YJ
赞同来自:
默以太
赞同来自: Ambrco
我已经验证，HAL_SRAM_Write_16b，HAL_SRAM_Read_16b 读写OK .
____________________
赞同来自:
写入后读出来为什么都是读出的最后一个数值，这官方函数有
问题吗？
____________________
赞同来自: 涅槃雨季
/**
******************************************************************************
* File Name : main.h
* Description : This file contains the common defines of the application
******************************************************************************
** This notice applies to any and all portions of this file
* that are not between comment pairs USER CODE BEGIN and
* USER CODE END. Other portions of this file, whether
* inserted by the user or by software development tools
* are owned by their respective copyright owners.
*
* COPYRIGHT(c) 2017 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H
/* Includes ------------------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private define ------------------------------------------------------------*/
#define LED1_Pin GPIO_PIN_1
#define LED1_GPIO_Port GPIOA
#define LED2_Pin GPIO_PIN_2
#define LED2_GPIO_Port GPIOA
/* USER CODE BEGIN Private defines */
#define SRAM_BANK_ADDR ((uint32_t)0x68000000)
/* #define SRAM_MEMORY_WIDTH FMC_NORSRAM_MEM_BUS_WIDTH_8 */
#define SRAM_MEMORY_WIDTH FMC_NORSRAM_MEM_BUS_WIDTH_16
#define SRAM_TIMEOUT ((uint32_t)0xFFFF)
/* USER CODE END Private defines */
void _Error_Handler(char *, int);
#define Error_Handler() _Error_Handler(__FILE__, __LINE__)
/**
* @}
*/
/**
* @}
*/
#endif /* __MAIN_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
/**
******************************************************************************
* File Name : main.c
* Description : Main program body
******************************************************************************
** This notice applies to any and all portions of this file
* that are not between comment pairs USER CODE BEGIN and
* USER CODE END. Other portions of this file, whether
* inserted by the user or by software development tools
* are owned by their respective copyright owners.
*
* COPYRIGHT(c) 2017 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f7xx_hal.h"
#include "usart.h"
#include "gpio.h"
#include "fmc.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
#define BUFFER_SIZE ((uint32_t)0x0040)
#define WRITE_READ_ADDR ((uint32_t)0x0400)
#define WRITING_OFFSET ((uint32_t)0xC20F)
/* Read/Write Buffers */
static uint16_t aTxBuffer[BUFFER_SIZE];
static uint16_t aRxBuffer[BUFFER_SIZE];
/* Status variables */
__IO uint32_t uwWriteReadStatus = 0;
/* Counter index */
uint32_t uwIndex = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset);
static uint8_t Buffercmp(uint16_t *pBuffer1, uint16_t *pBuffer2, uint16_t BufferLength);
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* 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_UART4_Init();
MX_FMC_Init();
HAL_Delay (2000);
/* USER CODE BEGIN 2 */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_RESET);
/*##-2- SRAM memory read/write access ######################################*/
/* Fill the buffer to write */
Fill_Buffer(aTxBuffer, BUFFER_SIZE, WRITING_OFFSET);
/* Write data to the SRAM memory */
if( HAL_OK==HAL_SRAM_Write_16b(&hsram1, (uint32_t *)(SRAM_BANK_ADDR + WRITE_READ_ADDR), aTxBuffer, BUFFER_SIZE))
{
printf ("\n\r SRAM Write OK \n\r");
}
/* Read back data from the SRAM memory */
if( HAL_OK==HAL_SRAM_Read_16b(&hsram1, (uint32_t *)(SRAM_BANK_ADDR + WRITE_READ_ADDR), aRxBuffer, 0X40))
{
printf ("\n\r SRAM Read OK \n\r");
}
/*##-3- Checking data integrity ############################################*/
uwWriteReadStatus = Buffercmp(aTxBuffer, aRxBuffer, BUFFER_SIZE);
if(uwWriteReadStatus) /* ERR */
{
/* Turn on LED2 */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
printf ("err\n\r");
}
else /* OK */
{
/* Turn on LED1 */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, GPIO_PIN_SET);
printf ("OK\n\r");
}
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
/**Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 12;
RCC_OscInitStruct.PLL.PLLN = 216;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Activate the Over-Drive mode
*/
if (HAL_PWREx_EnableOverDrive() != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_UART4;
PeriphClkInitStruct.Uart4ClockSelection = RCC_UART4CLKSOURCE_HSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USER CODE BEGIN 4 */
#ifdef __GNUC__
/* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
/**
* @brief Retargets the C library printf function to the USART.
* @param None
* @retval None
*/
PUTCHAR_PROTOTYPE
{
/* Place your implementation of fputc here */
/* e.g. write a character to the EVAL_COM1 and Loop until the end of transmission */
HAL_UART_Transmit(&huart4, (uint8_t *)&ch, 1, 0xFFFF);
return ch;
}
/**
* @brief Fills buffer with user predefined data.
* @param pBuffer: pointer on the buffer to fill
* @param uwBufferLength: size of the buffer to fill
* @param uwOffset: first value to fill on the buffer
* @retval None
*/
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset)
{
uint32_t tmpindex = 0;
/* Put in global buffer different values */
for (tmpindex = 0; tmpindex < uwBufferLength; tmpindex++ )
{
pBuffer[tmpindex] = tmpindex + uwOffset;
}
}
/**
* @brief Compares two buffers.
* @param pBuffer1, pBuffer2: buffers to be compared.
* @param BufferLength: buffer's length
* @retval 1: pBuffer identical to pBuffer1
* 0: pBuffer differs from pBuffer1
*/
static uint8_t Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength)
{
while (BufferLength--)
{
if (*pBuffer1 != *pBuffer2)
{
return 1;
}
pBuffer1++;
pBuffer2++;
}
return 0;
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void _Error_Handler(char * file, int line)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
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
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
admin
赞同来自:
堆叠代码没有任何意义,自己查内存,一步步找
edisondeng
赞同来自:
请问下载区的文件在哪里？
秀起来
赞同来自:
时钟怎么设置啊