STM32H7的MPU支持的几个参数，方便以后直接查看配置

eric2013 · 发表于 2018-11-7 00:38:08

结构体：

#if (__MPU_PRESENT == 1)
/** @defgroup CORTEX_MPU_Region_Initialization_Structure_definition MPU Region Initialization Structure Definition
* @brief MPU Region initialization structure
* @{
*/
typedef struct
{
uint8_t Enable; /*!< Specifies the status of the region.
This parameter can be a value of @ref CORTEX_MPU_Region_Enable */
uint8_t Number; /*!< Specifies the number of the region to protect.
This parameter can be a value of @ref CORTEX_MPU_Region_Number */
uint32_t BaseAddress; /*!< Specifies the base address of the region to protect. */
uint8_t Size; /*!< Specifies the size of the region to protect.
This parameter can be a value of @ref CORTEX_MPU_Region_Size */
uint8_t SubRegionDisable; /*!< Specifies the number of the subregion protection to disable.
This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF */
uint8_t TypeExtField; /*!< Specifies the TEX field level.
This parameter can be a value of @ref CORTEX_MPU_TEX_Levels */
uint8_t AccessPermission; /*!< Specifies the region access permission type.
This parameter can be a value of @ref CORTEX_MPU_Region_Permission_Attributes */
uint8_t DisableExec; /*!< Specifies the instruction access status.
This parameter can be a value of @ref CORTEX_MPU_Instruction_Access */
uint8_t IsShareable; /*!< Specifies the shareability status of the protected region.
This parameter can be a value of @ref CORTEX_MPU_Access_Shareable */
uint8_t IsCacheable; /*!< Specifies the cacheable status of the region protected.
This parameter can be a value of @ref CORTEX_MPU_Access_Cacheable */
uint8_t IsBufferable; /*!< Specifies the bufferable status of the protected region.
This parameter can be a value of @ref CORTEX_MPU_Access_Bufferable */
}MPU_Region_InitTypeDef;
/**
* @}
*/
#endif /* __MPU_PRESENT */

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参数：

#if (__MPU_PRESENT == 1)
/** @defgroup CORTEX_MPU_HFNMI_PRIVDEF_Control MPU HFNMI and PRIVILEGED Access control
* @{
*/
#define MPU_HFNMI_PRIVDEF_NONE ((uint32_t)0x00000000)
#define MPU_HARDFAULT_NMI ((uint32_t)0x00000002)
#define MPU_PRIVILEGED_DEFAULT ((uint32_t)0x00000004)
#define MPU_HFNMI_PRIVDEF ((uint32_t)0x00000006)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Region_Enable CORTEX MPU Region Enable
* @{
*/
#define MPU_REGION_ENABLE ((uint8_t)0x01)
#define MPU_REGION_DISABLE ((uint8_t)0x00)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Instruction_Access CORTEX MPU Instruction Access
* @{
*/
#define MPU_INSTRUCTION_ACCESS_ENABLE ((uint8_t)0x00)
#define MPU_INSTRUCTION_ACCESS_DISABLE ((uint8_t)0x01)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Access_Shareable CORTEX MPU Instruction Access Shareable
* @{
*/
#define MPU_ACCESS_SHAREABLE ((uint8_t)0x01)
#define MPU_ACCESS_NOT_SHAREABLE ((uint8_t)0x00)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Access_Cacheable CORTEX MPU Instruction Access Cacheable
* @{
*/
#define MPU_ACCESS_CACHEABLE ((uint8_t)0x01)
#define MPU_ACCESS_NOT_CACHEABLE ((uint8_t)0x00)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Access_Bufferable CORTEX MPU Instruction Access Bufferable
* @{
*/
#define MPU_ACCESS_BUFFERABLE ((uint8_t)0x01)
#define MPU_ACCESS_NOT_BUFFERABLE ((uint8_t)0x00)
/**
* @}
*/
/** @defgroup CORTEX_MPU_TEX_Levels MPU TEX Levels
* @{
*/
#define MPU_TEX_LEVEL0 ((uint8_t)0x00)
#define MPU_TEX_LEVEL1 ((uint8_t)0x01)
#define MPU_TEX_LEVEL2 ((uint8_t)0x02)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Region_Size CORTEX MPU Region Size
* @{
*/
#define MPU_REGION_SIZE_32B ((uint8_t)0x04)
#define MPU_REGION_SIZE_64B ((uint8_t)0x05)
#define MPU_REGION_SIZE_128B ((uint8_t)0x06)
#define MPU_REGION_SIZE_256B ((uint8_t)0x07)
#define MPU_REGION_SIZE_512B ((uint8_t)0x08)
#define MPU_REGION_SIZE_1KB ((uint8_t)0x09)
#define MPU_REGION_SIZE_2KB ((uint8_t)0x0A)
#define MPU_REGION_SIZE_4KB ((uint8_t)0x0B)
#define MPU_REGION_SIZE_8KB ((uint8_t)0x0C)
#define MPU_REGION_SIZE_16KB ((uint8_t)0x0D)
#define MPU_REGION_SIZE_32KB ((uint8_t)0x0E)
#define MPU_REGION_SIZE_64KB ((uint8_t)0x0F)
#define MPU_REGION_SIZE_128KB ((uint8_t)0x10)
#define MPU_REGION_SIZE_256KB ((uint8_t)0x11)
#define MPU_REGION_SIZE_512KB ((uint8_t)0x12)
#define MPU_REGION_SIZE_1MB ((uint8_t)0x13)
#define MPU_REGION_SIZE_2MB ((uint8_t)0x14)
#define MPU_REGION_SIZE_4MB ((uint8_t)0x15)
#define MPU_REGION_SIZE_8MB ((uint8_t)0x16)
#define MPU_REGION_SIZE_16MB ((uint8_t)0x17)
#define MPU_REGION_SIZE_32MB ((uint8_t)0x18)
#define MPU_REGION_SIZE_64MB ((uint8_t)0x19)
#define MPU_REGION_SIZE_128MB ((uint8_t)0x1A)
#define MPU_REGION_SIZE_256MB ((uint8_t)0x1B)
#define MPU_REGION_SIZE_512MB ((uint8_t)0x1C)
#define MPU_REGION_SIZE_1GB ((uint8_t)0x1D)
#define MPU_REGION_SIZE_2GB ((uint8_t)0x1E)
#define MPU_REGION_SIZE_4GB ((uint8_t)0x1F)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Region_Permission_Attributes CORTEX MPU Region Permission Attributes
* @{
*/
#define MPU_REGION_NO_ACCESS ((uint8_t)0x00)
#define MPU_REGION_PRIV_RW ((uint8_t)0x01)
#define MPU_REGION_PRIV_RW_URO ((uint8_t)0x02)
#define MPU_REGION_FULL_ACCESS ((uint8_t)0x03)
#define MPU_REGION_PRIV_RO ((uint8_t)0x05)
#define MPU_REGION_PRIV_RO_URO ((uint8_t)0x06)
/**
* @}
*/
/** @defgroup CORTEX_MPU_Region_Number CORTEX MPU Region Number
* @{
*/
#define MPU_REGION_NUMBER0 ((uint8_t)0x00)
#define MPU_REGION_NUMBER1 ((uint8_t)0x01)
#define MPU_REGION_NUMBER2 ((uint8_t)0x02)
#define MPU_REGION_NUMBER3 ((uint8_t)0x03)
#define MPU_REGION_NUMBER4 ((uint8_t)0x04)
#define MPU_REGION_NUMBER5 ((uint8_t)0x05)
#define MPU_REGION_NUMBER6 ((uint8_t)0x06)
#define MPU_REGION_NUMBER7 ((uint8_t)0x07)
#define MPU_REGION_NUMBER8 ((uint8_t)0x08)
#define MPU_REGION_NUMBER9 ((uint8_t)0x09)
#define MPU_REGION_NUMBER10 ((uint8_t)0x0A)
#define MPU_REGION_NUMBER11 ((uint8_t)0x0B)
#define MPU_REGION_NUMBER12 ((uint8_t)0x0C)
#define MPU_REGION_NUMBER13 ((uint8_t)0x0D)
#define MPU_REGION_NUMBER14 ((uint8_t)0x0E)
#define MPU_REGION_NUMBER15 ((uint8_t)0x0F)
/**
* @}
*/
#endif /* __MPU_PRESENT */

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函数：

#if (__MPU_PRESENT == 1)
/**
* @brief Disables the MPU
* @retval None
*/
void HAL_MPU_Disable(void)
{
/* Make sure outstanding transfers are done */
__DMB();
/* Disable fault exceptions */
SCB->SHCSR &= ~SCB_SHCSR_MEMFAULTENA_Msk;
/* Disable the MPU and clear the control register*/
MPU->CTRL = 0;
}
/**
* @brief Enables the MPU
* @param MPU_Control Specifies the control mode of the MPU during hard fault,
* NMI, FAULTMASK and privileged access to the default memory
* This parameter can be one of the following values:
* @arg MPU_HFNMI_PRIVDEF_NONE
* @arg MPU_HARDFAULT_NMI
* @arg MPU_PRIVILEGED_DEFAULT
* @arg MPU_HFNMI_PRIVDEF
* @retval None
*/
void HAL_MPU_Enable(uint32_t MPU_Control)
{
/* Enable the MPU */
MPU->CTRL = MPU_Control | MPU_CTRL_ENABLE_Msk;
/* Enable fault exceptions */
SCB->SHCSR |= SCB_SHCSR_MEMFAULTENA_Msk;
/* Ensure MPU setting take effects */
__DSB();
__ISB();
}
/**
* @brief Initializes and configures the Region and the memory to be protected.
* @param MPU_Init Pointer to a MPU_Region_InitTypeDef structure that contains
* the initialization and configuration information.
* @retval None
*/
void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_Init)
{
/* Check the parameters */
assert_param(IS_MPU_REGION_NUMBER(MPU_Init->Number));
assert_param(IS_MPU_REGION_ENABLE(MPU_Init->Enable));
/* Set the Region number */
MPU->RNR = MPU_Init->Number;
if ((MPU_Init->Enable) != RESET)
{
/* Check the parameters */
assert_param(IS_MPU_INSTRUCTION_ACCESS(MPU_Init->DisableExec));
assert_param(IS_MPU_REGION_PERMISSION_ATTRIBUTE(MPU_Init->AccessPermission));
assert_param(IS_MPU_TEX_LEVEL(MPU_Init->TypeExtField));
assert_param(IS_MPU_ACCESS_SHAREABLE(MPU_Init->IsShareable));
assert_param(IS_MPU_ACCESS_CACHEABLE(MPU_Init->IsCacheable));
assert_param(IS_MPU_ACCESS_BUFFERABLE(MPU_Init->IsBufferable));
assert_param(IS_MPU_SUB_REGION_DISABLE(MPU_Init->SubRegionDisable));
assert_param(IS_MPU_REGION_SIZE(MPU_Init->Size));
MPU->RBAR = MPU_Init->BaseAddress;
MPU->RASR = ((uint32_t)MPU_Init->DisableExec << MPU_RASR_XN_Pos) |
((uint32_t)MPU_Init->AccessPermission << MPU_RASR_AP_Pos) |
((uint32_t)MPU_Init->TypeExtField << MPU_RASR_TEX_Pos) |
((uint32_t)MPU_Init->IsShareable << MPU_RASR_S_Pos) |
((uint32_t)MPU_Init->IsCacheable << MPU_RASR_C_Pos) |
((uint32_t)MPU_Init->IsBufferable << MPU_RASR_B_Pos) |
((uint32_t)MPU_Init->SubRegionDisable << MPU_RASR_SRD_Pos) |
((uint32_t)MPU_Init->Size << MPU_RASR_SIZE_Pos) |
((uint32_t)MPU_Init->Enable << MPU_RASR_ENABLE_Pos);
}
else
{
MPU->RBAR = 0x00;
MPU->RASR = 0x00;
}
}
#endif /* __MPU_PRESENT */

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配置举例：

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 through */
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_NOT_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_LEVEL0;
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);
}

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2131822407 · 发表于 2024-6-2 14:58:22

stmcubeMX自动生成这个MPU代码，下进去之后就再也下载不进去了，这个要怎么办

eric2013 · 发表于 2024-6-3 08:54:06

2131822407 发表于 2024-6-2 14:58
stmcubeMX自动生成这个MPU代码，下进去之后就再也下载不进去了，这个要怎么办

使用STM32CubeProg的串口ISP或者USB DFU下载试试。

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[MPU] STM32H7的MPU支持的几个参数，方便以后直接查看配置

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