STM32H7 MPU配置 MPU_REGION_FULL_ACCESS stm32f103c8t6 mpu6050,目前市面上见的较多的STM32单片机一般都是开发板,由于这些开发板又很丰富的例程,因此使用起来非常方便,但是我们实际在应用的时候,有时候可能用不了那么多的管脚,因此会造成管脚资源的浪费,而且管脚多
MPU在执行其功能时,是以所谓的“region区域”为单位的。一个region其实就是一段连续的地址,只是它们的位置和范围都要满足一些限制(对齐方式,最小容量等)。 CM3的MPU共支持8个regions,还允许把每个region进一步划分成更小的“子region”。此外,还允许启用一个“背景region”(即没有MPU时的全部地址空间),不过它是只...
首先可以将代码区分为运行于特权级别的代码(关键函数),和运行于用户级别的代码(普通应用) 设置不同的MPU region及其访问权限,使得OTP所在的region只能被运行在特权级别的代码读取 2 使用MPU实现访问控制的思路 3 构建示例程序——通过MPU实现访问控制 代码结构变化 Main函数 调用MPU配置函数,进入应用程序前降级到用户模...
MPU中如果region0,region2和region5三个区域有交叠,则交叠区域的访问权限由哪个region来决定A.region0B.region2C.region
MPU region read operations retrieve the current values for the attributes of a region. Each MPU region read operation consists of the following actions: Execute awrctlinstruction to thempubaseregister with thempubase.INDEXandmpubase.Dfields set to identify the MPU region. ...
Provides an efficient method for aligned heap allocations based upon spare space management, provides an efficient method for MPU region allocations based upon aligned subregion allocations, and provides integrated block pools for small data blocks with heap backup if size or alignment requirements ...
When not using CONFIG_XIP (CONFIG_XIP=n) the FLASH_0 mpu region needs to be removed, otherwise it will have the default base address = 0, which means that MPU will try to configure the region with ...
1. Set "MPU disabled" in "System Control Register". 2. Set the following registers. "MPU Region Base Address Registers" "MPU Region Size and Enable Registers" "MPU Region Access Control Registers" 3. Set "MPU enabled" in "System Control Register". ...
Region2 is Region2 but it is also region0. <<So, how can i know that which AccessRightConfig will be applied? (AccessRightConfig 0 or 2)>> <<>> : is my main question. So I tested changing memProtect1_AccessRightConfig0. and the mpu didn't work. [when i pushed the button, Ha...
The MPU region read operation retrieves mpubase.BASE, mpuacc.MASK or mpuacc.LIMIT, mpuacc.C, and mpuacc.PERM values for the MPU region." --- Quote End --- However, when running this sequence even immediately after a write region sequence, the mpubase.BASE f...