
rm0455-stm32h7a37b3-and-stm32h7b0-value-line-advanced-armbased-32bit-mcus-stmicroelectronics.pdf 对 Secure-only areas 的描述如下
These option bytes configure the size of the secure-only areas in FLASH_SCAR_CUR1/2 registers. They can be changed without any restriction by the user secure application or by the ST secure library running on the device. For user nonsecure application, the secure-only area size can be removed by performing a bank erase with protection removal (see Section 4.3.10), or an RDP level 1 to 0 regression when DMES1/2 set to 1 in either FLASH_SCAR_CUR1/2 or FLASH_SCAR_PRG1/2 (otherwise an option byte change error is raised) ST secure library 或user secure application具体指的是啥,该怎么用呢。 |
手册后面有张图表,从中可以看出来一个是 RSS,一个指的是安全区内的用户代码。![]() |
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