Cortex-M0+ privileged/unprivileged extensions

Hi all, According with ARMv6-M architecture reference manual, it supports two operation modes, handler mode and thread mode. - "execution in handler mode is always privileged." - "execution in...
Cortex-M0+ privileged/unprivileged extensions

Hi all, According with ARMv6-M architecture reference manual, it supports two operation modes, handler mode and thread mode. - "execution in handler mode is always privileged." - "execution in...
RTX. Run threads in unprivileged mode, switch to privileged mode when needed

How to run RTX threads in unprivileged mode, yet access privileged resources (e.g. SCB) when needed. Uses user-defined SVC calls. In our example, the idler thread wants to put the CPU into low-power...
RTX. Run threads in unprivileged mode, switch to privileged mode when needed

How to run RTX threads in unprivileged mode, yet access privileged resources (e.g. SCB) when needed. Uses user-defined SVC calls. In our example, the idler thread wants to put the CPU into low-power...
Differences between Privilege Modes and Non-Privilege Mode ?

Hi everyone , I'm currently using a Cortex-A9 processor (NXP Freescale i.MX6S). My project is to develop a simple OS, but I met a problem: When I am trying to control some peripherals (such as...