Hi everybody,
I need an help on using uClinux on stm32f103. The problem is I
need to develop an application which makes to communicate
microcontroller and PC via USB. So I made an application that I want to
run from uClinux shell. To configure usb protocol, I need to change
priority group and access to SCB -> AIRCR register (0xE000
0000 of Cortex-M3 internal peripherals memory). Moreover NVIC register
are also located into Cortex-M3
internal peripherals memory. The problem is that when I launch my
application from shell, I got a segmentation fault when the operating
system runs the part related to "USB_interrupt_configuration". I think
I don't have appropriate privilege to access to those registers. In
fact when I run the function "__get_control()" included in "core_cm3.c"
file, I got the value "0x0000003". Am I wrong? So what can I do to have
complete access to stm32f103 registers when i develop an application
that I want to run under uClinux operating system? Thanks in advance to
all people who will help me to solve the problem.
Best regards
Neo.
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