eclipse-threadx
The interrupt vector table offset register should not be set.
/* Setup Vector Table Offset Register. */ MOV r0, #0xE000E000 // Build address of NVIC registers LDR r1, =_vectors // Pickup address of vector table STR r1, [r0, #0xD08] // Set vector table address
/* Set system stack pointer from vector value. */ LDR r0, =_tx_thread_system_stack_ptr // Build address of system stack pointer LDR r1, =_vectors // Pickup address of vector table LDR r1, [r1] // Pickup reset stack pointer STR r1, [r0] // Save system stack pointer
in ports/cortex_m7/gnu/example_build/tx_initialize_low_level.S file, the interrupt vector table offset register is set, which will cause trouble for users. The interrupt vector table is generally set before RTOS starts, such as in the startup.s file, or when performing an upgrade jump.
If the above code operation is intended to set the following variable '_tx_thread_system_stack_ptr'. It is recommended to let '_tx_thread_system_stack_ptr' be set by the user.
Also the variable '_tx_thread_system_stack_ptr' is not used to reset the interrupt stack.
My apologies for the long delay. I will flag this issue for discussion with the group of committers.
@eclipse-threadx/iot-threadx-committers and @eclipse-threadx/iot-threadx-contributors: please have a look.
not sure if this is a bug, feature, or preference my experience is VTOR set here is not a problem
We discussed this issue and agree the change should be made.
We will include it in our planning.