We have in the core_xxx.h files the inline function __STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) that can be used to insert interrupt handlers into the vector table.
However, the interrupt handlers are normally of the type void handler(void) and, when calling the function __NVIC_SetVector(<some vector>, handler) GCC will produce the error '__NVIC_SetVector' makes integer from pointer without a cast. It would be better if the vector parameter from __NVIC_SetVector would be declared as type void*, and put the cast to uint32_t inside the assignment. In this way, any function addresses can be passed, without having to explicitly insert a cast, like so:
__STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, void* vector)
{
uint32_t *vectors = (uint32_t *) ((uintptr_t) SCB->VTOR);
vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET] = (uint32_t)vector;
/* ARM Application Note 321 states that the M4 does not require the architectural barrier */
}
for example, as of now, one has to write __NVIC_SetVector(EXTI4_IRQn, (uint32_t)handler); to use this function (note that there is a cast to uint32_t). With this change, the code __NVIC_SetVector(EXTI4_IRQn, handler); is valid and compiles without errors, and is more clear.
We have in the
core_xxx.hfiles the inline function__STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)that can be used to insert interrupt handlers into the vector table.However, the interrupt handlers are normally of the type
void handler(void)and, when calling the function__NVIC_SetVector(<some vector>, handler)GCC will produce the error'__NVIC_SetVector' makes integer from pointer without a cast. It would be better if thevectorparameter from__NVIC_SetVectorwould be declared as typevoid*, and put the cast touint32_tinside the assignment. In this way, any function addresses can be passed, without having to explicitly insert a cast, like so:for example, as of now, one has to write
__NVIC_SetVector(EXTI4_IRQn, (uint32_t)handler);to use this function (note that there is a cast touint32_t). With this change, the code__NVIC_SetVector(EXTI4_IRQn, handler);is valid and compiles without errors, and is more clear.