os_error_t
os_arch_os_init(void)
{
os_error_t err;
int i;
/* Cannot be called within an ISR */
err = OS_ERR_IN_ISR;
if (__get_IPSR() == 0) {
err = OS_OK;
/* Drop priority for all interrupts */
for (i = 0; i < sizeof(NVIC->IP); i++) {
NVIC->IP[i] = 0xff;
}
/*
* Install default interrupt handler, which'll print out system
* state at the time of the interrupt, and few other regs which
* should help in trying to figure out what went wrong.
*/
NVIC_SetVector(-13, (uint32_t)os_default_irq_asm); /* Hardfault */
NVIC_SetVector(MemoryManagement_IRQn, (uint32_t)os_default_irq_asm);
NVIC_SetVector(BusFault_IRQn, (uint32_t)os_default_irq_asm);
NVIC_SetVector(UsageFault_IRQn, (uint32_t)os_default_irq_asm);
for (i = 0; i < NVIC_NUM_VECTORS - NVIC_USER_IRQ_OFFSET; i++) {
NVIC_SetVector(i, (uint32_t)os_default_irq_asm);
}
/* Call bsp related OS initializations */
os_bsp_init();
/* Set the PendSV interrupt exception priority to the lowest priority */
NVIC_SetPriority(PendSV_IRQn, PEND_SV_PRIO);
/* Set the SVC interrupt to priority 0 (highest configurable) */
NVIC_SetPriority(SVCall_IRQn, SVC_PRIO);
/*
* Set the os environment. This will set stack pointers and, based
* on the contents of os_flags, will determine if the tasks run in
* priviliged or un-privileged mode.
*/
os_set_env();
/* Check if privileged or not */
if ((__get_CONTROL() & 1) == 0) {
os_arch_init();
} else {
svc_os_arch_init();
}
}
return err;
}
os_error_t
os_arch_os_init(void)
{
os_error_t err;
int i;
/* Cannot be called within an ISR */
err = OS_ERR_IN_ISR;
if (__get_IPSR() == 0) {
err = OS_OK;
/* Drop priority for all interrupts */
for (i = 0; i < sizeof(NVIC->IP); i++) {
NVIC->IP[i] = -1;
}
NVIC_SetVector(SVCall_IRQn, (uint32_t)SVC_Handler);
NVIC_SetVector(PendSV_IRQn, (uint32_t)PendSV_Handler);
NVIC_SetVector(SysTick_IRQn, (uint32_t)SysTick_Handler);
/*
* Install default interrupt handler, which'll print out system
* state at the time of the interrupt, and few other regs which
* should help in trying to figure out what went wrong.
*/
NVIC_SetVector(NonMaskableInt_IRQn, (uint32_t)os_default_irq_asm);
NVIC_SetVector(HardFault_IRQn, (uint32_t)os_default_irq_asm);
NVIC_SetVector(-13, (uint32_t)os_default_irq_asm); /* Hardfault */
for (i = 0; i < NVIC_NUM_VECTORS - NVIC_USER_IRQ_OFFSET; i++) {
NVIC_SetVector(i, (uint32_t)os_default_irq_asm);
}
/* Set the PendSV interrupt exception priority to the lowest priority */
NVIC_SetPriority(PendSV_IRQn, PEND_SV_PRIO);
/* Set the SVC interrupt to priority 0 (highest configurable) */
NVIC_SetPriority(SVCall_IRQn, SVC_PRIO);
/* Check if privileged or not */
if ((__get_CONTROL() & 1) == 0) {
os_arch_init();
} else {
svc_os_arch_init();
}
}
return err;
}
os_error_t
os_arch_os_init(void)
{
os_error_t err;
/* Cannot be called within an ISR */
err = OS_ERR_IN_ISR;
if (__get_IPSR() == 0) {
err = OS_OK;
/* Call bsp related OS initializations */
os_bsp_init();
/* Set the PendSV interrupt exception priority to the lowest priority */
NVIC_SetPriority(PendSV_IRQn, PEND_SV_PRIO);
/* Set the SVC interrupt to priority 0 (highest configurable) */
NVIC_SetPriority(SVCall_IRQn, SVC_PRIO);
/*
* Set the os environment. This will set stack pointers and, based
* on the contents of os_flags, will determine if the tasks run in
* priviliged or un-privileged mode.
*/
os_set_env();
/* Check if priviliged or not */
if ((__get_CONTROL() & 1) == 0) {
os_arch_init();
} else {
svc_os_arch_init();
}
}
return err;
}