ST STM32F4 Series User Manual

PM0214 Rev 9 259/262
PM0214 Core peripherals
261
sp = sp + 0x60;
}
else if(lr == 0xFFFFFFED)
{
sp = __get_PSP() + 0x60 ;
}
fpscr_val = *(uint32_t*)sp;
{ check exception flags }
fpscr_val &= (uint32_t)~0x8F ; // Clear all exception flags
*(uint32_t*)sp = fpscr_val;
__DMB() ;
}
// FPU IRQ Handler
void __asm FPU_IRQHandler(void)
{
IMPORT FPU_ExceptionHandler
MOV R0, LR // move LR to R0
MOV R1, SP // Save SP to R1 to avoid any modification to
// the stack pointer from FPU_ExceptionHandler
VMRS R2, FPSCR // dummy read access, to force clear
B FPU_ExceptionHandler
BX LR
}

ST STM32F4 Series Specifications

General

Brand	ST
Model	STM32F4 Series
Category	Computer Hardware
Language	English