FPU problem

When I enable FPU in compiler option,My equation result is wrong. 0 + 0 = 0 but I see -107374176 ! (byte view: 0xCCCCCCCC) Code: typedef struct { uint16_t year; uint8_t tA; uint8_t tB; uint8_t...
Hard fault at misaligned memcpy memset

we made some simple tests with STM32F100 Value Line Eval Board: //------------------------------------------------------------------------------ // Variables static unsigned char sDstBuf[1024...
M4F FPU auto-stacking

I'm debugging Freescale K60(Cortex-M4F). Before main() FPU(Floating-point uint) is enabled, while the hardware function of "FPU registers auto-stacking on exception entry" is disabled. The source code...
FPU usage on MCBSTM32F400 with uVision

Dear sir or madam, Due to a project using your STM32F407 microcontroller I’ve recently purchased the evaluation board MCBSTM32F400 and downloaded the MDK-ARM lite IDE uVision 4.70.0.0. So far...
Defect insice ARM compiler intrinsic memset function

I have found severe defect inside ARM cor Cortex-M3 compiler. It occurs only in release build. And this is compilation result. Only 8 bytes is cleared, by using STR. 0x00013F06 F88D5008 STRB...