About km shim

km shim · 2018-10-21

ex) When compiled with IAR 8.30.1, HardFault exception was occured.float gfSetDataRate = 100.0f; printf("Data Rate = %f \r\n", gfSetDataRate);HardFault is occured at VCVT.F64.F32 instruction.I also tested following caseIn case Compiled with GCC, is...

km shim · 2018-04-03

Posted on April 03, 2018 at 12:111. Target board: STM32F407G-DISC1(MB997D)2. Timer 1 and 4 configuration3. Probing PE9 for OPM of TIM1why 1st pwm is not working?Is it impossible to use timer by this manner?

km shim · 2018-10-22

AvaTar,Thank you very much.

km shim · 2018-10-22

I found the hints on Keil site(http://www.keil.com/support/man/docs/armasm/armasm_dom1361289950613.htm).They says that VCVT instruction can produce invalid operation, ....and also I found that vcvt.f64.f32 never used in the gcc asm code. so, suspect...

km shim · 2018-10-22

Yes,Target, and library configuration. and also, debug info picture as following.FPU enabled routine. at that time FPU coprocessor info.

km shim · 2018-10-22

No, still not working.Yes, I think that 4 Kbytes is enough for stack in my application.And, as attached picture, exception is occurred at execution of FPU instruction, vcvt.f64.f32,I thought that this may be related with lazy stack. so, now reviews t...

km shim · 2018-10-21

Thanks,I have already checked stack size up to 32kbytes and also fpu enabled function.thank you very much.

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Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1

OPM mode of Tim1 triggered by TIM4 is working strangely.

Re: Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1

Re: Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1

Re: Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1

Re: Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1

Re: Why is printf not working with floating point on the STM32F407VG, IAR 8.30.1