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instruction timing

Posted on December 27, 2011 at 08:50I'm debugging on an Olimex STM32-P103.  I think I have the PLL set up at 8 times the 8Mhz crystal. If so, then instruction timing is pretty poor.  Here's my loop:ldr r0, =portcldr r0, [r0]mov r1, #0x80mov r2, #0lo...

smead by • Associate II
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J-Link suport to STM32F4xx

Posted on December 29, 2011 at 09:10I downloaded the IAR EWMARM V6.30 which support STM32F4 series. But my IAR J-link doesn't support this cpu and I can't download and debug the code. Anyone can tell if I need to update the J-link and how? Thanks!

jacy by • Associate
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breakpoint error in STM32F1xx?

Posted on December 29, 2011 at 12:39 Thu Dec 29, 2011 20:24:59: Failed to set breakpoint at 0x60049DC0 (out of breakpoints?) When running the program from external nor flash. Why Do not set a breakpoint? Any ideas? I'm using IAR compiler V6.21 and...

gforest by • Associate
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Temperature sensor on ADC2

Posted on December 27, 2011 at 17:34Hi everybody. I've just a little question : does anyone knows if the internal temperature sensor of an STM32F107 can be read with ADC2. In the reference manual it's written ''The temperature sensor is internally c...

camille by • Associate II
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TIM1 configuration and it's behavior

Posted on December 28, 2011 at 02:30Hi, first of all sorry for my english but I hope you will understand me.Here is a TIM1 configuration form DSO nano project. I've rewrited it to more readable format:TIM1->PSC = 30;TIM1->ARR = 35;TIM1->CCR1 = (35+1...

pawelcit by • Associate
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Anyone know what the SDIOIT bit means?

Posted on December 28, 2011 at 01:25In the STM32F2xx / 4xx SDIO peripheral there's a bit in the status register SDIO_STA called SDIOIT. The description says it's a dynamic bit meaning ''SDIO interrupt received''. Does anyone know what this bit reall...

PWM mode output case

Posted on December 26, 2011 at 18:42I want to generate a signal of frequency 250 kHz with a duty cycle of 50%. after 100 cycle the output has to be low continuously until next fifty cycle and again the trend is to be continued. Can anyone suggest me...

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