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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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STM32F10x Code execute in external nor flash?

Posted on December 29, 2011 at 04:33In STM32F10x NOR_CodeExecute Project. whenan interrupt occursinthe externalNOR Flash Code Area,  The interrupt is handled by Internal Flash Code. I don.t know why.

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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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...

STM32F4x7 MAC problems

Posted on December 22, 2011 at 07:09Hello, I am working on initializing the Ethernet/MAC code on the STM32F4 Discovery, with the STM32F407VG processor.  I have used the example code found on ST's website here: http://www.st.com/internet/mcu/product/...

chebuzz by • Associate
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FSMC in synchronous/burst mode

Posted on December 27, 2011 at 10:39Hello, I would like to configure the STM32F2 FSMC in synchronous/burst mode, but all the examples provided by ST are using asynchronous.  The Reference manual is also unclear which configuration should be used. Do...

anhhuy by • Associate
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