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reading processor VRefInt voltage

Posted on October 22, 2012 at 11:39I want to measure ADCx_IN17 (internally connected to processor VRefInt). What sample time should I use ?

wadi by • Associate II
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UART4 Interrupt

Posted on October 22, 2012 at 03:45Hello, I am working on STM32F4Discovery Board. I am trying to make the UART4 connection with interrupt. I have declared all the needed settings but not able to find the problem. The problem is that it doesn't go t...

Programming,

Posted on October 21, 2012 at 19:43I have a problem with programming a Stm32f0Discovery board,When i have a code built and the board connected with STM32 ST-LINK Utility, and i click program it says: No Stlink detected.What am i doing wrong,

High Speed IO?? Is it really true?

Posted on October 22, 2012 at 13:20Hi all,I bougth a STM32F2 evulation board and iam trying to use high speed IO's but i didnt succes. here is the code;RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF, ENABLE);  /* Configure PG6 and PG8 in output pushpul...

himmet by • Associate
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STM32 RC5 STOP MODE ???

Posted on August 06, 2011 at 02:56I want to use low power mode (STOP). i put two configurations here... In the first configuration i am putting 2 STOP mode but first runs... When i wait the same external interrupt despite i enable this, i cant run b...

irmakci by • Associate II
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  • 3 replies
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Circular DMA does not circle for ADC (STM32L1xx)

Posted on October 19, 2012 at 17:49I'm trying to use the ADC on an STM32L1xx to read a single channel with a sample rate based on TIM2.  I plan to use a double-buffering scheme, so I want to set it up to DMA into a buffer with half-complete and full...

stmburns by • Associate II
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  • 4 replies
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1 external RAM shared between 2 separate FSMCs

Posted on October 16, 2012 at 17:14Hi all, I'd like to make 2 STM32F407 share 1 external RAM as a common memory. Chip #1 would store some data in RAM for chip #2, then stop all accesses and signal to #2 that there is some data for him. Chip #2 would...

dmakhrov9 by • Associate II
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Simultaneous DMAs: Poor docs or restrictive hardware?

Posted on October 19, 2012 at 18:51The STM32L1xx reference manual has this text in the DMA section: The 7 requests from the peripherals (TIMx[2,3,4,6,7], ADC1, SPI[1,2], I2Cx[1,2], USARTx[1,2,3]) and DAC Channelx[1,2] are simply logically ORed...

stmburns by • Associate II
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sysTick stops after a few TIM3 interrupts

Posted on October 19, 2012 at 16:47Hello, I am having problems with the syStick timer.  The handler for sysTick stops being called after one or two interrupts from TIM3 (set < 1Hz). The TIM3 interrupt has no problem (LED keeps toggling). I started ...

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