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''Select first the target'' error

Posted on May 19, 2018 at 09:50..\stm32f4 library\CMSIS\Device\ST\STM32F4xx\Include\stm32f4xx.h(122): error:  #35: #error directive: 'Please select first the target STM32F4xx device used in your application (in stm32f4xx.h file)'plezse give me the s...

GPIO timing issue in Timer ISR

Posted on May 18, 2018 at 12:11Hello ,I am toggling a gpio inside the timer ISR . the timer ISR triggers for every 1 sec. Actually i am not able to see perfect 1 sec of gpio toggling . it also differs at different AHB frequency . i have included 2 c...

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RN by Senior
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  • 8 replies
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Resolved! STM32 MIPI checksums

Posted on May 19, 2018 at 16:21So, I am using STM32F769xxx to run MIPI-DSI display. On the display's datasheet there are power on and off sequences. I am able to get display on and off (so commands are at least somewhat OK), but colors and data on l...

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VREF+ in STM32L1xx

Posted on May 18, 2018 at 00:53Dear all,I have question regarding the VREF+ please.  My understanding is that in STM32L we only have one VREFINT which is about 1.2xx Volts and this is not a reference Voltage to the ADC.  It is directly connected to ...

mmsya by Associate II
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  • 11 replies
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Left and Right alignment in DOR (DAC STM32F103RB)

Posted on May 18, 2018 at 22:27What is the purpose of Left and Right Alignment of data in DAC?Secondly, In DAC_DHR12L1 do we need to manually shift the bits to the left to get them to right place or does it happen automatically?#dac #stm32f103rb

Some registers are not written in debug!

Posted on May 18, 2018 at 15:32Hi everyone,I'm not using CUBEMX or HAL drivers, i'm programming manually on stm32f746g disco board. When i build and debug, some registers are configured but some are not configured. If i restart the debug without ext...

N ORhan by Associate III
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  • 2 replies
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STM32F407VG + 4 bit SDIO + DMA does not work probably

Posted on April 27, 2018 at 19:33 Hi, I am using the STM32F407VG and try to read an SD Card over SDIO in 4 bit mode. I have downloaded the fatfs driver from this site: https://community.st.com/external-link.jspa?url=http%3A%2F%2Fstm32f4-...

JulianH by Associate II
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  • 3 replies
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STM32L0 + ADC + DMA

Posted on May 18, 2018 at 16:55Hi to all,I want to write some code (using HAL) to make ADC conversions of multiple channels using DMA on a STM32L073 MCU; Here some settings that the MCU will have: every group conversion is triggered by a TRGO event...