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Forum Posts

DMA events from TIM1 - One Stream with 3 channels?

I've been reading the STM32F427 and I can't confirm my understanding - so I'd like to ask.I have data that I must push out a GPIO faster then should be serviced by an interrupt.My intent is to use TIM1 - set a period - then set 3 output compares havi...

Joe.H by Senior
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  • 4 replies
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Does a bare STM32 ARM Microcontroller come with a bootloader?

Hi guys, I am planning to buy a bare STM32 ARM Microcontroller and wanted to know wether it comes with a boot loader so that I can directly upload code using Keil u vision, STM32 Cube MX and a ST link V2. If there is no boot loader shipped with the u...

Sashvat by Associate II
  • 1390 Views
  • 3 replies
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How to organize the SPI transmit buffer?

Dear experts, can you please give a suggestion about how to proceed with the following problem?I am trying to display the information on the PCD8544-driven LCD (aka Nokia 5110) about the incoming UART messages.I am using STM32CubeMX to configure the ...

EOvch by Associate
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  • 0 replies
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Resolved! SPI RX buffer shifted

Posted on February 23, 2018 at 18:10Dear All,I use SPI as a master with 2 lines full duplex with DMA on STM32F303RE with 8-bit data size.Frames are made of variable number of Bytes. Normally SPI clocks out 3 Bytes of command on MOSI line + 4 Bytes o...

sirpak by Associate II
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  • 11 replies
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ADCs in Dual (Multi) Mode in F446

Hello AllI have configured ADC1 and ADC2, each with CONT=1 and L = 0, to convert two respective analog inputs on a software start, and the scheme works fine. However, when in the CCR I set the MULTI bits to 0b00110 (or to anything else for that matte...

Amir1 by Associate II
  • 374 Views
  • 0 replies
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STM32L100 RTC

Hello!In my design, I want to use the STM32L100 series microcontroller. How can I get a clock frequency RTC of 1 Hz if I use a highly stable external oscillator with a frequency of 30 MHz to clock the microcontroller.PREDIV_A can be 1,2,3, ..., or 12...

EChum by Associate
  • 515 Views
  • 2 replies
  • 0 kudos