STM32 MCUs products

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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...


Resolved! SDIO/EMMC version of STM32 versus EMMC IC version

Hi I want to use an EMMC( INSIGNIS NSEC53K) with STM32F405 SDIO interface. STM32F405 manual says: "Full compliance wit MhultiMediaCard System Specification Version 4.2."the EMMCwe have chosen: INSIGNIS NSEC53K. Its datasheet says:"Compliant with eMMC...

MK..1 by Associate III
  • 3 replies
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How to send 10-bit message using HAL_SPI_TRANSMIT

I am trying to interface with an AD8400 single channel digital potentiometer. It communicates over SPI and requires 2 address bits and 8 data bits to set its resistance. I am having trouble figuring out how to send a 10-bit message.I have set the dat...

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PMalh.1 by Associate II
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ADC reading on STM32H7B0 CPUs

Hi!I am having problems reading accurate values using the STM32H7B0 CPU. I have identical boards with STM32H7A3 and STM32H7B0 CPUs and the results from the B0 boards are off by a lot. I have also tried to run the ADC in 12 vs 16 bit mode and the scal...

Resolved! How to Trigger DMA from a TIM with HAL

Hi,I am trying to have a DMA move one unit of data every time the timer finishes it's counting period. The DMA would be circular so it would continually do this. I am going to be moving from a buffer to the CCR register of a pwm output. I saw a HA...

FKopp.1 by Associate II
  • 2 replies
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Resolved! Which LSE Crystal to use on Discovery Board

I have an STM32L100C-DISCO board (MB110B Rev. B) and I want to install the LSE crystal, which is not populated by default. I consulted the schematic in the UM1656 "user manual for the 32L100CDISCOVERY discovery kit". Crystal X3 has a part number of...

LHuxl.1 by Associate II
  • 8 replies
  • 1 kudos

STM32H7 CPU runs too slowly occasionally

test code as below:#include <rtthread.h> #include <rthw.h>   #define CPU_USAGE_CALC_TICK 100 #define CPU_USAGE_LOOP 100   static rt_uint8_t cpu_usage_major = 0, cpu_usage_minor= 0; static rt_uint32_t total_count = 0; static rt_uint32_t _c...

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zhuij.1 by Associate II
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Possible DMA reading problem from ADCx_CDR

Dear All,I am trying to develop a code for STM32H742VGT revision V. ADC1 and ADC2 work in regular simultaneous mode and they are set to convert 6 channels. All the settings are exactly same to have same sampling and conversion time. Of course, ADC1 a...

TA1 by Associate III
  • 0 replies
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