STM32 MCUs Products

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STM32F429 SPI Issue

Posted on June 04, 2015 at 06:39Just got a STM32F429 Discovery board and am seeing something weird when implementing an SPI driver in master mode. I'm writing the SPI driver code from scratch and am not using a peripheral library.The SPI peripheral ...

jerry2 by Senior
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  • 3 replies
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Overclocking

Posted on June 04, 2015 at 09:39I'm using a stm32f303 which has a max clock speed of 72MHz. It would be very convenient for me to set it to 73.728MHz.  It works on my board, but what effect does a few percent overclocking have on the MCU? How is rel...

gbigden by Associate III
  • 2382 Views
  • 5 replies
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STM32F030 Internal Oscillator Accuracy

Posted on June 04, 2015 at 20:28I can't find the internal oscillator accuracy anywhere in the datasheet or the reference manual. If I have the sysclk set at 48MHz from the internal osc. what are the limits of what that sysclk may actually be? #da...

daniel2 by Associate II
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  • 5 replies
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Analog input pin for Discovery board

Posted on June 04, 2015 at 22:00I'm trying to get an ADC input to work on the Discovery STM32L053 board. The VREF calibration value is 0x68D, reading channel 17 shows 0x5E9, which by my calculations makes VDD 3.325 volts, which matches what I read o...

lee23 by Associate II
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  • 2 replies
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Flash Code Protection

Posted on May 29, 2015 at 02:55Hi,I am developing codes on STM32L0 microcontrollerI want to add flash read out protection function in the code.After I enable the PcROP(proprietary Code Read Out Protection), my codes do not work anymore. It does not ...

tianchen by Associate II
  • 1743 Views
  • 4 replies
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HAL Driver on STM32F051 and STM32L051 differences?

Posted on June 03, 2015 at 05:14 Must say the CubeMX generation tool is very good, and it really does make everything simpler. However, I run into a situation where I am using the STM32L051 and STM32F051 to test on a project connecting to the bl...

andy2 by Associate II
  • 463 Views
  • 1 replies
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STM32F103 ADC internal band-gap (internal V-ref)

Posted on June 03, 2015 at 19:20Hi,For a project I need to use internal band gap (V-Ref). so i want to know how to: 1- turn-on internal band-gap voltage reference 2- select internal band-gap voltage as referencetanx all #adc #stm32f103 #v-ref

tux by Associate II
  • 469 Views
  • 1 replies
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STM32f407 HardFault

Posted on June 04, 2015 at 00:35Can somebody explain me how to find cause of hardfault? I try to use solution from http://blog.frankvh.com/2011/12/07/cortex-m3-m4-hard-fault-handler/but buffer is empty.Here are core registers dump (from keil UI):SP ...