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Run code from ram improve the performances?

Hallo. In other mcu (not ARM) i’ve worked in the past, there were possibe to move some parts of time critical code to ram, and run them from there to get the best performance, since the flash mamory access were slower then the ram access. In STM32 mc...

Measure cable length

Hello, I would like to know if it is possible to measure the length of a really long and thin copper wire. The length ranges between 5 - 15 km. I think TDR (time domain reflectometry) would be the best method for it. My plan is to generate a pulse wi...

ppete.1 by Associate II
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STM32H7 AT24CM02 EEPROM

Hello, I am trying to integrate an AT24CM02 into my project. Can anyone suggest any libraries compatible with HAL? your help is much appreciated. Thank you and best regards, Vouria

VYoun by Associate III
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  • 4 replies
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Resolved! STM32L552 - trying to set 3 GPIO Pins as inputs(w/ wo pull-downs) to be read before most initialization, but some pins on the board are always HIGH?

I'm trying to use 3 GPIO Pins as a 3-bit ID essentially. Depending on the values read, the uC will configure itself in an appropriate way (1 bin fits all tools essentially). The problem I'm having is that with the eval board the pins are pretty close...

Rikerq by Associate II
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How to clear the DMA functions` redundancy words?

when I use the DMA functions as below:HAL_UART_Transmit_DMA(&huart1,(uint8_t *)aTxStartMessage,sizeof(aTxStartMessage));HAL_Delay(10000);In PC side,It always display such symbols at the hand of the aTxStartMessage after the first success reciever. Wh...

GShen.1 by Associate II
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  • 6 replies
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Resolved! STM32 PLL clock source doesn't work

Posted on June 18, 2017 at 09:21 Hello i have a program on the 32F030f4p6 chip for testing the system clock frequency. It blinks an LED at about 1Hz. the problem is that when i change the PLL multiplier from 2 to 12 the LED still blinks at the sa...