Resolved! How to move ISRs to ITCM RAM
Hello,I try to run an ISR (void TIM3_IRQHandler(void)) in the ITCM RAM area. I'm new with scatter-files. Anybody has an example?(NUCLEO-H743ZI, Keil uVision)RegardsJakob
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STM32L433CCT6: VBAT current anomaly
I'm still having problems with VBAT current consumption. I've loaded my firmware and the processor behaves correctly in all other respects. I removed all components from the processor to insure that there are no sneak paths for parasitic current dra...
Blue pill: What is my sampling frequency ?
Hello,My adc clock is 140.625 KHzMy sample time is 239.5 CyclesSo my Conversion time = 239.5 Cycles + 12.5 Cycles = 251.5 Cycles.1 Cycle = 1/Adc Clock 1/140.625 KHz = 7.1uSSo total conversion time = 251.5 * 7.1uS = 1.78msi.e my sampling frequency = ...
Odd Benchmark Results Using Different gcc Optimizations
I've written a benchmark test to compare the CPU execution time for float adds versus int32_t adds. The results were surprising. The benchmark is very simple, a loop of 100 million is created and timed so that it's value can be subtracted from othe...
STM32F103 Blue pill - Multichannel ADC in Scan mode reads wrong values
Hello,My objective is:Read voltage in 10 channels of Blue pill using Scan and Poll conversion mode.Problem I face is:Wrong values are read. When I feed 3.3v to the adc input (any input), its adjascent channel reads 3.3v, but that too changes to 2v. ...
Waveshare epaper displays
I have purchased through Amazon 2 epaper displays from Wisebatt1.54 inch bi-color (black/white/red) 2.13 inch mono color display with HAT interface boardFor the first one, the black was ok but the red was shrunk to 1/4th top left quadrant of the disp...
Calculating a pulse period ?
Dear Members,How can I count a pulse from a sensor with timer ?How can I calculate the period of this pulse ? samplebuff[i].ired = buffer_rx[ j ]; samplebuff[i].ired <<= 8U; samplebuff[i].ired |= buffer_rx[ j + 1 ];betweensamp...
I am using the ADC on NUCLEO- STM32F401RE board. ADC is programmed using interrupts and the code does not work beyond 10kHz of input signal. What am I missing?
#include "main.h" #include "stm32f4xx_hal.h" /* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc1; /* Private function prototypes -----------------------------------------------*/ void SystemClo...
