Posted on August 30, 2017 at 13:05 I recently noticed a strange case on STM32F7 I measure the execution time of this function by clock cycles. which is just a simple while loop. void LK_ADDr(float *im, float *meanParameter, int Size ) { ...

Posted on August 28, 2017 at 15:12ARMv7M has provided a tracing unit for debugging: The Data Watchpoint and Trace unit. but it has only 8bit counter for such as CPICNT. how do you use it to count a piece of code?#stm32f7 #dwt #dwt->cyccnt #stm32f7-d...

Posted on August 23, 2017 at 00:22I'm using NUCLEO-L053R8  for USART communication. below is the configuration of usart2, which connects to the st-link as a COM to PC.static void MX_USART2_UART_Init(void){huart2.Instance = USART2; huart2.Init.BaudRa...

Posted on August 22, 2017 at 12:25The device is STM32F746NG-DISCO, and I measure the execution time of single instruction by this ways:int a=0; int b=255;while(b--) { a++; }make breakpoint and watch the value of States. And by this, I found that for...

Posted on August 18, 2017 at 18:30I know in some RAM components, there is many blocks in it and the more the memory usage is required, the more blocks it open for the algorithm. So that the power consumption is also increased.So for ARM-Cortex M chi...