Posted on August 21, 2014 at 02:53As far as I knew, SYSTICK Timer is a 24-bit down counter. For now, I need to know the precise consumption time for the memcpy function. Suppose I set SysTick->RELOAD = 511, it will turn out two cases as the followin...

Posted on July 15, 2014 at 17:26DearI have read Ch16.2 Trace component DWT, the definition guide of Cortex M3 2nd. But I still confuse it. If I take the CYCCNT, the corresponding time is CYCCNT * 168 MHz * 1e9 ?Am I correct?  Thanks 

Posted on July 15, 2014 at 17:24How to convert the DWT CYCCNT to ns ?

Posted on July 15, 2014 at 16:18DearI have read Ch14.1 Systicks the definition guide of Cortex M3 2nd. But I still confuse it. If I take the Systicks Reload = 65536, the corresponding time is 65536 * 168 MHz * 1e9 ?Am I correct?  Thanks 

Posted on July 09, 2014 at 07:51For now, I need to do a simple benchmark of memcpy. Here, it's pseudocode.#define SYSTICKS_REG 0xE000E018uint32_t *get_systicks (void){    return (uint32_t *) SYSTICKS_REG;}measure_start = *get_systicks ();for (int j ...