function code for delay us & ms without using timer?

[parth kothiya]

i want implement us delay Delay_us(uint32_t time) function in my application without using timer Hal_Delay() function minimum delay 1ms how can i generate us delay?

[Tesla DeLorean · Accepted solution]

You can use a TIM->CNT register clocking at a high rate to observe time pass

The cores, except CM0, have a 32-bit DWT CYCCNT register clocking at core frequency, which has a resolution of several nano-seconds, and can be used for sub-microsecond accuracy.

Search the forum, this topic has been gone over repetitively.