SW gpt:
1、SW GPT support multiple the 32 users ofmaximum, support millisecond level time,1tick = 1ms.
2、SW GPT can wake up system, and it is the oneshot timer when you start.
OStimer:
1、OS timer is systick timer of CM4 core, which clock source is CPU clock, and 1tick means 1ms.
2、OS timer can wakeup system if enter sleep mode