AnsweredAssumed Answered

STM8S  - 32bit atomic access

Question asked by kuczek.krzysztof.001 on Jan 2, 2017
Latest reply on Jan 16, 2017 by luca


I'm stm8 newbie, and i wonder if i can do assumption, that reading uint32 variable will be atomic.

There is simple function returning system time measured in ms using uint32_t variable, and it's looks like following

 207                     ; 109 uint32_t systemGetBootTime(void)
 207                     ; 110 {
 208                     .text:    section    .text,new
 209  0000               _systemGetBootTime:
 211                     ; 111     return systemBootTime;
 212  0000 ae0000            ldw    x,#_systemBootTime
 215  0003 cc0000            jp    c_ltor


so i wonder how it works, because ldw instruction is described as 16 bit transferring...

what is c_ltor?

Thank you in advance.