uint32 int32 -1 相等判断
#define RT_WAITING_FOREVER -1
int main(int argc, char *argv[]) {
uint32_t timeout = 0;
timeout = -1;
if (timeout == RT_WAITING_FOREVER) {
printf("==\r\n");
} else {
printf("!=\r\n");
}
return 0;
}
...小于 1 分钟