4.9 获取sys_tick

<h1>默认配置 <code>W800_SDK_V1.00.08/src/os/rtos/include/FreeRTOSConfig.h</code></h1> <pre><code>#define configTICK_RATE_HZ          ( ( portTickType ) 500u )</code></pre> <h1>获取系统时间接口如下</h1> <pre><code>/* ********************************************************************************************************* *                                         GET CURRENT SYSTEM TIME * * Description: This function is used by your application to obtain the current value of the 32-bit *              counter which keeps track of the number of clock ticks. * * Arguments  : none * * Returns    : The current value of OSTime ********************************************************************************************************* */  u32 tls_os_get_time(void)</code></pre> <h1>返回结果为tick次数，1个tick为 2ms，如需1个tick为 1ms，则需配置 <code>W800_SDK_V1.00.08/src/os/rtos/include/FreeRTOSConfig.h</code></h1> <pre><code>#define configTICK_RATE_HZ          ( ( portTickType ) 1000u )</code></pre>