GD32F30x外部晶振修改

晶振修改"/>

GD32F30x外部晶振修改

修改外部晶振

获取时钟频率

/*!\brief      get the system clock, bus and peripheral clock frequency\param[in]  clock: the clock frequency which to getonly one parameter can be selected which is shown as below:\arg        CK_SYS: system clock frequency\arg        CK_AHB: AHB clock frequency\arg        CK_APB1: APB1 clock frequency\arg        CK_APB2: APB2 clock frequency\param[out] none\retval     clock frequency of system, AHB, APB1, APB2
*/
uint32_t rcu_clock_freq_get(rcu_clock_freq_enum clock)