如何对GD32F350的时钟频率进行配置呢

static void system_clock_120m_hxtal(void){  uint32_t timeout = 0U;  uint32_t stab_flag = 0U;  /* enable HXTAL */  RCU_CTL0 |= RCU_CTL0_HXTALEN;//1：使能外部 4 ~ 32 MHz 晶体振荡器  /* wait unt...