HC32 F00 时钟

只看该作者 · 2020-3-29 20:19

设定Systick配置
en_result_t Clk_SysTickConfig(stc_clk_systickcfg_t *pstcCfg)
{
if (NULL == pstcCfg)
{
      return ErrorInvalidParameter;
}

M0P_CLOCK->PERI_CLKEN_f.TICK = 1;
switch (pstcCfg->enClk)
{
      case ClkRCH:
         M0P_CLOCK->SYSTICK_CR_f.CLK_SEL = 0x2;
         break;
      case ClkRCL:
         M0P_CLOCK->SYSTICK_CR_f.CLK_SEL = 0x1;
         break;
      case ClkXTH:
         M0P_CLOCK->SYSTICK_CR_f.CLK_SEL = 0x3;
         break;
      default:
         return ErrorInvalidParameter;
}

M0P_CLOCK->SYSTICK_CR_f.NOREF = pstcCfg->bNoRef;

SysTick->LOAD  = (uint32_t)(pstcCfg->u32LoadVal - 1UL);                      /* set reload register */
NVIC_SetPriority(SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL);             /* set Priority for Systick Interrupt */
SysTick->VAL = 0UL;                                                          /* Load the SysTick Counter Value */
SysTick->CTRL  = SysTick_CTRL_ENABLE_Msk;

return Ok;
}

只看该作者 · 2020-3-29 20:20

Systick SKEW 获取
boolean_t Clk_SysTickSkewGet(void)
{
return (boolean_t)M0P_CLOCK->SYSTICK_CR_f.SKEW;
}

只看该作者 · 2020-3-29 20:21

Systick CALIB 获取
uint32_t Clk_SysTickStcalibGet(void)
{
return (uint32_t)M0P_CLOCK->SYSTICK_CR_f.STCALIB;
}

只看该作者 · 2020-3-29 20:23

设定时钟外设调试开关
en_result_t Clk_DebugClk(en_clk_debug_t enPeri, boolean_t bFlag)
{
switch (enPeri)
{
      case ClkDBGTim0:
      case ClkDBGTim1:
      case ClkDBGTim2:
      case ClkDBGLpTim:
      case ClkDBGTim4:
      case ClkDBGTim5:
      case ClkDBGTim6:
      case ClkDBGTPca:
      case ClkDBGTWdt:
      case ClkDBGTRtc:
      case ClkDBGTTick:
         setBit(&M0P_CLOCK->DEBUG_ACTIVE, 1 << enPeri, bFlag);
         break;
      default:
         return ErrorInvalidParameter;
}
return Ok;
}

只看该作者 · 2020-3-30 09:04

为什么时钟需要解锁呢？什么情况下可以锁死时钟呢？