【时钟PLL】FM33LC0的PLL时钟

Jerry_Li

1. 
   

复制代码

Jerry_Li

LL_FLASH_SetLatency(FLASH,LL_FLASH_LATENCY_2);
补充一下  已经设置过wait cycle了

wangpeng

Jerry_Li 发表于 2020-6-22 15:11
LL_FLASH_SetLatency(FLASH,LL_FLASH_LATENCY_2);
补充一下  已经设置过wait cycle了

您这边代码需要重新上传一下，暂时看不到

geroge

PLL时钟有调好吗？我这边调试PLL一直不锁定

    LL_RCC_SetPLLSource(LL_RCC_PLLSOURCE_RCHF);
    LL_RCC_SetPLLPrescaler(LL_RCC_PLLSOURCE_DIV1);
    LL_RCC_SetPLLMultiplier(LL_RCC_PLL_MUL_MIN);
    LL_RCC_SetPLLDigitalDomainOutput(LL_RCC_PLL_DIGITAL_DOMAIN_OUTPUT_MUL_1);
    LL_FLASH_SetLatency(FLASH,LL_FLASH_LATENCY_2);
    LL_RCC_PLL_Enable();
    printf("LL_RCC_PLL_IsReady : %d !\r\n",LL_RCC_PLL_IsReady());
    while(LL_RCC_PLL_IsReady() == 0)
    {
        printf("LL_RCC_PLL_IsReady : %d !\r\n",LL_RCC_PLL_IsReady());
        DelayMs(500);
    }
    LL_RCC_SetSystemClockSource(LL_RCC_SYSTEM_CLKSOURCE_PLL);

复旦微刘浏

static void Pll64Init(void)
{       
  uint32_t trim;
  
  LL_RCC_Enable_RCHF();
  LL_RCC_SetRCHFFrequency(RCHF_CLOCK);
  trim = NVR_CHECK(RCHF8M_NVR_TRIM, RCHF8M_DEF_TRIM) & 0x7f;
  LL_RCC_SetRCHFTrimValue(trim);
  
  LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_RCHF, LL_RCC_PLLSOURCE_DIV8, 0x3F, LL_RCC_PLL_DIGITAL_DOMAIN_OUTPUT_MUL_1);
  LL_RCC_PLL_Enable();
        while(LL_RCC_PLL_IsReady() == 0);
  LL_FLASH_SetLatency(FLASH, LL_FLASH_LATENCY_2);
        LL_RCC_SetSystemClockSource(LL_RCC_SYSTEM_CLKSOURCE_PLL);
  
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
  LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);

}

CHL123456789

复旦微刘浏 发表于 2020-9-11 15:39
static void Pll64Init(void)
{       
  uint32_t trim;

为啥一直锁不定呢？