我试了，还是不行。
调试了一下，卡在这儿。
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) //卡在这一句
{
temp++;
delay_ms(10);
}
FlagStatus RCC_GetFlagStatus(uint8_t RCC_FLAG)
{
uint32_t tmp = 0;
uint32_t statusreg = 0;
FlagStatus bitstatus = RESET;
/* Check the parameters */
assert_param(IS_RCC_FLAG(RCC_FLAG));
/* Get the RCC register index */
tmp = RCC_FLAG >> 5;
if (tmp == 1) /* The flag to check is in CR register */
{
statusreg = RCC->CR;
}
else if (tmp == 2) /* The flag to check is in BDCR register */
{
statusreg = RCC->BDCR;
}
else /* The flag to check is in CSR register */
{
statusreg = RCC->CSR;
}
/* Get the flag position */
tmp = RCC_FLAG & FLAG_Mask;
if ((statusreg & ((uint32_t)1 << tmp)) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
/* Return the flag status */
return bitstatus;
}
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楼主
