* 4. The default value of HSE crystal is set to 8MHz, refer to "HSE_VALUE" define\r
* in "stm32l1xx.h" file. When HSE is used as system clock source, directly or\r
* through PLL, and you are using different crystal you have to adapt the HSE\r
* value to your own configuration.\r
* 4. The default value of HSE crystal is set to 8MHz, refer to "HSE_VALUE" define\r
* in "stm32l1xx.h" file. When HSE is used as system clock source, directly or\r
* through PLL, and you are using different crystal you have to adapt the HSE\r
* value to your own configuration.\r