Running STM32 without crystal

[ydamihux]

Posted on February 09, 2015 at 20:47The original post was too long to process during our migration. Please click on the attachment to read the original post.

[Tesla DeLorean]

Posted on February 09, 2015 at 21:12

The HSI clock has an asymmetrical duty cycle, so you have to divide it by TWO to get it symmetrical and then multiply by SIXTEEN

(8 / 2) * 16 = 64

[Tesla DeLorean]

Posted on February 09, 2015 at 21:15

RCC->CFGR |= (uint32_t)(RCC_CFGR_PLLSRC_HSI_Div2 | RCC_CFGR_PLLMULL16);