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Watchdog reset while changing CLock frequency

Question asked by thomas.gigo on Oct 14, 2015
Latest reply on Oct 14, 2015 by peacock.jack.003
I have configured my stm32f427 microcontroller,  Sysclk to run in a clock frequency of 60mhz(HSI and PLL). I have reduced it to 16mhz (Sysclk directly from HSI). While executing this code watchdog resets.
Below mentioned the code I have used to change the clock frequency.
     while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);

     RCC_HCLKConfig(RCC_SYSCLK_Div1); /* Configure HCLK same as SYSCLK */

Please help me in solving in this issue.

Thanks in Advance