USART on STM32407 Discovery Board

Posted on December 29, 2012 at 18:29

When trying to use the usarts on this discovery board I keep getting *** error 65: access violation at 0x40023800 : no 'read' permission

and stops running at this line of code

RCC->CR |= (uint32_t)0x00000001;

/* Reset CFGR register */

RCC->CFGR = 0x00000000;

/* Reset HSEON, CSSON and PLLON bits */

RCC->CR &= (uint32_t)0xFEF6FFFF;

can any one help me with this please?

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