(((USARTCLK) == RCC_USART1CLK_PCLK) || ((USARTCLK) == RCC_USART1CLK_SYSCLK) || \
((USARTCLK) == RCC_USART1CLK_LSE) || ((USARTCLK) == RCC_USART1CLK_HSI) ||\
((USARTCLK) == RCC_USART2CLK_PCLK) || ((USARTCLK) == RCC_USART2CLK_SYSCLK) || \
((USARTCLK) == RCC_USART2CLK_LSE) || ((USARTCLK) == RCC_USART2CLK_HSI) || \
((USARTCLK) == RCC_USART3CLK_PCLK) || ((USARTCLK) == RCC_USART3CLK_SYSCLK) || \
((USARTCLK) == RCC_USART3CLK_LSE) || ((USARTCLK) == RCC_USART3CLK_HSI))