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STM32F0: Add some protection. There is only one interrupt for USART3-8. Current interrupt handling logic will support only one interrupt in that range.

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This commit is contained in:
Gregory Nutt 2017-04-29 12:58:06 -06:00
parent e9a5477506
commit f0bbe56620
1 changed files with 30 additions and 1 deletions
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31
arch/arm/src/stm32f0/stm32f0_uart.h
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@ -79,11 +79,40 @@
# undef CONFIG_STM32F0_USART1
#endif
/* USART 3-8 are multiplexed to the same interrupt. Current interrupt
* handling logic will support only one USART in that range. That is
* not an issue for currently supported chips but could become an
* issue in the future.
*/
#if defined(CONFIG_STM32F0_USART3)
# undef CONFIG_STM32F0_USART4
# undef CONFIG_STM32F0_USART5
# undef CONFIG_STM32F0_USART6
# undef CONFIG_STM32F0_USART7
# undef CONFIG_STM32F0_USART8
#elif defined(CONFIG_STM32F0_USART4)
# undef CONFIG_STM32F0_USART5
# undef CONFIG_STM32F0_USART6
# undef CONFIG_STM32F0_USART7
# undef CONFIG_STM32F0_USART8
#elif defined(CONFIG_STM32F0_USART5)
# undef CONFIG_STM32F0_USART6
# undef CONFIG_STM32F0_USART7
# undef CONFIG_STM32F0_USART8
#elif defined(CONFIG_STM32F0_USART6)
# undef CONFIG_STM32F0_USART7
# undef CONFIG_STM32F0_USART8
#elif defined(CONFIG_STM32F0_USART7)
# undef CONFIG_STM32F0_USART8
#endif
/* Is there a USART enabled? */
#if defined(CONFIG_STM32F0_USART1) || defined(CONFIG_STM32F0_USART2) || \
defined(CONFIG_STM32F0_USART3) || defined(CONFIG_STM32F0_USART4) || \
defined(CONFIG_STM32F0_USART5)
defined(CONFIG_STM32F0_USART5) || defined(CONFIG_STM32F0_USART6) || \
defined(CONFIG_STM32F0_USART7) || defined(CONFIG_STM32F0_USART8)
# define HAVE_USART 1
#endif