[GitHub] [nuttx] TimJTi commented on issue #8218: UART4 & UART5 missing from stm32f103r_pinmap.h

["TimJTi (via GitHub)" <gi...@apache.org>]

TimJTi commented on issue #8218:
URL: https://github.com/apache/nuttx/issues/8218#issuecomment-1399592089

   Easy I think?
   
   #if defined(ARCH_CHIP_STMxxx) || defined(ARCH_CHIP_STMyyy || etc
   #  define GPIO_UART4_RX
   etc
   #endif
   
   From: Andrew Brahim ***@***.***>
   Date: Sunday, 22 January 2023 at 19:26
   To: apache/nuttx ***@***.***>
   Cc: Subscribed ***@***.***>
   Subject: [apache/nuttx] UART4 & UART5 missing from stm32f103r_pinmap.h (Issue #8218)
   
   The higher density stm32f103Rx chips (such as the stm32f103ret6) have UART4 & UART5. These UARTS are missing from the following pinmap:
   
   https://github.com/apache/nuttx/blob/fac10b6ebdec6d98f8b833137153ec43e71d706d/arch/arm/src/stm32/hardware/stm32f103r_pinmap.h#L271
   
   Adding the following lines would fix this issue:
   
   #define GPIO_UART4_RX       (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN11)
   
   #define GPIO_UART4_TX       (GPIO_ALT|GPIO_CNF_AFPP|GPIO_MODE_50MHz|GPIO_PORTC|GPIO_PIN10)
   
   
   
   #define GPIO_UART5_RX       (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|GPIO_PORTD|GPIO_PIN2)
   
   #define GPIO_UART5_TX       (GPIO_ALT|GPIO_CNF_AFPP|GPIO_MODE_50MHz|GPIO_PORTC|GPIO_PIN12)
   
   However I am not sure if this would cause a breaking change on the lower density chips that do not have these UARTS.
   
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