diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_uart.h')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_uart.h | 192 |
1 files changed, 191 insertions, 1 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_uart.h b/nuttx/arch/arm/src/stm32/stm32_uart.h index c50581996..bd00c34e6 100644 --- a/nuttx/arch/arm/src/stm32/stm32_uart.h +++ b/nuttx/arch/arm/src/stm32/stm32_uart.h @@ -1,7 +1,7 @@ /************************************************************************************ * arch/arm/src/stm32/stm32_uart.h * - * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Copyright (C) 2009, 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -48,6 +48,163 @@ /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ +/* Make sure that we have not enabled more U[S]ARTs than are support by + * the device. + */ + +#if STM32_NUSART < 6 +# undef CONFIG_STM32_USART6 +#endif +#if STM32_NUSART < 5 +# undef CONFIG_STM32_UART5 +#endif +#if STM32_NUSART < 4 +# undef CONFIG_STM32_UART4 +#endif +#if STM32_NUSART < 3 +# undef CONFIG_STM32_USART3 +#endif +#if STM32_NUSART < 2 +# undef CONFIG_STM32_USART2 +#endif +#if STM32_NUSART < 1 +# undef CONFIG_STM32_USART1 +#endif + +/* Is there a USART enabled? */ + +#if defined(CONFIG_STM32_USART1) || defined(CONFIG_STM32_USART2) || \ + defined(CONFIG_STM32_USART3) || defined(CONFIG_STM32_UART4) || \ + defined(CONFIG_STM32_UART5) || defined(CONFIG_STM32_USART6) +# define HAVE_UART 1 +#endif + +/* Is there a serial console? */ + +#if defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_STM32_USART1) +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_UART4_SERIAL_CONSOLE +# undef CONFIG_UART5_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 1 +# define HAVE_CONSOLE 1 +#elif defined(CONFIG_USART2_SERIAL_CONSOLE) && defined(CONFIG_STM32_USART2) +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_USART4_SERIAL_CONSOLE +# undef CONFIG_USART5_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 2 +# define HAVE_CONSOLE 1 +#elif defined(CONFIG_USART3_SERIAL_CONSOLE) && defined(CONFIG_STM32_USART3) +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_UART4_SERIAL_CONSOLE +# undef CONFIG_UART5_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 3 +# define HAVE_CONSOLE 1 +#elif defined(CONFIG_USART4_SERIAL_CONSOLE) && defined(CONFIG_STM32_UART4) +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_UART5_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 4 +# define HAVE_CONSOLE 1 +#elif defined(CONFIG_USART5_SERIAL_CONSOLE) && defined(CONFIG_STM32_UART5) +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_UART4_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 5 +# define HAVE_CONSOLE 1 +#elif defined(CONFIG_USART6_SERIAL_CONSOLE) && defined(CONFIG_STM32_USART6) +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_UART4_SERIAL_CONSOLE +# undef CONFIG_UART5_SERIAL_CONSOLE +# define CONSOLE_UART 6 +# define HAVE_CONSOLE 1 +#else +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef CONFIG_USART2_SERIAL_CONSOLE +# undef CONFIG_USART3_SERIAL_CONSOLE +# undef CONFIG_UART4_SERIAL_CONSOLE +# undef CONFIG_UART5_SERIAL_CONSOLE +# undef CONFIG_USART6_SERIAL_CONSOLE +# define CONSOLE_UART 0 +# undef HAVE_CONSOLE +#endif + +/* DMA support is only provided if CONFIG_ARCH_DMA is in the NuttX configuration. + * Furthermore, DMA support is currently only implemented for the F4 (but could be + * extended to the F1 and F2 with a little effort in the DMA code. + */ + +#if !defined(HAVE_UART) || !defined(CONFIG_ARCH_DMA) || !defined(CONFIG_STM32_STM32F40XX) +# undef CONFIG_USART1_RXDMA +# undef CONFIG_USART2_RXDMA +# undef CONFIG_USART3_RXDMA +# undef CONFIG_USART4_RXDMA +# undef CONFIG_USART5_RXDMA +# undef CONFIG_USART6_RXDMA +#endif + +/* Disable the DMA configuration on all unused USARTs */ + +#ifndef CONFIG_STM32_USART1 +# undef CONFIG_USART1_RXDMA +#endif + +#ifndef CONFIG_STM32_USART2 +# undef CONFIG_USART2_RXDMA +#endif + +#ifndef CONFIG_STM32_USART3 +# undef CONFIG_USART3_RXDMA +#endif + +#ifndef CONFIG_STM32_USART4 +# undef CONFIG_USART4_RXDMA +#endif + +#ifndef CONFIG_STM32_USART5 +# undef CONFIG_USART5_RXDMA +#endif + +#ifndef CONFIG_STM32_USART6 +# undef CONFIG_USART6_RXDMA +#endif + +/* Is DMA available on any (enabled) USART? */ + +#undef SERIAL_HAVE_DMA +#if defined(CONFIG_USART1_RXDMA) || defined(CONFIG_USART2_RXDMA) || \ + defined(CONFIG_USART3_RXDMA) || defined(CONFIG_USART4_RXDMA) || \ + defined(CONFIG_USART5_RXDMA) || defined(CONFIG_USART6_RXDMA) +# define SERIAL_HAVE_DMA 1 +#endif + +/* Is DMA used on all (enabled) USARTs */ + +#define SERIAL_HAVE_ONLY_DMA 1 +#if defined(CONFIG_STM32_USART1) && !defined(CONFIG_USART1_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#elif defined(CONFIG_STM32_USART2) && !defined(CONFIG_USART2_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#elif defined(CONFIG_STM32_USART3) && !defined(CONFIG_USART3_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#elif defined(CONFIG_STM32_UART4) && !defined(CONFIG_USART4_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#elif defined(CONFIG_STM32_UART5) && !defined(CONFIG_USART5_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#elif defined(CONFIG_STM32_USART6) && !defined(CONFIG_USART6_RXDMA) +# undef SERIAL_HAVE_ONLY_DMA +#endif /************************************************************************************ * Public Types @@ -57,8 +214,41 @@ * Public Data ************************************************************************************/ +#ifndef __ASSEMBLY__ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + /************************************************************************************ * Public Functions ************************************************************************************/ +/**************************************************************************** + * Name: stm32_serial_dma_poll + * + * Description: + * Must be called periodically if any STM32 UART is configured for DMA. + * The DMA callback is triggered for each fifo size/2 bytes, but this can + * result in some bytes being transferred but not collected if the incoming + * data is not a whole multiple of half the FIFO size. + * + * May be safely called from either interrupt or thread context. + * + ****************************************************************************/ + +#ifdef SERIAL_HAVE_DMA +EXTERN void stm32_serial_dma_poll(void); +#endif + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ #endif /* __ARCH_ARM_STC_STM32_STM32_UART_H */ |