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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-07-26 15:01:58 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-07-26 15:01:58 +0000 |
| commit | 8c836a17ffbb2af2a0d10db3a3b031c4ee4b2f3d (patch) | |
| tree | a4a83ff83c2a4bddb88bb643597fe2594375d906 /os/hal/platforms/STM32/uart_lld.h | |
| parent | d7e91ec7012e4165f8127edaa8512469cdc6b583 (diff) | |
| download | ChibiOS-8c836a17ffbb2af2a0d10db3a3b031c4ee4b2f3d.tar.gz ChibiOS-8c836a17ffbb2af2a0d10db3a3b031c4ee4b2f3d.tar.bz2 ChibiOS-8c836a17ffbb2af2a0d10db3a3b031c4ee4b2f3d.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2090 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/STM32/uart_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32/uart_lld.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32/uart_lld.h b/os/hal/platforms/STM32/uart_lld.h new file mode 100644 index 000000000..50216608e --- /dev/null +++ b/os/hal/platforms/STM32/uart_lld.h @@ -0,0 +1,163 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file STM32/uart_lld.h
+ * @brief STM32 low level UART driver header.
+ *
+ * @addtogroup STM32_UART
+ * @{
+ */
+
+#ifndef _UART_LLD_H_
+#define _UART_LLD_H_
+
+#if CH_HAL_USE_UART || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief UART driver on USART1 enable switch.
+ * @details If set to @p TRUE the support for USART1 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(STM32_UART_USE_USART1) || defined(__DOXYGEN__)
+#define STM32_UART_USE_USART1 TRUE
+#endif
+
+/**
+ * @brief USART1 interrupt priority level setting.
+ */
+#if !defined(STM32_UART_USART1_IRQ_PRIO) || defined(__DOXYGEN__)
+#define STM32_UART_USART1_IRQ_PRIORITY 12
+#endif
+
+/**
+ * @brief USART1 DMA priority (0..3|lowest..highest).
+ * @note The priority level is used for both the TX and RX DMA channels but
+ * because of the channels ordering the RX channel has always priority
+ * over the TX channel.
+ */
+#if !defined(STM32_UART_USART1_DMA_PRIO) || defined(__DOXYGEN__)
+#define STM32_UART_USART1_DMA_PRIORITY 1
+#endif
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief UART driver condition flags type.
+ */
+typedef uint32_t uartflags_t;
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /** @brief End of transmission buffer callback.*/
+ uartcb_t uc_txend1;
+ /** @brief Physical end of transmission callback.*/
+ uartcb_t uc_txend2;
+ /** @brief Receive buffer filled callback.*/
+ uartcb_t uc_rxend;
+ /** @brief Character received while out if the @p UART_RECEIVE state.*/
+ uartcb_t uc_rxchar;
+ /** @brief Receive error callback.*/
+ uartcb_t uc_rxerr;
+ /* End of the mandatory fields.*/
+ /** @brief Bit rate.*/
+ uint32_t uc_speed;
+ /** @brief Initialization value for the CR1 register.*/
+ uint16_t uc_cr1;
+ /** @brief Initialization value for the CR2 register.*/
+ uint16_t uc_cr2;
+ /** @brief Initialization value for the CR3 register.*/
+ uint16_t uc_cr3;
+} UARTConfig;
+
+/**
+ * @brief Structure representing an UART driver.
+ */
+typedef struct {
+ /** @brief Driver state.*/
+ uartstate_t ud_state;
+ /** @brief Current configuration data.*/
+ const UARTConfig *ud_config;
+ /** @brief Transmitter state.*/
+ uarttxstate_t ud_txstate;
+ /** @brief Receiver state.*/
+ uartrxstate_t ud_rxstate;
+ /** @brief UART driver status flags.*/
+ uartflags_t ud_flags;
+ /* End of the mandatory fields.*/
+ /** @brief Default receive buffer while into @p UART_RX_IDLE state.*/
+ uint16_t ud_rxbuf;
+ /** @brief Pointer to the USART registers block.*/
+ USART_TypeDef *ud_usart;
+ /** @brief Pointer to the receive DMA channel registers block.*/
+ DMA_Channel_TypeDef *ud_dmarx;
+ /** @brief Receive DMA flags mask*/
+ uint32_t ud_dmarmsk;
+ /** @brief Pointer to the transmit DMA channel registers block.*/
+ DMA_Channel_TypeDef *ud_dmatx;
+ /** @brief Transmit DMA flags mask*/
+ uint32_t ud_dmatmsk;
+ /** @brief DMA priority bit mask.*/
+ uint32_t ud_dmaccr;
+} UARTDriver;
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void uart_lld_init(void);
+ void uart_lld_start(UARTDriver *uartp);
+ void uart_lld_stop(UARTDriver *uartp);
+ void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf);
+ void uart_lld_stop_send(UARTDriver *uartp);
+ void uart_lld_start_receive(UARTDriver *uartp, size_t n, void *rxbuf);
+ void uart_lld_stop_receive(UARTDriver *uartp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CH_HAL_USE_UART */
+
+#endif /* _UART_LLD_H_ */
+
+/** @} */
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