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Diffstat (limited to 'os/hal/platforms/MSP430/serial_lld.h')
| -rw-r--r-- | os/hal/platforms/MSP430/serial_lld.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/os/hal/platforms/MSP430/serial_lld.h b/os/hal/platforms/MSP430/serial_lld.h new file mode 100644 index 000000000..63d94046e --- /dev/null +++ b/os/hal/platforms/MSP430/serial_lld.h @@ -0,0 +1,159 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 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 MSP430/serial_lld.h
+ * @brief MSP430 low level serial driver header
+ * @addtogroup MSP430_SERIAL
+ * @{
+ */
+
+#ifndef _SERIAL_LLD_H_
+#define _SERIAL_LLD_H_
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief Serial buffers size.
+ * @details Configuration parameter, you can change the depth of the queue
+ * buffers depending on the requirements of your application.
+ * @note The default is 32 bytes for both the transmission and receive buffers.
+ */
+#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__)
+#define SERIAL_BUFFERS_SIZE 32
+#endif
+
+/**
+ * @brief Default bit rate.
+ * @details Configuration parameter, at startup the UARTs are configured at
+ * this speed.
+ */
+#if !defined(DEFAULT_USART_BITRATE) || defined(__DOXYGEN__)
+#define DEFAULT_USART_BITRATE 38400
+#endif
+
+/**
+ * @brief USART0 driver enable switch.
+ * @details If set to @p TRUE the support for USART0 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(USE_MSP430_USART0) || defined(__DOXYGEN__)
+#define USE_MSP430_USART0 TRUE
+#endif
+
+/**
+ * @brief USART1 driver enable switch.
+ * @details If set to @p TRUE the support for USART1 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(USE_MSP430_USART1) || defined(__DOXYGEN__)
+#define USE_MSP430_USART1 FALSE
+#endif
+
+/*===========================================================================*/
+/* Unsupported event flags and custom events. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * Serial Driver condition flags type.
+ */
+typedef uint8_t sdflags_t;
+
+/**
+ * @brief @p SerialDriver specific data.
+ */
+struct _serial_driver_data {
+ /**
+ * Input queue, incoming data can be read from this input queue by
+ * using the queues APIs.
+ */
+ InputQueue iqueue;
+ /**
+ * Output queue, outgoing data can be written to this output queue by
+ * using the queues APIs.
+ */
+ OutputQueue oqueue;
+ /**
+ * Status Change @p EventSource. This event is generated when one or more
+ * condition flags change.
+ */
+ EventSource sevent;
+ /**
+ * I/O driver status flags.
+ */
+ sdflags_t flags;
+ /**
+ * Input circular buffer. + */
+ uint8_t ib[SERIAL_BUFFERS_SIZE];
+ /**
+ * Output circular buffer. + */
+ uint8_t ob[SERIAL_BUFFERS_SIZE];
+};
+
+/**
+ * @brief Macro for baud rate computation.
+ * @note Make sure the final baud rate is within tolerance.
+ */
+#define UBR(b) (SMCLK / (b))
+
+/**
+ * @brief MSP430 Serial Driver configuration structure.
+ * @details An instance of this structure must be passed to @p sdStart()
+ * in order to configure and start a serial driver operations.
+ */
+typedef struct {
+ uint16_t div;
+ uint8_t mod;
+ uint8_t ctl;
+} SerialDriverConfig;
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+/** @cond never*/
+#if USE_MSP430_USART0
+extern SerialDriver SD1;
+#endif
+#if USE_MSP430_USART1
+extern SerialDriver SD2;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void sd_lld_init(void);
+ void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config);
+ void sd_lld_stop(SerialDriver *sdp);
+#ifdef __cplusplus
+}
+#endif
+/** @endcond*/
+
+#endif /* _SERIAL_LLD_H_ */
+
+/** @} */
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