From c37554ca20e450bffa0fc3201ceda5283795e3db Mon Sep 17 00:00:00 2001
From: Fabio Utzig <utzig@utzig.org>
Date: Wed, 13 May 2015 22:19:05 -0300
Subject: Add initial serial driver

---
 os/hal/ports/NRF51/NRF51822/serial_lld.h | 119 +++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 os/hal/ports/NRF51/NRF51822/serial_lld.h

(limited to 'os/hal/ports/NRF51/NRF51822/serial_lld.h')

diff --git a/os/hal/ports/NRF51/NRF51822/serial_lld.h b/os/hal/ports/NRF51/NRF51822/serial_lld.h
new file mode 100644
index 0000000..ae8e46e
--- /dev/null
+++ b/os/hal/ports/NRF51/NRF51822/serial_lld.h
@@ -0,0 +1,119 @@
+/*
+    Copyright (C) 2015 Fabio Utzig
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    serial_lld.h
+ * @brief   NRF51822 serial subsystem low level driver header.
+ *
+ * @addtogroup SERIAL
+ * @{
+ */
+
+#ifndef _SERIAL_LLD_H_
+#define _SERIAL_LLD_H_
+
+#if (HAL_USE_SERIAL == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @name    PLATFORM configuration options
+ * @{
+ */
+/**
+ * @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(NRF51_SERIAL_USE_UART0) || defined(__DOXYGEN__)
+#define NRF51_SERIAL_USE_UART0             FALSE
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   NRF51 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.
+ * @note    This structure content is architecture dependent, each driver
+ *          implementation defines its own version and the custom static
+ *          initializers.
+ */
+typedef struct {
+  /**
+   * @brief Bit rate.
+   */
+  uint32_t                  speed;
+  /* End of the mandatory fields.*/
+} SerialConfig;
+
+/**
+ * @brief   @p SerialDriver specific data.
+ */
+#define _serial_driver_data                                                 \
+  _base_asynchronous_channel_data                                           \
+  /* Driver state.*/                                                        \
+  sdstate_t                 state;                                          \
+  /* Input queue.*/                                                         \
+  input_queue_t             iqueue;                                         \
+  /* Output queue.*/                                                        \
+  output_queue_t            oqueue;                                         \
+  /* Input circular buffer.*/                                               \
+  uint8_t                   ib[SERIAL_BUFFERS_SIZE];                        \
+  /* Output circular buffer.*/                                              \
+  uint8_t                   ob[SERIAL_BUFFERS_SIZE];                        \
+  /* End of the mandatory fields.*/
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#if (NRF51_SERIAL_USE_UART0 == TRUE) && !defined(__DOXYGEN__)
+extern SerialDriver SD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void sd_lld_init(void);
+  void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
+  void sd_lld_stop(SerialDriver *sdp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SERIAL == TRUE */
+
+#endif /* _SERIAL_LLD_H_ */
+
+/** @} */
-- 
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