Diff: targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/sercom/sercom.h

Revision:

579:53297373a894

Child:

592:a274ee790e56

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/sercom/sercom.h	Wed Jul 01 09:45:11 2015 +0100
@@ -0,0 +1,136 @@
+/**
+ * \file
+ *
+ * \brief SAM Serial Peripheral Interface Driver
+ *
+ * Copyright (C) 2012-2014 Atmel Corporation. All rights reserved.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * 3. The name of Atmel may not be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 4. This software may only be redistributed and used in connection with an
+ *    Atmel microcontroller product.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * \asf_license_stop
+ *
+ */
+/**
+* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+*/
+
+#ifndef SERCOM_H_INCLUDED
+#define SERCOM_H_INCLUDED
+
+#include <compiler.h>
+#include <system.h>
+#include <clock.h>
+#include <system_interrupt.h>
+#include "sercom_pinout.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if (SAMD10) || (SAMD11)
+
+#if (SERCOM0_GCLK_ID_SLOW == SERCOM1_GCLK_ID_SLOW && \
+     SERCOM0_GCLK_ID_SLOW == SERCOM2_GCLK_ID_SLOW)
+#  define SERCOM_GCLK_ID SERCOM0_GCLK_ID_SLOW
+#else
+#  error "SERCOM modules must share the same slow GCLK channel ID."
+#endif
+
+#else
+
+#if (SERCOM0_GCLK_ID_SLOW == SERCOM1_GCLK_ID_SLOW && \
+     SERCOM0_GCLK_ID_SLOW == SERCOM2_GCLK_ID_SLOW && \
+     SERCOM0_GCLK_ID_SLOW == SERCOM3_GCLK_ID_SLOW)
+#  define SERCOM_GCLK_ID SERCOM0_GCLK_ID_SLOW
+#else
+#  error "SERCOM modules must share the same slow GCLK channel ID."
+#endif
+
+#endif
+
+#if (0x1ff >= REV_SERCOM)
+#  define FEATURE_SERCOM_SYNCBUSY_SCHEME_VERSION_1
+#elif (0x2ff >= REV_SERCOM)
+#  define FEATURE_SERCOM_SYNCBUSY_SCHEME_VERSION_2
+#else
+#  error "Unknown SYNCBUSY scheme for this SERCOM revision"
+#endif
+
+/**
+ * \brief sercom asynchronous operation mode
+ *
+ * Select sercom asynchronous operation mode
+ */
+enum sercom_asynchronous_operation_mode {
+    SERCOM_ASYNC_OPERATION_MODE_ARITHMETIC = 0,
+    SERCOM_ASYNC_OPERATION_MODE_FRACTIONAL,
+};
+
+/**
+ * \brief sercom asynchronous samples per bit
+ *
+ * Select number of samples per bit
+ */
+enum sercom_asynchronous_sample_num {
+    SERCOM_ASYNC_SAMPLE_NUM_3 = 3,
+    SERCOM_ASYNC_SAMPLE_NUM_8 = 8,
+    SERCOM_ASYNC_SAMPLE_NUM_16 = 16,
+};
+
+enum status_code sercom_set_gclk_generator(
+    const enum gclk_generator generator_source,
+    const bool force_change);
+
+enum status_code _sercom_get_sync_baud_val(
+    const uint32_t baudrate,
+    const uint32_t external_clock,
+    uint16_t *const baudval);
+
+enum status_code _sercom_get_async_baud_val(
+    const uint32_t baudrate,
+    const uint32_t peripheral_clock,
+    uint16_t *const baudval,
+    enum sercom_asynchronous_operation_mode mode,
+    enum sercom_asynchronous_sample_num sample_num);
+
+uint32_t _sercom_get_default_pad(
+    Sercom *const sercom_module,
+    const uint8_t pad);
+
+uint8_t _sercom_get_sercom_inst_index(
+    Sercom *const sercom_instance);
+#ifdef __cplusplus
+}
+#endif
+
+#endif //__SERCOM_H_INCLUDED