lib: Add Atmel SAM E70 headers

Signed-off-by: Alex Maclean <monkeh@monkeh.net>

1 files changed, 80 insertions, 0 deletions

diff --git a/lib/same70b/gcc/system_same70n21b.c b/lib/same70b/gcc/system_same70n21b.c
new file mode 100644
index 00000000..3fcd20f9
--- /dev/null
+++ b/lib/same70b/gcc/system_same70n21b.c
@@ -0,0 +1,80 @@
+/**
+ * \file
+ *
+ * \brief System configuration file for ATSAME70N21B
+ *
+ * Copyright (c) 2019 Microchip Technology Inc.
+ *
+ * \license_start
+ *
+ * \page License
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ *
+ * \license_stop
+ *
+ */
+
+#include "same70n21b.h"
+
+/** \cond 0 */
+/* *INDENT-OFF* */
+#ifdef __cplusplus
+extern "C" {
+#endif
+/* *INDENT-ON* */
+/** \endcond */
+
+/**
+ * Initial system clock frequency. The System RC Oscillator (RCSYS) provides
+ *  the source for the main clock at chip startup.
+ */
+#define __SYSTEM_CLOCK    (12000000)
+
+uint32_t SystemCoreClock = __SYSTEM_CLOCK;  /*!< System Clock Frequency (Core Clock)*/
+
+/**
+ * Initialize the system
+ *
+ * \brief  Setup the microcontroller system.
+ *         Initialize the System and update the SystemCoreClock variable.
+ */
+void SystemInit(void)
+{
+    // Keep the default device state after reset
+    SystemCoreClock = __SYSTEM_CLOCK;
+    return;
+}
+
+/**
+ * Update SystemCoreClock variable
+ *
+ * \brief  Updates the SystemCoreClock with current core Clock
+ *         retrieved from cpu registers.
+ */
+void SystemCoreClockUpdate(void)
+{
+    // Not implemented
+    SystemCoreClock = __SYSTEM_CLOCK;
+    return;
+}
+
+/** \cond 0 */
+/* *INDENT-OFF* */
+#ifdef __cplusplus
+}
+#endif
+/* *INDENT-ON* */
+/** \endcond */