Move to ASF4 and introduce SAMD51 support. (#258)3.0.0-alpha.0

* atmel-samd: Remove ASF3. This will break builds.

* atmel-samd: Add ASF4 for the SAMD21 and SAMD51.

* Introduce the supervisor concept to facilitate porting.

The supervisor is the code which runs individual MicroPython VMs. By
splitting it out we make it more consistent and easier to find.

This also adds very basic SAMD21 and SAMD51 support using the
supervisor. Only the REPL currently works.

This begins the work for #178.

1 files changed, 59 insertions, 0 deletions

diff --git a/atmel-samd/asf4/samd21/include/instance/dac.h b/atmel-samd/asf4/samd21/include/instance/dac.h
new file mode 100644
index 000000000..c034a56a5
--- /dev/null
+++ b/atmel-samd/asf4/samd21/include/instance/dac.h
@@ -0,0 +1,59 @@
+/**
+ * \file
+ *
+ * \brief Instance description for DAC
+ *
+ * Copyright (c) 2016 Atmel Corporation,
+ *                    a wholly owned subsidiary of Microchip Technology Inc.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * 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 Licence 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.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#ifndef _SAMD21_DAC_INSTANCE_
+#define _SAMD21_DAC_INSTANCE_
+
+/* ========== Register definition for DAC peripheral ========== */
+#if (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+#define REG_DAC_CTRLA              (0x42004800) /**< \brief (DAC) Control A */
+#define REG_DAC_CTRLB              (0x42004801) /**< \brief (DAC) Control B */
+#define REG_DAC_EVCTRL             (0x42004802) /**< \brief (DAC) Event Control */
+#define REG_DAC_INTENCLR           (0x42004804) /**< \brief (DAC) Interrupt Enable Clear */
+#define REG_DAC_INTENSET           (0x42004805) /**< \brief (DAC) Interrupt Enable Set */
+#define REG_DAC_INTFLAG            (0x42004806) /**< \brief (DAC) Interrupt Flag Status and Clear */
+#define REG_DAC_STATUS             (0x42004807) /**< \brief (DAC) Status */
+#define REG_DAC_DATA               (0x42004808) /**< \brief (DAC) Data */
+#define REG_DAC_DATABUF            (0x4200480C) /**< \brief (DAC) Data Buffer */
+#else
+#define REG_DAC_CTRLA              (*(RwReg8 *)0x42004800UL) /**< \brief (DAC) Control A */
+#define REG_DAC_CTRLB              (*(RwReg8 *)0x42004801UL) /**< \brief (DAC) Control B */
+#define REG_DAC_EVCTRL             (*(RwReg8 *)0x42004802UL) /**< \brief (DAC) Event Control */
+#define REG_DAC_INTENCLR           (*(RwReg8 *)0x42004804UL) /**< \brief (DAC) Interrupt Enable Clear */
+#define REG_DAC_INTENSET           (*(RwReg8 *)0x42004805UL) /**< \brief (DAC) Interrupt Enable Set */
+#define REG_DAC_INTFLAG            (*(RwReg8 *)0x42004806UL) /**< \brief (DAC) Interrupt Flag Status and Clear */
+#define REG_DAC_STATUS             (*(RoReg8 *)0x42004807UL) /**< \brief (DAC) Status */
+#define REG_DAC_DATA               (*(RwReg16*)0x42004808UL) /**< \brief (DAC) Data */
+#define REG_DAC_DATABUF            (*(RwReg16*)0x4200480CUL) /**< \brief (DAC) Data Buffer */
+#endif /* (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+/* ========== Instance parameters for DAC peripheral ========== */
+#define DAC_DMAC_ID_EMPTY           40       // Index of DMAC EMPTY trigger
+#define DAC_GCLK_ID                 33       // Index of Generic Clock
+
+#endif /* _SAMD21_DAC_INSTANCE_ */