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, 72 insertions, 0 deletions

diff --git a/atmel-samd/asf4/samd21/samd21a/include/instance/ac.h b/atmel-samd/asf4/samd21/samd21a/include/instance/ac.h
new file mode 100644
index 000000000..af6120f6c
--- /dev/null
+++ b/atmel-samd/asf4/samd21/samd21a/include/instance/ac.h
@@ -0,0 +1,72 @@
+/**
+ * \file
+ *
+ * \brief Instance description for AC
+ *
+ * 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_AC_INSTANCE_
+#define _SAMD21_AC_INSTANCE_
+
+/* ========== Register definition for AC peripheral ========== */
+#if (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+#define REG_AC_CTRLA               (0x42004400) /**< \brief (AC) Control A */
+#define REG_AC_CTRLB               (0x42004401) /**< \brief (AC) Control B */
+#define REG_AC_EVCTRL              (0x42004402) /**< \brief (AC) Event Control */
+#define REG_AC_INTENCLR            (0x42004404) /**< \brief (AC) Interrupt Enable Clear */
+#define REG_AC_INTENSET            (0x42004405) /**< \brief (AC) Interrupt Enable Set */
+#define REG_AC_INTFLAG             (0x42004406) /**< \brief (AC) Interrupt Flag Status and Clear */
+#define REG_AC_STATUSA             (0x42004408) /**< \brief (AC) Status A */
+#define REG_AC_STATUSB             (0x42004409) /**< \brief (AC) Status B */
+#define REG_AC_STATUSC             (0x4200440A) /**< \brief (AC) Status C */
+#define REG_AC_WINCTRL             (0x4200440C) /**< \brief (AC) Window Control */
+#define REG_AC_COMPCTRL0           (0x42004410) /**< \brief (AC) Comparator Control 0 */
+#define REG_AC_COMPCTRL1           (0x42004414) /**< \brief (AC) Comparator Control 1 */
+#define REG_AC_SCALER0             (0x42004420) /**< \brief (AC) Scaler 0 */
+#define REG_AC_SCALER1             (0x42004421) /**< \brief (AC) Scaler 1 */
+#else
+#define REG_AC_CTRLA               (*(RwReg8 *)0x42004400UL) /**< \brief (AC) Control A */
+#define REG_AC_CTRLB               (*(WoReg8 *)0x42004401UL) /**< \brief (AC) Control B */
+#define REG_AC_EVCTRL              (*(RwReg16*)0x42004402UL) /**< \brief (AC) Event Control */
+#define REG_AC_INTENCLR            (*(RwReg8 *)0x42004404UL) /**< \brief (AC) Interrupt Enable Clear */
+#define REG_AC_INTENSET            (*(RwReg8 *)0x42004405UL) /**< \brief (AC) Interrupt Enable Set */
+#define REG_AC_INTFLAG             (*(RwReg8 *)0x42004406UL) /**< \brief (AC) Interrupt Flag Status and Clear */
+#define REG_AC_STATUSA             (*(RoReg8 *)0x42004408UL) /**< \brief (AC) Status A */
+#define REG_AC_STATUSB             (*(RoReg8 *)0x42004409UL) /**< \brief (AC) Status B */
+#define REG_AC_STATUSC             (*(RoReg8 *)0x4200440AUL) /**< \brief (AC) Status C */
+#define REG_AC_WINCTRL             (*(RwReg8 *)0x4200440CUL) /**< \brief (AC) Window Control */
+#define REG_AC_COMPCTRL0           (*(RwReg  *)0x42004410UL) /**< \brief (AC) Comparator Control 0 */
+#define REG_AC_COMPCTRL1           (*(RwReg  *)0x42004414UL) /**< \brief (AC) Comparator Control 1 */
+#define REG_AC_SCALER0             (*(RwReg8 *)0x42004420UL) /**< \brief (AC) Scaler 0 */
+#define REG_AC_SCALER1             (*(RwReg8 *)0x42004421UL) /**< \brief (AC) Scaler 1 */
+#endif /* (defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+/* ========== Instance parameters for AC peripheral ========== */
+#define AC_CMP_NUM                  2        // Number of comparators
+#define AC_GCLK_ID_ANA              32       // Index of Generic Clock for analog
+#define AC_GCLK_ID_DIG              31       // Index of Generic Clock for digital
+#define AC_NUM_CMP                  2       
+#define AC_PAIRS                    1        // Number of pairs of comparators
+
+#endif /* _SAMD21_AC_INSTANCE_ */