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, 32 insertions, 0 deletions

diff --git a/atmel-samd/asf4/samd21/examples/driver_examples.h b/atmel-samd/asf4/samd21/examples/driver_examples.h
new file mode 100644
index 000000000..7a4353b98
--- /dev/null
+++ b/atmel-samd/asf4/samd21/examples/driver_examples.h
@@ -0,0 +1,32 @@
+/*
+ * Code generated from Atmel Start.
+ *
+ * This file will be overwritten when reconfiguring your Atmel Start project.
+ * Please copy examples or other code you want to keep to a separate file
+ * to avoid losing it when reconfiguring.
+ */
+#ifndef DRIVER_EXAMPLES_H_INCLUDED
+#define DRIVER_EXAMPLES_H_INCLUDED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void ADC_0_example(void);
+
+void FLASH_0_example(void);
+
+void I2C_0_example(void);
+
+void USART_0_example(void);
+
+void delay_example(void);
+
+void PWM_0_example(void);
+
+void DAC_0_example(void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif // DRIVER_EXAMPLES_H_INCLUDED