Add Hercules RM46L8 Launchpad support (Cortex R4F)

1 files changed, 40 insertions, 0 deletions

diff --git a/include/arch/rm46l8lp/driver/counter.h b/include/arch/rm46l8lp/driver/counter.h
new file mode 100644
index 0000000..ee4b595
--- /dev/null
+++ b/include/arch/rm46l8lp/driver/counter.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2020 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef COUNTER_H
+#define COUNTER_H
+
+#include "rti.h"
+#include <stdint.h>
+
+typedef uint32_t counter_value_t;
+typedef uint32_t counter_overflow_t;
+
+class Counter {
+	private:
+		Counter(const Counter &copy);
+
+	public:
+		uint32_t value;
+		uint32_t overflow;
+
+		Counter() : overflow(0) {}
+
+		inline void start() {
+			rtiREG1->CNT[0].UCx = 0;
+			rtiREG1->CNT[0].FRCx = 0;
+			rtiREG1->GCTRL |= ((uint32)1 << (rtiCOUNTER_BLOCK0 & 3));
+		}
+
+		inline void stop() {
+			rtiREG1->GCTRL &= ~(uint32)((uint32)1 << (rtiCOUNTER_BLOCK0 & 3));
+			overflow = rtiREG1->CNT[0].FRCx;
+			value = rtiREG1->CNT[0].UCx;
+		}
+};
+
+extern Counter counter;
+
+#endif