MSP430: save & restore entire SRAM to/from FRAM

1 files changed, 64 insertions, 0 deletions

diff --git a/src/app/transactiontest/main.cc b/src/app/transactiontest/main.cc
new file mode 100644
index 0000000..e359e67
--- /dev/null
+++ b/src/app/transactiontest/main.cc
@@ -0,0 +1,64 @@
+#include "arch.h"
+#include "driver/gpio.h"
+#include "driver/stdout.h"
+#include "driver/uptime.h"
+
+#ifndef TIMER_CYCLES
+#error makeflag timer_cycles=1 required
+#endif
+
+extern "C" {
+	void asm_save_toc();
+	void asm_load_toc();
+}
+
+volatile bool __attribute__((section(".text"))) have_state = false;
+uint16_t i = 0;
+
+void restore_state()
+{
+	if (!have_state) {
+		return;
+	}
+	asm_load_toc();
+}
+
+void save_state()
+{
+	asm_save_toc();
+	have_state = true;
+}
+
+void loop(void)
+{
+	gpio.led_toggle(1);
+	kout << dec << i << endl;
+	i++;
+	if (i == 5) {
+		save_state();
+	}
+	if (i == 10) {
+		restore_state();
+	}
+}
+
+int main(void)
+{
+	arch.setup();
+	gpio.setup();
+	kout.setup();
+
+	restore_state();
+
+	gpio.led_on(0);
+	kout << "Hello, World!" << endl;
+	kout << "Test, World!" << endl;
+	kout << dec << uptime.get_cycles() << endl;
+	kout << dec << uptime.get_cycles() << endl;
+	kout << dec << uptime.get_cycles() << endl;
+	kout << dec << uptime.get_cycles() << endl;
+
+	arch.idle_loop();
+
+	return 0;
+}