From 701b344471fe5e0b90d95e1ac2c3c9525bb7dcfb Mon Sep 17 00:00:00 2001
From: Daniel Friesel <daniel.friesel@uos.de>
Date: Mon, 13 Jul 2020 10:53:46 +0200
Subject: Run MSP430FR benchmarks at 8 MHz; support sleep > 500 ms for
 energytrace

---
 bin/generate-dfa-benchmark.py | 17 +++++++----------
 lib/runner.py                 | 17 +++++++++++++++++
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/bin/generate-dfa-benchmark.py b/bin/generate-dfa-benchmark.py
index 1410c28..2c53d9f 100755
--- a/bin/generate-dfa-benchmark.py
+++ b/bin/generate-dfa-benchmark.py
@@ -223,17 +223,11 @@ def benchmark_from_runs(
                     )
             elif opt["sleep"]:
                 if "energytrace" in opt:
-                    outbuf.write(
-                        "arch.sleep_ms({:d}); // {}\n".format(
-                            opt["sleep"], transition.destination.name
-                        )
-                    )
+                    outbuf.write(f"// -> {transition.destination.name}\n")
+                    outbuf.write(runner.sleep_ms(opt["sleep"], opt["arch"]))
                 else:
-                    outbuf.write(
-                        "arch.delay_ms({:d}); // {}\n".format(
-                            opt["sleep"], transition.destination.name
-                        )
-                    )
+                    outbuf.write(f"// -> {transition.destination.name}\n")
+                    outbuf.write("arch.delay_ms({:d});\n".format(opt["sleep"]))
 
         outbuf.write(harness.stop_run(num_traces))
         if dummy:
@@ -597,6 +591,9 @@ if __name__ == "__main__":
     if run_flags is None:
         run_flags = opt["run"].split()
 
+    if "msp430fr" in opt["arch"]:
+        run_flags.append("cpu_freq=8000000")
+
     runs = list(
         pta.dfs(
             opt["depth"],
diff --git a/lib/runner.py b/lib/runner.py
index aeb8600..77b7c68 100644
--- a/lib/runner.py
+++ b/lib/runner.py
@@ -405,6 +405,23 @@ def get_counter_limits(arch: str) -> tuple:
     raise RuntimeError("Did not find Counter Overflow limits")
 
 
+def sleep_ms(duration: int, arch: str, cpu_freq: int = None) -> str:
+    max_sleep = None
+    if "msp430fr" in arch:
+        if cpu_freq is not None and cpu_freq > 8000000:
+            max_sleep = 250
+        else:
+            max_sleep = 500
+    if max_sleep is not None and duration > max_sleep:
+        sub_sleep_count = duration // max_sleep
+        tail_sleep = duration % max_sleep
+        ret = f"for (unsigned char i = 0; i < {sub_sleep_count}; i++) {{ arch.sleep_ms({max_sleep}); }}\n"
+        if tail_sleep > 0:
+            ret += f"arch.sleep_ms({tail_sleep});\n"
+        return ret
+    return "arch.sleep_ms({duration});\n"
+
+
 def get_counter_limits_us(arch: str) -> tuple:
     """Return duration of one counter step and one counter overflow in us."""
     cpu_freq = 0
-- 
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