From 60cb80bde54265e1fdf3cc8d21e74292d5f769db Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Mon, 15 Oct 2018 12:24:16 +0200
Subject: add timertest app, improve msp430 timer driver

---
 src/app/timertest/Makefile.inc |  3 +++
 src/app/timertest/main.cc      | 43 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 src/app/timertest/Makefile.inc
 create mode 100644 src/app/timertest/main.cc

(limited to 'src')

diff --git a/src/app/timertest/Makefile.inc b/src/app/timertest/Makefile.inc
new file mode 100644
index 0000000..9d375f1
--- /dev/null
+++ b/src/app/timertest/Makefile.inc
@@ -0,0 +1,3 @@
+loop ?= 1
+timer_s ?= 1
+arch_drivers += ,timer
diff --git a/src/app/timertest/main.cc b/src/app/timertest/main.cc
new file mode 100644
index 0000000..23f0b60
--- /dev/null
+++ b/src/app/timertest/main.cc
@@ -0,0 +1,43 @@
+#include "arch.h"
+#include "driver/gpio.h"
+#include "driver/stdout.h"
+#include "driver/timer.h"
+#include "driver/uptime.h"
+
+#ifndef F_TIMER
+#define F_TIMER 100000
+#endif
+
+volatile unsigned long int timer_val = 0;
+
+void loop(void)
+{
+	gpio.led_toggle(1);
+	kout << "Actual frequency: approx. " << timer_val << " Hz" << endl;
+	timer_val = 0;
+}
+
+int main(void)
+{
+	arch.setup();
+	gpio.setup();
+	kout.setup();
+#if F_TIMER > 999
+	timer.setup_khz(F_TIMER / 1000);
+#else
+	timer.setup_hz(F_TIMER);
+#endif
+	timer.start(1);
+
+	gpio.led_on(0);
+	kout << "Timer running at " << dec << F_TIMER << " Hz" << endl;
+
+	arch.idle_loop();
+
+	return 0;
+}
+
+ON_TIMER_INTERRUPT_head
+	gpio.led_toggle(0);
+	timer_val++;
+ON_TIMER_INTERRUPT_tail
-- 
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