fixed signal generator input data streaming

2 files changed, 13 insertions, 1 deletions

diff --git a/source/periph/dac.cpp b/source/periph/dac.cpp
index 1ff8867..35c2908 100644
--- a/source/periph/dac.cpp
+++ b/source/periph/dac.cpp
@@ -61,7 +61,18 @@ void DAC::start(int channel, dacsample_t *buffer, size_t count)
 
 int DAC::sigGenWantsMore()
 {
-    return dacIsDone;
+    if (dacIsDone != -1) {
+        int tmp = dacIsDone;
+        dacIsDone = -1;
+        return tmp;
+    } else {
+        return -1;
+    }
+}
+
+int DAC::isSigGenRunning()
+{
+    return m_driver[1]->state == DAC_ACTIVE;
 }
 
 void DAC::stop(int channel)
diff --git a/source/periph/dac.hpp b/source/periph/dac.hpp
index 4360c26..7250a52 100644
--- a/source/periph/dac.hpp
+++ b/source/periph/dac.hpp
@@ -24,6 +24,7 @@ public:
     static void stop(int channel);
 
     static int sigGenWantsMore();
+    static int isSigGenRunning();
 
 private:
     static DACDriver *m_driver[2];