From 1a15e5aa0815c5c672ea66fa8369a97a88c85e7b Mon Sep 17 00:00:00 2001
From: Nicholas Sherlock <n.sherlock@gmail.com>
Date: Sun, 30 Aug 2015 21:42:24 +1200
Subject: [PATCH] Blackbox: Fix slow frames were not logged when logging rate
 was 1/32

---
 src/main/blackbox/blackbox.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/main/blackbox/blackbox.c b/src/main/blackbox/blackbox.c
index e1800d6621..2f7ac51747 100644
--- a/src/main/blackbox/blackbox.c
+++ b/src/main/blackbox/blackbox.c
@@ -357,6 +357,10 @@ static blackboxMainState_t* blackboxHistory[3];
 
 static bool blackboxModeActivationConditionPresent = false;
 
+static bool blackboxIsOnlyLoggingIntraframes() {
+    return masterConfig.blackbox_rate_num == 1 && masterConfig.blackbox_rate_denom == 32;
+}
+
 static bool testBlackboxConditionUncached(FlightLogFieldCondition condition)
 {
     switch (condition) {
@@ -1221,9 +1225,9 @@ static void blackboxLogIteration()
     if (blackboxShouldLogIFrame()) {
         /*
          * Don't log a slow frame if the slow data didn't change ("I" frames are already large enough without adding
-         * an additional item to write at the same time)
+         * an additional item to write at the same time). Unless we're *only* logging "I" frames, then we have no choice.
          */
-        writeSlowFrameIfNeeded(false);
+        writeSlowFrameIfNeeded(blackboxIsOnlyLoggingIntraframes());
 
         loadMainState();
         writeIntraframe();