Merge pull request #2895 from betaflight/spracingf3-osd

CF/BF - SPRacingF3 Add OSD over MSP for SPRacingF3OSD compatibility

src/main/io/displayport_max7456.c

@@ -46,7 +46,7 @@ static int grab(displayPort_t *displayPort)
     UNUSED(displayPort);
 #ifdef OSD
     osdResetAlarms();
-    refreshTimeout = 0;
+    resumeRefreshAt = 0;
 #endif
 
     return 0;

src/main/io/displayport_msp.c

@@ -54,7 +54,9 @@ static int heartbeat(displayPort_t *displayPort)
 {
     uint8_t subcmd[] = { 0 };
 
-    // ensure display is not released by MW OSD software
+    // heartbeat is used to:
+    // a) ensure display is not released by MW OSD software
+    // b) prevent OSD Slave boards from displaying a 'disconnected' status.
     return output(displayPort, MSP_DISPLAYPORT, subcmd, sizeof(subcmd));
 }
 

src/main/io/osd.c

@@ -127,8 +127,8 @@ typedef struct statistic_s {
 
 static statistic_t stats;
 
-uint16_t refreshTimeout = 0;
-#define REFRESH_1S    12  // FIXME dependant on how frequently the task is scheduled
+uint32_t resumeRefreshAt = 0;
+#define REFRESH_1S    1000 * 1000
 
 static uint8_t armState;
 
@@ -621,7 +621,7 @@ void osdInit(displayPort_t *osdDisplayPortToUse)
 
     displayResync(osdDisplayPort);
 
-    refreshTimeout = 4 * REFRESH_1S;
+    resumeRefreshAt = micros() + (4 * REFRESH_1S);
 }
 
 void osdUpdateAlarms(void)
@@ -803,17 +803,12 @@ static void osdShowStats(void)
         displayWrite(osdDisplayPort, 22, top++, buff);
     }
 #endif
-
-    refreshTimeout = 60 * REFRESH_1S;
 }
 
-// called when motors armed
-static void osdArmMotors(void)
+static void osdShowArmed(void)
 {
     displayClearScreen(osdDisplayPort);
     displayWrite(osdDisplayPort, 12, 7, "ARMED");
-    refreshTimeout = REFRESH_1S / 2;
-    osdResetStats();
 }
 
 static void osdRefresh(timeUs_t currentTimeUs)
@@ -823,10 +818,14 @@ static void osdRefresh(timeUs_t currentTimeUs)
 
     // detect arm/disarm
     if (armState != ARMING_FLAG(ARMED)) {
-        if (ARMING_FLAG(ARMED))
-            osdArmMotors(); // reset statistic etc
-        else
-            osdShowStats(); // show statistic
+        if (ARMING_FLAG(ARMED)) {
+            osdResetStats();
+            osdShowArmed();
+            resumeRefreshAt = currentTimeUs + (REFRESH_1S / 2);
+        } else {
+            osdShowStats();
+            resumeRefreshAt = currentTimeUs + (60 * REFRESH_1S);
+        }
 
         armState = ARMING_FLAG(ARMED);
     }
@@ -840,13 +839,19 @@ static void osdRefresh(timeUs_t currentTimeUs)
         lastSec = sec;
     }
 
-    if (refreshTimeout) {
-        if (IS_HI(THROTTLE) || IS_HI(PITCH)) // hide statistics
-            refreshTimeout = 1;
-        refreshTimeout--;
-        if (!refreshTimeout)
+    if (resumeRefreshAt) {
+        if (cmp32(currentTimeUs, resumeRefreshAt) < 0) {
+            // in timeout period, check sticks for activity to resume display.
+            if (IS_HI(THROTTLE) || IS_HI(PITCH)) {
+                resumeRefreshAt = 0;
+            }
+
+            displayHeartbeat(osdDisplayPort);
+            return;
+        } else {
             displayClearScreen(osdDisplayPort);
-        return;
+            resumeRefreshAt = 0;
+        }
     }
 
     blinkState = (currentTimeUs / 200000) % 2;
@@ -855,7 +860,7 @@ static void osdRefresh(timeUs_t currentTimeUs)
     if (!displayIsGrabbed(osdDisplayPort)) {
         osdUpdateAlarms();
         osdDrawElements();
-        displayHeartbeat(osdDisplayPort); // heartbeat to stop Minim OSD going back into native mode
+        displayHeartbeat(osdDisplayPort);
 #ifdef OSD_CALLS_CMS
     } else {
         cmsUpdate(currentTimeUs);
@@ -881,8 +886,18 @@ void osdUpdate(timeUs_t currentTimeUs)
 #ifdef USE_MAX7456
 #define DRAW_FREQ_DENOM 5
 #else
-#define DRAW_FREQ_DENOM 10 // MWOSD @ 115200 baud
+#define DRAW_FREQ_DENOM 10 // MWOSD @ 115200 baud (
 #endif
+
+#ifdef USE_SLOW_MSP_DISPLAYPORT_RATE_WHEN_UNARMED
+    static uint32_t idlecounter = 0;
+    if (!ARMING_FLAG(ARMED)) {
+        if (idlecounter++ % 4 != 0) {
+            return;
+        }
+    }
+#endif
+
     if (counter++ % DRAW_FREQ_DENOM == 0) {
         osdRefresh(currentTimeUs);
     } else { // rest of time redraw screen 10 chars per idle so it doesn't lock the main idle

src/main/io/osd.h

@@ -73,7 +73,7 @@ typedef struct osdConfig_s {
     osd_unit_e units;
 } osdConfig_t;
 
-extern uint16_t refreshTimeout;
+extern uint32_t resumeRefreshAt;
 
 PG_DECLARE(osdConfig_t, osdConfig);
 

src/main/target/SPRACINGF3/target.h

@@ -171,6 +171,10 @@
 #define CURRENT_METER_ADC_PIN   PA5
 #define RSSI_ADC_PIN            PB2
 
+#define OSD
+#define USE_OSD_OVER_MSP_DISPLAYPORT
+#define USE_SLOW_MSP_DISPLAYPORT_RATE_WHEN_UNARMED
+
 #define USE_ESC_SENSOR
 #define REMAP_TIM17_DMA