Add 50Hz monitor test option

hoglet67 · Oct 11, 2020 · edfcd2f · edfcd2f
1 parent 87c3039
commit edfcd2f
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Showing 3 changed files with 41 additions and 0 deletions.
diff --git a/src/osd.c b/src/osd.c
@@ -421,6 +421,7 @@ static void info_save_log(int line);
 static void info_credits(int line);
 static void info_reboot(int line);
 
+static void info_test_50hz(int line);
 static void rebuild_geometry_menu(menu_t *menu);
 static void rebuild_sampling_menu(menu_t *menu);
 static void rebuild_update_cpld_menu(menu_t *menu);
@@ -434,6 +435,7 @@ static info_menu_item_t save_log_ref         = { I_INFO, "Save Log & EDID",
 static info_menu_item_t credits_ref          = { I_INFO, "Credits",             info_credits};
 static info_menu_item_t reboot_ref           = { I_INFO, "Reboot",              info_reboot};
 
+static info_menu_item_t test_50hz_ref        = { I_INFO, "Test Monitor for 50Hz Support",  info_test_50hz};
 static back_menu_item_t back_ref             = { I_BACK, "Return"};
 static action_menu_item_t save_ref           = { I_SAVE, "Save Configuration"};
 static action_menu_item_t restore_ref        = { I_RESTORE, "Restore Default Configuration"};
@@ -733,6 +735,7 @@ static menu_t main_menu = {
       (base_menu_item_t *) &save_ref,
       (base_menu_item_t *) &restore_ref,
       (base_menu_item_t *) &cal_sampling_ref,
+      (base_menu_item_t *) &test_50hz_ref,
       (base_menu_item_t *) &resolution_ref,
       (base_menu_item_t *) &scaling_ref,
       (base_menu_item_t *) &frontend_ref,
@@ -1391,6 +1394,36 @@ static void info_save_log(int line) {
    osd_set(line++, 0, "Log.txt and EDID.bin saved to SD card");
 }
 
+static void info_test_50hz(int line) {
+static int old_50hz_state = 0;
+int current_50hz_state = get_50hz_state();
+if (old_50hz_state == 1 && current_50hz_state == 0) {
+    current_50hz_state = 1;
+}
+old_50hz_state = current_50hz_state;
+   switch(current_50hz_state) {
+      case 0:
+           osd_set(line++, 0, "50Hz support is already enabled");
+           osd_set(line++, 0, "");
+           osd_set(line++, 0, "If menu text is unstable, change");
+           osd_set(line++, 0, "Resolution to Default@60Hz");
+           osd_set(line++, 0, "to permanently disable 50Hz support");
+           break;
+      case 1:
+           set_force_genlock_range(GENLOCK_RANGE_FORCE_LOW);
+           set_status_message(" ");
+           osd_set(line++, 0, "50Hz support enabled until reset");
+           osd_set(line++, 0, "");
+           osd_set(line++, 0, "If you can see this message, change");
+           osd_set(line++, 0, "Resolution to Auto@50Hz-60Hz");
+           osd_set(line++, 0, "to permanently enable 50Hz support");
+           break;
+      default:
+           osd_set(line++, 0, "Unable to test: Source is not 50hz");
+           break;
+   }
+}
+
 static void info_reboot(int line) {
    reboot();
 }

diff --git a/src/rgb_to_hdmi.c b/src/rgb_to_hdmi.c
@@ -2508,6 +2508,13 @@ int get_lines_per_vsync() {
 
 }
 
+int get_50hz_state() {
+    if (source_vsync_freq_hz == 50) {
+       return vlock_limited;
+    }
+    return -1;
+}
+
 void set_autoswitch(int value) {
    // Prevent autoswitch (to mode 7) being accidentally with the Atom CPLD,
    // for example by selecting the BBC_Micro profile, as this results in

diff --git a/src/rgb_to_hdmi.h b/src/rgb_to_hdmi.h
@@ -54,6 +54,7 @@ int  get_autoswitch();
 void set_debug(int on);
 int  get_debug();
 int  get_lines_per_vsync();
+int  get_50hz_state();
 int show_detected_status(int line);
 void delay_in_arm_cycles_cpu_adjust(int cycles);
 void set_filtering(int filter);