✨ MAX7219_REINIT_ON_POWERUP (#26163)

Marlin/Configuration_adv.h

@@ -4308,6 +4308,7 @@
                                           // See class CodeProfiler.
   //#define MAX7219_DEBUG_MULTISTEPPING 6 // Show multi-stepping 1 to 128 on this LED matrix row.
   //#define MAX7219_DEBUG_SLOWDOWN      6 // Count (mod 16) how many times SLOWDOWN has reduced print speed.
+  //#define MAX7219_REINIT_ON_POWERUP     // Re-initialize MAX7129 when power supply turns on
 #endif
 
 /**

Marlin/src/feature/max7219.cpp

@@ -72,6 +72,26 @@
   uint16_t CodeProfiler::call_count = 0;
 #endif
 
+#if defined(MAX7219_DEBUG_PLANNER_HEAD) && defined(MAX7219_DEBUG_PLANNER_TAIL) && MAX7219_DEBUG_PLANNER_HEAD == MAX7219_DEBUG_PLANNER_TAIL
+  static int16_t last_head_cnt = 0xF, last_tail_cnt = 0xF;
+#else
+  #ifdef MAX7219_DEBUG_PLANNER_HEAD
+    static int16_t last_head_cnt = 0x1;
+  #endif
+  #ifdef MAX7219_DEBUG_PLANNER_TAIL
+    static int16_t last_tail_cnt = 0x1;
+  #endif
+#endif
+#ifdef MAX7219_DEBUG_PLANNER_QUEUE
+  static int16_t last_depth = 0;
+#endif
+#ifdef MAX7219_DEBUG_PROFILE
+  static uint8_t last_time_fraction = 0;
+#endif
+#ifdef MAX7219_DEBUG_MULTISTEPPING
+  static uint8_t last_multistepping = 0;
+#endif
+
 Max7219 max7219;
 
 uint8_t Max7219::led_line[MAX7219_LINES]; // = { 0 };
@@ -550,6 +570,29 @@ void Max7219::init() {
   #if MAX7219_INIT_TEST
     start_test_pattern();
   #endif
+
+  #ifdef MAX7219_REINIT_ON_POWERUP
+    #if defined(MAX7219_DEBUG_PLANNER_HEAD) && defined(MAX7219_DEBUG_PLANNER_TAIL) && MAX7219_DEBUG_PLANNER_HEAD == MAX7219_DEBUG_PLANNER_TAIL
+      last_head_cnt = 0xF;
+      last_tail_cnt = 0xF;
+    #else
+      #ifdef MAX7219_DEBUG_PLANNER_HEAD
+        last_head_cnt = 0x1;
+      #endif
+      #ifdef MAX7219_DEBUG_PLANNER_TAIL
+        last_tail_cnt = 0x1;
+      #endif
+    #endif
+    #ifdef MAX7219_DEBUG_PLANNER_QUEUE
+      last_depth = 0;
+    #endif
+    #ifdef MAX7219_DEBUG_PROFILE
+      last_time_fraction = 0;
+    #endif
+    #ifdef MAX7219_DEBUG_MULTISTEPPING
+      last_multistepping = 0;
+    #endif
+  #endif
 }
 
 /**
@@ -676,8 +719,6 @@ void Max7219::idle_tasks() {
 
   #if defined(MAX7219_DEBUG_PLANNER_HEAD) && defined(MAX7219_DEBUG_PLANNER_TAIL) && MAX7219_DEBUG_PLANNER_HEAD == MAX7219_DEBUG_PLANNER_TAIL
 
-    static int16_t last_head_cnt = 0xF, last_tail_cnt = 0xF;
-
     if (last_head_cnt != head || last_tail_cnt != tail) {
       range16(MAX7219_DEBUG_PLANNER_HEAD, last_tail_cnt, tail, last_head_cnt, head, &row_change_mask);
       last_head_cnt = head;
@@ -687,7 +728,6 @@ void Max7219::idle_tasks() {
   #else
 
     #ifdef MAX7219_DEBUG_PLANNER_HEAD
-      static int16_t last_head_cnt = 0x1;
       if (last_head_cnt != head) {
         mark16(MAX7219_DEBUG_PLANNER_HEAD, last_head_cnt, head, &row_change_mask);
         last_head_cnt = head;
@@ -695,7 +735,6 @@ void Max7219::idle_tasks() {
     #endif
 
     #ifdef MAX7219_DEBUG_PLANNER_TAIL
-      static int16_t last_tail_cnt = 0x1;
       if (last_tail_cnt != tail) {
         mark16(MAX7219_DEBUG_PLANNER_TAIL, last_tail_cnt, tail, &row_change_mask);
         last_tail_cnt = tail;
@@ -714,7 +753,6 @@ void Max7219::idle_tasks() {
   #endif
 
   #ifdef MAX7219_DEBUG_PROFILE
-    static uint8_t last_time_fraction = 0;
     const uint8_t current_time_fraction = (uint16_t(CodeProfiler::get_time_fraction()) * MAX7219_NUMBER_UNITS + 8) / 16;
     if (current_time_fraction != last_time_fraction) {
       quantity(MAX7219_DEBUG_PROFILE, last_time_fraction, current_time_fraction, &row_change_mask);

Marlin/src/feature/power.cpp

@@ -34,6 +34,10 @@
 #include "../module/temperature.h"
 #include "../MarlinCore.h"
 
+#if ENABLED(MAX7219_REINIT_ON_POWERUP)
+  #include "max7219.h"
+#endif
+
 #if ENABLED(PS_OFF_SOUND)
   #include "../libs/buzzer.h"
 #endif
@@ -100,6 +104,9 @@ void Power::power_on() {
   safe_delay(PSU_POWERUP_DELAY);
 
   restore_stepper_drivers();
+
+  TERN_(MAX7219_REINIT_ON_POWERUP, max7219.init());
+
   TERN_(HAS_TRINAMIC_CONFIG, safe_delay(PSU_POWERUP_DELAY));
 
   #ifdef PSU_POWERUP_GCODE

buildroot/tests/DUE

@@ -27,7 +27,7 @@ opt_enable S_CURVE_ACCELERATION EEPROM_SETTINGS GCODE_MACROS \
            FWRETRACT ARC_SUPPORT ARC_P_CIRCLES CNC_WORKSPACE_PLANES CNC_COORDINATE_SYSTEMS \
            PSU_CONTROL AUTO_POWER_CONTROL E_DUAL_STEPPER_DRIVERS \
            PIDTEMPBED SLOW_PWM_HEATERS THERMAL_PROTECTION_CHAMBER \
-           PINS_DEBUGGING MAX7219_DEBUG M114_DETAIL \
+           PINS_DEBUGGING MAX7219_DEBUG M114_DETAIL MAX7219_REINIT_ON_POWERUP \
            EXTENSIBLE_UI
 opt_add EXTUI_EXAMPLE
 exec_test $1 $2 "RAMPS4DUE_EFB with ABL (Bilinear), ExtUI, S-Curve, many options." "$3"