Merge pull request #5118 from thinkyhead/rc_expanded_M43

Enhancements to M43 pins debugging

Marlin/Marlin_main.cpp

@@ -148,6 +148,7 @@
  *        The '#' is necessary when calling from within sd files, as it stops buffer prereading
  * M33  - Get the longname version of a path. (Requires LONG_FILENAME_HOST_SUPPORT)
  * M42  - Change pin status via gcode: M42 P<pin> S<value>. LED pin assumed if P is omitted.
+ * M43  - Monitor pins & report changes - report active pins
  * M48  - Measure Z Probe repeatability: M48 P<points> X<pos> Y<pos> V<level> E<engage> L<legs>. (Requires Z_MIN_PROBE_REPEATABILITY_TEST)
  * M75  - Start the print job timer.
  * M76  - Pause the print job timer.
@@ -4675,20 +4676,43 @@ inline void gcode_M42() {
   /**
    * M43: Pin report and debug
    *
-   *      P<pin> Will read/watch a single pin
+   *      E<bool> Enable / disable background endstop monitoring
-   *      W      Watch pins for changes until reboot
+   *               - Machine continues to operate
+   *               - Reports changes to endstops
+   *               - Toggles LED when an endstop changes
+   *
+   *   or
+   *
+   *      P<pin>  Pin to read or watch. If omitted, read/watch all pins.
+   *      W<bool> Watch pins -reporting changes- until reset, click, or M108.
+   *      I<bool> Flag to ignore Marlin's pin protection.
+   *
    */
   inline void gcode_M43() {
-    int first_pin = 0, last_pin = DIO_COUNT - 1;
+
+    // Enable or disable endstop monitoring
+    if (code_seen('E')) {
+      endstop_monitor_flag = code_value_bool();
+      SERIAL_PROTOCOLPGM("endstop monitor ");
+      SERIAL_PROTOCOL(endstop_monitor_flag ? "en" : "dis");
+      SERIAL_PROTOCOLLNPGM("abled");
+      return;
+    }
+
+    // Get the range of pins to test or watch
+    int first_pin = 0, last_pin = NUM_DIGITAL_PINS - 1;
     if (code_seen('P')) {
       first_pin = last_pin = code_value_byte();
-      if (first_pin > DIO_COUNT - 1) return;
+      if (first_pin > NUM_DIGITAL_PINS - 1) return;
     }
 
+    bool ignore_protection = code_seen('I') ? code_value_bool() : false;
+
+    // Watch until click, M108, or reset
     if (code_seen('W') && code_value_bool()) { // watch digital pins
       byte pin_state[last_pin - first_pin + 1];
       for (int8_t pin = first_pin; pin <= last_pin; pin++) {
-        if (pin_is_protected(pin)) continue;
+        if (pin_is_protected(pin) && !ignore_protection) continue;
         pinMode(pin, INPUT_PULLUP);
         // if (IS_ANALOG(pin))
         //   pin_state[pin - first_pin] = analogRead(pin - analogInputToDigitalPin(0)); // int16_t pin_state[...]
@@ -4720,10 +4744,12 @@ inline void gcode_M42() {
 
         safe_delay(500);
       }
+      return;
     }
-    else // single pins report
+
-      for (int8_t pin = first_pin; pin <= last_pin; pin++)
+    // Report current state of selected pin(s)
-        report_pin_state(pin);
+    for (uint8_t pin = first_pin; pin <= last_pin; pin++)
+      report_pin_state_extended(pin, ignore_protection);
   }
 
 #endif // PINS_DEBUGGING

Marlin/pins_A4JP.h

@@ -115,8 +115,8 @@
 #define HEATER_BED_PIN       3
 
 #define FAN_PIN              8
-#define FAN0_PIN             6
+#define FAN1_PIN             6
-#define FAN1_PIN             2
+#define FAN2_PIN             2
 
 //
 // Misc. Functions

Marlin/temperature.cpp

@@ -1393,6 +1393,87 @@ void Temperature::set_current_temp_raw() {
   temp_meas_ready = true;
 }
 
+#if ENABLED(PINS_DEBUGGING)
+  /**
+   * monitors endstops & Z probe for changes
+   *
+   * If a change is detected then the LED is toggled and
+   * a message is sent out the serial port
+   *
+   * Yes, we could miss a rapid back & forth change but
+   * that won't matter because this is all manual.
+   *
+   */
+  void endstop_monitor() {
+    static uint16_t old_endstop_bits_local = 0;
+    static uint8_t local_LED_status = 0;
+    uint16_t current_endstop_bits_local = 0;
+    #if HAS_X_MIN
+      if (READ(X_MIN_PIN)) SBI(current_endstop_bits_local, X_MIN);
+    #endif
+    #if HAS_X_MAX
+      if (READ(X_MAX_PIN)) SBI(current_endstop_bits_local, X_MAX);
+    #endif
+    #if HAS_Y_MIN
+      if (READ(Y_MIN_PIN)) SBI(current_endstop_bits_local, Y_MIN);
+    #endif
+    #if HAS_Y_MAX
+      if (READ(Y_MAX_PIN)) SBI(current_endstop_bits_local, Y_MAX);
+    #endif
+    #if HAS_Z_MIN
+      if (READ(Z_MIN_PIN)) SBI(current_endstop_bits_local, Z_MIN);
+    #endif
+    #if HAS_Z_MAX
+      if (READ(Z_MAX_PIN)) SBI(current_endstop_bits_local, Z_MAX);
+    #endif
+    #if HAS_Z_MIN_PROBE_PIN
+      if (READ(Z_MIN_PROBE_PIN)) SBI(current_endstop_bits_local, Z_MIN_PROBE);
+    #endif
+    #if HAS_Z2_MIN
+      if (READ(Z2_MIN_PIN)) SBI(current_endstop_bits_local, Z2_MIN);
+    #endif
+    #if HAS_Z2_MAX
+      if (READ(Z2_MAX_PIN)) SBI(current_endstop_bits_local, Z2_MAX);
+    #endif
+
+    uint16_t endstop_change = current_endstop_bits_local ^ old_endstop_bits_local;
+
+    if (endstop_change) {
+      #if HAS_X_MIN
+        if (TEST(endstop_change, X_MIN)) SERIAL_PROTOCOLPAIR("X_MIN:", !!TEST(current_endstop_bits_local, X_MIN));
+      #endif
+      #if HAS_X_MAX
+        if (TEST(endstop_change, X_MAX)) SERIAL_PROTOCOLPAIR("  X_MAX:", !!TEST(current_endstop_bits_local, X_MAX));
+      #endif
+      #if HAS_Y_MIN
+        if (TEST(endstop_change, Y_MIN)) SERIAL_PROTOCOLPAIR("  Y_MIN:", !!TEST(current_endstop_bits_local, Y_MIN));
+      #endif
+      #if HAS_Y_MAX
+        if (TEST(endstop_change, Y_MAX)) SERIAL_PROTOCOLPAIR("  Y_MAX:", !!TEST(current_endstop_bits_local, Y_MAX));
+      #endif
+      #if HAS_Z_MIN
+        if (TEST(endstop_change, Z_MIN)) SERIAL_PROTOCOLPAIR("  Z_MIN:", !!TEST(current_endstop_bits_local, Z_MIN));
+      #endif
+      #if HAS_Z_MAX
+        if (TEST(endstop_change, Z_MAX)) SERIAL_PROTOCOLPAIR("  Z_MAX:", !!TEST(current_endstop_bits_local, Z_MAX));
+      #endif
+      #if HAS_Z_MIN_PROBE_PIN
+        if (TEST(endstop_change, Z_MIN_PROBE)) SERIAL_PROTOCOLPAIR("  PROBE:", !!TEST(current_endstop_bits_local, Z_MIN_PROBE));
+      #endif
+      #if HAS_Z2_MIN
+        if (TEST(endstop_change, Z2_MIN)) SERIAL_PROTOCOLPAIR("  Z2_MIN:", !!TEST(current_endstop_bits_local, Z2_MIN));
+      #endif
+      #if HAS_Z2_MAX
+        if (TEST(endstop_change, Z2_MAX)) SERIAL_PROTOCOLPAIR("  Z2_MAX:", !!TEST(current_endstop_bits_local, Z2_MAX));
+      #endif
+      SERIAL_PROTOCOLPGM("\n\n");
+      analogWrite(LED_PIN, local_LED_status);
+      local_LED_status ^= 255;
+      old_endstop_bits_local = current_endstop_bits_local;
+    }
+  }
+#endif // PINS_DEBUGGING
+
 /**
  * Timer 0 is shared with millies so don't change the prescaler.
  *
@@ -1848,4 +1929,15 @@ void Temperature::isr() {
       }
     }
   #endif //BABYSTEPPING
+
+  #if ENABLED(PINS_DEBUGGING)
+    extern bool endstop_monitor_flag;
+    // run the endstop monitor at 15Hz
+    static uint8_t endstop_monitor_count = 16;  // offset this check from the others
+    if (endstop_monitor_flag) {
+      endstop_monitor_count += _BV(1);  //  15 Hz
+      endstop_monitor_count &= 0x7F;
+      if (!endstop_monitor_count) endstop_monitor();  // report changes in endstop status
+    }
+  #endif
 }