Various general cleanups

Mostly from the L6470-oriented PR

Marlin/src/HAL/HAL_DUE/EepromEmulation_Due.cpp

     const uint8_t* c = (const uint8_t*) data;
     char buffer[80];
 
-    sprintf(buffer, "Page: %d (0x%04x)\n", page, page);
+    sprintf_P(buffer, PSTR("Page: %d (0x%04x)\n"), page, page);
     SERIAL_ECHO(buffer);
 
     char* p = &buffer[0];
     for (int i = 0; i< PageSize; ++i) {
-      if ((i & 0xF) == 0) p += sprintf(p,"%04x] ", i);
+      if ((i & 0xF) == 0) p += sprintf_P(p, PSTR("%04x] "), i);
 
-      p += sprintf(p," %02x", c[i]);
+      p += sprintf_P(p, PSTR(" %02x"), c[i]);
       if ((i & 0xF) == 0xF) {
         *p++ = '\n';
         *p = 0;

Marlin/src/HAL/HAL_DUE/pinsDebug.h

 #define GET_ARRAY_PIN(p) pin_array[p].pin
 #define VALID_PIN(pin) (pin >= 0 && pin < (int8_t)NUMBER_PINS_TOTAL ? 1 : 0)
 #define DIGITAL_PIN_TO_ANALOG_PIN(p) int(p - analogInputToDigitalPin(0))
-#define IS_ANALOG(P) (((P) >= analogInputToDigitalPin(0)) && ((P) <= analogInputToDigitalPin(NUM_ANALOG_INPUTS - 1)))
+#define IS_ANALOG(P) WITHIN(P, char(analogInputToDigitalPin(0)), char(analogInputToDigitalPin(NUM_ANALOG_INPUTS - 1)))
 #define pwm_status(pin) (((g_pinStatus[pin] & 0xF) == PIN_STATUS_PWM) && \
                         ((g_APinDescription[pin].ulPinAttribute & PIN_ATTR_PWM) == PIN_ATTR_PWM))
 #define MULTI_NAME_PAD 14 // space needed to be pretty if not first name assigned to a pin

Marlin/src/HAL/HAL_DUE/usb/sd_mmc_spi_mem.cpp

 
   #ifdef DEBUG_MMC
     char buffer[80];
-    sprintf(buffer, "SDRD: %d @ 0x%08x\n", nb_sector, addr);
+    sprintf_P(buffer, PSTR("SDRD: %d @ 0x%08x\n"), nb_sector, addr);
     SERIAL_ECHO_P(0, buffer);
   #endif
 
 
   #ifdef DEBUG_MMC
     char buffer[80];
-    sprintf(buffer, "SDWR: %d @ 0x%08x\n", nb_sector, addr);
+    sprintf_P(buffer, PSTR("SDWR: %d @ 0x%08x\n"), nb_sector, addr);
     SERIAL_ECHO_P(0, buffer);
   #endif
 

Marlin/src/HAL/HAL_TEENSY35_36/pinsDebug.h

 #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(0) && (P) <= analogInputToDigitalPin(9)) || ((P) >= analogInputToDigitalPin(12) && (P) <= analogInputToDigitalPin(20))
 
 void HAL_print_analog_pin(char buffer[], int8_t pin) {
-  if (pin <= 23)      sprintf(buffer, "(A%2d)  ", int(pin - 14));
-  else if (pin <= 39) sprintf(buffer, "(A%2d)  ", int(pin - 19));
+  if (pin <= 23)      sprintf_P(buffer, PSTR("(A%2d)  "), int(pin - 14));
+  else if (pin <= 39) sprintf_P(buffer, PSTR("(A%2d)  "), int(pin - 19));
 }
 
 void HAL_analog_pin_state(char buffer[], int8_t pin) {
-  if (pin <= 23)      sprintf(buffer, "Analog in =% 5d", analogRead(pin - 14));
-  else if (pin <= 39) sprintf(buffer, "Analog in =% 5d", analogRead(pin - 19));
+  if (pin <= 23)      sprintf_P(buffer, PSTR("Analog in =% 5d"), analogRead(pin - 14));
+  else if (pin <= 39) sprintf_P(buffer, PSTR("Analog in =% 5d"), analogRead(pin - 19));
 }
 
-#define PWM_PRINT(V) do{ sprintf(buffer, "PWM:  %4d", 22); SERIAL_ECHO(buffer); }while(0)
+#define PWM_PRINT(V) do{ sprintf_P(buffer, PSTR("PWM:  %4d"), 22); SERIAL_ECHO(buffer); }while(0)
 #define FTM_CASE(N,Z) \
   case FTM##N##_CH##Z##_PIN: \
     if (FTM##N##_C##Z##V) { \

Marlin/src/config/examples/3DFabXYZ/Migbot/Configuration_adv.h

 
   #define USER_DESC_1 "Test Print"
   #define USER_GCODE_1 "G28\nG29\nG26"
-/*
-  #define USER_DESC_1 "Home & UBL Info"
-  #define USER_GCODE_1 "G28\nG29 W"
 
+  /*
   #define USER_DESC_2 "Preheat for " PREHEAT_1_LABEL
   #define USER_GCODE_2 "M140 S" STRINGIFY(PREHEAT_1_TEMP_BED) "\nM104 S" STRINGIFY(PREHEAT_1_TEMP_HOTEND)
 
 
   #define USER_DESC_5 "Home & Info"
   #define USER_GCODE_5 "G28\nM503"
-*/  
+  */
 #endif
 
 /**

Marlin/src/core/macros.h

 #define NANOSECONDS_PER_CYCLE (1000000000.0 / F_CPU)
 
 // Remove compiler warning on an unused variable
-#if !defined(ARDUINO_ARCH_STM32) || defined(STM32GENERIC)
-  #define UNUSED(x) ((void)(x))
-#endif
+#define UNUSED(x) ((void)(x))
 
 // Macros to make a string from a macro
 #define STRINGIFY_(M) #M

Marlin/src/gcode/config/M302.cpp

   else if (!seen_S) {
     // Report current state
     SERIAL_ECHO_START();
-    SERIAL_ECHOPAIR("Cold extrudes are ", (thermalManager.allow_cold_extrude ? "en" : "dis"));
+    SERIAL_ECHOPGM("Cold extrudes are ");
+    serialprintPGM(thermalManager.allow_cold_extrude ? PSTR("en") : PSTR("dis"));
     SERIAL_ECHOPAIR("abled (min temp ", thermalManager.extrude_min_temp);
     SERIAL_ECHOLNPGM("C)");
   }

Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.cpp

 
   const uint32_t sectorSize = bulk.GetSectorSize(0);
   if (sectorSize != 512) {
-    SERIAL_ECHOLNPAIR("Expecting sector size of 512, got:", sectorSize);
+    SERIAL_ECHOLNPAIR("Expecting sector size of 512. Got: ", sectorSize);
     return false;
   }
 

Marlin/src/sd/usb_flashdrive/usb_host.cpp

 
   const uint8_t revision = regRd(rREVISION);
   if (revision == 0x00 || revision == 0xFF) {
-    SERIAL_ECHOLNPAIR("Revision register appears incorrect on MAX3421e initialization, got ", revision);
+    SERIAL_ECHOLNPAIR("Revision register appears incorrect on MAX3421e initialization. Got ", revision);
     return false;
   }
 

buildroot/share/atom/auto_build.py

 target_env = ''
 board_name = ''
 
+from datetime import datetime, date, time
 
 #########
 #  Python 2 error messages:
     write_to_screen_queue('\nBoard name: ' + board_name  + '\n')  # put build info at the bottom of the screen
     write_to_screen_queue('Build type: ' + build_type  + '\n')
     write_to_screen_queue('Environment used: ' + target_env  + '\n')
+    write_to_screen_queue(str(datetime.now()) + '\n')
+
 # end - run_PIO