PFW-1504 Add init for progress bar

In case we are running a retry, the firmware
should clear the old rendering before
starting on a new one

Change in memory:
Flash: +6 bytes
SRAM: 0 bytes

Firmware/mmu2.cpp

@@ -240,7 +240,6 @@ bool MMU2::VerifyFilamentEnteredPTFE() {
 
     uint8_t fsensorState = 0;
     uint8_t fsensorStateLCD = 0;
-    uint8_t fsensor_pixel = 0;
     // MMU has finished its load, push the filament further by some defined constant length
     // If the filament sensor reads 0 at any moment, then report FAILURE
 
@@ -248,6 +247,8 @@ bool MMU2::VerifyFilamentEnteredPTFE() {
     const float length_step_mm = 2 * (delta_mm) / (LCD_WIDTH + 1);
     float last_position = planner_get_machine_position_E_mm();
 
+    TryLoadUnloadProgressbarInit();
+
     MoveE(delta_mm, MMU2_VERIFY_LOAD_TO_NOZZLE_FEED_RATE);
     MoveE(-delta_mm, MMU2_VERIFY_LOAD_TO_NOZZLE_FEED_RATE);
 
@@ -259,8 +260,7 @@ bool MMU2::VerifyFilamentEnteredPTFE() {
 
         if ((fabs(planner_get_machine_position_E_mm() - last_position)) > length_step_mm) {
             last_position = planner_get_machine_position_E_mm(); // Reset
-            if (fsensor_pixel > 19) fsensor_pixel = 19;
-            TryLoadUnloadProgressbar(fsensor_pixel++, 3, fsensorStateLCD);
+            TryLoadUnloadProgressbar(fsensorStateLCD);
             fsensorStateLCD = 0;      // Clear temporary bit
         }
         safe_delay_keep_alive(0);

Firmware/mmu2_reporting.cpp

@@ -289,8 +289,17 @@ void ReportProgressHook(CommandInProgress cip, uint16_t ec) {
     }
 }
 
-void TryLoadUnloadProgressbar(uint8_t column, uint8_t row, bool sensorState) {
-    lcd_putc_at(column, row, sensorState ? '_' : LCD_STR_SOLID_BLOCK[0]); // Place character
+void TryLoadUnloadProgressbarInit() {
+    // Clear the status line
+    lcd_set_cursor(0, 3);
+    lcd_space(LCD_WIDTH);
+
+    // Reset cursor position
+    lcd_set_cursor(0, 3);
+}
+
+void TryLoadUnloadProgressbar(bool sensorState) {
+    lcd_putc(sensorState ? '_' : LCD_STR_SOLID_BLOCK[0]); // Place character
     lcd_reset_status_message_timeout();
 }
 

Firmware/mmu2_reporting.h

@@ -32,7 +32,12 @@ void ReportErrorHook(CommandInProgress cip, uint16_t ec, uint8_t es);
 /// Called when the MMU sends operation progress update
 void ReportProgressHook(CommandInProgress cip, uint16_t ec);
 
-void TryLoadUnloadProgressbar(uint8_t column, uint8_t row, bool sensorState);
+/// @brief Clear the status line and setup the LCD cursor
+void TryLoadUnloadProgressbarInit();
+
+/// @brief Add one block to the progress bar
+/// @param sensorState if true, filament is not present, else filament is present. This controls which character to render
+void TryLoadUnloadProgressbar(bool sensorState);
 
 /// Remders the sensor status line. Also used by the "resume temperature" screen.
 void ReportErrorHookDynamicRender();