diff --git a/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp b/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
index 20c360f519886db99a1a46167786dde94a02f1db..a4001f67d1747ec6f8fc1da708e018c3010b246e 100644
--- a/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
+++ b/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp
@@ -59,6 +59,8 @@
#include "../../sd/cardreader.h"
#endif
+#define TEXT_MODE_LCD_WIDTH 16
+
#define BUFFER_WIDTH 256
#define BUFFER_HEIGHT 32
@@ -619,13 +621,12 @@ void ST7920_Lite_Status_Screen::draw_status_message() {
set_ddram_address(DDRAM_LINE_4);
begin_data();
#if ENABLED(STATUS_MESSAGE_SCROLLING)
-
uint8_t slen = utf8_strlen(str);
- if (slen <= LCD_WIDTH) {
+ if (slen <= TEXT_MODE_LCD_WIDTH) {
// String fits the LCD, so just print it
write_str(str);
- while (slen < LCD_WIDTH) { write_byte(' '); ++slen; }
+ while (slen < TEXT_MODE_LCD_WIDTH) { write_byte(' '); ++slen; }
}
else {
// String is larger than the available space in screen.
@@ -634,12 +635,12 @@ void ST7920_Lite_Status_Screen::draw_status_message() {
// and the string remaining length
uint8_t rlen;
const char *stat = ui.status_and_len(rlen);
- write_str(stat, LCD_WIDTH);
+ write_str(stat, TEXT_MODE_LCD_WIDTH);
// If the remaining string doesn't completely fill the screen
- if (rlen < LCD_WIDTH) {
+ if (rlen < TEXT_MODE_LCD_WIDTH) {
write_byte('.'); // Always at 1+ spaces left, draw a dot
- uint8_t chars = LCD_WIDTH - rlen; // Amount of space left in characters
+ uint8_t chars = TEXT_MODE_LCD_WIDTH - rlen; // Amount of space left in characters
if (--chars) { // Draw a second dot if there's space
write_byte('.');
if (--chars) write_str(str, chars); // Print a second copy of the message
@@ -651,8 +652,8 @@ void ST7920_Lite_Status_Screen::draw_status_message() {
#else
uint8_t slen = utf8_strlen(str);
- write_str(str, LCD_WIDTH);
- for (; slen < LCD_WIDTH; ++slen) write_byte(' ');
+ write_str(str, TEXT_MODE_LCD_WIDTH);
+ for (; slen < TEXT_MODE_LCD_WIDTH; ++slen) write_byte(' ');
#endif
}
@@ -760,7 +761,8 @@ bool ST7920_Lite_Status_Screen::position_changed() {
bool ST7920_Lite_Status_Screen::status_changed() {
uint8_t checksum = 0;
for (const char *p = ui.status_message; *p; p++) checksum ^= *p;
- static uint8_t last_checksum = 0, changed = last_checksum != checksum;
+ static uint8_t last_checksum = 0;
+ bool changed = last_checksum != checksum;
if (changed) last_checksum = checksum;
return changed;
}
@@ -805,7 +807,7 @@ void ST7920_Lite_Status_Screen::update_status_or_position(bool forceUpdate) {
}
#if !STATUS_EXPIRE_SECONDS
#if ENABLED(STATUS_MESSAGE_SCROLLING)
- else
+ else if (blink_changed())
draw_status_message();
#endif
#else