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Optimize LCD string/char printing

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This commit is contained in:
Scott Lahteine
2016-09-02 04:09:34 -05:00
parent 445d8215e4
commit f20b2b21eb
2 changed files with 48 additions and 50 deletions
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33
Marlin/ultralcd_impl_HD44780.h
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@@ -375,20 +375,15 @@ static void lcd_implementation_init(
static void lcd_implementation_clear() { lcd.clear(); }
/* Arduino < 1.0.0 is missing a function to print PROGMEM strings, so we need to implement our own */
char lcd_printPGM(const char* str) {
char c, n = 0;
while ((c = pgm_read_byte(str++))) n += charset_mapper(c);
return n;
void lcd_printPGM(const char *str) {
for (; char c = pgm_read_byte(str); ++str) charset_mapper(c);
}
char lcd_print(const char* str) {
char c, n = 0;
unsigned char i = 0;
while ((c = str[i++])) n += charset_mapper(c);
return n;
void lcd_print(const char* str) {
for (uint8_t i = 0; char c = str[i]; ++i) charset_mapper(c);
}
unsigned lcd_print(char c) { return charset_mapper(c); }
void lcd_print(char c) { charset_mapper(c); }
#if ENABLED(SHOW_BOOTSCREEN)
@@ -556,11 +551,11 @@ FORCE_INLINE void _draw_axis_label(AxisEnum axis, const char *pstr, bool blink)
lcd_printPGM(pstr);
else {
if (!axis_homed[axis])
lcd_printPGM(PSTR("?"));
lcd.print('?');
else {
#if DISABLED(DISABLE_REDUCED_ACCURACY_WARNING)
if (!axis_known_position[axis])
lcd_printPGM(PSTR(" "));
lcd.print(' ');
else
#endif
lcd_printPGM(pstr);
@@ -694,7 +689,7 @@ static void lcd_implementation_status_screen() {
_draw_axis_label(X_AXIS, PSTR(MSG_X), blink);
lcd.print(ftostr4sign(current_position[X_AXIS]));
lcd_printPGM(PSTR(" "));
lcd.print(' ');
_draw_axis_label(Y_AXIS, PSTR(MSG_Y), blink);
lcd.print(ftostr4sign(current_position[Y_AXIS]));
@@ -803,11 +798,11 @@ static void lcd_implementation_status_screen() {
while (--pad >= 0) { lcd.print(' '); n--; }
}
while (n > 0 && (c = pgm_read_byte(pstr))) {
n -= lcd_print(c);
n -= charset_mapper(c);
pstr++;
}
if (valstr) while (n > 0 && (c = *valstr)) {
n -= lcd_print(c);
n -= charset_mapper(c);
valstr++;
}
while (n-- > 0) lcd.print(' ');
@@ -821,7 +816,7 @@ static void lcd_implementation_status_screen() {
lcd.setCursor(0, row);
lcd.print(sel ? pre_char : ' ');
while ((c = pgm_read_byte(pstr)) && n > 0) {
n -= lcd_print(c);
n -= charset_mapper(c);
pstr++;
}
while (n--) lcd.print(' ');
@@ -834,7 +829,7 @@ static void lcd_implementation_status_screen() {
lcd.setCursor(0, row);
lcd.print(sel ? pre_char : ' ');
while ((c = pgm_read_byte(pstr)) && n > 0) {
n -= lcd_print(c);
n -= charset_mapper(c);
pstr++;
}
lcd.print(':');
@@ -847,7 +842,7 @@ static void lcd_implementation_status_screen() {
lcd.setCursor(0, row);
lcd.print(sel ? pre_char : ' ');
while ((c = pgm_read_byte(pstr)) && n > 0) {
n -= lcd_print(c);
n -= charset_mapper(c);
pstr++;
}
lcd.print(':');
@@ -899,7 +894,7 @@ static void lcd_implementation_status_screen() {
longFilename[n] = '\0';
}
while ((c = *filename) && n > 0) {
n -= lcd_print(c);
n -= charset_mapper(c);
filename++;
}
while (n--) lcd.print(' ');