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MarlinFirmware/Marlin/src/lcd/dogm/status_screen_lite_ST7920.cpp

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/**
* Lightweight Status Screen for the RepRapDiscount Full
* Graphics Smart Controller (ST7920-based 128x64 LCD)
*
* (c) 2017 Aleph Objects, Inc.
*
* The code in this page is free software: you can
* redistribute it and/or modify it under the terms of the GNU
* General Public License (GNU GPL) as published by the Free Software
* Foundation, either version 3 of the License, or (at your option)
* any later version. The code is distributed WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
*/
/**
* Implementation of a Status Screen for the RepRapDiscount
* Full Graphics Smart Controller using native ST7920 commands
* instead of U8Glib.
*
* This alternative Status Screen makes use of the built-in character
* generation capabilities of the ST7920 to update the Status Screen
* with less SPI traffic and CPU use. In particular:
*
* - The fan and bed animations are handled using custom characters
* that are stored in CGRAM. This allows for the animation to be
* updated by writing a single character to the text-buffer (DDRAM).
*
* - All the information in the Status Screen is text that is written
* to DDRAM, so the work of generating the bitmaps is offloaded to
* the ST7920 rather than being render by U8Glib on the MCU.
*
* - The graphics buffer (GDRAM) is only used for static graphics
* elements (nozzle and feedrate bitmaps) and for the progress
* bar, so updates are sporadic.
*/
//
// status_screen_lite_ST7920.cpp
// Lightweight Status Screen for Graphical Display
//
#include "../../inc/MarlinConfigPre.h"
#if ENABLED(LIGHTWEIGHT_UI)
#include "status_screen_lite_ST7920.h"
#include "../marlinui.h"
#include "../fontutils.h"
#include "../lcdprint.h"
#include "../../libs/duration_t.h"
#include "../../module/motion.h"
#include "../../module/printcounter.h"
#include "../../module/temperature.h"
#if ENABLED(SDSUPPORT)
#include "../../sd/cardreader.h"
#endif
#if ENABLED(LCD_SHOW_E_TOTAL)
#include "../../MarlinCore.h" // for printingIsActive
#endif
#define TEXT_MODE_LCD_WIDTH 16
#define BUFFER_WIDTH 256
#define BUFFER_HEIGHT 32
#define DDRAM_LINE_1 0x00
#define DDRAM_LINE_2 0x10
#define DDRAM_LINE_3 0x08
#define DDRAM_LINE_4 0x18
ST7920_Lite_Status_Screen::st7920_state_t ST7920_Lite_Status_Screen::current_bits;
void ST7920_Lite_Status_Screen::cmd(const uint8_t cmd) {
if (!current_bits.synced || !current_bits.cmd) {
current_bits.synced = true;
current_bits.cmd = true;
sync_cmd();
}
write_byte(cmd);
}
void ST7920_Lite_Status_Screen::begin_data() {
if (!current_bits.synced || current_bits.cmd) {
current_bits.synced = true;
current_bits.cmd = false;
sync_dat();
}
}
void ST7920_Lite_Status_Screen::write_str(const char *str) {
while (*str) write_byte(*str++);
}
void ST7920_Lite_Status_Screen::write_str(const char *str, uint8_t len) {
while (*str && len--) write_byte(*str++);
}
void ST7920_Lite_Status_Screen::write_str_P(PGM_P const str) {
PGM_P p_str = (PGM_P)str;
while (char c = pgm_read_byte(p_str++)) write_byte(c);
}
void ST7920_Lite_Status_Screen::write_number(const int16_t value, const uint8_t digits/*=3*/) {
char str[7];
PGM_P fmt;
switch (digits) {
case 6: fmt = PSTR("%6d"); break;
case 5: fmt = PSTR("%5d"); break;
case 4: fmt = PSTR("%4d"); break;
case 3: fmt = PSTR("%3d"); break;
case 2: fmt = PSTR("%2d"); break;
case 1: fmt = PSTR("%1d"); break;
default: return;
}
sprintf_P(str, fmt, value);
write_str(str);
}
void ST7920_Lite_Status_Screen::display_status(const bool display_on, const bool cursor_on, const bool blink_on) {
extended_function_set(false);
cmd(0b00001000 |
(display_on ? 0b0100 : 0) |
(cursor_on ? 0b0010 : 0) |
(blink_on ? 0b0001 : 0)
);
}
// Sets the extended and graphics bits simultaneously, regardless of
// the current state. This is a helper function for extended_function_set()
// and graphics()
void ST7920_Lite_Status_Screen::_extended_function_set(const bool extended, const bool graphics) {
cmd( 0b00100000 |
(extended ? 0b00000100 : 0) |
(graphics ? 0b00000010 : 0)
);
current_bits.extended = extended;
current_bits.graphics = graphics;
}
void ST7920_Lite_Status_Screen::extended_function_set(const bool extended) {
if (extended != current_bits.extended)
_extended_function_set(extended, current_bits.graphics);
}
void ST7920_Lite_Status_Screen::graphics(const bool graphics) {
if (graphics != current_bits.graphics)
_extended_function_set(current_bits.extended, graphics);
}
void ST7920_Lite_Status_Screen::entry_mode_select(const bool ac_increase, const bool shift) {
extended_function_set(false);
cmd(0b00000100 |
(ac_increase ? 0b00000010 : 0) |
(shift ? 0b00000001 : 0)
);
}
// Sets the sa bit regardless of the current state. This is a helper
// function for scroll_or_addr_select()
void ST7920_Lite_Status_Screen::_scroll_or_addr_select(const bool sa) {
extended_function_set(true);
cmd(0b00000010 | (sa ? 0b00000001 : 0));
current_bits.sa = sa;
}
void ST7920_Lite_Status_Screen::scroll_or_addr_select(const bool sa) {
if (sa != current_bits.sa)
_scroll_or_addr_select(sa);
}
void ST7920_Lite_Status_Screen::set_ddram_address(const uint8_t addr) {
extended_function_set(false);
cmd(0b10000000 | (addr & 0b00111111));
}
void ST7920_Lite_Status_Screen::set_cgram_address(const uint8_t addr) {
extended_function_set(false);
cmd(0b01000000 | (addr & 0b00111111));
}
void ST7920_Lite_Status_Screen::set_gdram_address(const uint8_t x, const uint8_t y) {
extended_function_set(true);
cmd(0b10000000 | (y & 0b01111111));
cmd(0b10000000 | (x & 0b00001111));
}
void ST7920_Lite_Status_Screen::clear() {
extended_function_set(false);
cmd(0x00000001);
delay(15); //delay for CGRAM clear
}
void ST7920_Lite_Status_Screen::home() {
extended_function_set(false);
cmd(0x00000010);
}
/* This fills the entire text buffer with spaces */
void ST7920_Lite_Status_Screen::clear_ddram() {
set_ddram_address(DDRAM_LINE_1);
begin_data();
for (uint8_t i = 64; i--;) write_byte(' ');
}
/* This fills the entire graphics buffer with zeros */
void ST7920_Lite_Status_Screen::clear_gdram() {
LOOP_L_N(y, BUFFER_HEIGHT) {
set_gdram_address(0, y);
begin_data();
for (uint8_t i = (BUFFER_WIDTH) / 16; i--;) write_word(0);
}
}
void ST7920_Lite_Status_Screen::load_cgram_icon(const uint16_t addr, const void *data) {
const uint16_t *p_word = (const uint16_t *)data;
set_cgram_address(addr);
begin_data();
for (uint8_t i = 16; i--;)
write_word(pgm_read_word(p_word++));
}
/**
* Draw an icon in GDRAM. Position specified in DDRAM
* coordinates. i.e., X from 1 to 8, Y from 1 to 4.
*/
void ST7920_Lite_Status_Screen::draw_gdram_icon(uint8_t x, uint8_t y, const void *data) {
const uint16_t *p_word = (const uint16_t *)data;
// Handle display folding
if (y > 1) y -= 2, x += 8;
for (int i = 0; i < 16; i++) {
set_gdram_address(x, i + y * 16);
begin_data();
write_word(pgm_read_word(p_word++));
}
}
/************************** ICON DEFINITIONS *************************************/
#define CGRAM_ICON_1_ADDR 0x00
#define CGRAM_ICON_2_ADDR 0x10
#define CGRAM_ICON_3_ADDR 0x20
#define CGRAM_ICON_4_ADDR 0x30
#define CGRAM_ICON_1_WORD 0x00
#define CGRAM_ICON_2_WORD 0x02
#define CGRAM_ICON_3_WORD 0x04
#define CGRAM_ICON_4_WORD 0x06
const uint8_t degree_symbol_y_top = 1;
PROGMEM const uint8_t degree_symbol[] = {
0b00110000,
0b01001000,
0b01001000,
0b00110000,
};
const uint16_t nozzle_icon[] PROGMEM = {
0b0000000000000000,
0b0000000000000000,
0b0000111111110000,
0b0001111111111000,
0b0001111111111000,
0b0001111111111000,
0b0000111111110000,
0b0000111111110000,
0b0001111111111000,
0b0001111111111000,
0b0001111111111000,
0b0000011111100000,
0b0000001111000000,
0b0000000110000000,
0b0000000000000000,
0b0000000000000000
};
const uint16_t bed_icon[] PROGMEM = {
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0111111111111110,
0b0111111111111110,
0b0110000000000110,
0b0000000000000000,
0b0000000000000000
};
const uint16_t heat1_icon[] PROGMEM = {
0b0000000000000000,
0b0010001000100000,
0b0001000100010000,
0b0000100010001000,
0b0000100010001000,
0b0001000100010000,
0b0010001000100000,
0b0010001000100000,
0b0001000100010000,
0b0000100010001000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000
};
const uint16_t heat2_icon[] PROGMEM = {
0b0000000000000000,
0b0000100010001000,
0b0000100010001000,
0b0001000100010000,
0b0010001000100000,
0b0010001000100000,
0b0001000100010000,
0b0000100010001000,
0b0000100010001000,
0b0001000100010000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000,
0b0000000000000000
};
const uint16_t fan1_icon[] PROGMEM = {
0b0000000000000000,
0b0111111111111110,
0b0111000000001110,
0b0110001111000110,
0b0100001111000010,
0b0100000110000010,
0b0101100000011010,
0b0101110110111010,
0b0101100000011010,
0b0100000110000010,
0b0100001111000010,
0b0110001111000110,
0b0111000000001110,
0b0111111111111110,
0b0000000000000000,
0b0000000000000000
};
const uint16_t fan2_icon[] PROGMEM = {
0b0000000000000000,
0b0111111111111110,
0b0111000000001110,
0b0110010000100110,
0b0100111001110010,
0b0101111001111010,
0b0100110000110010,
0b0100000110000010,
0b0100110000110010,
0b0101111001111010,
0b0100111001110010,
0b0110010000100110,
0b0111000000001110,
0b0111111111111110,
0b0000000000000000,
0b0000000000000000
};
const uint16_t feedrate_icon[] PROGMEM = {
0b0000000000000000,
0b0111111000000000,
0b0110000000000000,
0b0110000000000000,
0b0110000000000000,
0b0111111011111000,
0b0110000011001100,
0b0110000011001100,
0b0110000011001100,
0b0110000011111000,
0b0000000011001100,
0b0000000011001100,
0b0000000011001100,
0b0000000011001100,
0b0000000000000000,
0b0000000000000000
};
/************************** MAIN SCREEN *************************************/
/**
* The ST7920 has no degree character, so draw it to GDRAM.
* This function takes character position xy
* i.e., x is [0-15], while the y position is [0-3]
*/
void ST7920_Lite_Status_Screen::draw_degree_symbol(uint8_t x, uint8_t y, const bool draw) {
const uint8_t *p_bytes = degree_symbol;
// Handle display folding
if (y > 1) y -= 2, x += 16;
const bool oddChar = x & 1;
const uint8_t x_word = x >> 1,
y_top = degree_symbol_y_top,
y_bot = y_top + COUNT(degree_symbol);
LOOP_S_L_N(i, y_top, y_bot) {
uint8_t byte = pgm_read_byte(p_bytes++);
set_gdram_address(x_word, i + y * 16);
begin_data();
if (draw) {
write_byte(oddChar ? 0x00 : byte);
write_byte(oddChar ? byte : 0x00);
}
else
write_word(0x0000);
}
}
void ST7920_Lite_Status_Screen::draw_static_elements() {
scroll_or_addr_select(0);
// Load the animated bed and fan icons
load_cgram_icon(CGRAM_ICON_1_ADDR, heat1_icon);
load_cgram_icon(CGRAM_ICON_2_ADDR, heat2_icon);
load_cgram_icon(CGRAM_ICON_3_ADDR, fan1_icon);
load_cgram_icon(CGRAM_ICON_4_ADDR, fan2_icon);
// Draw the static icons in GDRAM
draw_gdram_icon(0, 0, nozzle_icon);
#if HAS_MULTI_HOTEND
draw_gdram_icon(0, 1, nozzle_icon);
draw_gdram_icon(0, 2, bed_icon);
#else
draw_gdram_icon(0, 1, bed_icon);
#endif
draw_gdram_icon(5, 1, feedrate_icon);
// Draw the initial fan icon
draw_fan_icon(false);
}
/**
* Although this is undocumented, the ST7920 allows the character
* data buffer (DDRAM) to be used in conjunction with the graphics
* bitmap buffer (CGRAM). The contents of the graphics buffer is
* XORed with the data from the character generator. This allows
* us to make the progess bar out of graphical data (the bar) and
* text data (the percentage).
*/
void ST7920_Lite_Status_Screen::draw_progress_bar(const uint8_t value) {
#if HOTENDS == 1
// If we have only one extruder, draw a long progress bar on the third line
constexpr uint8_t top = 1, // Top in pixels
bottom = 13, // Bottom in pixels
left = 12, // Left edge, in 16-bit words
width = 4; // Width of progress bar, in 16-bit words
#else
constexpr uint8_t top = 16 + 1,
bottom = 16 + 13,
left = 5,
width = 3;
#endif
const uint8_t char_pcnt = 100 / width; // How many percent does each 16-bit word represent?
// Draw the progress bar as a bitmap in CGRAM
LOOP_S_LE_N(y, top, bottom) {
set_gdram_address(left, y);
begin_data();
LOOP_L_N(x, width) {
uint16_t gfx_word = 0x0000;
if ((x + 1) * char_pcnt <= value)
gfx_word = 0xFFFF; // Draw completely filled bytes
else if ((x * char_pcnt) < value)
gfx_word = int(0x8000) >> (value % char_pcnt) * 16 / char_pcnt; // Draw partially filled bytes
// Draw the frame around the progress bar
if (y == top || y == bottom)
gfx_word = 0xFFFF; // Draw top/bottom border
else if (x == width - 1)
gfx_word |= 0x0001; // Draw right border
else if (x == 0)
gfx_word |= 0x8000; // Draw left border
write_word(gfx_word);
}
}
// Draw the percentage as text in DDRAM
#if HOTENDS == 1
set_ddram_address(DDRAM_LINE_3 + 4);
begin_data();
write_byte(' ');
#else
set_ddram_address(DDRAM_LINE_2 + left);
begin_data();
#endif
// Draw centered
if (value > 9) {
write_number(value, 4);
write_str_P(PSTR("% "));
}
else {
write_number(value, 3);
write_str_P(PSTR("% "));
}
}
void ST7920_Lite_Status_Screen::draw_fan_icon(const bool whichIcon) {
set_ddram_address(DDRAM_LINE_1 + 5);
begin_data();
write_word(whichIcon ? CGRAM_ICON_3_WORD : CGRAM_ICON_4_WORD);
}
void ST7920_Lite_Status_Screen::draw_heat_icon(const bool whichIcon, const bool heating) {
set_ddram_address(
#if HOTENDS == 1
DDRAM_LINE_2
#else
DDRAM_LINE_3
#endif
);
begin_data();
if (heating)
write_word(whichIcon ? CGRAM_ICON_1_WORD : CGRAM_ICON_2_WORD);
else {
write_byte(' ');
write_byte(' ');
}
}
#define FAR(a,b) (((a > b) ? (a-b) : (b-a)) > 2)
static struct {
bool E1_show_target : 1;
bool E2_show_target : 1;
#if ENABLED(HAS_HEATED_BED)
bool bed_show_target : 1;
#endif
} display_state = {
true, true, TERN_(HAS_HEATED_BED, true)
};
void ST7920_Lite_Status_Screen::draw_temps(uint8_t line, const int16_t temp, const int16_t target, bool showTarget, bool targetStateChange) {
switch (line) {
case 0: set_ddram_address(DDRAM_LINE_1 + 1); break;
case 1: set_ddram_address(DDRAM_LINE_2 + 1); break;
case 2: set_ddram_address(DDRAM_LINE_3 + 1); break;
case 3: set_ddram_address(DDRAM_LINE_3 + 1); break;
}
begin_data();
write_number(temp);
if (showTarget) {
write_byte('\x1A');
write_number(target);
};
if (targetStateChange) {
if (!showTarget) write_str_P(PSTR(" "));
draw_degree_symbol(5, line, !showTarget);
draw_degree_symbol(9, line, showTarget);
}
}
void ST7920_Lite_Status_Screen::draw_extruder_1_temp(const int16_t temp, const int16_t target, bool forceUpdate) {
const bool show_target = target && FAR(temp, target);
draw_temps(0, temp, target, show_target, display_state.E1_show_target != show_target || forceUpdate);
display_state.E1_show_target = show_target;
}
void ST7920_Lite_Status_Screen::draw_extruder_2_temp(const int16_t temp, const int16_t target, bool forceUpdate) {
const bool show_target = target && FAR(temp, target);
draw_temps(1, temp, target, show_target, display_state.E2_show_target != show_target || forceUpdate);
display_state.E2_show_target = show_target;
}
#if HAS_HEATED_BED
void ST7920_Lite_Status_Screen::draw_bed_temp(const int16_t temp, const int16_t target, bool forceUpdate) {
const bool show_target = target && FAR(temp, target);
draw_temps(TERN(HAS_MULTI_HOTEND, 2, 1), temp, target, show_target, display_state.bed_show_target != show_target || forceUpdate);
display_state.bed_show_target = show_target;
}
#endif
void ST7920_Lite_Status_Screen::draw_fan_speed(const uint8_t value) {
set_ddram_address(DDRAM_LINE_1 + 6);
begin_data();
write_number(value, 3);
write_byte('%');
}
void ST7920_Lite_Status_Screen::draw_print_time(const duration_t &elapsed, char suffix) {
#if HOTENDS == 1
set_ddram_address(DDRAM_LINE_3);
#else
set_ddram_address(DDRAM_LINE_3 + 5);
#endif
char str[7];
int str_length = elapsed.toDigital(str);
str[str_length++] = suffix;
begin_data();
write_str(str, str_length);
}
void ST7920_Lite_Status_Screen::draw_feedrate_percentage(const uint16_t percentage) {
// We only have enough room for the feedrate when
// we have one extruder
#if HOTENDS == 1
set_ddram_address(DDRAM_LINE_2 + 6);
begin_data();
write_number(percentage, 3);
write_byte('%');
#else
UNUSED(percentage);
#endif
}
void ST7920_Lite_Status_Screen::draw_status_message() {
const char *str = ui.status_message;
set_ddram_address(DDRAM_LINE_4);
begin_data();
#if ENABLED(STATUS_MESSAGE_SCROLLING)
uint8_t slen = utf8_strlen(str);
if (slen <= TEXT_MODE_LCD_WIDTH) {
// String fits the LCD, so just print it
write_str(str);
while (slen < TEXT_MODE_LCD_WIDTH) { write_byte(' '); ++slen; }
}
else {
// String is larger than the available space in screen.
// Get a pointer to the next valid UTF8 character
// and the string remaining length
uint8_t rlen;
const char *stat = ui.status_and_len(rlen);
write_str(stat, TEXT_MODE_LCD_WIDTH);
// If the remaining string doesn't completely fill the screen
if (rlen < TEXT_MODE_LCD_WIDTH) {
uint8_t chars = TEXT_MODE_LCD_WIDTH - rlen; // Amount of space left in characters
write_byte(' '); // Always at 1+ spaces left, draw a space
if (--chars) { // Draw a second space if there's room
write_byte(' ');
if (--chars) { // Draw a third space if there's room
write_byte(' ');
if (--chars) write_str(str, chars); // Print a second copy of the message
}
}
}
ui.advance_status_scroll();
}
#else
uint8_t slen = utf8_strlen(str);
write_str(str, TEXT_MODE_LCD_WIDTH);
for (; slen < TEXT_MODE_LCD_WIDTH; ++slen) write_byte(' ');
#endif
}
void ST7920_Lite_Status_Screen::draw_position(const xyze_pos_t &pos, const bool position_trusted) {
char str[7];
set_ddram_address(DDRAM_LINE_4);
begin_data();
// If position is unknown, flash the labels.
const unsigned char alt_label = position_trusted ? 0 : (ui.get_blink() ? ' ' : 0);
if (TERN1(LCD_SHOW_E_TOTAL, !printingIsActive())) {
write_byte(alt_label ? alt_label : 'X');
write_str(dtostrf(pos.x, -4, 0, str), 4);
write_byte(alt_label ? alt_label : 'Y');
write_str(dtostrf(pos.y, -4, 0, str), 4);
}
else {
#if ENABLED(LCD_SHOW_E_TOTAL)
char tmp[15];
const uint8_t escale = e_move_accumulator >= 100000.0f ? 10 : 1; // After 100m switch to cm
sprintf_P(tmp, PSTR("E%-7ld%cm "), uint32_t(_MAX(e_move_accumulator, 0.0f)) / escale, escale == 10 ? 'c' : 'm'); // 1234567mm
write_str(tmp);
#endif
}
write_byte(alt_label ? alt_label : 'Z');
write_str(dtostrf(pos.z, -5, 1, str), 5);
}
bool ST7920_Lite_Status_Screen::indicators_changed() {
// We only add the target temperatures to the checksum
// because the actual temps fluctuate so by updating
// them only during blinks we gain a bit of stability.
const bool blink = ui.get_blink();
const uint16_t feedrate_perc = feedrate_percentage;
const uint16_t fs = thermalManager.scaledFanSpeed(0);
const celsius_t extruder_1_target = thermalManager.degTargetHotend(0);
#if HAS_MULTI_HOTEND
const celsius_t extruder_2_target = thermalManager.degTargetHotend(1);
#endif
#if HAS_HEATED_BED
const celsius_t bed_target = thermalManager.degTargetBed();
#endif
static uint16_t last_checksum = 0;
const uint16_t checksum = blink ^ feedrate_perc ^ fs ^ extruder_1_target
^ TERN0(HAS_MULTI_HOTEND, extruder_2_target)
^ TERN0(HAS_HEATED_BED, bed_target);
if (last_checksum == checksum) return false;
last_checksum = checksum;
return true;
}
void ST7920_Lite_Status_Screen::update_indicators(const bool forceUpdate) {
if (forceUpdate || indicators_changed()) {
const bool blink = ui.get_blink();
const duration_t elapsed = print_job_timer.duration();
duration_t remaining = TERN0(USE_M73_REMAINING_TIME, ui.get_remaining_time());
const uint16_t feedrate_perc = feedrate_percentage;
const celsius_t extruder_1_temp = thermalManager.wholeDegHotend(0),
extruder_1_target = thermalManager.degTargetHotend(0);
#if HAS_MULTI_HOTEND
const celsius_t extruder_2_temp = thermalManager.wholeDegHotend(1),
extruder_2_target = thermalManager.degTargetHotend(1);
#endif
#if HAS_HEATED_BED
const celsius_t bed_temp = thermalManager.wholeDegBed(),
bed_target = thermalManager.degTargetBed();
#endif
draw_extruder_1_temp(extruder_1_temp, extruder_1_target, forceUpdate);
TERN_(HAS_MULTI_HOTEND, draw_extruder_2_temp(extruder_2_temp, extruder_2_target, forceUpdate));
TERN_(HAS_HEATED_BED, draw_bed_temp(bed_temp, bed_target, forceUpdate));
uint8_t spd = thermalManager.fan_speed[0];
#if ENABLED(ADAPTIVE_FAN_SLOWING)
if (!blink && thermalManager.fan_speed_scaler[0] < 128)
spd = thermalManager.scaledFanSpeed(0, spd);
#endif
draw_fan_speed(thermalManager.pwmToPercent(spd));
// Draw elapsed/remaining time
const bool show_remaining = ENABLED(SHOW_REMAINING_TIME) && (DISABLED(ROTATE_PROGRESS_DISPLAY) || blink);
if (show_remaining && !remaining.second()) {
const auto progress = ui.get_progress_percent();
if (progress)
remaining = elapsed.second() * (100 - progress) / progress;
}
if (show_remaining && remaining.second())
draw_print_time(remaining, 'R');
else
draw_print_time(elapsed);
draw_feedrate_percentage(feedrate_perc);
// Update the fan and bed animations
if (spd) draw_fan_icon(blink);
TERN_(HAS_HEATED_BED, draw_heat_icon(bed_target > 0 && blink, bed_target > 0));
}
}
bool ST7920_Lite_Status_Screen::position_changed() {
const xyz_pos_t pos = current_position;
const uint8_t checksum = uint8_t(pos.x) ^ uint8_t(pos.y) ^ uint8_t(pos.z);
static uint8_t last_checksum = 0, changed = last_checksum != checksum;
if (changed) last_checksum = checksum;
return 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;
bool changed = last_checksum != checksum;
if (changed) last_checksum = checksum;
return changed;
}
bool ST7920_Lite_Status_Screen::blink_changed() {
static uint8_t last_blink = 0;
const bool blink = ui.get_blink(), changed = last_blink != blink;
if (changed) last_blink = blink;
return changed;
}
#ifndef STATUS_EXPIRE_SECONDS
#define STATUS_EXPIRE_SECONDS 20
#endif
void ST7920_Lite_Status_Screen::update_status_or_position(bool forceUpdate) {
#if STATUS_EXPIRE_SECONDS
static uint8_t countdown = 0;
#endif
/**
* There's only enough room for either the status message or the position,
* so draw one or the other. When the status message changes, show it for
* a few seconds, then return to the position display once the head moves.
*
* countdown > 1 -- Show status
* countdown = 1 -- Show status, until movement
* countdown = 0 -- Show position
*
* If STATUS_EXPIRE_SECONDS is zero, only the status is shown.
*/
if (forceUpdate || status_changed()) {
TERN_(STATUS_MESSAGE_SCROLLING, ui.status_scroll_offset = 0);
#if STATUS_EXPIRE_SECONDS
countdown = ui.status_message[0] ? STATUS_EXPIRE_SECONDS : 0;
#endif
draw_status_message();
blink_changed(); // Clear changed flag
}
#if !STATUS_EXPIRE_SECONDS
else if (TERN0(STATUS_MESSAGE_SCROLLING, blink_changed()))
draw_status_message();
#else
else if (blink_changed()) {
if (countdown > 1) {
countdown--;
TERN_(STATUS_MESSAGE_SCROLLING, draw_status_message());
}
else if (countdown > 0) {
if (position_changed()) {
countdown--;
forceUpdate = true;
}
TERN_(STATUS_MESSAGE_SCROLLING, draw_status_message());
}
}
if (countdown == 0 && (forceUpdate || position_changed() || TERN(DISABLE_REDUCED_ACCURACY_WARNING, 0, blink_changed())))
draw_position(current_position, TERN(DISABLE_REDUCED_ACCURACY_WARNING, 1, all_axes_trusted()));
#endif
}
void ST7920_Lite_Status_Screen::update_progress(const bool forceUpdate) {
#if EITHER(LCD_SET_PROGRESS_MANUALLY, SDSUPPORT)
// Since the progress bar involves writing
// quite a few bytes to GDRAM, only do this
// when an update is actually necessary.
static uint8_t last_progress = 0;
const uint8_t progress = ui.get_progress_percent();
if (forceUpdate || last_progress != progress) {
last_progress = progress;
draw_progress_bar(progress);
}
#else
UNUSED(forceUpdate);
#endif
}
void ST7920_Lite_Status_Screen::update(const bool forceUpdate) {
cs();
update_indicators(forceUpdate);
update_status_or_position(forceUpdate);
update_progress(forceUpdate);
ncs();
}
void ST7920_Lite_Status_Screen::reset_state_from_unknown() {
_extended_function_set(true, true); // Do it twice as only one bit
_extended_function_set(true, true); // get set at a time.
_scroll_or_addr_select(false);
}
void ST7920_Lite_Status_Screen::on_entry() {
cs();
reset_state_from_unknown();
clear();
clear_gdram();
draw_static_elements();
update(true);
ncs();
}
void ST7920_Lite_Status_Screen::on_exit() {
cs();
clear();
_extended_function_set(true, true); // Restore state to what u8g expects.
ncs();
}
// Called prior to the KILL screen to
// clear the screen, preventing a garbled display.
void ST7920_Lite_Status_Screen::clear_text_buffer() {
cs();
reset_state_from_unknown();
clear();
_extended_function_set(true, true); // Restore state to what u8g expects.
ncs();
}
void MarlinUI::draw_status_screen() {
ST7920_Lite_Status_Screen::update(false);
}
// This method is called before each screen update and
// fires on_entry() and on_exit() events upon entering
// or exiting the Status Screen.
void MarlinUI::lcd_in_status(const bool inStatus) {
static bool lastInStatus = false;
if (lastInStatus == inStatus) return;
if ((lastInStatus = inStatus))
ST7920_Lite_Status_Screen::on_entry();
else
ST7920_Lite_Status_Screen::on_exit();
}
#endif // LIGHTWEIGHT_UI
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