342 lines
7.2 KiB
C++
342 lines
7.2 KiB
C++
#include <stdint.h>
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#include <LiquidCrystal.h>
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#include "src/list/src/list.h"
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LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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//#define REFRESH 1
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#define DEBUG
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uint8_t up_arrow[8] = {0x04,0x0E,0x1F,0x1F,0x00,0x00,0x00,0x00};
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uint8_t down_arrow[8] = {0x00,0x00,0x00,0x1F,0x1F,0x0E,0x04,0x04};
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typedef struct InfoState {
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char* info;
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int len;
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int fullLines;
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int Nlines;
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int lastlinelen;
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char *pos1, *pos2, *pos3;
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list_t *wrap;
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list_iterator_t *it;
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} InfoState;
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void setup() {
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Serial.begin(9600);
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lcd.begin(16, 2);
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lcd.createChar(0, up_arrow);
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lcd.createChar(1, down_arrow);
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lcd.setCursor(0, 0);
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lcd.print("...............");
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lcd.setCursor(0, 1);
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lcd.print("...............");
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}
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void loop() {
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char* cinfo = "Far far away, a\n\nbehind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts.";
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//String info = "hello,`world!wwwwwwwwwwwwwwww";
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InfoState st;
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initInfoScreen(&st, cinfo);
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#ifdef DEBUG
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Serial.println(String("len: ") + st.len);
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#endif
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#ifdef DEBUG
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Serial.println("down");
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#endif
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for (int i = 0; i < 3; ++i) {
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delay(1000);
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scrollDown(&st);
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}
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#ifdef DEBUG
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Serial.println("up");
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#endif
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for (int i = 0; i < 5; ++i) {
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delay(1000);
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scrollUp(&st);
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}
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#ifdef DEBUG
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Serial.println("down2");
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#endif
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for (int i = 0; i < 3; ++i) {
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delay(1000);
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scrollDown(&st);
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}
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#ifdef DEBUG
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Serial.println("up2");
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#endif
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for (int i = 0; i < 5; ++i) {
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delay(1000);
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scrollUp(&st);
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}
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delay(3000);
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}
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list_t* aux_gen_wrap_list(list_t* wrap, char* text) {
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if (wrap == NULL) {
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wrap = list_new();
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}
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char* curr = text;
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int suf = 0;
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list_node_t *node;
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if (list_rpush(wrap, list_node_new(0)) == NULL) {
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return NULL;
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}
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while (*curr != '\0') {
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//printf("suf: %d\tpos: %d\n", suf, (unsigned int)(curr-text));
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if (suf < 15) {
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if (*curr != '\n' && *curr != '\r') {
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++suf;
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} else {
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if (list_rpush(wrap, list_node_new((unsigned int)(curr-text))) == NULL) {
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return NULL;
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}
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suf = 0;
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}
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} else {
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if (list_rpush(wrap, list_node_new((unsigned int)(curr-text))) == NULL) {
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return NULL;
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}
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suf = (*curr != '\n' && *curr != '\r') ? 1 : 0;
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}
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++curr;
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}
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if (list_rpush(wrap, list_node_new(strlen(text))) == NULL) {
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return NULL;
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}
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return wrap;
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}
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void initInfoState(InfoState* st, char* text) {
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st->info = text;
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st->len = strlen(text);
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st->fullLines = st->len / 15;
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st->Nlines = (st->len + 14) / 15;
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st->lastlinelen = st->len % 15;
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st->pos1 = text;
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st->pos2 = text;
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st->pos3 = text;
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st->wrap = list_new();
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st->wrap = aux_gen_wrap_list(st->wrap, st->info);
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st->it = list_iterator_new(st->wrap, LIST_HEAD);
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}
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void initInfoScreen(InfoState* st, char* text) {
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initInfoState(st, text);
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lcd.setCursor(0, 0);
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/*
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if (*(st->pos1) == '\n' || *(st->pos1) == '\r') {
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lcd_blank_line();
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++st->pos1;
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++st->pos2;
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} else {
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st->pos2 += lcd_print_line(st->pos1);
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}
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lcd.setCursor(0, 1);
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if ((*(st->pos2) == '\n' || *(st->pos2) == '\r') && *(st->pos2 - 1) == *(st->pos2)) {
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lcd_blank_line();
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} else {
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lcd_print_line(st->pos2);
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}
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#ifdef DEBUG
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//Serial.println(String("pos1: ") + st->pos1);
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//Serial.println(String("pos2: ") + st->pos2);
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Serial.println("init");
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Serial.print(st->pos1-st->info);
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Serial.println(String(" ")+(st->pos2-st->info));
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#endif
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*/
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}
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void scrollDown(InfoState* st) {
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st->pos1 = st->pos2;
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lcd.setCursor(0, 0);
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if ((*(st->pos1) == '\n' || *(st->pos1) == '\r') && *(st->pos1 - 1) == *(st->pos1)) {
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lcd_blank_line();
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++st->pos1;
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++st->pos2;
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} else {
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st->pos2 += lcd_print_line(st->pos1);
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}
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lcd.setCursor(0, 1);
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if ((*(st->pos2) == '\n' || *(st->pos2) == '\r') && *(st->pos2 - 1) == *(st->pos2)) {
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lcd_blank_line();
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} else {
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lcd_print_line(st->pos2);
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}
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#ifdef DEBUG
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//Serial.println(String("pos1: ") + st->pos1);
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//Serial.println(String("pos2: ") + st->pos2);
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Serial.print(st->pos1-st->info);
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Serial.println(String(" ")+(st->pos2-st->info));
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#endif
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}
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void scrollUp(InfoState* st) {
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if (st->pos1 > st->info) {
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st->pos2 = st->pos1;
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int i = 1;
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int va = 1;
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/*
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int bound = min(st->pos1, 15);
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Serial.println(String("bound: ")+bound);
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while (i < bound) {
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if (st->info[st->pos1-i] != '\n' && st->info[st->pos1-i] != '\r') {
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++i;
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} else
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if (i == 1){ ++i; ++bound; } else
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{
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break;
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}
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}
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*/
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/*
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while (i < st->pos1-st->info && va < 15) {
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if (st->info[st->pos1-i] != '\n' && st->info[st->pos1-i] != '\r') {
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++i;
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++va;
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} else
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if (i == 1){ ++i; } else
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{
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break;
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}
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}
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st->pos1 -= i;
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*/
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bool is_blank = false;
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while (st->pos1 > st->info && va <= 15) {
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if (*(st->pos1) != '\n' && *(st->pos1) != '\r') {
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++i;
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++va;
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} else if (*(st->pos1 - 1) == *(st->pos1)) {
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is_blank = true;
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--st->pos1;
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break;
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}
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--st->pos1;
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}
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while (st->pos1 > st->info && (*(st->pos1) == '\n' || *(st->pos1) == '\r')) {
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--st->pos1;
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}
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//st->pos1 -= i;
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lcd.setCursor(0, 0);
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if (is_blank) {
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lcd_blank_line();
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} else {
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lcd_print_line(st->pos1);
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}
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lcd.setCursor(0, 1);
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if ((*(st->pos2) == '\n' || *(st->pos2) == '\r') && *(st->pos2 - 1) == *(st->pos2)) {
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lcd_blank_line();
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} else {
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lcd_print_line(st->pos2);
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}
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}
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#ifdef DEBUG
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//Serial.println(String("pos1: ") + st->pos1);
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//Serial.println(String("pos2: ") + st->pos2);
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Serial.print(st->pos1-st->info);
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Serial.println(String(" ")+(st->pos2-st->info));
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#endif
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}
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int lcd_print_line(char* str) {
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int i = 0;
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int va = 0;
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/*
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int bound = min(strlen(str), 15);
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while (i < bound) {
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if (str[i] != '\n' && str[i] != '\r') {
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lcd.print(str[i++]);
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} else
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if (i == 0){ ++i; ++bound;} else
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{
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break;
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}
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}
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*/
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int slen = strlen(str);
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while (i < slen && va < 15) {
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if (str[i] != '\n' && str[i] != '\r') {
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lcd.print(str[i++]);
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++va;
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} else
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if (i == 0){ ++i; } else
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{
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break;
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}
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}
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if (va < 15) {
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#if !REFRESH
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for (int j = 15 - va; j > 0; --j) {
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lcd.print(' ');
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}
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#endif
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++i;
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}
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return i;
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}
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/*
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Separate a substring that can be printed on one line, and return the
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original string position corresponding to the end of the substring.
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*/
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/*
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char* aux_sub_line(char* str, char substr[16]) {
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int suf = 0;
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char* curr = str;
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memset(substr, 0, 16);
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while (*curr != '\0' && suf < 15) {
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if (*curr != '\n' && *curr != '\r') {
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substr[suf++] = *(curr++);
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} else
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if (curr == str){ ++curr; } else
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{
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break;
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}
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}
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#if !REFRESH
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while (suf < 15) {
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substr[suf++] = ' ';
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}
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#endif
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return curr;
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}
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char* aux_sub_line_rev(char* str, char substr[16]) {
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int suf = 0;
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char* curr = str;
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memset(substr, 0, 16);
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while (*curr != '\0' && suf < 15) {
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if (*curr != '\n' && *curr != '\r') {
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substr[suf++] = *(curr--);
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} else
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if (curr == str){ --curr; } else
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{
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break;
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}
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}
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}
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*/
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void lcd_blank_line() {
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for (int i = 0; i < 15; ++i) {
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lcd.print(' ');
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}
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}
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