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longer scroll text an non-blocking scrolling #2

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d9cf043
corrected int type problems (int8_t overflow),
ChrisVeigl Jun 7, 2019
9154665
added non blocking scrolling example
ChrisVeigl Jun 7, 2019
7de1a1b
removed internal ledblinking - it caused problems with scrolling...
ChrisVeigl Jun 20, 2019
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85 changes: 67 additions & 18 deletions DFRobot_HT1632C/DFRobot_HT1632C.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,7 @@ void DFRobot_HT1632C::begin(){
xCoordinate = 0;
yCoordinate = 0;
fontValue = FONT8X4;
matrices=NULL;
}


Expand Down Expand Up @@ -434,13 +435,13 @@ void DFRobot_HT1632C::clrLine(uint8_t xStart, uint8_t yStart, uint8_t xStop, uin
}
}

void DFRobot_HT1632C::drawImage(const byte * img, uint8_t width_t, uint8_t height_t, int8_t x, int8_t y, int img_offset){
void DFRobot_HT1632C::drawImage(const byte * img, uint8_t width_t, uint8_t height_t, uint16_t x, uint16_t y, uint16_t img_offset){
uint8_t bytesPerColumn = (height_t >> 3) + ((height_t & 0b111)?1:0);
if(y + height_t < 0 || x + width_t < 0 || y > height || x > width){
return;
}
uint8_t dst_x = x;
uint8_t src_x = 0;
uint16_t dst_x = x;
uint16_t src_x = 0;
while(src_x < width_t){
if(dst_x < 0){
src_x++;
Expand All @@ -449,8 +450,8 @@ void DFRobot_HT1632C::drawImage(const byte * img, uint8_t width_t, uint8_t heigh
}else if(dst_x >= width){
break;
}
uint8_t src_y = 0;
uint8_t dst_y = y;
uint16_t src_y = 0;
uint16_t dst_y = y;
while(src_y < height_t){
if(dst_y < 0){
src_y -= dst_y;
Expand All @@ -476,13 +477,13 @@ void DFRobot_HT1632C::drawImage(const byte * img, uint8_t width_t, uint8_t heigh
}
}

void DFRobot_HT1632C::drawImageStr(const byte * img, uint8_t width_t, uint8_t height_t, int8_t x, int8_t y, int img_offset){
void DFRobot_HT1632C::drawImageStr(const byte * img, uint8_t width_t, uint8_t height_t, uint16_t x, uint16_t y, uint16_t img_offset){
uint8_t bytesPerColumn = (height_t >> 3) + ((height_t & 0b111)?1:0);
if(y + height_t < 0 || x + width_t < 0 || y > height || x > width){
return;
}
uint8_t dst_x = x;
uint8_t src_x = 0;
uint16_t dst_x = x;
uint16_t src_x = 0;
while(src_x < width_t){
if(dst_x < 0){
src_x++;
Expand All @@ -491,8 +492,8 @@ void DFRobot_HT1632C::drawImageStr(const byte * img, uint8_t width_t, uint8_t he
}else if(dst_x >= width){
break;
}
uint8_t src_y = 0;
uint8_t dst_y = y;
uint16_t src_y = 0;
uint16_t dst_y = y;
while(src_y < height_t){
if(dst_y < 0){
src_y -= dst_y;
Expand Down Expand Up @@ -520,7 +521,7 @@ void DFRobot_HT1632C::drawImageStr(const byte * img, uint8_t width_t, uint8_t he

void DFRobot_HT1632C::drawText(const char text [], int x, int y, const byte font [], int font_end [], uint8_t font_height, uint8_t gutter_space){
int curr_x = x;
unsigned int i = 0;
uint16_t i = 0;
char currchar;

if(y + font_height < 0 || y >= HEIGHTSIZE){
Expand All @@ -544,7 +545,7 @@ void DFRobot_HT1632C::drawText(const char text [], int x, int y, const byte font
break;
}

int chr_width = getCharWidth(font_end, font_height, currchar);
uint8_t chr_width = getCharWidth(font_end, font_height, currchar);
if(curr_x + chr_width + gutter_space >= 0){
drawImage(font, chr_width, font_height, curr_x, y, getCharOffset(font_end, currchar));
for(uint8_t j = 0; j < gutter_space; ++j)
Expand All @@ -557,8 +558,8 @@ void DFRobot_HT1632C::drawText(const char text [], int x, int y, const byte font
}

void DFRobot_HT1632C::drawTextStr(const char text [], int x, int y, const byte font [], int font_end [], uint8_t font_height, uint8_t gutter_space){
int curr_x = x;
uint8_t i = 0;
uint16_t curr_x = x;
uint16_t i = 0;
char currchar;

if(y + font_height < 0 || y >= HEIGHTSIZE){
Expand All @@ -581,7 +582,7 @@ void DFRobot_HT1632C::drawTextStr(const char text [], int x, int y, const byte f
if(curr_x >= WIDTHSIZE){
//break;
}
int chr_width = getCharWidth(font_end, font_height, currchar);
uint8_t chr_width = getCharWidth(font_end, font_height, currchar);
if(curr_x + chr_width + gutter_space >= 0){
drawImageStr(font, chr_width, font_height, curr_x, y, getCharOffset(font_end, currchar));
for(char j = 0; j < gutter_space; ++j)
Expand Down Expand Up @@ -613,7 +614,7 @@ int DFRobot_HT1632C::getCharOffset(int font_end [], uint8_t font_index) {

int DFRobot_HT1632C::getTextWidth(const char text [], int font_end [], uint8_t font_height, uint8_t gutter_space) {
int wd = 0;
uint8_t i = 0;
uint16_t i = 0;
char currchar;

while(true){
Expand Down Expand Up @@ -766,13 +767,14 @@ void DFRobot_HT1632C::print(const char str[], uint16_t speed){
this->doLength(str);

this->width = length;
if (matrices) free(matrices);
matrices = (char*)malloc(length+24);
if(matrices == NULL) return;
memset(matrices,'\0',length+24);

this->setCursorIndex(0,0);
this->printStr(str);
for(uint8_t i=1; i<length+24;i++){
for(uint16_t i=1; i<length+24;i++){
for(uint8_t j = xIndex; j<24-xIndex; j++){
matrix[j] = '\0';
}
Expand All @@ -789,9 +791,56 @@ void DFRobot_HT1632C::print(const char str[], uint16_t speed){
matrices = NULL;
}


void DFRobot_HT1632C::startScrolling(char * str){
this->scrollPos=0;
this->scrollTimestamp=millis();

this->length = strlen(str)*5;
this->doLength(str);
this->width = length;

if (matrices) free(matrices);
matrices = (char*)malloc(length+24);
if(matrices == NULL) return;
memset(matrices,'\0',length+24);

this->setCursorIndex(0,0);
this->printStr(str);
}

void DFRobot_HT1632C::doScrolling(uint16_t speed){

if (matrices==NULL) return;
if (millis() - this->scrollTimestamp >= speed) {
this->scrollTimestamp=millis();
this->scrollPos++;
if (this->scrollPos >= length+24)
this->scrollPos=0;

uint16_t i=this->scrollPos;
for(uint16_t j = xIndex; j<24-xIndex; j++){
matrix[j] = '\0';
}

if(i <= 24-xIndex){
memcpy(&matrix[24-i], &matrices[0], i);
}else{
memcpy(&matrix[xIndex], &matrices[i-24+xIndex], 24-xIndex);
}
this->writeScreen();
}
}

void DFRobot_HT1632C::endScrolling(){
free(matrices);
matrices = NULL;
}


void DFRobot_HT1632C::doLength(const char text[]){
char currchar;
uint8_t i = 0;
uint16_t i = 0;

while(true){
if (text[i] == '\0') {
Expand Down
20 changes: 14 additions & 6 deletions DFRobot_HT1632C/DFRobot_HT1632C.h
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Original file line number Diff line number Diff line change
Expand Up @@ -113,23 +113,31 @@ class DFRobot_HT1632C{
void print(const char str[], uint16_t speed);
void printStr(const char str[], uint8_t value=0);

void startScrolling(char *str);
void doScrolling(uint16_t speed);
void endScrolling();

private:
char* strBuffer;
uint8_t length;
uint8_t xIndex;
uint8_t width, height;
uint16_t length;
uint16_t xIndex;
uint16_t width, height;
uint8_t xCoordinate, yCoordinate, fontValue;
uint8_t data_t, cs_t, wr_t, rd_t;
uint8_t matrix[24]; //24*8/8
char* matrices;
unsigned long scrollTimestamp;
uint16_t scrollPos;

void writeCommand(uint8_t cmd);
void writeBits(uint16_t data, uint8_t length);
void writeRAM(uint8_t addr, uint8_t data);



void doLength(const char text[]);

void drawImage(const byte * img, uint8_t width_t, uint8_t height_t, int8_t x, int8_t y, int img_offset);
void drawImageStr(const byte * img, uint8_t width_t, uint8_t height_t, int8_t x, int8_t y, int img_offset);
void drawImage(const byte * img, uint8_t width_t, uint8_t height_t, uint16_t x, uint16_t y, uint16_t img_offset);
void drawImageStr(const byte * img, uint8_t width_t, uint8_t height_t, uint16_t x, uint16_t y, uint16_t img_offset);
int getCharWidth(int font_end [], uint8_t font_height, uint8_t font_index);
int getCharOffset(int font_end [], uint8_t font_index);
};
Expand Down
42 changes: 42 additions & 0 deletions DFRobot_HT1632C/examples/nbScrolling/nbScrolling.ino
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Original file line number Diff line number Diff line change
@@ -0,0 +1,42 @@
#include "DFRobot_HT1632C.h"

#if defined( ESP_PLATFORM ) || defined( ARDUINO_ARCH_FIREBEETLE8266 ) //FireBeetle-ESP32 FireBeetle-ESP8266
#define DATA D6
#define CS D2
#define WR D7
//#define RD D8
#else
#define DATA 6
#define CS 2
#define WR 7
//#define RD 8
#endif

DFRobot_HT1632C ht1632c = DFRobot_HT1632C(DATA, WR,CS);

char msg[][90] = {{" this is a test of the non-blocking scrolling function for the HT1632 LedMatrix !!! "},
{" its fun :-) second message !! 1234567890 "},
{" visit the github repository https://github.com/Chocho2017/FireBeetleLEDMatrix "}};

void setup() {
ht1632c.begin();
ht1632c.clearScreen();
ht1632c.setCursor(0,0);
ht1632c.startScrolling(msg[0]);
}

void loop() {
static unsigned long msgTimer = millis();
static unsigned long ledTimer = millis();
static uint8_t msgCnt = 0;
static uint8_t ledState = 0;

if (millis() - msgTimer > 10000) {
msgTimer = millis();
msgCnt=(msgCnt+1)%3;
ht1632c.startScrolling(msg[msgCnt]);
}

ht1632c.doScrolling (50-msgCnt*15); // scrolling with variable speed

}
4 changes: 4 additions & 0 deletions DFRobot_HT1632C/keywords.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,10 @@ setCursor KEYWORD2
setFont KEYWORD2

print KEYWORD2
startScrolling KEYWORD2
doScrolling KEYWORD2
endScrolling KEYWORD2


FONT5X4 KEYWORD2
FONT8X4 KEYWORD2
Expand Down