TheDIYGuy
commented
4 years ago Solved!
I had text defined as a string in my previous code, all i had to do was change it to be a char and do u8g.print(text) or u8g.drawStr(40,20,text)
Didnt even need the buffer after all
New code
/*
include "U8glib.h" // u8
U8GLIB_ST7920_128X64_1X u8g(6, 5, 9); // u8
include //sd
include //sd
const int chipSelect = 4; //sd int i = 0;
File dataFile; char text[3]; int text1 = 1; void setup() {// setup is all sd // Open serial communications and wait for port to open:
Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only }
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized: if (!SD.begin(chipSelect)) { Serial.println("Card failed, or not present"); // don't do anything more: while (1); } Serial.println("card initialized.");
// open the file. note that only one file can be open at a time, // so you have to close this one before opening another. File dataFile = SD.open("test.txt");
// if the file is available, write to it: if (dataFile) {
/*while (dataFile.available()) {
Serial.write(dataFile.read());
}
dataFile.close();
*/
while (dataFile.available()) {
text[i] = dataFile.read();
Serial.print(text[i]);
i++;
// Serial.print(i);
}
dataFile.close();} // if the file isn't open, pop up an error: else { Serial.println("error opening datalog.txt"); }
}
void loop() {// loop is all u8
char buf[50]; sprintf(buf, "%d", text);
Serial.print(i); i++; u8g.firstPage(); do { Draw(); } while( u8g.nextPage() ); delay(200); text1++;
}
void Draw(){ u8g.setFont(u8g_font_gdr25r); //u8g.drawStr(8, 30, "Eeee");
char buf[50]; sprintf(buf, "%d", text); u8g.setPrintPos(40,60); u8g.print(text); //u8g.drawStr(0, 20, ); u8g.drawStr(40, 20, text); u8g.drawStr(0, 60, "JP");
}*/
TheCook2
olikraus
Hello, i seem to be having a problem displaying a sample text file onto my lcd screen. I have the reprap Fullgraphics smart controller.
The lcd is a 128 x 64 It also has an sd card. It took awhile but eventually I got the lcd working and the sd card working at the same time. As in, I can read the text file and see it on the serial com, and also upload a graphic to the lcd. The problem i face is that i cant display the contents of the text file on the lcd. Its a simple 5 letter text file (You Yo). When i try to display the characters of the text file, I get the acsii numbers. I want to be able to display the characters, You Yo, which are in the text file, onto my lcd. Any help would be greatly appreciated
My code:
include "U8glib.h" // u8
U8GLIB_ST7920_128X64_1X u8g(6, 5, 9); // u8
include //sd
include //sd
const int chipSelect = 4; //sd int i = 0;
File dataFile; String text; int text1 = 1; void setup() {// setup is all sd // Open serial communications and wait for port to open:
Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only }
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized: if (!SD.begin(chipSelect)) { Serial.println("Card failed, or not present"); // don't do anything more: while (1); } Serial.println("card initialized.");
// open the file. note that only one file can be open at a time, // so you have to close this one before opening another. File dataFile = SD.open("test.txt");
// if the file is available, write to it: if (dataFile) {
} // if the file isn't open, pop up an error: else { Serial.println("error opening datalog.txt"); }
}
void loop() {// loop is all u8
u8g.firstPage(); do { Draw(); } while( u8g.nextPage() ); delay(200); text1++;
}
void Draw(){ u8g.setFont(u8g_font_gdr25r); //u8g.drawStr(8, 30, "Eeee");
char buf[50]; sprintf(buf, "%d", text); u8g.setPrintPos(40,60); u8g.print(buf); //u8g.drawStr(0, 20, ); //u8g.drawStr(40, 20, buf); u8g.drawStr(0, 60, "JP");