Guten Morgen Zusammen,
ja dann will ich mal dem Vorschlag nachgehen es selbst zu versuchen und mit dem Display EA W202-XDLG beginnen, dieses tut zwar schon, aber nicht richtig, es treffen die Zeichen nicht genau auf ein Pixelblock.
Ich verwende gerade die hier genannte SPI Bibliothek:
Und hier mein Code dazu:
#include "iwi_SPI_RS0010.h"
SPI_RS0010 rs;
void setup(){
rs.initSPI(12,11,13,10);//uint8_t miso, uint8_t mosi, uint8_t clk, uint8_t cs
rs.begin(0,0,1);
}
void loop(){
rs.clearBuf();
rs.drawString(35,0,"Filter",1,1,1);
rs.displayBuf();
delay(2000);
rs.clearBuf();
rs.drawString(35,0,"F",1,1,1);
rs.drawString(40,0,"i",1,1,1);
rs.drawString(45,0,"l",1,1,1);
rs.drawString(50,0,"t",1,1,1);
rs.drawString(55,0,"e",1,1,1);
rs.drawString(60,0,"r",1,1,1);
rs.displayBuf();
delay(2000);
}
Im zweiten Teil habe ich mit so geholfen, dass die Zeichen auf die Pixel treffen, etwas mühsam...
Deshalb habe ich versucht eine Bibliothek zu finden die besser sein könnte:
//V1.1 Changes:
//Added 2ms delay for clear display function
//Added Return home in clear display function
//INFO
//Made for MBED LPC1768
//Made for EA W082-XLG In SPI mode (8x2 Oled display)
//Also works with other Oled displays
//Default Ports: (For LPC1768)
//p11 = mosi
//p12 = miso
//p13 = sck
//p10 = cs
// 8x2 display cursor location
// |---------------------------------------|
// | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
// |---------------------------------------|
// | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 |
// |---------------------------------------|
//IF Degree Symbol is desired, write DEG instead of the symbol, it will display the ° symbol. Example: DispCharacter(DEG); //Writes ° to display
//FUNCTIONS:
//OpenDisplay(); //Configures the display, should be run at startup in main routine, Clears display and returns to (1,1)
//DispLocate(X,Y); //For choosing where the cursor is located. X is the line position (1-8), Y is the line select (1 for first line, 2 is for second line)
//DispCharacter('X'); //For writing a single Character to the display
//DispLine("HELLO"); //For writing a string to the display, (max 8 bit)
//ClearDisp(); //For Clearing Display, also returns the cursor to home (1,1)
//DispReturn(); //For Returning the cursor to home (1,1)
//ShiftRight(); //Shifts the cursor one to the right
//ShiftLeft(); //Shifts the cursor one to the left
//Define Pins:
#define mosi p11
#define miso p12
#define sck p13
#define DEG 0xD2 //IF Degree Symbol is desired, write DEG instead of the symbol, it will display the ° symbol. Example: DispCharacter(DEG); //Writes ° to display
DigitalOut cs(p10); //Chip select
//Define SPI connections:
SPI spi(mosi, miso, sck); // mosi, miso, sck
//For Use in Main Routine:
void DispLocate(char Char1, char Char2); //For deciding location of cursor, for use in main routine
void ClearDisp(void); //Clears the display, also returns the cursor to home (1,1)
void DispReturn(void); //returns cursor to home (1,1)
void ShiftRight(void); //Shifts cursor right
void ShiftLeft(void); //Shifts cursor left
void DispCharacter(void); //For displaying a single character. Example: DispCharacter('A'); //Wrtites A on display
void DispLine(void); //For Writing Line to display. Example: DispLine("Hello"); //Writes Hello on the display
//Prototypes:
void DispConfig(char Char); //For sending command to configure the display, used in the OpenDisplay routine
void Delay2us(void); //2us delay, used as a small delay for setup purposes
//Init Oled Display:
void OpenDisplay(){
//DigitalOut cs(p8); //Chip select
cs = 1; //high at idle
spi.format(10,3); //10bit, high steady state clock
spi.frequency(1000000); //1MHz spi clock
//Display init routine
DispConfig(0x39); //function set european chararacter set
DispConfig(0x08); //display off
DispConfig(0x06); //entry mode set increment cursor by 1 not shifting display
DispConfig(0x17); //Character mode and internel power on
DispConfig(0x01); //clear display
DispConfig(0x02); //return home
DispConfig(0x0C); //display on
wait_ms(10); //Time to stabilize (wont work without)
}
//Send single line to display
void DispLine(char textstr[]){
char len = strlen(textstr);
for(char i = 0; i < len; i++){
cs = 0; //chip select to start data transmission
spi.write(0x200 | textstr[i]); //add 0x02 for character transmission
cs = 1; //chip select to end data transmission
Delay2us(); //small delay for cs to stabilize
}
}
void DispCharacter(char instruction){
cs = 0; //chip select to start data transmission
spi.write(0x200 | instruction); //add 0x02 for character transmission
cs = 1; //chip select to end data transmission
Delay2us(); //small delay for cs to stabilize
}
//Send single character to display
void DispConfig(char instruction){
cs = 0; //chip select to start data transmission
spi.write(instruction);
cs = 1; //chip select to end data transmission
Delay2us(); //small delay for cs to stabilize
}
//Locate Cursor
void DispLocate(char X, char Y){
DispReturn(); //Return the cursor to home
char tempX;
tempX = X;
char tempY;
tempY = Y;
//Shift to next line (64 times to the right)
if(tempY > 1){
for(int i = 0; i < 64; i++){
ShiftRight();
}
}
//Decides how many times the cursor is shifted
while(tempX > 1){
tempX--;
ShiftRight();
}
}
//Toggle Chipselect
void Chipselect(){
cs = !cs;
}
void Delay2us(){
wait_us(2); //small delay for cs to stabilize
}
void ClearDisp(){
DispConfig(0x01); //Clear Display, Sets DDRAM-address 0 into adresscounter
wait_ms(2); //wait a little, wont work without
DispReturn(); //Returns cursor home
}
void DispReturn(){
DispConfig(0x02); //Returns the cursor to home
}
void ShiftRight(){
DispConfig(0x14); //Shift cursor right
Delay2us();
}
void ShiftLeft(){
DispConfig(0x10); //Shift cursor left
Delay2us();
}
Die bekomme ich aber nicht zum laufen, da kein Exempel dabei zur Verfügung steht, vielleicht wäre das der erste Ansatz wie man das Display erst mal richtig zum laufen bekommt.
Natürlich bin ich für weitere Vorschläge oder eine bessere Bibliothek offen.
Grüße Georg
