[Banana pi Accessories] BPI-OLED moduel and how to use

BPI accessories
1

BPI-OLED 1.jpg582×508 62.4 KB

how to use :

#include <wiringPi.h>
#include <wiringPiSPI.h>
#include <stdio.h>  
#include <stdlib.h>  
#include <stdint.h>
#include <string.h>
#include <time.h>
 
unsigned char initcode[] = {
    0xAE, 0xA8, 0x3F, 0xD3, 0x00, 0x40, 0xA1, 0xC8,
        0xA6, 0xD5, 0x80, 0xDA, 0x12, 0x81, 0x00, 0xB0,
        0xA4, 0xDB, 0x40, 0x20, 0x00, 0x00, 0x10, 0x8D,
        0x14, 0x2E, 0xA6, 0xAF 
};
 
unsigned char poscode[] = {
        0x20, 0x00, 0xB0, 0x00, 0x10
};
 
#define BUFFER_SIZE 1024
unsigned char buffer[BUFFER_SIZE];
 
void oled_begin();
void oled_test();
 
int main(void)
{
        time_t now;
        struct tm *timenow;
 
        wiringPiSetup();
 
        oled_begin();
 
        time(&now);   
        timenow = localtime(&now);    
        printf("Start time is %s/n",asctime(timenow));  
 
        oled_test();
 
        time(&now);   
        timenow = localtime(&now);    
        printf("End time is %s/n",asctime(timenow));  
 
        return 0;
}
 
void oled_begin()
{                
        pinMode (5, OUTPUT) ;
        pinMode (6, OUTPUT) ;
        wiringPiSPISetup(0, 32*1000*1000);
        digitalWrite(6,  LOW) ;
        delay(50);
        digitalWrite(6,  HIGH) ;
        digitalWrite(5, LOW);
        wiringPiSPIDataRW(0, initcode, 28);
}
 
void oled_test()
{ 
        int r;
        FILE *fphzk;
        digitalWrite(5, LOW);
        wiringPiSPIDataRW(0, poscode, 5);
        fphzk=fopen("apple.dat","rb");
        r=fread(buffer,1,BUFFER_SIZE,fphzk);
        while(r>0)
        {
                digitalWrite(5, HIGH);
                wiringPiSPIDataRW(0, buffer, 1024);
                r=fread(buffer,1,BUFFER_SIZE,fphzk);
                delay(66);
        }
        fclose(fphzk);
}

running :