0.5" oled non-arduino

having trouble with the small oled on mbed.

've attached code. this doesnt produce anything on the display. i’ve gone through 3 displays now trying to see if they are broken.
[code]
#include
#include “mbed.h”
#include <stdlib.h>

#define KLED LED1

DigitalOut led1(LED1);

#define KUARTBAUD 9600

#define KSPIBAUD 1000000

#define KMOSI SPI_PSELMOSI0 //p06
#define KMISO SPI_PSELMISO0 //p07
#define KSCLK SPI_PSELSCK0 //p08

SPI spi(KMOSI, KMISO, KSCLK);

#define KOLEDCS P0_3
#define KOLEDRESET P0_4
#define KOLEDDC P0_5

DigitalOut reset(KOLEDRESET);
DigitalOut cs(KOLEDCS);
DigitalOut dc(KOLEDDC);

Serial pc(USBTX, USBRX);

int main(void) {
pc.baud(KUARTBAUD);

wait_ms(100);

pc.printf("\n");

reset = 0;
cs = 1;
dc = 0;

spi.format(8, 0);	// 8 Bit wide SPI and Mode (0 - 3)
spi.frequency(KSPIBAUD);	// SPI speed in Hz

// two methods of reset

#if 1 // by reset pin
reset = 0;
reset = 1;
wait_ms(1);
reset = 0;
wait_ms(100);
reset = 1;
wait_ms(1);
#else // by oled command
cs = 0;
dc = 0;
pc.printf(“01 %d\n”, spi.write(0x01));
// cs = 1;
#endif

wait_ms(100);

cs = 0;

// standby off
dc = 0;
pc.printf("14 %d\n", spi.write(0x14));
dc = 1;
pc.printf("00 %d\n", spi.write(0x00));
wait_ms(0);

cs = 1;
wait_ms(0);
cs = 0;

dc = 0;
pc.printf("30 %d\n", spi.write(0x30));
dc = 1;
pc.printf("00 %d\n", spi.write(0x00));
pc.printf("3b %d\n", spi.write(0x3b));
wait_ms(0);

cs = 1;
wait_ms(0);
cs = 0;

dc = 0;
pc.printf("32 %d\n", spi.write(0x32));
dc = 1;
pc.printf("00 %d\n", spi.write(0x00));
pc.printf("1f %d\n", spi.write(0x1f));
wait_ms(0);

cs = 1;
wait_ms(0);

#if 1
// draw image
cs = 0;
dc = 0;
pc.printf(“08 %d\n”, spi.write(0x08));
dc = 1;
for (int i=0;i<240;i++) {
pc.printf("-- %d\n", spi.write(i));
}
cs = 1;
wait_ms(0);
#endif

// display on
cs = 0;
dc = 0;
pc.printf("02 %d\n", spi.write(0x02));
dc = 1;
pc.printf("01 %d\n", spi.write(0x01));
cs = 1;
wait_ms(0);


while (1) {
	led1 = !led1;

	// draw image
	cs = 0;
	dc = 0;
	spi.write(0x08);
	dc = 1;
	for (int i=0;i<240;i++) {
		spi.write(i);
	}
	cs = 1;

	wait_ms(100);

}

}
[/code]

Hi there,



do you have a link about the oled? So we can check if we have and we can test it. thanks,



best rgds

Bill

<LINK_TEXT text=“https://www.seeedstudio.com/0.5-Inch-OL … -2194.html”>https://www.seeedstudio.com/0.5-Inch-OLED-display-Arduino-shield-p-2194.html</LINK_TEXT>

Hi there,

Have you followed by <LINK_TEXT text=“http://www.seeedstudio.com/document/pdf … ide%20.pdf”>http://www.seeedstudio.com/document/pdf/OCELL%20user%20guide%20.pdf</LINK_TEXT>? If you still can’t solve the issue by the instructions, please drop mail to designer tom@rxxdisplay.com. thanks.



Bill