ssd1327 oled display interfacing with stm32
Hi have been working on the interfacing of ssd1327 with stm32 microcontroller, i am just trying to print a pixel on the display but I could not display it. my code is as follows
WRITECOMMAND(0xae);
//
WRITECOMMAND(0x15);
WRITECOMMAND(0x00);
WRITECOMMAND(0x7f);
WRITECOMMAND(0x75);
WRITECOMMAND(0x00);
WRITECOMMAND(0x7f);
WRITECOMMAND(0x81);
WRITECOMMAND(225);// this is for contrast
WRITECOMMAND(0xa0);
WRITECOMMAND(0x51);
WRITECOMMAND(0xa1);
WRITECOMMAND(0x00);
WRITECOMMAND(0xa2);
WRITECOMMAND(0x00);
// SSD1306_WRITECOMMAND(0xa6); //this is for on all the pixels a6 to off all the pixels
WRITECOMMAND(0xa8); //set multiplex ratio
WRITECOMMAND(0x7f);
WRITECOMMAND(0xab); //set multiplex ratio
WRITECOMMAND(0x01);
WRITECOMMAND(0xb6); //set phase leghth
WRITECOMMAND(0x0f);
WRITECOMMAND(0xbe); //Set vcomh voltage
WRITECOMMAND(0x0f);
WRITECOMMAND(0xbc); //set pre-charge voltage
WRITECOMMAND(0x08);
WRITECOMMAND(0xd5); //second precharge period
WRITECOMMAND(0x62);
WRITECOMMAND(0xfd); //Unlock commands
WRITECOMMAND(0x12);
WRITECOMMAND(0xaf);
HAL_Delay(1500);
// SSD1306_WRITECOMMAND(0xa5);
// SSD1306_WRITECOMMAND(0xa6);
WRITECOMMAND(0x15); /* Set Column Address */
WRITECOMMAND(0x08); /* Start Column: Start from 8 */
WRITECOMMAND(0x37); /* End Column */
// Row Address
WRITECOMMAND(0x75); /* Set Row Address */
WRITECOMMAND(0x08); /* Start Row*/
WRITECOMMAND(0x37); /* End Row*/
HAL_Delay(100);
WRITEDATA(0x01);
#define WRITECOMMAND(command) ssd1306_I2C_Write(SSD1306_I2C_ADDR, 0x00, (command))
/* Write data */
#define WRITEDATA(data) ssd1306_I2C_Write(SSD1306_I2C_ADDR, 0x40, (data))
