0xcyc / 128x64-spi-oledscreen-migration-guidance

Guidance of 128x64 SPI OLEDscreen migration based on stm32f4xx

Guidance of 128x64 SPI OLEDscreen migration based on stm32f4xx

128x64 OLED SPI 0.96" Display

_2023/5/27 from cyc _2024/4/22 from cyc

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You can see three files:

oled.c oled.h oledfont.h

To use it properly you need to

Physicial wiring

Screen | label_name |  PCB_Silkscreen
  GND --> GND      --> GND
  VCC --> 3.3V     --> 3V3
  DO  --> SPI_SCK  --> SCL
  D1  --> SPI_MOSI --> SDA
  RES --> OLED_RES --> RES
  DC  --> OLED_DC  --> DC
  CS  --> OLED_CS  --> CS
* label_name is configuration in cubeMX
* PCB label is designed on extern board of f407 by zq

Pin configuration

• In cubeMX you need to configure SPI1 as below

  Mode: Transmit only Master

  Confirm the default settings:

  Hardware Nss Signal: Disable
  Data Size: 8Bits
  First Bit: MSB First
  CPOL: Low
  CPHA: 1 Edge

• For the extern board of f407 designed by zq, pin configuration is as below

  PB0: output,  label: OLED_DC
  PB1: output,  label: OLED_RES
  NA   output,  label: OLED_CS
  

  Silkscreen of CS is suspend, so you need an extra line to GPIO and configure it as CS

Program implantation

• Add oled.c to your project in keil (Application / User / Core), Don't forget to check ok & close

• Move these files to your project folder and add the path in Keil (Options for Target/ C/C++/Include Paths)

• Add below code

  /* USER CODE BEGIN Includes */
  #include "oled.h"
  /* USER CODE END Includes */

• Add below code to main.h file hspi1 is the SPI handler, number is up to your configuration

  /* USER CODE BEGIN Private defines */
  extern SPI_HandleTypeDef hspi1; 
  /* USER CODE END Private defines */

• Initialization

  OLED_Init();
  OLED_Clear();
  OLED_DisPlay_On();
  your function
  
  OLED_Refresh();