Image uploading and rendering with the use of my STM32 ST7735 library. Necessary steps for image preparing:

• creating the .png image
• converting it to RGB565 format
• saving pixels' values inside the array
• rendering stored data

All of this in detail - in my post. Example can be built with IAR Embedded Workbench (project files included) or can be used with any other IDE. The migrating process just includes copying .c and .h library files:

• st7735.c
• st7735.h
• st7735_image.c (for image data)

Project hardware and software set:

• STM32F103RE
• IAR Embedded Workbench
• STM32CubeMx
• HAL Driver

Physical connection:

• SPI1 for communication (only MOSI ans SCK needed - PB5 for MOSI signal, PB3 for SCK)
• PB7 (Reset)
• PC11 (CS)
• PB6 (DC)