Run OLED

I want to make the Smart watch.

but there are projects where I want to attach a small display for quickly figuring out the current state.

• WIZwiki-W7500
  
  • ARM Cortex-M0
  • Hardwared TCP/IP
• Adafruit
  
  • OLED 128 x 64
  • I2C communication
• Jumper line

Hardware parts for smart watch

WIZwiki-W7500

• 32-bit ARM Cortex-M0
• Flash : 128KB / SRAM : 16KB (up to 48KB)
• Hardwired TCP/IP Core (Supports MII Interface)
• Internal 8MHz Oscillator
• External crystal Oscillator (8~24MHz)
• 48MHz maximum frequency
• PLL for internal clock source
• ADC - 12bit, 8ch, 1Mbps
• DMA - UART, SPI, Software
• GPIO 53ea I/O
• 4 Timer/ 8 PWM
• 3 UART, 2 SPI, 2 I2C
• 32bit RNG
• Serial Wire Debug(SWD)
• Package : 64TQFP (7x7 mm)

Adafruit

• Power supply
  
  • VDD = 1.65V to 3.3V for IC logic
  • VCC = 7V to 15V for Panel driving
• For matrix display
  • OLED driving output voltage, 15V maximum
  • Segment maximum source current: 100uA
  • Common maximum sink current: 15mA
  • 256 step contrast brightness current control
• Embedded 128 x 64 bit SRAM display buffer
• Pin selectable MCU Interfaces:
  • 8-bit 6800/8080-series parallel interface
  • 3 /4 wire Serial Peripheral Interface
  • I2C Interface

For detailed, please refer the attached file.

WIZWatch is a simple system that is used a hardware platform called WIZwiki-W7500. The overall structure is in the picture above.

You can regulate the time using the button.

# WIZwiki-W7500 <--------------> OLED

• 3.3V <--------------------------> VCC
• GND <--------------------------> GND
• PA_09 <------------------------> SCL
• PA_10 <------------------------> SDA

Battery

You can simply connect battery by connecting (+) -> RAW, GND -> GND. You need to put (+) line to RAW pin in case you use any sort of external power supply, such as an external battery.

(I will write you about the details later on.)

Button

I will write you about the details later on.

If I can arrange the source code, you will upload it as soon as possible. : )