/*
ṩԴ£
https://github.com/songzhishuo/STC32_u8g2_drv

ʹע
1.ڴʱҪע ҪƵĻ򣬷ܵ豸ܷ
2.̽STC32G12K128Beat LQFP64 Ͻ˲ԣзbugϵǡ

STC32G12K128İϷ߲ԣλ£

OLED-GND -> P2.7
OLED-VCC -> P2.6

IICģʽ
SCL -> P2.5
SDA -> P2.4
RST -> P2.3
DC  -> P2.2
Ҫiic.hļУU8g2_I2C_MODE/IIC_DMA_CFG 1ͬʱspi.hļУU8g2_SPI_MODE/SPI_DMA_CFG 0

SPIģʽ
SCK -> P2.5
MISO -> P2.4
MOSI -> P2.3
RST -> P2.2
DC  -> P2.1
CS  -> P2.0
Ҫiic.hļУU8g2_I2C_MODE/IIC_DMA_CFG 0ͬʱspi.hļУU8g2_SPI_MODE/SPI_DMA_CFG 1

Ĭʹڲ35MHz IRCʱӡ

SPIʱĬʹPLLʱԴSPI_SCKƵ26.25Mûɸе

ע SPI  IIC ģʽͬʱ

*/