SSD1306_LCD Example for WIZwiki-W7500
Dependencies: Adafruit_GFX mbed-dev
Prerequisite
This example is for OLED test.
To implement this function, you need a Platform board and OLED.
Below are what we used.
- WIZwiki-W7500 from WIZnet (Platform board)
- OLED from WIZnet
Hardware Configuration
WIZwiki-W7500 Pin map
OLED (from WIZnet)
Wiring Table
OLED | W7500 |
SCL | PA_9 |
SDA | PA_10 |
GND | GND |
VCC | VCC |
Software
Define Pins
main.cpp
#if defined(TARGET_WIZwiki_W7500) #define SDA PA_10 #define SCL PA_9 #endif
Set data for OLED
main.cpp
gOled.begin(); gOled.printf("%ux%u OLED Display\r\n", gOled.width(), gOled.height()); gOled.display();
Caution
watchout pins setting
main.cpp
- Committer:
- stkim92
- Date:
- 2017-04-12
- Revision:
- 2:e624abf0f696
- Parent:
- 1:6b03b9f64311
File content as of revision 2:e624abf0f696:
#include "mbed.h" #include "Adafruit_SSD1306.h" DigitalOut myled(LED1); #if defined(TARGET_WIZwiki_W7500) #define SDA PA_10 #define SCL PA_9 #endif // an SPI sub-class that provides a constructed default class I2CPreInit : public I2C { public: I2CPreInit(PinName sda, PinName scl) : I2C(sda, scl) { frequency(100000); start(); }; }; I2CPreInit gI2C(PA_10,PA_9); Adafruit_SSD1306_I2c gOled(gI2C,NC,0x78,64,128); Serial pc(USBTX,USBRX); int main() { uint16_t x=0; gOled.begin(); gOled.printf("%ux%u OLED Display\r\n", gOled.width(), gOled.height()); gOled.display(); while(1) { myled = !myled; gOled.printf("%u\r",x); gOled.display(); x = x + 1; wait(1); } }