WhyCan Forum(哇酷开发者社区)

#include    "system.h"
#include    "ugui.h"

/* -------------------------------------------------- */
/* SOFTWARE SPI                                       */
/* -------------------------------------------------- */
#define OLED_PORT  GPIOB
#define OLED_SCK   GPIO_Pin_0
#define OLED_SDA   GPIO_Pin_1
#define OLED_DC    GPIO_Pin_2
#define OLED_RES   GPIO_Pin_3
#define OLED_CS    GPIO_Pin_4

void write_cmd(unsigned char b)
{
   unsigned char i;
   GPIO_WriteBit(OLED_PORT, OLED_CS, Bit_RESET);
   GPIO_WriteBit(OLED_PORT, OLED_DC, Bit_RESET);
   for (i=0x80; i; i>>=1)
   {
      GPIO_WriteBit(OLED_PORT, OLED_SCK, Bit_RESET);
      GPIO_WriteBit(OLED_PORT, OLED_SDA, (b&i)?Bit_SET:Bit_RESET);
      GPIO_WriteBit(OLED_PORT, OLED_SCK, Bit_SET);
   }
   GPIO_WriteBit(OLED_PORT, OLED_DC, Bit_SET);
   GPIO_WriteBit(OLED_PORT, OLED_CS, Bit_SET);
}

void write_data(unsigned char b)
{
   unsigned char i;
   GPIO_WriteBit(OLED_PORT, OLED_CS, Bit_RESET);
   GPIO_WriteBit(OLED_PORT, OLED_DC, Bit_SET);
   for (i=0x80; i; i>>=1)
   {
      GPIO_WriteBit(OLED_PORT, OLED_SCK, Bit_RESET);
      GPIO_WriteBit(OLED_PORT, OLED_SDA, (b&i)?Bit_SET:Bit_RESET);
      GPIO_WriteBit(OLED_PORT, OLED_SCK, Bit_SET);
   }
   GPIO_WriteBit(OLED_PORT, OLED_DC, Bit_SET);
   GPIO_WriteBit(OLED_PORT, OLED_CS, Bit_SET);
}

/* -------------------------------------------------- */
/* FRAMEBUFFER                                        */
/* -------------------------------------------------- */
unsigned char buff[128*32]; // 128x64 4BPP OLED

/* -------------------------------------------------- */
/* SSD1325 PSET-FUNCTION                              */
/* -------------------------------------------------- */
void ssd1325_pset ( UG_S16 x , UG_S16 y , UG_COLOR c )
{
   unsigned int n;
   unsigned char b;
   unsigned char col;

   col = c & 0x0F;

   n = (x >> 1) + 64 * y;
   b = buff[n];
   
   switch ( x%2 )
   {
      case 0: b &= 0xF0; b |= col; break;
      case 1: b &= 0x0F; b |= col<<4; break;
   }
   buff[n] = b;
}

/* -------------------------------------------------- */
/* SSD1325 INIT-FUNCTION                              */
/* -------------------------------------------------- */
void ssd1325_init( void )
{
   GPIO_WriteBit(OLED_PORT, OLED_RES, Bit_RESET);
   delay_ms(100);
   GPIO_WriteBit(OLED_PORT, OLED_RES, Bit_SET);
   delay_ms(100);

   write_cmd(0xAE|0x00);
   delay_ms(10);
   write_cmd(0xB3);         // Display Clock Divider/Osciallator Frequency
   write_cmd(0x91);         //   Default => 0x41
   delay_ms(10);
   write_cmd(0xA8);         // Set Multiplex Ratio
   write_cmd(0x3F);         //   Default => 0x5F
   delay_ms(10);
   write_cmd(0xA2);         // Set Display Offset
   write_cmd(0x4C);         //   Default => 0x00
   delay_ms(10);
   write_cmd(0xA1);         // Set Display Start Line
   write_cmd(0x00);         //   Default => 0x00
   delay_ms(10);
   write_cmd(0xAD);         // Set Master Configuration
   write_cmd(0x02|0x00);   //   Default => 0x03
   delay_ms(10);
   write_cmd(0xA0);         // Set Re-Map & Data Format
   write_cmd(0x50);         //   Default => 0x00
   delay_ms(10);
   write_cmd(0x84|0x02);   // Set Current Range
   delay_ms(10);
   write_cmd(0xB8);         // Set Gray Scale Table
   write_cmd(0x01);         //   Gray Scale Level 1
   write_cmd(0x11);         //   Gray Scale Level 3 & 2
   write_cmd(0x22);         //   Gray Scale Level 5 & 4
   write_cmd(0x32);         //   Gray Scale Level 7 & 6
   write_cmd(0x43);         //   Gray Scale Level 9 & 8
   write_cmd(0x54);         //   Gray Scale Level 11 & 10
   write_cmd(0x65);         //   Gray Scale Level 13 & 12
   write_cmd(0x76);         //   Gray Scale Level 15 & 14
   delay_ms(10);
   write_cmd(0x81);         // Set Contrast Value
   write_cmd(0x7F);         //   Default => 0x40
   delay_ms(10);
   write_cmd(0xB2);         // Set Frame Frequency (Row Period)
   write_cmd(0x46);         //   Default => 0x25 (37 Display Clocks)
   delay_ms(10);
   write_cmd(0xB1);         // Phase 1 & 2 Period Adjustment
   write_cmd(0x22);         //   Default => 0x53 (5 Display Clocks [Phase 2] / 3 Display Clocks [Phase 1])
   delay_ms(10);
   write_cmd(0xBC);         // Set Pre-Charge Voltage Level
   write_cmd(0x10);         //   Default => 0x10 (Connect to VCOMH)
   delay_ms(10);
   write_cmd(0xB4);         // Set Pre-Charge Compensation Level
   write_cmd(0x07);         //   Default => 0x00 (No Compensation)
   write_cmd(0xB0);       // Set Pre-Charge Compensation Enable
   write_cmd(0x08|0x20);   //   Default => 0x08
   delay_ms(10);
   write_cmd(0xBE);         // Set Output Level High Voltage for COM Signal
   write_cmd(0x02);         //   Default => 0x1D (0.81*VREF)
   delay_ms(10);
   write_cmd(0xBF);         // Set Segment Low Voltage Level
   write_cmd(0x02|0x0C);   //   Default => 0x0E
   delay_ms(10);
   write_cmd(0xA4|0x00);   // Set Display Mode
   delay_ms(10);
   write_cmd(0xAE|0x01);   // Set Display On/Off
   delay_ms(10);
}

/* -------------------------------------------------- */
/* SSD1325 UPDATE-FUNCTION                            */
/* -------------------------------------------------- */
void ssd1325_update( void )
{
   unsigned int i;
   unsigned char* p;
   p = &buff[0];

   write_cmd(0x15);      // Set Column Address
   write_cmd(0);         //   Default => 0x00
   write_cmd(0x3F);      //   Default => 0x3F (Total Columns Devided by 2)
   write_cmd(0x75);      // Set Row Address
   write_cmd(0);         //   Default => 0x00
   write_cmd(0x3F);      //   Default => 0x4F

   for(i=0;i<128*32;i++)
   {
      write_data(*p++);
   }
}


UG_GUI   gui;

int main(void)
{

   //...
   //...
   
   /* OLED init */
   ssd1325_init();

   /* 碌GUI init */   
   UG_Init(&gui,ssd1325_pset,128,64);

   UG_FillScreen( C_BLACK );
   UG_DrawFrame( 0, 0, 127, 63, C_WHITE );
   
   ssd1325_update();
   
   while(1)
   {

   }
}