display.c

测量脉搏的源码 Cypress公司使用 CY27443 完成相关的功能

#include "m8c.h"
#include "PSoCAPI.h"
#include "utils.h"
#include "globdefs.h"

#include "spim.h"
#include "display.h"

void LcdSendData ( char data );
void LcdSendCommand ( char command );

void LcdInit ( void )
{
  int i;
  SPIM_Start(SPIM_SPIM_MODE_0 | SPIM_SPIM_MSB_FIRST);
  
  CLEARBIT(LCD_PORT, LCD_RST_BIT);
  delayi(0xFF);
  SETBIT(LCD_PORT, LCD_RST_BIT);
  // Enable SPI port: No interrupt, MSBit first, Master mode
  
  LcdSendCommand(0x21);
  LcdSendCommand(0xBF);
  LcdSendCommand(0x13);

  LcdSendCommand(0x20); 
  LcdSendCommand(0x0C); // LCD in normal mode.
  
  //clear display
  LcdSendCommand(0x40);
  LcdSendCommand(0x80);
  for(i=0; i<504; i++) LcdSendData(0x00);
}

//--------------------------------------------------------------------------------------------------
// Name : LcdContrast
// Description : Set display contrast.
// Argument(s) : contrast -> Contrast value from 0x00 to 0x7F.
// Return value : None.
// Notes : No change visible at ambient temperature.
//--------------------------------------------------------------------------------------------------
void LcdContrast ( char contrast )
{
  // LCD Extended Commands.
  LcdSendCommand(0x21);
  // Set LCD Vop (Contrast).
  LcdSendCommand(0x80);
  // LCD Standard Commands, horizontal addressing mode.
  LcdSendCommand(0x20);
}

//--------------------------------------------------------------------------------------------------
// Name : LcdClear
// Description : Clears the display.
// Argument(s) : None.
// Return value : None.
//--------------------------------------------------------------------------------------------------
void LcdClear ( void )
{
  int i;
  for(i=0; i<504; i++) LcdSendData(0x00);
  LcdSendCommand(0x40);
  LcdSendCommand(0x80);
}

//--------------------------------------------------------------------------------------------------
// Name : LcdGotoXY
// Description : Sets cursor location to xy location corresponding to basic font size.
// Argument(s) : x, y -> Coordinate for new cursor position. x range 0..83, y - 0..5
// Return value : None.
//--------------------------------------------------------------------------------------------------
void LcdGoto ( char x, char y )
{
  LcdSendCommand(0x40 | y);
  LcdSendCommand(0x80 | x);
}

//--------------------------------------------------------------------------------------------------
// Name : LcdChr
// Description : Displays a character at current cursor location and increment cursor location.
// Argument(s) : ch -> Character to write.
//               dt (available only with DRAW_OVER_BACKGROUND directive) -> drawing type  
// Return value : None.
//--------------------------------------------------------------------------------------------------

void LcdChr ( char ch )
{
  int i;
  for(i=0; i<5; i++) LcdSendData(FontLookup[ch-32][i]);
  // empty space after character 
  LcdSendData(0x00);
}

void LcdStr ( char *dataPtr )
{
  int i;
  while ( *dataPtr ) 
  {
    char ch = *dataPtr++; 
    for(i=0; i<5; i++) LcdSendData(FontLookup[ch-32][i]);
    // empty space after character 
    LcdSendData(0x00);
  }
}

void LcdCStr ( const char *dataPtr )
{
  int i;
  while ( *dataPtr ) 
  {
    char ch = *dataPtr++; 
    for(i=0; i<5; i++) LcdSendData(FontLookup[ch-32][i]);
    // empty space after character 
    LcdSendData(0x00);
  }
}

void LcdVBargraph (char x, char ystart, char yend, char yposition)
{
  char i,j,ch;
  LcdSendCommand(0x40 | yend);
  LcdSendCommand(0x80 | x);
  LcdSendData(0xFF);
  for (i=0; i<6 ; i++) 
  { switch (yposition) 
    {
      case 0 : ch=0x80; break;
      case 1 : ch=0x80; break;
      case 2 : ch=0xC0; break;
      case 3 : ch=0xE0; break;
      case 4 : ch=0xF0; break;
      case 5 : ch=0xF8; break;
      case 6 : ch=0xFC; break;
      case 7 : ch=0xFE; break;
      default: ch=0xFF; break;
    };
    LcdSendData(ch);
  }
  LcdSendData(0xFF);
  for (j=yend-1; j>ystart; j--)
  {
    if (yposition > 8) yposition -=8; else yposition=0;  
    LcdSendCommand(0x40 | j);
    LcdSendCommand(0x80 | x);
    LcdSendData(0xFF);
    for (i=0; i<6 ; i++) 
    { switch (yposition) 
      {
        case 0 : ch=0x00; break;
        case 1 : ch=0x80; break;
        case 2 : ch=0xC0; break;
        case 3 : ch=0xE0; break;
        case 4 : ch=0xF0; break;
        case 5 : ch=0xF8; break;
        case 6 : ch=0xFC; break;
        case 7 : ch=0xFE; break;
        default: ch=0xFF; break;
      };
      LcdSendData(ch);
    };
    LcdSendData(0xFF);
  };
  if (yposition > 8) yposition -=8; else yposition=0;  
  LcdSendCommand(0x40 | ystart);
  LcdSendCommand(0x80 | x);
  LcdSendData(0xFF);
  for (i=0; i<6 ; i++) 
  { switch (yposition) 
    {
      case 0 : ch=0x01; break;
      case 1 : ch=0x81; break;
      case 2 : ch=0xC1; break;
      case 3 : ch=0xE1; break;
      case 4 : ch=0xF1; break;
      case 5 : ch=0xF9; break;
      case 6 : ch=0xFD; break;
      case 7 : ch=0xFF; break;
      default: ch=0xFF; break;
    };
    LcdSendData(ch);
  }
  LcdSendData(0xFF);
}

void LcdHBargraph (char y, char xstart, char xend, char xposition)
{
  int i;
  LcdSendCommand(0x40 | y);
  LcdSendCommand(0x80 | xstart);
  LcdSendData(0x7E);
  for (i=1; i<=xposition; i++) LcdSendData(0x7E);
  for (i=xposition+1; i<xend-xstart; i++) LcdSendData(0x42);
  LcdSendData(0x7E);
}

void LcdSendData ( char data )
{
  SETBIT(LCD_PORT, LCD_DC_BIT);
  // Send data to display controller.
  SPIM_SendTxData(data);
  // Wait until SPI cycle complete.
  while ( ! (bSPIM_ReadStatus() & SPIM_SPIM_SPI_COMPLETE) );
}

void LcdSendCommand ( char command )
{
  CLEARBIT(LCD_PORT, LCD_DC_BIT);
  // Send command to display controller.
  SPIM_SendTxData(command);
  // Wait until SPI cycle complete.
  while ( ! (bSPIM_ReadStatus() & SPIM_SPIM_SPI_COMPLETE) );
}