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Adding API to set pixels on LCD screen

connect
Jacob Alexander 8 years ago
parent
9a96c4635d
commit
d7b7d31cc2
2 changed files with 54 additions and 6 deletions
Unified View Show Diff Stats
  1. 1
    1
      Scan/STLcd/capabilities.kll
  2. 53
    5
      Scan/STLcd/lcd_scan.c

+ 1
- 1
Scan/STLcd/capabilities.kll View File

# Prescalars range from 0 to 7 (1 to 128) # Prescalars range from 0 to 7 (1 to 128)


# Base FTM clock selection (72 MHz system clock) # Base FTM clock selection (72 MHz system clock)
# @ 0xFFFF period, 72 MHz / 0xFFFF * 2 = Actual period
# @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period
# Higher pre-scalar will use the most power (also look the best) # Higher pre-scalar will use the most power (also look the best)
# Pre-scalar calculations # Pre-scalar calculations
# 0 - 72 MHz -> 549 Hz # 0 - 72 MHz -> 549 Hz

+ 53
- 5
Scan/STLcd/lcd_scan.c View File

// ----- Defines ----- // ----- Defines -----


#define LCD_TOTAL_VISIBLE_PAGES 4 #define LCD_TOTAL_VISIBLE_PAGES 4
#define LCD_TOTAL_PAGES 9
#define LCD_PAGE_LEN 128 #define LCD_PAGE_LEN 128




// CLI Functions // CLI Functions
void cliFunc_lcdCmd ( char* args ); void cliFunc_lcdCmd ( char* args );
void cliFunc_lcdColor( char* args ); void cliFunc_lcdColor( char* args );
void cliFunc_lcdDisp ( char* args );
void cliFunc_lcdInit ( char* args ); void cliFunc_lcdInit ( char* args );
void cliFunc_lcdTest ( char* args ); void cliFunc_lcdTest ( char* args );


// Scan Module command dictionary // Scan Module command dictionary
CLIDict_Entry( lcdCmd, "Send byte via SPI, second argument enables a0. Defaults to control." ); CLIDict_Entry( lcdCmd, "Send byte via SPI, second argument enables a0. Defaults to control." );
CLIDict_Entry( lcdColor, "Set backlight color. 3 16-bit numbers: R G B. i.e. 0xFFF 0x1444 0x32" ); CLIDict_Entry( lcdColor, "Set backlight color. 3 16-bit numbers: R G B. i.e. 0xFFF 0x1444 0x32" );
CLIDict_Entry( lcdDisp, "Write byte(s) to given page starting at given address. i.e. 0x1 0x5 0xFF 0x00" );
CLIDict_Entry( lcdInit, "Re-initialize the LCD display." ); CLIDict_Entry( lcdInit, "Re-initialize the LCD display." );
CLIDict_Entry( lcdTest, "Test out the LCD display." ); CLIDict_Entry( lcdTest, "Test out the LCD display." );


CLIDict_Def( lcdCLIDict, "ST LCD Module Commands" ) = { CLIDict_Def( lcdCLIDict, "ST LCD Module Commands" ) = {
CLIDict_Item( lcdCmd ), CLIDict_Item( lcdCmd ),
CLIDict_Item( lcdColor ), CLIDict_Item( lcdColor ),
CLIDict_Item( lcdDisp ),
CLIDict_Item( lcdInit ), CLIDict_Item( lcdInit ),
CLIDict_Item( lcdTest ), CLIDict_Item( lcdTest ),
{ 0, 0, 0 } // Null entry for dictionary end { 0, 0, 0 } // Null entry for dictionary end
void LCD_clear() void LCD_clear()
{ {
// Setup each page // Setup each page
for ( uint8_t page = 0; page < LCD_TOTAL_VISIBLE_PAGES; page++ )
for ( uint8_t page = 0; page < LCD_TOTAL_PAGES; page++ )
{ {
LCD_clearPage( page ); LCD_clearPage( page );
} }
LCD_writeDisplayReg( page, (uint8_t*)&STLcdDefaultImage[page * LCD_PAGE_LEN], LCD_PAGE_LEN ); LCD_writeDisplayReg( page, (uint8_t*)&STLcdDefaultImage[page * LCD_PAGE_LEN], LCD_PAGE_LEN );


// Setup Backlight // Setup Backlight
// TODO Expose default settings
SIM_SCGC6 |= SIM_SCGC6_FTM0; SIM_SCGC6 |= SIM_SCGC6_FTM0;
FTM0_CNT = 0; // Reset counter FTM0_CNT = 0; // Reset counter


FTM0_C2SC = 0x24; FTM0_C2SC = 0x24;


// Base FTM clock selection (72 MHz system clock) // Base FTM clock selection (72 MHz system clock)
// @ 0xFFFF period, 72 MHz / 0xFFFF * 2 = Actual period
// @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period
// Higher pre-scalar will use the most power (also look the best) // Higher pre-scalar will use the most power (also look the best)
// Pre-scalar calculations // Pre-scalar calculations
// 0 - 72 MHz -> 549 Hz // 0 - 72 MHz -> 549 Hz
// LCD State processing loop // LCD State processing loop
inline uint8_t LCD_scan() inline uint8_t LCD_scan()
{ {
// NOP - Screen Refresh
//LCD_writeControlReg( 0xE3 );
return 0; return 0;
} }


FTM0_C2V = rgb[2]; FTM0_C2V = rgb[2];
} }


void cliFunc_lcdDisp( char* args )
{
char* curArgs;
char* arg1Ptr;
char* arg2Ptr = args;

// First process page and starting address
curArgs = arg2Ptr;
CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );

// Stop processing args if no more are found
if ( *arg1Ptr == '\0' )
return;
uint8_t page = numToInt( arg1Ptr );

curArgs = arg2Ptr;
CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );

// Stop processing args if no more are found
if ( *arg1Ptr == '\0' )
return;
uint8_t address = numToInt( arg1Ptr );

// Set the register page
LCD_writeControlReg( 0xB0 | ( 0x0F & page ) );

// Set starting address
LCD_writeControlReg( 0x10 | ( ( 0xF0 & address ) >> 4 ) );
LCD_writeControlReg( 0x00 | ( 0x0F & address ));

// Process all args
for ( ;; )
{
curArgs = arg2Ptr;
CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );

// Stop processing args if no more are found
if ( *arg1Ptr == '\0' )
break;

uint8_t value = numToInt( arg1Ptr );

// Write buffer to SPI
SPI_write( &value, 1 );
}
}