// print text
// ----------------------------------------------------------
void RAIO_print_text( uint16_t pos_x, uint16_t pos_y, unsigned char *str, uint8_t BG_color, uint8_t FG_color )
{
union my_union number;
// set cursor
number.value = pos_x;
RAIO_SetRegister( CURH0, number.split.low );
RAIO_SetRegister( CURH1, number.split.high );
number.value = pos_y;
RAIO_SetRegister( CURV0, number.split.low );
RAIO_SetRegister( CURV1, number.split.high );
// set color
Text_Background_Color( BG_color );
Text_Foreground_Color( FG_color );
// set text mode
RAIO_SetRegister( MWCR0, 0x80 );
// write text to display
TFT_RegWrite( MRWC );
while ( *str != '\0' )
{
TFT_DataWrite( *str );
++str;
TFT_wait_for_raio();
}
TFT_wait_for_raio();
// set graphic mode
RAIO_SetRegister( MWCR0, 0x00 );
}
// set draw mode
// ----------------------------------------------------------
void RAIO_StartDrawing( int16_t whattodraw )
{
switch( whattodraw ) // -> see DRAW_MODES
{
case CIRCLE_NONFILL: {RAIO_SetRegister( DCR, 0x40 ); break;}
case CIRCLE_FILL: {RAIO_SetRegister( DCR, 0x60 ); break;}
case SQUARE_NONFILL: {RAIO_SetRegister( DCR, 0x90 ); break;}
case SQUARE_FILL: {RAIO_SetRegister( DCR, 0xB0 ); break;}
case LINE: {RAIO_SetRegister( DCR, 0x80 ); break;}
default: break;
}
TFT_wait_for_raio();
}
// clear screen
// ----------------------------------------------------------
void RAIO_clear_screen( void )
{
// for more informations see RA8870 specification page 40
//
// | Bit | Function
// |-----|-------------------------------------------------
// | 7 | 0 = stop clear 1 = start clear
// | 6 | 0 = fullwindow 1 = activewindow
// | 5-1 | NA
// | 0 | 0 = Memory clear with BTE background color 1 = Memory clear with font background color
//
// Reg 0x43 define font background color ( RRRGGGBB )
// Reg 0x60, 0x61, 0x62 define BTE background color ( BGCR0=red[4:0], BGCR1=green[5:0], BGCR2=blue[4:0] )
RAIO_SetRegister( MCLR , 0x80 );
TFT_wait_for_raio();
}
// initialization of RAIO8870
// ----------------------------------------------------------
void RAIO_init( void )
{
static uint8_t PLL_Initial_Flag = 0;
// *************** PLL settings (System Clock)
if ( !PLL_Initial_Flag ) // wait until PLL is ready
{
PLL_Initial_Flag = 1; // set Flag to avoid repeated PLL init
RAIO_SetRegister( PLLC1, 0x07 ); // set sys_clk
bcm2835_delayMicroseconds( 200 );
RAIO_SetRegister( PLLC2, 0x03 ); // set sys_clk
bcm2835_delayMicroseconds( 200 );
RAIO_SetRegister( PWRR, 0x01 ); // Raio software reset ( bit 0 ) set
RAIO_SetRegister( PWRR, 0x00 ); // Raio software reset ( bit 0 ) set to 0
delay( 100 );
// *************** color modes (color depths)
#ifdef CM_65K
// System Configuration Register
RAIO_SetRegister( SYSR, 0x0A ); // digital TFT
// parallel data out
// no external memory
// 8bit memory data bus
// 16bpp 65K color
// 16bit MCU-interface (data)
RAIO_SetRegister( DPCR, 0x00 ); // one layer
#elif defined(CM_4K)
// System Configuration Register
RAIO_SetRegister( SYSR, 0x06 ); // digital TFT
// parallel data out
// no external memory
// 8bit memory data bus
// 12bpp 4K color
// 16bit MCU-interface (data)
RAIO_SetRegister( DPCR, 0x80 ); // two layers
RAIO_SetRegister( MWCR1, BankNo_WR );
RAIO_SetRegister( LTPR0, BankNo_RD );
#else
#error "color_mode not defined"
#endif
}
// *************** horizontal settings
// 0x27+1 * 8 = 320 pixel
RAIO_SetRegister( HDWR , (DISPLAY_WIDTH / 8) - 1 );
RAIO_SetRegister( HNDFTR, 0x02 ); // Horizontal Non-Display Period Fine Tuning
// HNDR , Horizontal Non-Display Period Bit[4:0]
// Horizontal Non-Display Period (pixels) = (HNDR + 1)*8
RAIO_SetRegister( HNDR, 0x03 ); // 0x06
RAIO_SetRegister( HSTR, 0x04 ); //HSTR , HSYNC Start Position[4:0], HSYNC Start Position(PCLK) = (HSTR + 1)*8 0x02
// HPWR , HSYNC Polarity ,The period width of HSYNC.
// 1xxxxxxx activ high 0xxxxxxx activ low
// HSYNC Width [4:0] HSYNC Pulse width
// (PCLK) = (HPWR + 1)*8
RAIO_SetRegister( HPWR, 0x03 ); // 0x00
// ********************* vertical settings
// 0x0EF +1 = 240 pixel
RAIO_SetRegister( VDHR0 , ( (DISPLAY_HEIGHT-1) & 0xFF ) );
RAIO_SetRegister( VDHR1 , ( (DISPLAY_HEIGHT-1) >> 8) );
// VNDR0 , Vertical Non-Display Period Bit [7:0]
// Vertical Non-Display area = (VNDR + 1)
// VNDR1 , Vertical Non-Display Period Bit [8]
// Vertical Non-Display area = (VNDR + 1)
RAIO_SetRegister( VNDR0, 0x10 );
RAIO_SetRegister( VNDR1, 0x00 );
// VPWR , VSYNC Polarity ,VSYNC Pulse Width[6:0]
// VSYNC , Pulse Width(PCLK) = (VPWR + 1)
RAIO_SetRegister( VPWR, 0x00 );
// *************** miscellaneous settings
// active Window
Active_Window( 0, DISPLAY_WIDTH-1, 0, DISPLAY_HEIGHT-1 );
// PCLK fetch data on rising edge
RAIO_SetRegister( PCLK, 0x00 );
// Backlight dimming
RAIO_SetBacklightPWMValue(50);
Text_Background_Color( COLOR_WHITE );
// memory clear with background color
RAIO_SetRegister( MCLR, 0x81 );
TFT_wait_for_raio();
RAIO_SetRegister( IODR, 0x07 );
RAIO_SetRegister( PWRR, 0x80 );
}
void RAIO_screen_off( void ) {
RAIO_SetRegister( PWRR , 0x40 );
TFT_wait_for_raio();
}