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iRiver: Proper LCD init

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5669 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2005-01-27 00:00:55 +00:00
parent db58e7edd2
commit f4702040d6
1 changed files with 42 additions and 11 deletions
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53
firmware/drivers/lcd-h100.c
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@ -34,7 +34,14 @@
/*** definitions ***/
/* LCD command codes */
#define LCD_CNTL_POWER_CONTROL 0x25
#define LCD_CNTL_VOLTAGE_SELECT 0x2b
#define LCD_CNTL_LINE_INVERT_DRIVE 0x36
#define LCD_CNTL_GRAY_SCALE_PATTERN 0x39
#define LCD_CNTL_TEMP_GRADIENT_SELECT 0x4e
#define LCD_CNTL_OSC_FREQUENCY 0x5f
#define LCD_CNTL_ON_OFF 0xae
#define LCD_CNTL_OSC_ON_OFF 0xab
#define LCD_CNTL_OFF_MODE 0xbe
#define LCD_CNTL_REVERSE 0xa6
#define LCD_CNTL_ALL_LIGHTING 0xa4
@ -42,7 +49,9 @@
#define LCD_CNTL_COLUMN_ADDRESS_DIR 0xa0
#define LCD_CNTL_NLINE_ON_OFF 0xe4
#define LCD_CNTL_DISPLAY_MODE 0x66
#define LCD_CNTL_ELECTRIC_VOLUME 0x81
#define LCD_CNTL_DUTY_SET 0x6d
#define LCD_CNTL_ELECTRONIC_VOLUME 0x81
#define LCD_CNTL_DATA_INPUT_DIR 0x84
#define LCD_CNTL_DISPLAY_START_LINE 0x8a
#define LCD_CNTL_PAGE 0xb1
@ -113,10 +122,18 @@ void lcd_init(void)
*/
void lcd_init (void)
{
/* GPO35 is the LCD A0 pin, GPO46 is LCD RESET */
/* GPO35 is the LCD A0 pin
GPO46 is LCD RESET */
GPIO1_OUT |= 0x00004008;
GPIO1_FUNCTION |= 0x00004008;
GPIO1_ENABLE |= 0x00004008;
GPIO1_FUNCTION |= 0x00004008;
/* Reset LCD */
sleep(1);
GPIO1_OUT &= ~0x00004000;
sleep(1);
GPIO1_OUT |= 0x00004000;
sleep(1);
lcd_write_command(LCD_CNTL_ON_OFF | 1); /* LCD ON */
lcd_write_command(LCD_CNTL_COLUMN_ADDRESS_DIR | 0); /* Normal */
@ -126,8 +143,22 @@ void lcd_init (void)
lcd_write_command(LCD_CNTL_OFF_MODE | 1); /* OFF -> VCC on drivers */
lcd_write_command(LCD_CNTL_NLINE_ON_OFF | 1); /* N-line ON */
lcd_write_command_ex(LCD_CNTL_DISPLAY_MODE, 1); /* Monochrome mode */
lcd_write_command_ex(LCD_CNTL_DUTY_SET, 0x20, 1);
lcd_write_command_ex(LCD_CNTL_VOLTAGE_SELECT, 3, -1);
lcd_write_command_ex(LCD_CNTL_ELECTRONIC_VOLUME, 0x1c, -1);
lcd_write_command_ex(LCD_CNTL_TEMP_GRADIENT_SELECT, 0, -1);
lcd_write_command_ex(LCD_CNTL_LINE_INVERT_DRIVE, 0x10, -1);
lcd_write_command_ex(LCD_CNTL_OSC_FREQUENCY, 3, -1);
lcd_write_command(LCD_CNTL_OSC_ON_OFF | 1); /* Oscillator ON */
lcd_write_command_ex(LCD_CNTL_POWER_CONTROL, 0x17, -1);
sleep(1);
lcd_write_command_ex(LCD_CNTL_DISPLAY_START_LINE, 0, -1);
lcd_write_command_ex(LCD_CNTL_GRAY_SCALE_PATTERN, 0x42, -1);
lcd_write_command_ex(LCD_CNTL_DISPLAY_MODE, 1, -1); /* Monochrome mode */
lcd_write_command(LCD_CNTL_DATA_INPUT_DIR | 0); /* Column mode */
lcd_clear_display();
lcd_update();
@ -144,8 +175,8 @@ void lcd_blit (const unsigned char* p_data, int x, int y, int width,
/* Copy display bitmap to hardware */
while (height--)
{
lcd_write_command_ex(LCD_CNTL_PAGE, y++ & 0xf);
lcd_write_command_ex(LCD_CNTL_COLUMN, x+xoffset);
lcd_write_command_ex(LCD_CNTL_PAGE, y++ & 0xf, -1);
lcd_write_command_ex(LCD_CNTL_COLUMN, x+xoffset, -1);
lcd_write_command(LCD_CNTL_DATA_WRITE);
lcd_write_data(p_data, width);
@ -166,8 +197,8 @@ void lcd_update (void)
/* Copy display bitmap to hardware */
for (y = 0; y < LCD_HEIGHT/8; y++)
{
lcd_write_command_ex(LCD_CNTL_PAGE, y);
lcd_write_command_ex(LCD_CNTL_COLUMN, 0);
lcd_write_command_ex(LCD_CNTL_PAGE, y, -1);
lcd_write_command_ex(LCD_CNTL_COLUMN, 0, -1);
lcd_write_command(LCD_CNTL_DATA_WRITE);
lcd_write_data (lcd_framebuffer[y], LCD_WIDTH);
@ -197,8 +228,8 @@ void lcd_update_rect (int x_start, int y,
/* Copy specified rectange bitmap to hardware */
for (; y <= ymax; y++)
{
lcd_write_command_ex(LCD_CNTL_PAGE, y);
lcd_write_command_ex(LCD_CNTL_COLUMN, x_start+xoffset);
lcd_write_command_ex(LCD_CNTL_PAGE, y, -1);
lcd_write_command_ex(LCD_CNTL_COLUMN, x_start+xoffset, -1);
lcd_write_command(LCD_CNTL_DATA_WRITE);
lcd_write_data (&lcd_framebuffer[y][x_start], width);
@ -207,7 +238,7 @@ void lcd_update_rect (int x_start, int y,
void lcd_set_contrast(int val)
{
lcd_write_command_ex(LCD_CNTL_ELECTRIC_VOLUME, val);
lcd_write_command_ex(LCD_CNTL_ELECTRONIC_VOLUME, val, -1);
}
void lcd_set_invert_display(bool yesno)