From f4702040d64e86d717a6af80cd4e910f15407a51 Mon Sep 17 00:00:00 2001 From: Linus Nielsen Feltzing Date: Thu, 27 Jan 2005 00:00:55 +0000 Subject: iRiver: Proper LCD init git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5669 a1c6a512-1295-4272-9138-f99709370657 --- firmware/drivers/lcd-h100.c | 55 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 43 insertions(+), 12 deletions(-) (limited to 'firmware') diff --git a/firmware/drivers/lcd-h100.c b/firmware/drivers/lcd-h100.c index 4330a5d8ca..82537e439b 100644 --- a/firmware/drivers/lcd-h100.c +++ b/firmware/drivers/lcd-h100.c @@ -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) -- cgit v1.2.3