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init the LCD, needed for cold start (from flash)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3762 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jörg Hohensohn 2003-06-26 06:49:34 +00:00
parent 9fb2d34447
commit d3fba4644d
1 changed files with 22 additions and 0 deletions
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22
firmware/drivers/lcd-recorder.c
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@ -44,12 +44,16 @@
#define LCD_SET_ENTIRE_DISPLAY_ON ((char)0xA5)
#define LCD_SET_NORMAL_DISPLAY ((char)0xA6)
#define LCD_SET_REVERSE_DISPLAY ((char)0xA7)
#define LCD_SET_MULTIPLEX_RATIO ((char)0xA8)
#define LCD_SET_BIAS_TC_OSC ((char)0xA9)
#define LCD_SET_1OVER4_BIAS_RATIO ((char)0xAA)
#define LCD_SET_INDICATOR_OFF ((char)0xAC)
#define LCD_SET_INDICATOR_ON ((char)0xAD)
#define LCD_SET_DISPLAY_OFF ((char)0xAE)
#define LCD_SET_DISPLAY_ON ((char)0xAF)
#define LCD_SET_PAGE_ADDRESS ((char)0xB0)
#define LCD_SET_COM_OUTPUT_SCAN_DIRECTION ((char)0xC0)
#define LCD_SET_TOTAL_FRAME_PHASES ((char)0xD2)
#define LCD_SET_DISPLAY_OFFSET ((char)0xD3)
#define LCD_SET_READ_MODIFY_WRITE_MODE ((char)0xE0)
#define LCD_SOFTWARE_RESET ((char)0xE2)
@ -128,6 +132,24 @@ void lcd_init (void)
PBCR2 &= 0xff00; /* MD = 00 */
PBIOR |= 0x000f; /* IOR = 1 */
/* inits like the original firmware */
lcd_write(true, LCD_SOFTWARE_RESET);
lcd_write(true, LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO + 4);
lcd_write(true, LCD_SET_1OVER4_BIAS_RATIO + 0); /* force 1/4 bias: 0 */
lcd_write(true, LCD_SET_POWER_CONTROL_REGISTER + 7); /* power control register: op-amp=1, regulator=1, booster=1 */
lcd_write(true, LCD_SET_DISPLAY_ON);
lcd_write(true, LCD_SET_NORMAL_DISPLAY);
lcd_write(true, LCD_SET_SEGMENT_REMAP + 1); /* mirror horizontal: 1 */
lcd_write(true, LCD_SET_COM_OUTPUT_SCAN_DIRECTION + 8); /* mirror vertical: 1 */
lcd_write(true, LCD_SET_DISPLAY_START_LINE + 0);
#if 0 /* done later, depending on h/w mask bit and settings */
lcd_write(true, LCD_SET_CONTRAST_CONTROL_REGISTER);
lcd_write(true, 0xF1); /* contrast set to 49/64 */
#endif
lcd_write(true, LCD_SET_PAGE_ADDRESS);
lcd_write(true, LCD_SET_LOWER_COLUMN_ADDRESS + 0);
lcd_write(true, LCD_SET_HIGHER_COLUMN_ADDRESS + 0);
lcd_clear_display();
lcd_update();
create_thread(scroll_thread, scroll_stack,