diff options
| author | Keith Packard <keithp@keithp.com> | 2012-06-21 09:39:10 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-06-21 09:39:10 -0700 |
| commit | 419a801131c1034f1fa149a67850290431cbda72 (patch) | |
| tree | 3b89e21a030d5ee8f6ed3be07c850bea53847c7e /src/stm/ao_lcd_stm.c | |
| parent | 611f37607fadcdc9908d67456f844a452ad4a87a (diff) | |
altos: Configure STM LCD driver for giant LCD digits
These devices require static mode.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm/ao_lcd_stm.c')
| -rw-r--r-- | src/stm/ao_lcd_stm.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/stm/ao_lcd_stm.c b/src/stm/ao_lcd_stm.c index f68cf165..b1909444 100644 --- a/src/stm/ao_lcd_stm.c +++ b/src/stm/ao_lcd_stm.c @@ -328,10 +328,14 @@ ao_lcd_stm_init(void) } } + /* Disable the LCD */ + stm_lcd.cr = 0; + /* duty cycle 1/3, radio 352, frame rate about 33Hz */ - stm_lcd.fcr = ((STM_LCD_FCR_PS_1 << STM_LCD_FCR_PS) | - (STM_LCD_FCR_DIV_31 << STM_LCD_FCR_DIV) | + stm_lcd.fcr = ((STM_LCD_FCR_PS_16 << STM_LCD_FCR_PS) | + (STM_LCD_FCR_DIV_20 << STM_LCD_FCR_DIV) | (4 << STM_LCD_FCR_CC) | + (0 << STM_LCD_FCR_DEAD) | (4 << STM_LCD_FCR_PON) | (0 << STM_LCD_FCR_UDDIE) | (0 << STM_LCD_FCR_SOFIE) | @@ -343,8 +347,8 @@ ao_lcd_stm_init(void) /* Program desired BIAS in LCD_CR */ /* Enable mux seg */ /* Internal voltage source */ - stm_lcd.cr = ((STM_LCD_CR_DUTY_1_4 << STM_LCD_CR_DUTY) | - (STM_LCD_CR_BIAS_1_3 << STM_LCD_CR_BIAS) | + stm_lcd.cr = ((STM_LCD_CR_DUTY_STATIC << STM_LCD_CR_DUTY) | + (STM_LCD_CR_BIAS_1_2 << STM_LCD_CR_BIAS) | (0 << STM_LCD_CR_VSEL) | (1 << STM_LCD_CR_MUX_SEG)); |