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Working timer

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This commit is contained in:
Bas Wijnen
2009-07-04 16:21:28 +02:00
parent d136712524
commit eb141d7901
12 changed files with 142 additions and 105 deletions
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42
boot-programs/lcd.ccp
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@@ -27,13 +27,13 @@
#define SPDA (1 << 2) //LCD_PS
#define LCD_RET (1 << 3) //LCD_REV //use for lcd reset
// level is in the range [0, 300]
static void set_backlight (unsigned level):
PWM_DUT (0) = level
if level:
static void set_backlight (bool state):
if state:
PWM_DUT (0) = 300
PWM_CTR (0) = 0xbf
GPIO_GPDR (2) |= PWM_ENABLE
else:
PWM_DUT (0) = 0
PWM_CTR (0) = 0x3f
GPIO_GPDR (2) &= ~PWM_ENABLE
@@ -60,9 +60,9 @@ static void write_reg (unsigned reg, unsigned value):
static void lcd_enable ():
udelay (50)
GPIO_GPDR (2) &= ~LCD_RET
mdelay(150)
udelay(150000)
GPIO_GPDR (2) |= LCD_RET
mdelay(10)
udelay(10000)
// These values have been copied from the linux source.
// I have no idea what they do.
write_reg (0x00, 0x03)
@@ -78,24 +78,30 @@ static void lcd_enable ():
write_reg (0x0B, 0xc6)
write_reg (0x0C, 0x20)
write_reg (0x0D, 0x20)
set_backlight (300)
set_backlight (true)
static void lcd_disable ():
write_reg (0x00, 0x03)
set_backlight (0)
set_backlight (false)
static void reset ():
gpio_as_pwm ()
gpio_as_lcd_master ()
GPIO_GPDR (2) &= ~PWM_ENABLE
PWM_CTR (0) = 0x3f
PWM_PER (0) = 300
pwm_set_duty (0, 300)
pwm_set_full_duty (0)
// initialize things.
GPIO_GPIER (2) &= ~(PWM_ENABLE | LCD_RET | SPEN | SPCK | SPDA)
GPIO_GPDIR (2) |= PWM_ENABLE | LCD_RET | SPEN | SPCK | SPDA
udelay (50)
GPIO_GPDR (2) &= ~LCD_RET
mdelay (150)
udelay (150000)
GPIO_GPDR (2) |= LCD_RET
mdelay (10)
udelay (10000)
lcd_enable ()
// For now, support only 16 bpp.
@@ -112,7 +118,7 @@ static void reset ():
CPM_MSCR |= 1 << 7
unsigned pclk = 60 * (800 * 3 + 80) * 500
unsigned pllout = get_pllout ()
unsigned pllout = cpm_get_pllout ()
CPM_CFCR2 = pllout / pclk - 1
unsigned v = pllout / (pclk * 4) - 1
while v < 0xf && pllout / (v + 1) > 150000000:
@@ -121,7 +127,7 @@ static void reset ():
// Start lcd.
CPM_MSCR &= ~(1 << 7)
mdelay (1)
udelay (1000)
int main ():
map_gpio ()
@@ -132,11 +138,11 @@ int main ():
reset ()
while true:
for unsigned i = 0; i <= 300; i += 30:
set_backlight (i)
kdebug (0)
mdelay (50)
schedule ()
set_backlight (false)
kdebug (0)
set_backlight (true)
kdebug (0)
schedule ()
while true:
Message msg
@@ -144,7 +150,7 @@ int main ():
continue
switch msg.protected_data:
case LCD_BACKLIGHT:
set_backlight (msg.data[0] > 300 ? 300 : msg.data[0])
set_backlight (msg.data[0])
break
case LCD_RESET:
reset ()