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FS#10120 - fuze/e200v2: poll the wheel more often (every 5ms). This makes the scrollwheel behavior nearly perfect (decent acceleration, no direction changes if you turn to fast).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20699 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2009-04-13 10:28:06 +00:00
parent 65aa187aef
commit e5e41c3a82
3 changed files with 55 additions and 32 deletions
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16
firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c
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@ -60,7 +60,7 @@ bool button_hold(void)
return hold_button;
}
void clickwheel(unsigned int wheel_value)
static void scrollwheel(short dbop_din)
{
static const unsigned char wheel_tbl[2][4] =
{
@ -75,6 +75,10 @@ void clickwheel(unsigned int wheel_value)
/* did the wheel value change? */
unsigned int btn = BUTTON_NONE;
unsigned wheel_value = dbop_din & (1<<13|1<<14);
wheel_value >>= 13;
if (old_wheel_value == wheel_tbl[0][wheel_value])
btn = BUTTON_SCROLL_FWD;
else if (old_wheel_value == wheel_tbl[1][wheel_value])
@ -178,7 +182,7 @@ void clickwheel(unsigned int wheel_value)
old_wheel_value = wheel_value;
}
static short read_dbop(void)
short button_read_dbop(void)
{
/*write a red pixel */
if (!lcd_button_support())
@ -186,7 +190,7 @@ static short read_dbop(void)
/* Set up dbop for input */
while (!(DBOP_STAT & (1<<10))); /* Wait for fifo to empty */
DBOP_CTRL |= (1<<19);
DBOP_CTRL |= (1<<19); /* Tri-state DBOP on read cycle */
DBOP_CTRL &= ~(1<<16); /* disable output (1:write enabled) */
DBOP_TIMPOL_01 = 0xe167e167; /* Set Timing & Polarity regs 0 & 1 */
DBOP_TIMPOL_23 = 0xe167006e; /* Set Timing & Polarity regs 2 & 3 */
@ -200,8 +204,9 @@ static short read_dbop(void)
DBOP_TIMPOL_01 = 0x6e167; /* Set Timing & Polarity regs 0 & 1 */
DBOP_TIMPOL_23 = 0xa167e06f; /* Set Timing & Polarity regs 2 & 3 */
DBOP_CTRL |= (1<<16); /* Enable output (0:write disable) */
DBOP_CTRL &= ~(1<<19);
DBOP_CTRL &= ~(1<<19); /* Tri-state when no active write */
scrollwheel(_dbop_din);
return _dbop_din;
}
@ -217,7 +222,7 @@ int button_read_device(void)
{
int btn = BUTTON_NONE;
/* read buttons from dbop */
short dbop = read_dbop();
short dbop = button_read_dbop();
/* hold button */
if(dbop & (1<<12))
@ -239,7 +244,6 @@ int button_read_device(void)
/* handle wheel */
int wheel_value = dbop & (1<<13|1<<14);
wheel_value >>= 13;
clickwheel(wheel_value);
/* Set afsel, so that we can read our buttons */
GPIOC_AFSEL &= ~(1<<2|1<<3|1<<4|1<<5|1<<6);