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Commit fs#9959 by Jack Halpin. Removes delays from the Sansa e200v2 button driver and cleans up the code.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20676 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Giacomelli 2009-04-10 15:19:59 +00:00
parent a137733d10
commit 30b888cb58
2 changed files with 30 additions and 31 deletions
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1
docs/CREDITS
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@ -458,6 +458,7 @@ Johannes Linke
Michaël Burtin Michaël Burtin
Sasha Khamkov Sasha Khamkov
Kai Posadowsky Kai Posadowsky
Jack Halpin
The libmad team The libmad team
The wavpack team The wavpack team

24
firmware/target/arm/as3525/sansa-e200v2/button-e200v2.c
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@ -83,7 +83,7 @@ void clickwheel(unsigned int wheel_value)
if (btn != BUTTON_NONE) if (btn != BUTTON_NONE)
{ {
int repeat = 1; /* assume repeat */ int repeat = 1; /* assume repeat */
unsigned long usec = TIMER1_VALUE; /* WAG!!! and it works!!*/ unsigned long usec = TIMER1_VALUE;
unsigned v = (usec - last_wheel_usec) & 0x7fffffff; unsigned v = (usec - last_wheel_usec) & 0x7fffffff;
v = (v>0) ? 1000000 / v : 0; /* clicks/sec = 1000000 * +clicks/usec */ v = (v>0) ? 1000000 / v : 0; /* clicks/sec = 1000000 * +clicks/usec */
@ -173,7 +173,6 @@ void clickwheel(unsigned int wheel_value)
wheel_delta = 0x7f; wheel_delta = 0x7f;
} }
} }
last_wheel_usec = usec; last_wheel_usec = usec;
} }
old_wheel_value = wheel_value; old_wheel_value = wheel_value;
@ -188,21 +187,19 @@ static short read_dbop(void)
/* Set up dbop for input */ /* Set up dbop for input */
while (!(DBOP_STAT & (1<<10))); /* Wait for fifo to empty */ while (!(DBOP_STAT & (1<<10))); /* Wait for fifo to empty */
DBOP_CTRL |= (1<<19); DBOP_CTRL |= (1<<19);
DBOP_CTRL &= ~(1<<16); /* disable output */ DBOP_CTRL &= ~(1<<16); /* disable output (1:write enabled) */
DBOP_TIMPOL_01 = 0xe167e167; /* Set Timing & Polarity regs 0 & 1 */
DBOP_TIMPOL_01 = 0xe167e167; //11100001011001111110000101100111 DBOP_TIMPOL_23 = 0xe167006e; /* Set Timing & Polarity regs 2 & 3 */
DBOP_TIMPOL_23 = 0xe167006e; //11100001011001110000000001101110
DBOP_CTRL |= (1<<15); /* start read */ DBOP_CTRL |= (1<<15); /* start read */
while (!(DBOP_STAT & (1<<16))); /* wait for valid data */ while (!(DBOP_STAT & (1<<16))); /* wait for valid data */
int delay = 50;
while(delay--); /* small delay to set up read */
_dbop_din = DBOP_DIN; /* now read dbop & store info*/ _dbop_din = DBOP_DIN; /* Read dbop data*/
DBOP_TIMPOL_01 = 0x6e167; /* Reset dbop for output */
DBOP_TIMPOL_23 = 0xa167e06f; DBOP_TIMPOL_01 = 0x6e167; /* Set Timing & Polarity regs 0 & 1 */
DBOP_CTRL |= (1<<16); 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);
return _dbop_din; return _dbop_din;
@ -235,6 +232,7 @@ int button_read_device(void)
if (dbop & (1<<8)) if (dbop & (1<<8))
btn |= BUTTON_POWER; btn |= BUTTON_POWER;
if (!(dbop & (1<<15))) if (!(dbop & (1<<15)))
btn |= BUTTON_REC; btn |= BUTTON_REC;
@ -256,7 +254,7 @@ int button_read_device(void)
GPIOC_DIR &= ~(1<<2|1<<3|1<<4|1<<5|1<<6); GPIOC_DIR &= ~(1<<2|1<<3|1<<4|1<<5|1<<6);
int delay = 50; /* small delay needed to read buttons correctly */ int delay = 2; /* small delay needed to read buttons correctly */
while(delay--); while(delay--);
/* direct GPIO connections */ /* direct GPIO connections */