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Some changes to the UART/button driver - reduce the number of interrupts - more work is needed

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15180 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2007-10-18 05:14:10 +00:00
parent a443614dd2
commit fa1a38e7ce
3 changed files with 86 additions and 84 deletions
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58
firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
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@ -69,6 +69,7 @@ static int touch_to_pixels(short val_x, short val_y)
y = 0;
return (x<<16)|y;
}
void button_init_device(void)
{
last_touch = 0;
@ -102,53 +103,56 @@ int button_get_last_touch(void)
}
#endif
static void remote_heartbeat(void)
{
char data[5] = {0x11, 0x30, 0x11^0x30, 0x11+0x30, '\0'};
uart1_puts(data);
}
int button_read_device(void)
{
char data[5], c;
char c;
int i = 0;
int btn = BUTTON_NONE;
if (last_touch)
btn |= BUTTON_TOUCHPAD;
if ((IO_GIO_BITSET0&0x01) == 0)
btn |= BUTTON_POWER;
uart1_heartbeat();
while (uart1_available())
remote_heartbeat();
while (uart1_getch(&c))
{
if (uart1_getch(&c))
if (i==0 && (c == BUTTON_START_BYTE || c == BUTTON_START_BYTE2) )
{
if (i && (data[0] == BUTTON_START_BYTE || data[0] == BUTTON_START_BYTE2))
i++;
}
else if (i)
{
i++;
if(i==2)
{
data[i++] = c;
}
else if (c == BUTTON_START_BYTE ||
c == BUTTON_START_BYTE2)
{
data[0] = c;
i = 1;
}
if (i == 5)
{
if (data[1]& (1<<7))
if (c& (1<<7))
btn |= BUTTON_RC_HEART;
if (data[1]& (1<<6))
if (c& (1<<6))
btn |= BUTTON_RC_MODE;
if (data[1]& (1<<5))
if (c& (1<<5))
btn |= BUTTON_RC_VOL_DOWN;
if (data[1]& (1<<4))
if (c& (1<<4))
btn |= BUTTON_RC_VOL_UP;
if (data[1]& (1<<3))
if (c& (1<<3))
btn |= BUTTON_RC_REW;
if (data[1]& (1<<2))
if (c& (1<<2))
btn |= BUTTON_RC_FF;
if (data[1]& (1<<1))
if (c& (1<<1))
btn |= BUTTON_RC_DOWN;
if (data[1]& (1<<0))
if (c& (1<<0))
btn |= BUTTON_RC_PLAY;
break;
}
else if(i==5)
{
i=0;
}
}
}