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authorJonathan Gordon <rockbox@jdgordon.info>2007-09-30 11:15:14 +0000
committerJonathan Gordon <rockbox@jdgordon.info>2007-09-30 11:15:14 +0000
commite108964ec08f70a46e1db430288283d68a906c56 (patch)
tree22c789576822138974a2c171f7c648cc3a1d99b1 /firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
parentef1c52fa4390075000db585e5833324b38329f40 (diff)
downloadrockbox-e108964ec08f70a46e1db430288283d68a906c56.tar.gz
rockbox-e108964ec08f70a46e1db430288283d68a906c56.zip
IRQ driven touchpad driver, crude but working
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14914 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c')
-rw-r--r--firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c39
1 files changed, 38 insertions, 1 deletions
diff --git a/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c b/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
index 1d0d2714a8..b57680afb4 100644
--- a/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
+++ b/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
@@ -17,6 +17,8 @@
*
****************************************************************************/
+/* this file also handles the touch screen driver interface */
+
#include "config.h"
#include "cpu.h"
#include "system.h"
@@ -27,23 +29,47 @@
#include "system.h"
#include "backlight-target.h"
#include "uart-target.h"
+#include "tsc2100.h"
#define BUTTON_TIMEOUT 50
#define BUTTON_START_BYTE 0xF0
#define BUTTON_START_BYTE2 0xF4 /* not sure why, but sometimes you get F0 or F4, */
/* but always the same one for the session? */
-
+static short last_x, last_y, last_z1, last_z2; /* for the touch screen */
+static int last_touch;
void button_init_device(void)
{
+ last_touch = 0;
/* GIO is the power button, set as input */
IO_GIO_DIR0 |= 0x01;
+
+
+ /* Enable the touchscreen interrupt */
+ IO_INTC_EINT2 |= (1<<3); /* IRQ_GIO14 */
+#if 0
+ tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS,
+ TSADC_PSTCM|
+ (0x2<<TSADC_ADSCM_SHIFT)| /* scan x,y,z1,z2 */
+ (0x1<<TSADC_RESOL_SHIFT) /* 8 bit resolution */
+ );
+ /* doesnt work for some reason...
+ setting to 8bit would probably be better than the 12bit currently */
+#endif
}
inline bool button_hold(void)
{
return false;
}
+#ifdef BOOTLOADER
+int button_get_last_touch(void)
+{
+ int ret_val = last_touch;
+ last_touch = 0;
+ return ret_val;
+}
+#endif
int button_read_device(void)
{
@@ -51,6 +77,9 @@ int button_read_device(void)
int i = 0;
int btn = BUTTON_NONE;
+ if (last_touch)
+ btn |= BUTTON_TOUCHPAD;
+
if ((IO_GIO_BITSET0&0x01) == 0)
btn |= BUTTON_POWER;
@@ -94,3 +123,11 @@ int button_read_device(void)
}
return btn;
}
+
+void GIO14(void)
+{
+ tsc2100_read_values(&last_x, &last_y,
+ &last_z1, &last_z2);
+ last_touch = (last_x<<16)|last_y;
+ IO_INTC_IRQ2 = (1<<3);
+}