Added my own evdev handler for dpad/dpadbuttons/nubs, works fantastic

Makefile

@@ -21,12 +21,12 @@ LIB = libpnd.a
 SOLIB = libpnd.so.1         # canonicle name
 SOLIB1 = libpnd.so.1.0.1    # versioned name
 XMLOBJ = lib/tinyxml/tinystr.o lib/tinyxml/tinyxml.o lib/tinyxml/tinyxmlerror.o lib/tinyxml/tinyxmlparser.o
-ALLOBJ = pnd_conf.o pnd_container.o pnd_discovery.o pnd_pxml.o pnd_notify.o pnd_locate.o pnd_tinyxml.o pnd_pndfiles.o pnd_apps.o pnd_utility.o pnd_desktop.o pnd_io_gpio.o pnd_logger.o pnd_dbusnotify.o pnd_device.o
+ALLOBJ = pnd_conf.o pnd_container.o pnd_discovery.o pnd_pxml.o pnd_notify.o pnd_locate.o pnd_tinyxml.o pnd_pndfiles.o pnd_apps.o pnd_utility.o pnd_desktop.o pnd_io_gpio.o pnd_io_ioctl.o pnd_io_evdev.o pnd_logger.o pnd_dbusnotify.o pnd_device.o
 
-all: ${SOLIB} ${LIB} conftest discotest notifytest pndnotifyd rawpxmltest pndvalidator loggertest dbusnotifytest pnd_run pndevmapperd pnd_info evtest mmenu mmwrapper
+all: ${SOLIB} ${LIB} conftest discotest evdevtest notifytest pndnotifyd rawpxmltest pndvalidator loggertest dbusnotifytest pnd_run pndevmapperd pnd_info evtest mmenu mmwrapper
 
 clean:
-	${RM} -f ${ALLOBJ} ${XMLOBJ} ${LIB} ${SOLIB1} locatetest.o bin/locatetest conftest.o bin/conftest discotest.o bin/discotest dbusnotifytest.o bin/dbusnotifytest loggertest.o bin/loggertest bin/notifytest notifytest.o bin/rawpxmltest rawpxmltest.o bin/pnd_run pnd_run.o pnd_info.o bin/pnd_info bin/pndevmapperd pndevmapperd.o bin/pndnotifyd pndnotifyd.o ${SOLIB} testdata/dotdesktop/*.desktop testdata/menu/*.desktop testdata/apps/*.pnd testdata/dotdesktop/*.png deployment/usr/lib/libpnd* deployment/usr/bin/pndnotifyd deployment/usr/bin/pnd_run deployment/usr/bin/pnd_info deployment/usr/pandora/scripts/* deployment/etc/sudoers deployment/etc/init.d/pndnotifyd bin/pndvalidator pndvalidator.o deployment/usr/bin/pndevmapperd testdata/menuicons/* evtest.o bin/evtest bin/mmenu bin/mmwrapper mmenu.o mmwrapper.o deployment/usr/bin/mmenu deployment/usr/bin/mmwrapper mmcache.o mmui.o mmcat.o
+	${RM} -f ${ALLOBJ} ${XMLOBJ} ${LIB} ${SOLIB1} locatetest.o bin/locatetest conftest.o bin/conftest discotest.o evdevtest.o bin/evdevtest bin/discotest dbusnotifytest.o bin/dbusnotifytest loggertest.o bin/loggertest bin/notifytest notifytest.o bin/rawpxmltest rawpxmltest.o bin/pnd_run pnd_run.o pnd_info.o bin/pnd_info bin/pndevmapperd pndevmapperd.o bin/pndnotifyd pndnotifyd.o ${SOLIB} testdata/dotdesktop/*.desktop testdata/menu/*.desktop testdata/apps/*.pnd testdata/dotdesktop/*.png deployment/usr/lib/libpnd* deployment/usr/bin/pndnotifyd deployment/usr/bin/pnd_run deployment/usr/bin/pnd_info deployment/usr/pandora/scripts/* deployment/etc/sudoers deployment/etc/init.d/pndnotifyd bin/pndvalidator pndvalidator.o deployment/usr/bin/pndevmapperd testdata/menuicons/* evtest.o bin/evtest bin/mmenu bin/mmwrapper mmenu.o mmwrapper.o deployment/usr/bin/mmenu deployment/usr/bin/mmwrapper mmcache.o mmui.o mmcat.o
 	${RM} -rf deployment/media deployment/etc/pandora/mmenu
 	find . -name "*~*" -exec rm {} \; -print
 
@@ -114,6 +114,9 @@ conftest:	conftest.o ${LIB}
 discotest:	discotest.o ${LIB}
 	${CC} -lstdc++ -o bin/discotest discotest.o libpnd.a
 
+evdevtest:	evdevtest.o ${LIB}
+	${CC} -lstdc++ -o bin/evdevtest evdevtest.o -static libpnd.a
+
 notifytest:	notifytest.o ${LIB}
 	${CC} -lstdc++ -o bin/notifytest notifytest.o libpnd.a
 

include/pnd_device.h

@@ -31,6 +31,14 @@ extern "C" {
 #define PND_DEVICE_LED_BT      "/sys/class/leds/pandora::bluetooth"
 #define PND_DEVICE_LED_SUFFIX_BRIGHTNESS "/brightness"
 
+// device names
+#define PND_EVDEV_NUB1    "vsense66"
+#define PND_EVDEV_NUB2    "vsense67"
+#define PND_EVDEV_KEYPAD  "omap_twl4030keypad"
+#define PND_EVDEV_GPIO    "gpio-keys"
+#define PND_EVDEV_TS      "ADS784x Touchscreen"
+#define PND_EVDEV_POWER   "triton2-pwrbutton"
+
 /* utility
  */
 unsigned char pnd_device_open_write_close ( char *name, char *v );

include/pnd_io_evdev.h

@@ -0,0 +1,69 @@
+
+#ifndef h_pnd_io_evdev_h
+#define h_pnd_io_evdev_h
+
+// some handy routines for open/close/monitor of the evdev controller devices ..
+// ie: so you can watch the analogs and d-pads pretty easily, for when you don't
+// want to rely on SDL or whatever
+//
+// this technique works fine for nubs, d-pads, even keyboard and various buttons
+// this API may only handle some parts for now, but you coudl easily duplicate some of the
+// code to extend for adding keyboard.
+//
+// dpad, nubs, start/select/pandora, triggers all work fine as of Mar 2010.
+//
+
+// can get analog nubs, d-pads, or even keyboard A-Z type keys here
+// some special ones like Power are on other devices than you'd expect, but all good
+
+typedef enum {
+  pnd_evdev_dpads = 0,   // for d-pad and d-pad-buttons
+  pnd_evdev_nub1,
+  pnd_evdev_nub2,
+  pnd_evdev_power,
+  pnd_evdev_max
+} pnd_evdev_e;
+
+unsigned char pnd_evdev_open ( pnd_evdev_e device ); // returns 0 on error, >0 success
+void pnd_evdev_close ( pnd_evdev_e device );
+void pnd_evdev_closeall ( void );
+int pnd_evdev_get_fd ( unsigned char handle ); // obtain actual fd from handle
+int pnd_evdev_open_by_name ( char *devname ); // internal but handy; see device names in pnd_device.h
+
+typedef enum {
+  pnd_evdev_left = (1<<0),     // these are bitmask; ex: (pnd_evdev_left | pnd_evdev_up)
+  pnd_evdev_right = 1<<1,
+  pnd_evdev_up = 1<<2,
+  pnd_evdev_down = 1<<3,
+  pnd_evdev_x = 1<<4,
+  pnd_evdev_y = 1<<5,
+  pnd_evdev_a = 1<<6,
+  pnd_evdev_b = 1<<7,
+  pnd_evdev_ltrigger = 1<<8,
+  pnd_evdev_rtrigger = 1<<9,
+  pnd_evdev_start = 1<<10,
+  pnd_evdev_select = 1<<11,
+  pnd_evdev_pandora = 1<<12
+} pnd_evdev_dpad_e;
+
+typedef struct {
+  int x;
+  int y;
+} pnd_nubstate_t;
+
+// catchup() - catch up any pending events
+// return 0 if something weird happened, like device error; in that case, closeall and reopen?
+// return 1 if looks like state is all up to date now (ie: no more events)
+unsigned char pnd_evdev_catchup ( unsigned char blockp ); // will do all open devices
+
+// fetch dpad state -- a mask of what buttons are pressed currently
+// return -1 if device not open
+int pnd_evdev_dpad_state ( pnd_evdev_e device ); // returns bitmask of pnd_evdev_dpad_e
+
+// try to obtain X/Y axis for the requested nub
+// r_nubstate best not be null or the behaviour is undefined. (Well, it is defined .. *catch fire*)
+// return 1 when state is copied over
+// return -1 when device not opened
+int pnd_evdev_nub_state ( pnd_evdev_e nubdevice, pnd_nubstate_t *r_nubstate );
+
+#endif

include/pnd_io_ioctl.h

@@ -0,0 +1,9 @@
+#ifndef h_pnd_io_ioctl_h
+#define h_pnd_io_ioctl_h
+
+// this is a simple 'is key pressed?' type routine, using standard ioctl; if you don't want to
+// monitor the events and just ewant to see whats up, this can be handy.
+// returns -1 on error, 0 for 'not down', and >0 for 'is down'
+int pnd_is_key_down ( int fd, int key );
+
+#endif