Add GINPUT Dial, simplify GWIN input assignment

Added GINPUT Dial support and a driver that uses GADC to read the dial.
Added support for Dial inputs to the GWIN slider.
Updated the slider demo for Dial Inputs.
Simplified the assigning of inputs to GWIN "widgets" button and slider.
Updated the demo's to match the new input to button assignment.

1 files changed, 166 insertions, 36 deletions

diff --git a/src/ginput/dial.c b/src/ginput/dial.c
index 60bc9ae8..2f572cf8 100644
--- a/src/ginput/dial.c
+++ b/src/ginput/dial.c
@@ -1,36 +1,166 @@
-/*

-    ChibiOS/GFX - Copyright (C) 2012, 2013

-                 Joel Bodenmann aka Tectu <joel@unormal.org>

-

-    This file is part of ChibiOS/GFX.

-

-    ChibiOS/GFX is free software; you can redistribute it and/or modify

-    it under the terms of the GNU General Public License as published by

-    the Free Software Foundation; either version 3 of the License, or

-    (at your option) any later version.

-

-    ChibiOS/GFX is distributed in the hope that it will be useful,

-    but WITHOUT ANY WARRANTY; without even the implied warranty of

-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-    GNU General Public License for more details.

-

-    You should have received a copy of the GNU General Public License

-    along with this program.  If not, see <http://www.gnu.org/licenses/>.

-*/

-

-/**

- * @file    src/ginput/dial.c

- * @brief   GINPUT dial code.

- *

- * @defgroup Dial Dial

- * @ingroup GINPUT

- * @{

- */

-#include "ch.h"

-#include "hal.h"

-#include "gfx.h"

-

-#if (GFX_USE_GINPUT && GINPUT_NEED_DIAL) || defined(__DOXYGEN__)

-	#error "GINPUT: GINPUT_NEED_DIAL - Not Implemented Yet"

-#endif /* GFX_USE_GINPUT && GINPUT_NEED_DIAL */

-/** @} */

+/*
+    ChibiOS/GFX - Copyright (C) 2012, 2013
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS/GFX.
+
+    ChibiOS/GFX is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/GFX is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    src/ginput/dial.c
+ * @brief   GINPUT dial code.
+ *
+ * @defgroup Dial Dial
+ * @ingroup GINPUT
+ * @{
+ */
+#include "ch.h"
+#include "hal.h"
+#include "gfx.h"
+
+#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
+
+#include "ginput/lld/dial.h"
+
+static GTIMER_DECL(DialTimer);
+static struct DialStatus_t {
+	uint16_t	sensitivity;
+	uint16_t	lastvalue;
+	uint16_t	max;
+} DialStatus[GINPUT_DIAL_NUM_PORTS];
+
+// The reading callback function
+static void DialCallback(uint16_t instance, uint16_t rawvalue) {
+	struct DialStatus_t *pds;
+	GSourceListener		*psl;
+	GEventDial			*pe;
+
+	/* Get the information we need */
+	pds = DialStatus+instance;
+
+	/* Range scale - if needed */
+	if (pds->max != GINPUT_DIAL_MAX_VALUE)
+		rawvalue = (uint16_t)((uint32_t)rawvalue * pds->max / GINPUT_DIAL_MAX_VALUE);
+
+	/* Forget about changes below our sensitivity threshold */
+	if (rawvalue >= pds->lastvalue) {
+		if (rawvalue - pds->lastvalue < pds->sensitivity) return;
+	} else {
+		if (pds->lastvalue - rawvalue < pds->sensitivity) return;
+	}
+
+	/* Save the value */
+	pds->lastvalue = rawvalue;
+
+	// Send the event to the listeners that are interested.
+	psl = 0;
+	while ((psl = geventGetSourceListener((GSourceHandle)(DialStatus+instance), psl))) {
+		if (!(pe = (GEventDial *)geventGetEventBuffer(psl)))
+			continue;
+		pe->type = GEVENT_DIAL;
+		pe->instance = instance;
+		pe->value = pds->lastvalue;
+		geventSendEvent(psl);
+	}
+}
+
+GSourceHandle ginputGetDial(uint16_t instance) {
+	struct DialStatus_t *pds;
+
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return 0;
+
+	// Do we need to initialise the dial subsystem?
+	if (!gtimerIsActive(&DialTimer)) {
+		for(pds = DialStatus; pds < DialStatus+GINPUT_DIAL_NUM_PORTS; pds++) {
+			pds->max = GINPUT_DIAL_MAX_VALUE;
+#if GINPUT_DIAL_MAX_VALUE < 100
+			pds->sensitivity = 1;
+#else
+			pds->sensitivity = GINPUT_DIAL_MAX_VALUE/100;
+#endif
+			pds->lastvalue = 0;
+		}
+		ginput_lld_dial_init();
+		gtimerStart(&DialTimer, (GTimerFunction)ginput_lld_dial_poll, DialCallback, TRUE, GINPUT_DIAL_POLL_PERIOD);
+	}
+
+	// OK - return this input
+	return (GSourceHandle)(DialStatus+instance);
+}
+
+void ginputResetDialRange(uint16_t instance) {
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return;
+
+	ginputSetDialRange(instance, GINPUT_DIAL_MAX_VALUE);
+}
+
+uint16_t ginputGetDialRange(uint16_t instance) {
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return 0;
+
+	return DialStatus[instance].max;
+}
+
+void ginputSetDialRange(uint16_t instance, uint16_t max) {
+	struct DialStatus_t *pds;
+
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return;
+
+	pds = DialStatus+instance;
+
+	// Rescale the last value and the sensitivity
+	if (max != pds->max) {
+		pds->lastvalue = (uint16_t)((uint32_t)pds->lastvalue * max / pds->max);
+		pds->sensitivity = (uint16_t)((uint32_t)pds->sensitivity * max / pds->max);
+		pds->max = max;
+	}
+}
+
+/**
+ * @brief	Set the level change required before a dial even is generated (threshold)
+ * @note	This is done after range scaling
+ *
+ * @param[in] instance	The ID of the dial input instance
+ * @param[in] diff		The amount of level changes
+ */
+void ginputSetDialSensitivity(uint16_t instance, uint16_t diff) {
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return;
+
+	DialStatus[instance].sensitivity = diff;
+}
+
+/**
+ * @brief	Get the current dial status
+ *
+ * @param[in] instance	The ID of the dial input instance
+ * @param[in] pdial		The dial event struct
+ *
+ * @return	Returns FALSE on an error (eg invalid instance)
+ */
+bool_t ginputGetDialStatus(uint16_t instance, GEventDial *pdial) {
+	if (instance >= GINPUT_DIAL_NUM_PORTS)
+		return FALSE;
+	pdial->type = GEVENT_DIAL;
+	pdial->instance = instance;
+	pdial->value = DialStatus[instance].lastvalue;
+	return TRUE;
+}
+
+#endif /* GFX_USE_GINPUT && GINPUT_NEED_DIAL */
+/** @} */