merged from touchpad

4 files changed, 247 insertions, 0 deletions

diff --git a/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.c b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.c
new file mode 100644
index 00000000..4dc29dbe
--- /dev/null
+++ b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.c
@@ -0,0 +1,126 @@
+/*

+    ChibiOS/RT - Copyright (C) 2012

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

+

+    This file is part of ChibiOS-LCD-Driver.

+

+    ChibiOS-LCD-Driver 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-LCD-Driver 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    touchpadXPT2046/touchpad_lld.c

+ * @brief   Touchpad Driver subsystem low level driver source.

+ *

+ * @addtogroup TOUCHPAD

+ * @{

+ */

+

+#include "ch.h"

+#include "hal.h"

+#include "touchpad.h"

+

+#if HAL_USE_TOUCHPAD || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Driver local definitions.                                                 */

+/*===========================================================================*/

+

+#ifdef UNUSED

+#elif defined(__GNUC__)

+# define UNUSED(x) UNUSED_ ## x __attribute__((unused))

+#elif defined(__LCLINT__)

+# define UNUSED(x) /*@unused@*/ x

+#else

+# define UNUSED(x) x

+#endif

+

+/*===========================================================================*/

+/* Driver exported variables.                                                */

+/*===========================================================================*/

+

+#if !defined(__DOXYGEN__)

+	TOUCHPADDriver Touchpad;

+#endif

+

+/*===========================================================================*/

+/* Driver local variables.                                                   */

+/*===========================================================================*/

+static const SPIConfig spicfg = {

+	NULL,

+	TP_CS_PORT,

+	TP_CS,

+	SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0,

+};

+

+/*===========================================================================*/

+/* Driver local functions.                                                   */

+/*===========================================================================*/

+

+#include "xpt2046_lld.c.h"

+

+/*===========================================================================*/

+/* Driver interrupt handlers.                                                */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver exported functions.                                                */

+/*===========================================================================*/

+

+/* ---- Required Routines ---- */

+

+/**

+ * @brief   Low level Touchpad driver initialization.

+ *

+ * @notapi

+ */

+void tp_lld_init(TOUCHPADDriver *tp) {

+	spiStart(tp->spid, &spicfg);

+}

+

+/**

+ * @brief   Reads out the X direction.

+ *

+ * @notapi

+ */

+uint16_t tp_lld_read_x(void) {

+	/* ToDo */

+	return 42;

+}

+

+/*

+ * @brief	Reads out the X direction.

+ *

+ * @notapi

+ */

+uint16_t tp_lld_read_y(void) {

+	/* ToDo */

+	return 42;

+}

+

+/* ---- Optional Routines ---- */

+#if TOUCHPAD_PRESSURE || defined(__DOXYGEN__)

+	/*

+	 * @brief	Reads out the Z direction / pressure.

+	 *

+	 * @notapi

+	 */

+	uint16_t tp_lld_read_z(void) {

+		/* ToDo */

+		return 42;

+	}

+#endif

+

+#endif /* HAL_USE_TOUCHPAD */

+/** @} */

+

diff --git a/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.mk b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.mk
new file mode 100644
index 00000000..9409795b
--- /dev/null
+++ b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.mk
@@ -0,0 +1,6 @@
+# List the required driver.

+HALSRC += $(LCDLIB)/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld.c

+

+# Required include directories

+HALINC += $(LCDLIB)/halext/drivers/touchpad/touchpadXPT2046

+

diff --git a/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld_config.h b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld_config.h
new file mode 100644
index 00000000..52493836
--- /dev/null
+++ b/halext/drivers/touchpad/touchpadXPT2046/touchpad_lld_config.h
@@ -0,0 +1,43 @@
+/*

+    ChibiOS/RT - Copyright (C) 2012

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

+

+    This file is part of ChibiOS-LCD-Driver.

+

+    ChibiOS-LCD-Driver 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-LCD-Driver 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   touchpadXPT2046/touchpad_lld_config.h

+ * @brief   Touchppad Driver subsystem low level driver.

+ *

+ * @addtogroup TOUCHPAD

+ * @{

+ */

+

+#ifndef _TOUCHPAD_LLD_CONFIG_H

+#define _TOUCHPAD_LLD_CONFIG_H

+

+#if HAL_USE_TOUCHPAD || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Driver hardware support.                                                  */

+/*===========================================================================*/

+

+#define TOUCHPAD_PRESSURE			TRUE

+

+#endif	/* HAL_USE_TOUCHPAD */

+

+#endif	/* _TOUCHPAD_LLD_CONFIG_H */

+/** @} */

diff --git a/halext/drivers/touchpad/touchpadXPT2046/xpt2046_lld.c.h b/halext/drivers/touchpad/touchpadXPT2046/xpt2046_lld.c.h
new file mode 100644
index 00000000..2b33034a
--- /dev/null
+++ b/halext/drivers/touchpad/touchpadXPT2046/xpt2046_lld.c.h
@@ -0,0 +1,72 @@
+/*
+    ChibiOS-LCD-Driver - Copyright (C) 2012
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS-LCD-Driver.
+
+    ChibiOS-LCD-Driver 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-LCD-Driver 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/>.
+*/
+
+#ifndef _XPT2046_H
+#define _XPT2046_H
+
+#include "ch.h"
+#include "hal.h"
+
+#define TP_CS_HIGH      palSetPad(TP_CS_PORT, TP_CS)
+#define TP_CS_LOW       palClearPad(TP_CS_PORT, TP_CS)
+
+__inline uint16_t lld_tpReadX(void) {
+    uint8_t txbuf[1];
+    uint8_t rxbuf[2];
+    uint16_t x;
+
+    txbuf[0] = 0xd0;
+    TP_CS_LOW;
+    spiSend(&SPID1, 1, txbuf);
+    spiReceive(&SPID1, 2, rxbuf);
+    TP_CS_HIGH;
+
+    x = rxbuf[0] << 4;
+    x |= rxbuf[1] >> 4;
+    
+    return x;
+}
+
+__inline uint16_t lld_tpReadY(void) {
+    uint8_t txbuf[1];
+    uint8_t rxbuf[2];
+    uint16_t y;
+
+    txbuf[0] = 0x90;
+    TP_CS_LOW;
+    spiSend(&SPID1, 1, txbuf);
+    spiReceive(&SPID1, 2, rxbuf);
+    TP_CS_HIGH;
+
+    y = rxbuf[0] << 4;
+    y |= rxbuf[1] >> 4;
+
+    return y;
+}
+
+__inline uint16_t lld_tpReadZ(void) {
+	/* ToDo */
+
+    return 0;
+}
+
+
+#endif /* _XPT2046_H */
+