diff options
| author | Joel Bodenmann <joel@unormal.org> | 2012-11-30 00:21:46 +0100 |
|---|---|---|
| committer | Joel Bodenmann <joel@unormal.org> | 2012-11-30 00:21:46 +0100 |
| commit | ef13b27a790568338f3784e13c9e4a125c16222f (patch) | |
| tree | 2e9bd844eb1c6b0b4548b282682f3bba40620556 /drivers/ginput/touch | |
| parent | a976c449a35429683fdd3f5ad38dc5b657060c79 (diff) | |
| download | uGFX-ef13b27a790568338f3784e13c9e4a125c16222f.tar.gz uGFX-ef13b27a790568338f3784e13c9e4a125c16222f.tar.bz2 uGFX-ef13b27a790568338f3784e13c9e4a125c16222f.zip | |
added XPT2046 ginput driver
Diffstat (limited to 'drivers/ginput/touch')
6 files changed, 387 insertions, 0 deletions
diff --git a/drivers/ginput/touch/XPT2046/ginput_lld.mk b/drivers/ginput/touch/XPT2046/ginput_lld.mk new file mode 100644 index 00000000..c513d54c --- /dev/null +++ b/drivers/ginput/touch/XPT2046/ginput_lld.mk @@ -0,0 +1,5 @@ +# List the required driver.
+GFXSRC += $(GFXLIB)/drivers/ginput/touch/XPT2046/ginput_lld_mouse.c
+
+# Required include directories
+GFXINC += $(GFXLIB)/drivers/ginput/touchXPT20466
diff --git a/drivers/ginput/touch/XPT2046/ginput_lld_mouse.c b/drivers/ginput/touch/XPT2046/ginput_lld_mouse.c new file mode 100644 index 00000000..1e60611d --- /dev/null +++ b/drivers/ginput/touch/XPT2046/ginput_lld_mouse.c @@ -0,0 +1,143 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2012
+ 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 drivers/ginput/touch/XPT2046/ginput_lld_mouse.c
+ * @brief GINPUT Touch low level driver source for the XPT2046.
+ *
+ * @addtogroup GINPUT_MOUSE
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if (GFX_USE_GINPUT && GINPUT_NEED_MOUSE) /*|| defined(__DOXYGEN__)*/
+
+#include "gdisp.h" /* for coord_t */
+#include "gevent.h"
+#include "ginput/ginput_mouse.h" /* for GINPUT_TOUCH_PRESSED */
+#include "lld/ginput/mouse.h"
+
+#if defined(GINPUT_MOUSE_USE_CUSTOM_BOARD) && GINPUT_MOUSE_USE_CUSTOM_BOARD
+ #include "ginput_lld_mouse_board.h"
+#elif defined(BOARD_FIREBULL_STM32_F103)
+ #include "ginput_lld_mouse_board_firebull_stm32f103.h"
+#else
+ #include "ginput_lld_mouse_board_example.h"
+#endif
+
+static uint16_t sampleBuf[7];
+static coord_t lastx, lasty;
+
+/**
+ * @brief 7-point median filtering code for touch samples
+ *
+ * @note This is an internally used routine only.
+ *
+ * @notapi
+ */
+static void filter(void) {
+ uint16_t temp;
+ int i,j;
+
+ for(i = 0; i < 4; i++) {
+ for(j = i; j < 7; j++) {
+ if(sampleBuf[i] > sampleBuf[j]) {
+ /* Swap the values */
+ temp = sampleBuf[i];
+ sampleBuf[i] = sampleBuf[j];
+ sampleBuf[j] = temp;
+ }
+ }
+ }
+}
+
+/**
+ * @brief Initialise the mouse/touch.
+ *
+ * @notapi
+ */
+void ginput_lld_mouse_init(void) {
+ init_board();
+}
+
+/**
+ * @brief Read the mouse/touch position.
+ *
+ * @param[in] pt A pointer to the structure to fill
+ *
+ * @note For drivers that don't support returning a position
+ * when the touch is up (most touch devices), it should
+ * return the previous position with the new Z value.
+ * The z value is the pressure for those touch devices
+ * that support it (-100 to 100 where > 0 is touched)
+ * or, 0 or 100 for those drivers that don't.
+ *
+ * @notapi
+ */
+void ginput_lld_mouse_get_reading(MouseReading *pt) {
+ uint16_t i;
+
+ // If touch-off return the previous results
+ if (!getpin_pressed()) {
+ pt->x = lastx;
+ pt->y = lasty;
+ pt->z = 0;
+ pt->buttons = 0;
+ return;
+ }
+
+ // Read the port to get the touch settings
+ aquire_bus();
+
+ /* Get the X value
+ * Discard the first conversion - very noisy and keep the ADC on hereafter
+ * till we are done with the sampling. Note that PENIRQ is disabled while reading.
+ * Finally switch on PENIRQ once again - perform a dummy read.
+ * Once we have the readings, find the medium using our filter function
+ */
+ read_value(0xD1);
+ for(i = 0; i < 7; i++)
+ sampleBuf[i] = read_value(0xD1);
+ read_value(0xD0);
+ filter();
+ lastx = (coord_t)sampleBuf[3];
+
+ /* Get the Y value using the same process as above */
+ read_value(0x91);
+ for(i = 0; i < 7; i++)
+ sampleBuf[i] = read_value(0x91);
+ read_value(0x90);
+ filter();
+ lasty = (coord_t)sampleBuf[3];
+
+ // Release the bus
+ release_bus();
+
+ // Return the results
+ pt->x = lastx;
+ pt->y = lasty;
+ pt->z = 100;
+ pt->buttons = GINPUT_TOUCH_PRESSED;
+}
+
+#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */
+/** @} */
diff --git a/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_example.h b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_example.h new file mode 100644 index 00000000..8c11c96e --- /dev/null +++ b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_example.h @@ -0,0 +1,87 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2012
+ 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 drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_example.h
+ * @brief GINPUT Touch low level driver source for the XPT2046 on the example board.
+ *
+ * @addtogroup GINPUT_MOUSE
+ * @{
+ */
+
+#ifndef _GINPUT_LLD_MOUSE_BOARD_H
+#define _GINPUT_LLD_MOUSE_BOARD_H
+
+/**
+ * @brief Initialise the board for the touch.
+ *
+ * @notapi
+ */
+static __inline void init_board(void) {
+ /* Code here */
+ #error "ginputXPT2046: You must supply a definition for init_board for your board"
+}
+
+/**
+ * @brief Check whether the surface is currently touched
+ * @return TRUE if the surface is currently touched
+ *
+ * @notapi
+ */
+static __inline bool_t getpin_pressed(void) {
+ /* Code here */
+ #error "ginputXPT2046: You must supply a definition for getpin_pressed for your board"
+}
+
+/**
+ * @brief Aquire the bus ready for readings
+ *
+ * @notapi
+ */
+static __inline void aquire_bus(void) {
+ /* Code here */
+ #error "ginputXPT2046: You must supply a definition for aquire_bus for your board"
+}
+
+/**
+ * @brief Release the bus after readings
+ *
+ * @notapi
+ */
+static __inline void release_bus(void) {
+ /* Code here */
+ #error "ginputXPT2046: You must supply a definition for release_bus for your board"
+}
+
+/**
+ * @brief Read a value from touch controller
+ * @return The value read from the controller
+ *
+ * params[in] port The controller port to read.
+ *
+ * @notapi
+ */
+static __inline uint16_t read_value(uint16_t port) {
+ /* Code here */
+ #error "ginputXPT2046: You must supply a definition for read_value for your board"
+}
+
+#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
+/** @} */
diff --git a/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_firebull_stm32f103.h b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_firebull_stm32f103.h new file mode 100644 index 00000000..893ec865 --- /dev/null +++ b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_firebull_stm32f103.h @@ -0,0 +1,102 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2012
+ 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 drivers/ginput/touch/XPT2046/ginput_lld_mouse_board_example.h
+ * @brief GINPUT Touch low level driver source for the XPT2046 on the example board.
+ *
+ * @addtogroup GINPUT_MOUSE
+ * @{
+ */
+
+#ifndef _GINPUT_LLD_MOUSE_BOARD_H
+#define _GINPUT_LLD_MOUSE_BOARD_H
+
+static const SPIConfig spicfg = {
+ NULL,
+ GPIOC,
+ 6,
+ /* SPI_CR1_BR_2 |*/ SPI_CR1_BR_1 | SPI_CR1_BR_0,
+};
+
+/**
+ * @brief Initialise the board for the touch.
+ *
+ * @notapi
+ */
+static __inline void init_board(void) {
+ spiStart(&SPID1, &spicfg);
+}
+
+/**
+ * @brief Check whether the surface is currently touched
+ * @return TRUE if the surface is currently touched
+ *
+ * @notapi
+ */
+static __inline bool_t getpin_pressed(void) {
+ return (!palReadPad(GPIOC, 4));
+}
+/**
+ * @brief Aquire the bus ready for readings
+ *
+ * @notapi
+ */
+static __inline void aquire_bus(void) {
+ spiAcquireBus(&SPID1);
+ //TOUCHSCREEN_SPI_PROLOGUE();
+ palClearPad(GPIOC, 6);
+}
+
+/**
+ * @brief Release the bus after readings
+ *
+ * @notapi
+ */
+static __inline void release_bus(void) {
+ palSetPad(GPIOC, 6);
+ spiReleaseBus(&SPID1);
+ //TOUCHSCREEN_SPI_EPILOGUE();
+}
+
+/**
+ * @brief Read a value from touch controller
+ * @return The value read from the controller
+ *
+ * params[in] port The controller port to read.
+ *
+ * @notapi
+ */
+static __inline uint16_t read_value(uint16_t port) {
+ static uint8_t txbuf[3] = {0};
+ static uint8_t rxbuf[3] = {0};
+ uint16_t ret;
+
+ txbuf[0] = port;
+
+ spiExchange(&SPID1, 3, txbuf, rxbuf);
+
+ ret = (rxbuf[1] << 5) | (rxbuf[2] >> 3);
+
+ return ret;
+}
+
+#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
+/** @} */
diff --git a/drivers/ginput/touch/XPT2046/ginput_lld_mouse_config.h b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_config.h new file mode 100644 index 00000000..880c6a60 --- /dev/null +++ b/drivers/ginput/touch/XPT2046/ginput_lld_mouse_config.h @@ -0,0 +1,41 @@ +/*
+ ChibiOS/GFX - Copyright (C) 2012
+ 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 drivers/ginput/touch/XPT2046/ginput_lld_mouse_config.h
+ * @brief GINPUT LLD header file for mouse/touch driver.
+ *
+ * @addtogroup GINPUT_LLD_MOUSE
+ * @{
+ */
+#ifndef _LLD_GINPUT_MOUSE_CONFIG_H
+#define _LLD_GINPUT_MOUSE_CONFIG_H
+
+#define GINPUT_MOUSE_EVENT_TYPE GEVENT_TOUCH
+#define GINPUT_MOUSE_NEED_CALIBRATION TRUE
+#define GINPUT_MOUSE_LLD_CALIBRATION_LOADSAVE FALSE
+#define GINPUT_MOUSE_MAX_CALIBRATION_ERROR 5
+#define GINPUT_MOUSE_READ_CYCLES 4
+#define GINPUT_MOUSE_POLL_PERIOD 25
+#define GINPUT_MOUSE_MAX_CLICK_JITTER 10
+#define GINPUT_MOUSE_MAX_MOVE_JITTER 2
+#define GINPUT_MOUSE_CLICK_TIME 500
+
+#endif /* _LLD_GINPUT_MOUSE_CONFIG_H */
+/** @} */
diff --git a/drivers/ginput/touch/XPT2046/readme.txt b/drivers/ginput/touch/XPT2046/readme.txt new file mode 100644 index 00000000..22921c1a --- /dev/null +++ b/drivers/ginput/touch/XPT2046/readme.txt @@ -0,0 +1,9 @@ +To use this driver:
+
+1. Add in your halconf.h:
+ a) #define GFX_USE_GINPUT TRUE
+ b) #define GINPUT_NEED_MOUSE TRUE
+
+2. To your makefile add the following lines:
+ include $(GFXLIB)/drivers/ginput/touch/XPT2046/ginput_lld.mk
+
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