diff --git a/halext/drivers/touchpad/touchpadADS7843/readme.txt b/halext/drivers/touchpad/touchpadADS7843/readme.txt new file mode 100644 index 00000000..34a57bc0 --- /dev/null +++ b/halext/drivers/touchpad/touchpadADS7843/readme.txt @@ -0,0 +1,9 @@ +To use this driver: + +1. Add in your halconf.h: + a) #define HAL_USE_TOUCHPAD TRUE + +2. To your makefile add the following lines: + include $(LCDLIB)/lcd.mk + include $(LCDLIB)/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.mk + diff --git a/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.c b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.c new file mode 100644 index 00000000..85db56e7 --- /dev/null +++ b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.c @@ -0,0 +1,152 @@ +/* + ChibiOS-LCD-Driver - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + 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 . +*/ + +/** + * @file touchpadADS7843/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. */ +/*===========================================================================*/ + +#define TP_CS_HIGH palSetPad(TP_CS_PORT, TP_CS) +#define TP_CS_LOW palClearPad(TP_CS_PORT, TP_CS) + +#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. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* 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) { + uint8_t txbuf[1]; + uint8_t rxbuf[2]; + uint16_t y; + + txbuf[0] = 0xd0; + TP_CS_LOW; + spiSend(&SPID1, 1, txbuf); + spiReceive(&SPID1, 2, rxbuf); + TP_CS_HIGH; + + y = rxbuf[0] << 4; + y |= rxbuf[1] >> 4; + + return y; +} + +/* + * @brief Reads out the X direction. + * + * @notapi + */ +uint16_t tp_lld_read_y(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; +} + +/* ---- Optional Routines ---- */ +#if TOUCHPAD_HAS_IRQ || defined(__DOXYGEN__) + /* + * @brief for checking if touchpad is pressed or not. + * + * @return 1 if pressed / 0 if not pressed + * + * @noapi + */ + uint8_t tp_lld_irq(void) { + return (!palReadPad(TP_IRQ_PORT, TP_IRQ)); + } +#endif + +#endif /* HAL_USE_TOUCHPAD */ +/** @} */ + diff --git a/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.mk b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.mk new file mode 100644 index 00000000..42f66b8c --- /dev/null +++ b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.mk @@ -0,0 +1,6 @@ +# List the required driver. +HALSRC += $(LCDLIB)/halext/drivers/touchpad/touchpadADS7843/touchpad_lld.c + +# Required include directories +HALINC += $(LCDLIB)/halext/drivers/touchpad/touchpadADS7843 + diff --git a/halext/drivers/touchpad/touchpadADS7843/touchpad_lld_config.h b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld_config.h new file mode 100644 index 00000000..1e878795 --- /dev/null +++ b/halext/drivers/touchpad/touchpadADS7843/touchpad_lld_config.h @@ -0,0 +1,44 @@ +/* + ChibiOS-LCD-Driver - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + 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 . +*/ + +/** + * @file touchpadADS7843/touchpad_lld_config.h + * @brief Touchpad 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_HAS_IRQ TRUE +#define TOUCHPAD_HAS_PRESSURE FALSE + +#endif /* HAL_USE_TOUCHPAD */ + +#endif /* _TOUCHPAD_LLD_CONFIG_H */ +/** @} */