From a2a87ddd458ef0811dfb71510d7027d23038005b Mon Sep 17 00:00:00 2001 From: Joel Bodenmann Date: Wed, 9 Jan 2013 14:29:32 +0100 Subject: added TDISP - experimental --- drivers/tdisp/HD44780/tdisp_lld.c | 87 +++++++++++++++++++++++++ drivers/tdisp/HD44780/tdisp_lld.mk | 6 ++ drivers/tdisp/HD44780/tdisp_lld_board_example.h | 63 ++++++++++++++++++ drivers/tdisp/HD44780/tdisp_lld_config.h | 44 +++++++++++++ 4 files changed, 200 insertions(+) create mode 100644 drivers/tdisp/HD44780/tdisp_lld.c create mode 100644 drivers/tdisp/HD44780/tdisp_lld.mk create mode 100644 drivers/tdisp/HD44780/tdisp_lld_board_example.h create mode 100644 drivers/tdisp/HD44780/tdisp_lld_config.h (limited to 'drivers/tdisp') diff --git a/drivers/tdisp/HD44780/tdisp_lld.c b/drivers/tdisp/HD44780/tdisp_lld.c new file mode 100644 index 00000000..b830a7ca --- /dev/null +++ b/drivers/tdisp/HD44780/tdisp_lld.c @@ -0,0 +1,87 @@ +/* + ChibiOS/GFX - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + 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 . +*/ + +/** + * @file drivers/tdisp/HD44780/tdisp_lld.c + * @brief TDISP driver subsystem low level driver source for the HD44780 display + * + * @addtogroup TDISP + * @{ + */ + +#include "ch.h" +#include "hal.h" +#include "gfx.h" + +#if GFX_USE_TDISP /*|| defined(__DOXYGEN__)*/ + +#ifndef TDISP_ROWS + #define TDISP_ROWS 16 +#endif +#ifndef TDISP_COLUMNS + #define TDISP_COLUMNS 2 +#endif + +#include "tdisp_lld_board_example.h" + +void TDISP_LLD(write_cmd)(uint8_t data) { + setpin_rs(FALSE); + setpin_rw(FALSE); + + write_bus(data); + + setpin_e(TRUE); + chThdSleepMicroseconds(1); + setpin_e(FALSE); + chThdSleepMicroseconds(5); +} + +void TDISP_LLD(write_data)(uint8_t data) { + setpin_rs(TRUE); + setpin_rw(FALSE); + + write_bus(data); + + setpin_e(TRUE); + chThdSleepMicroseconds(1); + setpin_e(FALSE); + chThdSleepMicroseconds(5); +} + +bool_t TDISP_LLD(init)(void) { + /* initialise hardware */ + init_board(); + + /* initialise controller */ + chThdSleepMilliseconds(50); + TDISP_LLD(write_cmd)(0x38); + chThdSleepMilliseconds(64); + TDISP_LLD(write_cmd)(0x0f); + chThdSleepMicroseconds(50); + TDISP_LLD(write_cmd)(0x01); + chThdSleepMilliseconds(5); + TDISP_LLD(write_cmd)(0x06); + chThdSleepMicroseconds(50); + + return TRUE; +} + +#endif /* GFX_USE_TDISP */ + diff --git a/drivers/tdisp/HD44780/tdisp_lld.mk b/drivers/tdisp/HD44780/tdisp_lld.mk new file mode 100644 index 00000000..88780bea --- /dev/null +++ b/drivers/tdisp/HD44780/tdisp_lld.mk @@ -0,0 +1,6 @@ +# List the required driver. +GFXSRC += $(GFXLIB)/drivers/tdisp/HD44780/tdisp_lld.c + +# Required include directories +GFXINC += $(GFXLIB)/drivers/tdisp/HD44780 + diff --git a/drivers/tdisp/HD44780/tdisp_lld_board_example.h b/drivers/tdisp/HD44780/tdisp_lld_board_example.h new file mode 100644 index 00000000..e07116d8 --- /dev/null +++ b/drivers/tdisp/HD44780/tdisp_lld_board_example.h @@ -0,0 +1,63 @@ +/* + ChibiOS/GFX - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + 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 . +*/ + +/** + * @file drivers/tdisp/HD44780/tdisp_lld_board_example.h + * @brief TDISP driver subsystem board interface for the HD44780 display + * + * @addtogroup TDISP + * @{ + */ + +#ifndef _TDISP_LLD_BOARD_H +#define _TDISP_LLD_BOARD_H + +void init_board(void) { + palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL); + palSetGroupMode(GPIOD, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL); +} + +void setpin_e(bool_t state) { + if(state) + palSetPad(GPIOE, 2); + else + palClearPad(GPIOE, 2); +} + +void setpin_rs(bool_t state) { + if(state) + palSetPad(GPIOE, 0); + else + palClearPad(GPIOE, 0); +} + +void setpin_rw(bool_t state) { + if(state) + palSetPad(GPIOE, 1); + else + palClearPad(GPIOE, 1); +} + +void write_bus(uint8_t data) { + palWritePort(GPIOD, data); +} + +#endif /* _TDISP_LLD_BOARD_H */ + diff --git a/drivers/tdisp/HD44780/tdisp_lld_config.h b/drivers/tdisp/HD44780/tdisp_lld_config.h new file mode 100644 index 00000000..7ea80ea2 --- /dev/null +++ b/drivers/tdisp/HD44780/tdisp_lld_config.h @@ -0,0 +1,44 @@ +/* + ChibiOS/GFX - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + 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 . +*/ + +/** + * @file drivers/tdisp/HD44780/tdisp_lld_config.h + * @brief TDISP Driver subsystem low level driver header for the HD44780 display. + * + * @addtogroup TDISP + * @{ + */ + +#ifndef _TDISP_LLD_CONFIG_H +#define _TDISP_LLD_CONFIG_H + +#if GFX_USE_TDISP + +/*===========================================================================*/ +/* Driver hardware support. */ +/*===========================================================================*/ + +#define TDISP_DRIVER_NAME "HD44780" +#define TDISP_LLD(x) tdisp_lld_##x##_HD44780 + +#endif /* GFX_USE_TDISP */ + +#endif /* _TDISP_LLD_CONFIG_H */ +/** @} */ -- cgit v1.2.3