73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/*
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ChibiOS/GFX - Copyright (C) 2012
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file drivers/tdisp/HD44780/tdisp_lld_board_unknown.h
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* @brief TDISP driver subsystem board interface for the HD44780 display
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*
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* @addtogroup TDISP
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* @{
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*/
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#ifndef _TDISP_LLD_BOARD_H
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#define _TDISP_LLD_BOARD_H
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/* Configure these to match the hardware connections on your board */
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#define BUS_4BITS FALSE
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#define PORT_DATA GPIOG
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#define PORT_CTRL GPIOE
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#define PIN_RS 0
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#define PIN_RW 1
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#define PIN_EN 2
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static void init_board(void) {
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palSetGroupMode(PORT_CTRL, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
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palSetGroupMode(PORT_DATA, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
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palClearPad(PORT_CTRL, PIN_RW);
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}
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static void writeToLCD(uint8_t data) {
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palWritePort(PORT_DATA, data);
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palSetPad(PORT_CTRL, PIN_EN);
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chThdSleepMicroseconds(1);
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palClearPad(PORT_CTRL, PIN_EN);
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chThdSleepMicroseconds(5);
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}
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static void write_cmd(uint8_t data) {
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palClearPad(PORT_CTRL, PIN_RS);
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#if BUS_4BITS
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writeToLCD(data>>4);
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#endif
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writeToLCD(data);
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}
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static void write_data(uint8_t data) {
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palSetPad(PORT_CTRL, PIN_RS);
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#if BUS_4BITS
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writeToLCD(data>>4);
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#endif
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writeToLCD(data);
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}
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#endif /* _TDISP_LLD_BOARD_H */
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/** @} */
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