diff options
Diffstat (limited to 'demos/3rdparty/tdisp_f4_discovery/tdisp_lld_board.h')
| -rw-r--r-- | demos/3rdparty/tdisp_f4_discovery/tdisp_lld_board.h | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/demos/3rdparty/tdisp_f4_discovery/tdisp_lld_board.h b/demos/3rdparty/tdisp_f4_discovery/tdisp_lld_board.h deleted file mode 100644 index d839d302..00000000 --- a/demos/3rdparty/tdisp_f4_discovery/tdisp_lld_board.h +++ /dev/null @@ -1,169 +0,0 @@ -/*
- ChibiOS/GFX - Copyright (C) 2012, 2013
- 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/tdisp/HD44780/tdisp_lld_board_st_stm32f4_discovery.h
- * @brief TDISP driver subsystem board interface for the HD44780 display
- *
- * @addtogroup TDISP
- * @{
- */
-
-#ifndef _TDISP_LLD_BOARD_H
-#define _TDISP_LLD_BOARD_H
-
-/* Configure these to match the hardware connections on your board */
-#define BUS_4BITS TRUE
-
-/* Configure the bitoffset in the dataport so they match with the
- * hardware pins. An offset of 0 means bit0 stays at bit0 of the dataport.
- * If the offset is set to 3, bit0 of the nibble will be positioned at
- * bit3 of the hardware-port.
- */
-#define hardware_offset 0
-
-/* The port where the data is sent to. In the
- * low-leveldriver het hardware_offset is taken
- * into account. If for example the hardware_offset
- * is set to 3, then de data will be sent to
- * PE3, PE4, PE5 en PE6, if the dataport where GPIOE.
- */
-#define PORT_DATA GPIOE
-
-/* The port used to controle the controle lines of
- * the display.
- */
-#define PORT_CTRL GPIOD
-/* Pin to controle the R/S-line of the display */
-#define PIN_RS 0
-/* Pin to controle the EN-line of the display */
-#define PIN_EN 1
-/* Pin to controle the R/W-pin of the display.
- * If reading of the display is not used disable
- * reading in the gfxconf.h and put a dummy value here
- * as it will not be used.
- */
-#define PIN_RW 7
-
-#if TDISP_USE_BACKLIGHT
-/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
-static const PWMConfig pwmcfg = {
- 1000000, /* 1 MHz PWM clock frequency. */
- 100, /* PWM period is 100 cycles. */
- NULL,
- {
- {PWM_OUTPUT_ACTIVE_HIGH, NULL},
- {PWM_OUTPUT_ACTIVE_HIGH, NULL},
- {PWM_OUTPUT_ACTIVE_HIGH, NULL},
- {PWM_OUTPUT_ACTIVE_HIGH, NULL}
- },
- 0
-};
-#endif
-
-/* Initializes the board.
- * If you are using a specific setup, than copy the boardfile to your
- * project directory and set in gfxconf.h that you are using a custom board file
- * The next thing you have to do is to initialize the hardware port(s) you
- * are using to communicate with the board.
- */
-static void init_board(void) {
- /* Initialize the ports for data and controle-lines */
- palSetGroupMode(PORT_CTRL, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
- palSetGroupMode(PORT_DATA, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
- /* Set alle controle pins to low */
- palClearPad(PORT_CTRL, PIN_RS);
- palClearPad(PORT_CTRL, PIN_EN);
- #if TDISP_NEED_READ
- palClearPad(PORT_CTRL, PIN_RW);
- #endif
-
- #if TDISP_USE_BACKLIGHT
- /* Display backlight control */
- /* TIM4 is an alternate function 2 (AF2) */
- pwmStart(&PWMD4, &pwmcfg);
- palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
- pwmEnableChannel(&PWMD4, 1, 100);
- #endif
-}
-
-/* This is the low-level routine for sending the bits
- * to the LCD-display. This routine shifts
- * the bits so they match the hardware port.
- */
-static void writeToLCD(uint8_t data) {
- palWritePort(PORT_DATA, data);
- palSetPad(PORT_CTRL, PIN_EN);
- chThdSleepMicroseconds(5);
-// chThdSleepMilliseconds(10);
- palClearPad(PORT_CTRL, PIN_EN);
- chThdSleepMicroseconds(5);
-// chThdSleepMilliseconds(10);
- /* wait a little while so that de display can process the data */
-}
-
-/* Writes a command to the display. The
- * RS-line is pulled low and than the
- * data is send.
- */
-static void write_cmd(uint8_t data) {
- palClearPad(PORT_CTRL, PIN_RS);
- #if BUS_4BITS
- /* first send the high-nibble */
- writeToLCD((data & 0xF0)>>4);
- /* in 4-bit mode the high-nibble is zeroed out */
- writeToLCD((data & 0x0F));
- #else
- writeToLCD(data);
- #endif
-}
-
-// static void write_initcmd(uint8_t data) {
-// write_cmd(data);
-// }
-
-/* Write data to the display. The
- * RS-line is pulled high and than the
- * data is send.
- */
-static void write_data(uint8_t data) {
- palSetPad(PORT_CTRL, PIN_RS);
- #if BUS_4BITS
- /* first send the high-nibble */
- writeToLCD((data & 0xF0)>>4);
- /* in 4-bit mode the high-nibble is zeroed out */
- writeToLCD((data & 0x0F));
- #else
- writeToLCD(data);
- #endif
-}
-
-#if TDISP_USE_BACKLIGHT
-
-/* Sets the brightness of the backlight of the display, using
- * the PWM channel */
-static void set_backlight(uint16_t percentage) {
- pwmEnableChannel(&PWMD4, 1, percentage);
-}
-#endif
-
-#endif /* _TDISP_LLD_BOARD_H */
-/** @} */
-
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