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/*
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/gdisp/SSD2119/gdisp_lld_board_embest_dmstf4bb.h
* @brief GDISP Graphic Driver subsystem board GPIO interface for the SSD2119 display.
*
* @addtogroup GDISP
* @{
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
#define SET_CS palSetPad(GPIOD, 7);
#define CLR_CS palClearPad(GPIOD, 7);
#define SET_DC palSetPad(GPIOE, 3);
#define CLR_DC palClearPad(GPIOE, 3);
#define SET_WR palSetPad(GPIOD, 5);
#define CLR_WR palClearPad(GPIOD, 5);
#define SET_RD palSetPad(GPIOD, 4);
#define CLR_RD palClearPad(GPIOD, 4);
#define SET_RST palSetPad(GPIOD, 3);
#define CLR_RST palClearPad(GPIOD, 3);
/* 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
};
/**
* @brief Initialise the board for the display.
* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
*
* @notapi
*/
static __inline void init_board(void) {
// D0 - D15
palSetPadMode(GPIOD, 14, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 15, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 0, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 1, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 7, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 8, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 9, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 10, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 11, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 12, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 13, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 14, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOE, 15, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 8, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 9, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOD, 10, PAL_MODE_OUTPUT_PUSHPULL);
// RST
palSetPadMode(GPIOD, 3, PAL_MODE_OUTPUT_PUSHPULL);
// CS
palSetPadMode(GPIOD, 7, PAL_MODE_OUTPUT_PUSHPULL);
// DC
palSetPadMode(GPIOE, 3, PAL_MODE_OUTPUT_PUSHPULL);
// RD
palSetPadMode(GPIOD, 4, PAL_MODE_OUTPUT_PUSHPULL);
// WR
palSetPadMode(GPIOD, 5, PAL_MODE_OUTPUT_PUSHPULL);
/* Configure the pins to a well know state */
SET_DC;
SET_RD;
SET_WR;
CLR_CS;
//SET_RST;
/* Display backlight control */
/* TIM4 is an alternate function 2 (AF2) */
pwmStart(&PWMD4, &pwmcfg);
palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
pwmEnableChannel(&PWMD4, 1, 100);
}
/**
* @brief Set or clear the lcd reset pin.
*
* @param[in] state TRUE = lcd in reset, FALSE = normal operation
*
* @notapi
*/
static __inline void setpin_reset(bool_t state) {
if (state) {
CLR_RST;
} else {
SET_RST;
}
}
/**
* @brief Set the lcd back-light level.
*
* @param[in] percent 0 to 100%
*
* @notapi
*/
static __inline void set_backlight(uint8_t percent) {
pwmEnableChannel(&PWMD4, 1, percent);
}
/**
* @brief Take exclusive control of the bus
*
* @notapi
*/
static __inline void acquire_bus(void) {
/* Nothing to do here since LCD is the only device on that bus */
}
/**
* @brief Release exclusive control of the bus
*
* @notapi
*/
static __inline void release_bus(void) {
/* Nothing to do here since LCD is the only device on that bus */
}
/**
* @brief Send data to the index register.
*
* @param[in] index The index register to set
*
* @notapi
*/
static __inline void write_index(uint16_t index) {
// D0 - D15
palWritePad(GPIOD, 14, index & 1);
palWritePad(GPIOD, 15, (index >> 1) & 1);
palWritePad(GPIOD, 0, (index >> 2) & 1);
palWritePad(GPIOD, 1, (index >> 3) & 1);
palWritePad(GPIOE, 7, (index >> 4) & 1);
palWritePad(GPIOE, 8, (index >> 5) & 1);
palWritePad(GPIOE, 9, (index >> 6) & 1);
palWritePad(GPIOE, 10, (index >> 7) & 1);
palWritePad(GPIOE, 11, (index >> 8) & 1);
palWritePad(GPIOE, 12, (index >> 9) & 1);
palWritePad(GPIOE, 13, (index >> 10) & 1);
palWritePad(GPIOE, 14, (index >> 11) & 1);
palWritePad(GPIOE, 15, (index >> 12) & 1);
palWritePad(GPIOD, 8, (index >> 13) & 1);
palWritePad(GPIOD, 9, (index >> 14) & 1);
palWritePad(GPIOD, 10, (index >> 15) & 1);
/* Control lines */
CLR_DC; CLR_WR; SET_WR; SET_DC;
}
/**
* @brief Send data to the lcd.
*
* @param[in] data The data to send
*
* @notapi
*/
static __inline void write_data(uint16_t data) {
// D0 - D15
palWritePad(GPIOD, 14, data & 1);
palWritePad(GPIOD, 15, (data >> 1) & 1);
palWritePad(GPIOD, 0, (data >> 2) & 1);
palWritePad(GPIOD, 1, (data >> 3) & 1);
palWritePad(GPIOE, 7, (data >> 4) & 1);
palWritePad(GPIOE, 8, (data >> 5) & 1);
palWritePad(GPIOE, 9, (data >> 6) & 1);
palWritePad(GPIOE, 10, (data >> 7) & 1);
palWritePad(GPIOE, 11, (data >> 8) & 1);
palWritePad(GPIOE, 12, (data >> 9) & 1);
palWritePad(GPIOE, 13, (data >> 10) & 1);
palWritePad(GPIOE, 14, (data >> 11) & 1);
palWritePad(GPIOE, 15, (data >> 12) & 1);
palWritePad(GPIOD, 8, (data >> 13) & 1);
palWritePad(GPIOD, 9, (data >> 14) & 1);
palWritePad(GPIOD, 10, (data >> 15) & 1);
/* Control lines */
CLR_WR; SET_WR;
}
#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
/**
* @brief Read data from the lcd.
*
* @return The data from the lcd
* @note The chip select may need to be asserted/de-asserted
* around the actual spi read
*
* @notapi
*/
static __inline uint16_t read_data(void) {
uint16_t value;
/*
// change pin mode to digital input
palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_INPUT);
CLR_RD;
value = palReadPort(GPIOE);
value = palReadPort(GPIOE);
SET_RD;
// change pin mode back to digital output
palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
*/
return value;
}
#endif
#endif /* _GDISP_LLD_BOARD_H */
/** @} */
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