171 lines
4.2 KiB
C
171 lines
4.2 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://chibios-gfx.com/license.html
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*/
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/**
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* @file drivers/gdisp/SSD1963/gdisp_lld_board_example_gpio.h
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* @brief GDISP Graphic Driver subsystem board interface for the SSD1963 display.
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*
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* @addtogroup GDISP
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* @{
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*/
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#ifndef _GDISP_LLD_BOARD_H
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#define _GDISP_LLD_BOARD_H
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#if defined(GDISP_USE_GPIO)
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#define Set_CS palSetPad(GDISP_CMD_PORT, GDISP_CS);
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#define Clr_CS palClearPad(GDISP_CMD_PORT, GDISP_CS);
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#define Set_RS palSetPad(GDISP_CMD_PORT, GDISP_RS);
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#define Clr_RS palClearPad(GDISP_CMD_PORT, GDISP_RS);
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#define Set_WR palSetPad(GDISP_CMD_PORT, GDISP_WR);
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#define Clr_WR palClearPad(GDISP_CMD_PORT, GDISP_WR);
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#define Set_RD palSetPad(GDISP_CMD_PORT, GDISP_RD);
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#define Clr_RD palClearPad(GDISP_CMD_PORT, GDISP_RD);
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#endif
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#if defined(GDISP_USE_FSMC)
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/* Using FSMC A16 as RS */
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#define GDISP_REG (*((volatile uint16_t *) 0x60000000)) /* RS = 0 */
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#define GDISP_RAM (*((volatile uint16_t *) 0x60020000)) /* RS = 1 */
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#endif
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/**
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* @brief Send data to the index register.
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*
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* @param[in] index The index register to set
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*
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* @notapi
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*/
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static inline void write_index(uint16_t index) {
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Set_CS; Set_RS; Set_WR; Clr_RD;
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palWritePort(GDISP_DATA_PORT, index);
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Clr_CS;
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}
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/**
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* @brief Send data to the lcd.
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*
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* @param[in] data The data to send
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*
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* @notapi
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*/
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static inline void write_data(uint16_t data) {
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Set_CS; Clr_RS; Set_WR; Clr_RD;
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palWritePort(GDISP_DATA_PORT, data);
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Clr_CS;
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}
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/**
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* @brief Initialise the board for the display.
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*
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* @notapi
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*/
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static inline void init_board(void) {
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IOBus busCMD = {GDISP_CMD_PORT, (1 << GDISP_CS) | (1 << GDISP_RS) | (1 << GDISP_WR) | (1 << GDISP_RD), 0};
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IOBus busDATA = {GDISP_CMD_PORT, 0xFFFFF, 0};
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palSetBusMode(&busCMD, PAL_MODE_OUTPUT_PUSHPULL);
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palSetBusMode(&busDATA, PAL_MODE_OUTPUT_PUSHPULL);
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}
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static inline void post_init_board(void) {
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/* Nothing to do here */
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}
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/**
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* @brief Set or clear the lcd reset pin.
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*
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* @param[in] state TRUE = lcd in reset, FALSE = normal operation
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*
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* @notapi
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*/
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static inline void setpin_reset(bool_t state) {
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}
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/**
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* @brief Set the lcd back-light level.
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*
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* @param[in] percent 0 to 100%
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*
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* @notapi
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*/
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static inline void set_backlight(uint8_t percent) {
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//duty_cycle is 00..FF
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//Work in progress: the SSD1963 has a built-in PWM, its output can
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//be used by a Dynamic Background Control or by a host (user)
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//Check your LCD's hardware, the PWM connection is default left open and instead
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//connected to a LED connection on the breakout board
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write_index(SSD1963_SET_PWM_CONF);//set PWM for BackLight
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write_data(0x0001);
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write_data(percent & 0x00FF);
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write_data(0x0001);//controlled by host (not DBC), enabled
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write_data(0x00FF);
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write_data(0x0060);//don't let it go too dark, avoid a useless LCD
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write_data(0x000F);//prescaler ???
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}
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/**
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* @brief Take exclusive control of the bus
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*
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* @notapi
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*/
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static inline void acquire_bus(void) {
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/* Nothing to do here */
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}
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/**
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* @brief Release exclusive control of the bus
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*
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* @notapi
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*/
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static inline void release_bus(void) {
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/* Nothing to do here */
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}
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__inline void write_stream(uint16_t *buffer, uint16_t size) {
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uint16_t i;
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Set_CS; Clr_RS; Set_WR; Clr_RD;
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for(i = 0; i < size; i++) {
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Set_WR;
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palWritePort(GDISP_DATA_PORT, buffer[i]);
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Clr_WR;
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}
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Clr_CS;
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}
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__inline void read_stream(uint16_t *buffer, size_t size) {
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uint16_t i;
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Set_CS; Clr_RS; Clr_WR; Set_RD;
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for(i = 0; i < size; i++) {
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Set_RD;
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buffer[i] = palReadPort(GDISP_DATA_PORT);
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Clr_RD;
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}
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}
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#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
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/**
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* @brief Read data from the lcd.
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*
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* @return The data from the lcd
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* @note The chip select may need to be asserted/de-asserted
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* around the actual spi read
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*
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* @notapi
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*/
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static inline uint16_t read_data(void) {
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Set_CS; Clr_RS; Clr_WR; Set_RD;
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uint16_t data = palReadPort(GDISP_DATA_PORT);
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Clr_CS;
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return data;
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}
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#endif
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#endif /* _GDISP_LLD_BOARD_H */
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/** @} */
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