146 lines
3.2 KiB
C
146 lines
3.2 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/ILI9481/gdisp_lld_board_firebullstm32f103.h
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* @brief GDISP Graphics Driver subsystem low level driver source for
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* the ILI9481 and compatible HVGA 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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#define SET_CS palSetPad(GPIOD, 12);
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#define CLR_CS palClearPad(GPIOD, 12);
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#define SET_RS palSetPad(GPIOD, 13);
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#define CLR_RS palClearPad(GPIOD, 13);
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#define SET_WR palSetPad(GPIOD, 14);
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#define CLR_WR palClearPad(GPIOD, 14);
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#define SET_RD palSetPad(GPIOD, 15);
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#define CLR_RD palClearPad(GPIOD, 15);
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/**
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* @brief Initialise the board for the display.
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* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
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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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palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOD, 12, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOD, 13, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOD, 14, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOD, 15, PAL_MODE_OUTPUT_PUSHPULL);
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// Configure the pins to a well know state
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SET_RS;
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SET_RD;
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SET_WR;
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CLR_CS;
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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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(void) state;
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/* Nothing to do here - reset pin tied to Vcc */
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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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(void) percent;
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/* Nothing to do here - Backlight always on */
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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 since LCD is the only device on that bus */
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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 since LCD is the only device on that bus */
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}
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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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palWritePort(GPIOE, index);
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CLR_RS; CLR_WR; SET_WR; SET_RS;
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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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palWritePort(GPIOE, data);
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CLR_WR; SET_WR;
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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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uint16_t value;
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// change pin mode to digital input
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palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_INPUT);
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CLR_RD;
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value = palReadPort(GPIOE);
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value = palReadPort(GPIOE);
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SET_RD;
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// change pin mode back to digital output
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palSetGroupMode(GPIOE, PAL_WHOLE_PORT, 0, PAL_MODE_OUTPUT_PUSHPULL);
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return value;
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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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