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ugfx/boards/addons/gdisp/board_ILI9341_spi.h

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Example spi board config for ILI9341
2014-03-27 22:51:36 +00:00
/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file boards/addons/gdisp/board_ILI9341_spi.h
* @brief GDISP Graphic Driver subsystem board interface for the ILI9341 display.
*
* @note This file contains a mix of hardware specific and operating system specific
* code. You will need to change it for your CPU and/or operating system.
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
#define LCD_PORT GPIOB
#define LCD_MOSI 15
#define LCD_MISO 14
#define LCD_SCK 13
#define LCD_CS 12
#define LCD_DC 11
#define LCD_RES 10
#define LCD_DC_CMD palClearPad(LCD_PORT, LCD_DC)
#define LCD_DC_DATA palSetPad(LCD_PORT, LCD_DC)
#define LCD_SCK_SET palSetPad(LCD_PORT, LCD_SCK)
#define LCD_SCK_RES palClearPad(LCD_PORT, LCD_SCK)
#define LCD_CS_RES palSetPad(LCD_PORT, LCD_CS)
#define LCD_CS_SET palClearPad(LCD_PORT, LCD_CS)
/**
* SPI configuration structure.
* Speed 12 MHz, CPHA=0, CPOL=0, 8bits frames, MSb transmitted first.
* Soft slave select.
*/
static const SPIConfig spi2cfg = {
NULL,
LCD_PORT,
LCD_CS,
(SPI_CR1_MSTR | SPI_CR1_SPE | SPI_CR1_SSM | SPI_CR1_SSI)
};
static void send_data(uint16_t data);
/**
* @brief Initialise the board for the display.
*
* @param[in] g The GDisplay structure
*
* @note Set the g->board member to whatever is appropriate. For multiple
* displays this might be a pointer to the appropriate register set.
*
* @notapi
*/
static inline void init_board(GDisplay *g) {
// As we are not using multiple displays we set g->board to NULL as we don't use it.
g->board = 0;
palSetPadMode(LCD_PORT, LCD_CS, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(LCD_PORT, LCD_DC, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(LCD_PORT, LCD_RES, PAL_MODE_OUTPUT_PUSHPULL);
spiStart(&SPID2, &spi2cfg);
spiSelectI(&SPID2);
}
/**
* @brief After the initialisation.
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline void post_init_board(GDisplay *g) {
(void) g;
}
/**
* @brief Set or clear the lcd reset pin.
*
* @param[in] g The GDisplay structure
* @param[in] state TRUE = lcd in reset, FALSE = normal operation
*
* @notapi
*/
static inline void setpin_reset(GDisplay *g, bool_t state) {
(void) g;
if (state == TRUE) {
palClearPad(LCD_PORT, LCD_RES);
} else {
palSetPad(LCD_PORT, LCD_RES);
}
}
/**
* @brief Set the lcd back-light level.
*
* @param[in] g The GDisplay structure
* @param[in] percent 0 to 100%
*
* @notapi
*/
static inline void set_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
/**
* @brief Take exclusive control of the bus
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline void acquire_bus(GDisplay *g) {
(void) g;
}
/**
* @brief Release exclusive control of the bus
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline void release_bus(GDisplay *g) {
(void) g;
}
/**
* @brief Send data to the lcd.
*
* @param[in] data The data to send
*
* @notapi
*/
static inline void send_data(uint16_t data) {
// http://forum.easyelectronics.ru/viewtopic.php?p=262122#p262122
while (!(SPI2->SR & SPI_SR_TXE)); // <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> SPI_DR
SPI2->DR = data; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> SPI_DR <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/**
* @brief Send data to the index register.
*
* @param[in] g The GDisplay structure
* @param[in] index The index register to set
*
* @notapi
*/
static inline void write_index(GDisplay *g, uint16_t index) {
(void) g;
while (SPI2->SR & SPI_SR_BSY);
LCD_CS_RES;
LCD_DC_CMD; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
LCD_CS_SET;
send_data(index);
while (SPI2->SR & SPI_SR_BSY); // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (==1) -- <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SPI <20><><EFBFBD><EFBFBD><EFBFBD>
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
*/
LCD_DC_DATA; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/**
* @brief Send data to the lcd with DC control.
*
* @param[in] g The GDisplay structure
* @param[in] data The data to send
*
* @notapi
*/
static inline void write_data(GDisplay *g, uint16_t data) {
(void) g;
send_data(data);
}
/**
* @brief Set the bus in read mode
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline void setreadmode(GDisplay *g) {
(void) g;
}
/**
* @brief Set the bus back into write mode
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline void setwritemode(GDisplay *g) {
(void) g;
}
/**
* @brief Read data from the lcd.
* @return The data from the lcd
*
* @param[in] g The GDisplay structure
*
* @notapi
*/
static inline uint16_t read_data(GDisplay *g) {
(void) g;
return 0;
}
#endif /* _GDISP_LLD_BOARD_H */
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