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/*
* 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
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
#include "stm32f4xx_fmc.h"
#include "stm32f429i_discovery_sdram.h"
#include <string.h>
#define SPI_PORT &SPID5
#define DC_PORT GPIOD
#define DC_PIN GPIOD_LCD_WRX
static const SPIConfig spi_cfg = {
NULL,
GPIOC,
GPIOC_SPI5_LCD_CS,
((1 << 3) & SPI_CR1_BR) | SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_MSTR
};
#define ALLOW_2ND_LAYER GFXON
static const ltdcConfig driverCfg = {
240, 320,
10, 2,
20, 2,
10, 4,
0,
0x000000,
{
(LLDCOLOR_TYPE *)SDRAM_BANK_ADDR, // frame
240, 320, // width, height
240 * LTDC_PIXELBYTES, // pitch
LTDC_PIXELFORMAT, // fmt
0, 0, // x, y
240, 320, // cx, cy
0x00000000, // defcolor
0x000000, // keycolor
LTDC_BLEND_FIX1_FIX2, // blending
0, // palette
0, // palettelen
0xFF, // alpha
LTDC_LEF_ENABLE // flags
},
#if ALLOW_2ND_LAYER
{ // Foreground layer config (if turned on)
(LLDCOLOR_TYPE *)(SDRAM_BANK_ADDR+(240 * 320 * LTDC_PIXELBYTES)), // Frame buffer address
240, 320, // width, height
240 * LTDC_PIXELBYTES, // pitch
LTDC_PIXELFORMAT, // fmt
0, 0, // x, y
240, 320, // cx, cy
0x00000000, // Default color (ARGB8888)
0x000000, // Color key (RGB888)
LTDC_BLEND_MOD1_MOD2, // Blending factors
0, // Palette (RGB888, can be NULL)
0, // Palette length
0xFF, // Constant alpha factor
LTDC_LEF_ENABLE // Layer configuration flags
}
#else
LTDC_UNUSED_LAYER_CONFIG
#endif
};
#include "ili9341.h"
static void acquire_bus(GDisplay *g) {
(void) g;
spiSelect(SPI_PORT);
}
static void release_bus(GDisplay *g) {
(void) g;
spiUnselect(SPI_PORT);
}
static void write_index(GDisplay *g, uint8_t index) {
static uint8_t sindex;
(void) g;
palClearPad(DC_PORT, DC_PIN);
sindex = index;
spiSend(SPI_PORT, 1, &sindex);
}
static void write_data(GDisplay *g, uint8_t data) {
static uint8_t sdata;
(void) g;
palSetPad(DC_PORT, DC_PIN);
sdata = data;
spiSend(SPI_PORT, 1, &sdata);
}
static void Init9341(GDisplay *g) {
#define REG_TYPEMASK 0xFF00
#define REG_DATAMASK 0x00FF
#define REG_DATA 0x0000
#define REG_COMMAND 0x0100
#define REG_DELAY 0x0200
static const uint16_t initdata[] = {
REG_COMMAND | ILI9341_CMD_RESET,
REG_DELAY | 5,
REG_COMMAND | ILI9341_CMD_DISPLAY_OFF,
REG_COMMAND | ILI9341_SET_FRAME_CTL_NORMAL, 0x00, 0x1B,
REG_COMMAND | ILI9341_SET_FUNCTION_CTL, 0x0A, 0xA2,
REG_COMMAND | ILI9341_SET_POWER_CTL_1, 0x10,
REG_COMMAND | ILI9341_SET_POWER_CTL_2, 0x10,
#if 1
REG_COMMAND | ILI9341_SET_VCOM_CTL_1, 0x45, 0x15,
REG_COMMAND | ILI9341_SET_VCOM_CTL_2, 0x90,
#else
REG_COMMAND | ILI9341_SET_VCOM_CTL_1, 0x35, 0x3E,
REG_COMMAND | ILI9341_SET_VCOM_CTL_2, 0xBE,
#endif
REG_COMMAND | ILI9341_SET_MEM_ACS_CTL, 0xC8,
REG_COMMAND | ILI9341_SET_RGB_IF_SIG_CTL, 0xC2,
REG_COMMAND | ILI9341_SET_FUNCTION_CTL, 0x0A, 0xA7, 0x27, 0x04,
REG_COMMAND | ILI9341_SET_COL_ADDR, 0x00, 0x00, 0x00, 0xEF,
REG_COMMAND | ILI9341_SET_PAGE_ADDR, 0x00, 0x00, 0x01, 0x3F,
REG_COMMAND | ILI9341_SET_IF_CTL, 0x01, 0x00, 0x06,
REG_COMMAND | ILI9341_SET_GAMMA, 0x01,
REG_COMMAND | ILI9341_SET_PGAMMA,
#if 1
0x0F, 0x29, 0x24, 0x0C, 0x0E, 0x09, 0x4E, 0x78,
0x3C, 0x09, 0x13, 0x05, 0x17, 0x11, 0x00,
#else
0x1F, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00,
#endif
REG_COMMAND | ILI9341_SET_NGAMMA,
#if 1
0x00, 0x16, 0x1B, 0x04, 0x11, 0x07, 0x31, 0x33,
0x42, 0x05, 0x0C, 0x0A, 0x28, 0x2F, 0x0F,
#else
0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f,
#endif
REG_COMMAND | ILI9341_CMD_SLEEP_OFF,
REG_DELAY | 10,
REG_COMMAND | ILI9341_CMD_DISPLAY_ON,
REG_COMMAND | ILI9341_SET_MEM
};
const uint16_t *p;
acquire_bus(g);
for(p = initdata; p < &initdata[sizeof(initdata)/sizeof(initdata[0])]; p++) {
switch(*p & REG_TYPEMASK) {
case REG_DATA: write_data(g, *p); break;
case REG_COMMAND: write_index(g, *p); break;
case REG_DELAY: gfxSleepMilliseconds(*p & 0xFF); break;
}
}
release_bus(g);
}
static void init_board(GDisplay *g) {
(void) g;
palSetPadMode(GPIOA, 9, PAL_MODE_ALTERNATE(7)); // UART_TX
palSetPadMode(GPIOA, 10, PAL_MODE_ALTERNATE(7)); // UART_RX
palSetPadMode(GPIOF, GPIOF_LCD_DCX, PAL_MODE_ALTERNATE(5));
palSetPadMode(GPIOF, GPIOF_LCD_DE, PAL_MODE_ALTERNATE(14));
#define STM32_SAISRC_NOCLOCK (0 << 23) /**< No clock. */
#define STM32_SAISRC_PLL (1 << 23) /**< SAI_CKIN is PLL. */
#define STM32_SAIR_DIV2 (0 << 16) /**< R divided by 2. */
#define STM32_SAIR_DIV4 (1 << 16) /**< R divided by 4. */
#define STM32_SAIR_DIV8 (2 << 16) /**< R divided by 8. */
#define STM32_SAIR_DIV16 (3 << 16) /**< R divided by 16. */
#define STM32_PLLSAIN_VALUE 192
#define STM32_PLLSAIQ_VALUE 7
#define STM32_PLLSAIR_VALUE 4
#define STM32_PLLSAIR_POST STM32_SAIR_DIV4
/* PLLSAI activation.*/
RCC->PLLSAICFGR = (STM32_PLLSAIN_VALUE << 6) | (STM32_PLLSAIR_VALUE << 28) | (STM32_PLLSAIQ_VALUE << 24);
RCC->DCKCFGR = (RCC->DCKCFGR & ~RCC_DCKCFGR_PLLSAIDIVR) | STM32_PLLSAIR_POST;
RCC->CR |= RCC_CR_PLLSAION;
while(!(RCC->CR & RCC_CR_PLLSAIRDY)); // wait for PLLSAI to lock
// Initialise the SDRAM
SDRAM_Init();
// Clear the SDRAM
memset((void *)SDRAM_BANK_ADDR, 0, 0x400000);
spiStart(SPI_PORT, &spi_cfg);
Init9341(g);
}
static GFXINLINE void post_init_board(GDisplay *g) {
(void) g;
}
static GFXINLINE void set_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
#endif /* _GDISP_LLD_BOARD_H */
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