The offical µGFX repository.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

310 lines
11 KiB

/*
* 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
/* Avoid naming collisions with CubeHAL. */
#undef Red
#undef Green
#undef Blue
/* HAL drivers needed for configuration. */
#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_rcc.h"
#include "stm32f4xx_hal_gpio.h"
#include "stm32f4xx_hal_dsi.h"
/* sdram driver provided by ST. */
#include "stm32f469i_discovery_sdram.h"
/* OTM8009A driver provided by ST. */
#include "otm8009a.h"
/** Manually set the LTDC timing. */
#ifndef GFX_LTDC_TIMING_SET
#define GFX_LTDC_TIMING_SET
#endif
/** Most boards will be revision A. */
#ifndef USE_STM32469I_DISCO_REVA
#define USE_STM32469I_DISCO_REVA
#endif
/** @brief Panel parameters
*
* This panel is a KoD KM-040TMP-02-0621 DSI LCD Display.
*/
static const ltdcConfig driverCfg = {
800, 480, // Width, Height (pixels)
1, 2, // Horizontal, Vertical sync (pixels)
15, 34, // Horizontal, Vertical back porch (pixels)
16, 34, // Horizontal, Vertical front porch (pixels)
0, // Sync flags
0x000000, // Clear color (RGB888)
{ // Background layer config
(LLDCOLOR_TYPE *)SDRAM_DEVICE_ADDR, // Frame buffer address
800, 480, // Width, Height (pixels)
800 * LTDC_PIXELBYTES, // Line pitch (bytes)
LTDC_PIXELFORMAT, // Pixel format
0, 0, // Start pixel position (x, y)
800, 480, // Size of virtual layer (cx, cy)
LTDC_COLOR_FUCHSIA, // Default color (ARGB8888)
0x980088, // Color key (RGB888)
LTDC_BLEND_FIX1_FIX2, // Blending factors
0, // Palette (RGB888, can be NULL)
0, // Palette length
0xFF, // Constant alpha factor
LTDC_LEF_ENABLE // Layer configuration flags
},
LTDC_UNUSED_LAYER_CONFIG // Foreground layer config
};
/** Display timing setting */
#define KoD_FREQUENCY_DIVIDER 7
/** Global DSI handle to hold DSI parameters. */
DSI_HandleTypeDef dsiHandle;
static GFXINLINE void reset_lcd(GDisplay* g);
/**
* @brief Function to intialize the STM32F46i-DISCO board.
*
* @param g: Structure holding display parameters.
*/
static GFXINLINE 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;
#ifdef GFX_LTDC_TIMING_SET
// KoD LCD clock configuration
// PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz
// PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 384 Mhz
// PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 384/7 = 54.857 Mhz
// LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_2 = 54.857/2 = 27.429Mhz
#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 384
#define STM32_PLLSAIQ_VALUE 4
#define STM32_PLLSAIR_VALUE KoD_FREQUENCY_DIVIDER
#define STM32_PLLSAIR_POST STM32_SAIR_DIV2
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
#endif
__HAL_RCC_DSI_CLK_ENABLE();
DSI_PLLInitTypeDef dsiPllInit;
DSI_CmdCfgTypeDef dsiCmdMode;
DSI_LPCmdTypeDef dsiAPBCmd;
/* Filling the DSI intialization struct. */
dsiHandle.Instance = DSI; // There is only one DSI interface
dsiHandle.Init.AutomaticClockLaneControl = DSI_AUTO_CLK_LANE_CTRL_ENABLE; // Automatic clock lane control: powers down the clock lane when not in use
/* Highest speed = 500MHz. */
uint16_t laneByteClk_kHz = 62500; /* 500 MHz / 8 = 62.5 MHz = 62500 kHz */
/* TXEscapeCkdiv = f(LaneByteClk)/15.62 = 4 -> 500MHz/4 = 25MHz datasheet says around 20MHz */
dsiHandle.Init.TXEscapeCkdiv = laneByteClk_kHz/15620; // Low power clock relative to the laneByteClock
dsiHandle.Init.NumberOfLanes = DSI_TWO_DATA_LANES; // Two data lines for the fastest transfer speed
/* Fill in the command mode struct. */
dsiCmdMode.VirtualChannelID = 0; // The first virtual channel
/* Select the appropriate color coding. */
#ifdef GDISP_PIXELFORMAT_RGB565
dsiCmdMode.ColorCoding = DSI_RGB565;
#else
dsiCmdMode.ColorCoding = DSI_RGB888;
#endif
dsiCmdMode.CommandSize = driverCfg.width; // Amount of pixels sent at once -> one line at a time
dsiCmdMode.TearingEffectSource = DSI_TE_EXTERNAL; // Use pin PJ2
dsiCmdMode.TearingEffectPolarity = DSI_TE_RISING_EDGE;
dsiCmdMode.HSPolarity = DSI_HSYNC_ACTIVE_HIGH;
dsiCmdMode.VSPolarity = DSI_VSYNC_ACTIVE_HIGH;
dsiCmdMode.DEPolarity = DSI_DATA_ENABLE_ACTIVE_HIGH;
dsiCmdMode.VSyncPol = DSI_VSYNC_FALLING;
dsiCmdMode.AutomaticRefresh = DSI_AR_ENABLE; // Use the automatic refresh mode
dsiCmdMode.TEAcknowledgeRequest = DSI_TE_ACKNOWLEDGE_DISABLE; // Not needed when using TE through GPIO
/* GPIO configuration. */
GPIO_InitTypeDef gpioInit;
/* PH7 LCD_RESET */
__HAL_RCC_GPIOH_CLK_ENABLE();
gpioInit.Pin = GPIO_PIN_7;
gpioInit.Mode = GPIO_MODE_OUTPUT_OD;
gpioInit.Pull = GPIO_NOPULL;
gpioInit.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(GPIOH, &gpioInit);
/* PJ2 DSIHOST_TE */
__HAL_RCC_GPIOJ_CLK_ENABLE();
gpioInit.Pin = GPIO_PIN_2;
gpioInit.Mode = GPIO_MODE_AF_PP;
gpioInit.Alternate = GPIO_AF13_DSI;
HAL_GPIO_Init(GPIOJ, &gpioInit);
/* PA3 LCD_BL_CTRL This pin is not physically connected. */
__HAL_RCC_GPIOA_CLK_ENABLE();
gpioInit.Pin = GPIO_PIN_3;
gpioInit.Mode = GPIO_MODE_OUTPUT_OD;
HAL_GPIO_Init(GPIOA, &gpioInit);
/* Fvco = f(CLKin/IDF) * 2 * NDIV; fPHI = Fvco/(2*ODF) */
#if !defined(USE_STM32469I_DISCO_REVA)
/* fPHI = CLKin*62.5; Fvco = CLKin*125 */
dsiPllInit.PLLNDIV = 125;
dsiPllInit.PLLIDF = DSI_PLL_IN_DIV2;
#else
/* fPHI = CLKin*20; Fvco = CLKin*40 */
dsiPllInit.PLLNDIV = 100;
dsiPllInit.PLLIDF = DSI_PLL_IN_DIV5;
#endif
dsiPllInit.PLLODF = DSI_PLL_OUT_DIV1;
/* Initialize the DSI peripheral. */
HAL_DSI_Init(&dsiHandle, &dsiPllInit);
DSI_PHY_TimerTypeDef PhyTimings;
/* Configure DSI PHY HS2LP and LP2HS timings. Datasheet says 95ns max */
PhyTimings.ClockLaneHS2LPTime = 35;
PhyTimings.ClockLaneLP2HSTime = 35;
PhyTimings.DataLaneHS2LPTime = 35;
PhyTimings.DataLaneLP2HSTime = 35;
PhyTimings.DataLaneMaxReadTime = 0;
PhyTimings.StopWaitTime = 10;
HAL_DSI_ConfigPhyTimer(&dsiHandle, &PhyTimings);
/* Configure adapted command mode. */
HAL_DSI_ConfigAdaptedCommandMode(&dsiHandle, &dsiCmdMode);
/* Hardware reset LCD */
reset_lcd(g);
/* Initialize the SDRAM */
BSP_SDRAM_Init();
}
static GFXINLINE void set_backlight(GDisplay* g, uint8_t percent)
{
(void)g;
(void)percent;
}
/**
* @brief Perform a hardware reset on the LCD.
*
* @param g: Display parameter structure.
*/
static GFXINLINE void reset_lcd(GDisplay* g)
{
(void)g;
/* Hardware display reset. */
HAL_GPIO_WritePin(GPIOH, GPIO_PIN_7, GPIO_PIN_RESET);
gfxSleepMilliseconds(20);
HAL_GPIO_WritePin(GPIOH, GPIO_PIN_7, GPIO_PIN_SET);
gfxSleepMilliseconds(10);
/* Turn on backlight. */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3, GPIO_PIN_RESET);
}
/**
* @brief Extra initialization that is performed after the LTDC intialization.
*
* @param g: Display paramter structure.
*/
static GFXINLINE void post_init_board(GDisplay* g)
{
(void)g;
DSI_LPCmdTypeDef dsiAPBCmd;
/* Enable the DSI host and wrapper after the LTDC initialization
To avoid any synchronization issue, the DSI shall be started after enabling the LTDC */
HAL_DSI_Start(&dsiHandle);
/* The configuration commands for the LCD have to be send through the dsiAPBCmd
* interface as the adapted command mode only supports DCS, WMS and WMC commands. */
dsiAPBCmd.LPGenShortWriteNoP = DSI_LP_GSW0P_ENABLE; // Put everything in low power mode
dsiAPBCmd.LPGenShortWriteOneP = DSI_LP_GSW1P_ENABLE;
dsiAPBCmd.LPGenShortWriteTwoP = DSI_LP_GSW2P_ENABLE;
dsiAPBCmd.LPGenShortReadNoP = DSI_LP_GSR0P_ENABLE;
dsiAPBCmd.LPGenShortReadOneP = DSI_LP_GSR1P_ENABLE;
dsiAPBCmd.LPGenShortReadTwoP = DSI_LP_GSR2P_ENABLE;
dsiAPBCmd.LPGenLongWrite = DSI_LP_GLW_ENABLE;
dsiAPBCmd.LPDcsShortWriteNoP = DSI_LP_DSW0P_ENABLE;
dsiAPBCmd.LPDcsShortWriteOneP = DSI_LP_DSW1P_ENABLE;
dsiAPBCmd.LPDcsShortReadNoP = DSI_LP_DSR0P_ENABLE;
dsiAPBCmd.LPDcsLongWrite = DSI_LP_DLW_ENABLE;
HAL_DSI_ConfigCommand(&dsiHandle, &dsiAPBCmd);
/* Configure the LCD. */
#ifdef GDISP_PIXELFORMAT_RGB565
OTM8009A_Init(OTM8009A_FORMAT_RBG565, 1);
#else
OTM8009A_Init(OTM8009A_FORMAT_RGB888, 1);
#endif
/* Enable the tearing effect line. */
HAL_DSI_ShortWrite(&dsiHandle, 0, DSI_DCS_SHORT_PKT_WRITE_P1, DSI_SET_TEAR_ON, 0); // Only V-Blanking info
/* Disable the APB command mode again to go into adapted command mode. (going into high speed mode) */
dsiAPBCmd.LPGenShortWriteNoP = DSI_LP_GSW0P_DISABLE;
dsiAPBCmd.LPGenShortWriteOneP = DSI_LP_GSW1P_DISABLE;
dsiAPBCmd.LPGenShortWriteTwoP = DSI_LP_GSW2P_DISABLE;
dsiAPBCmd.LPGenShortReadNoP = DSI_LP_GSR0P_DISABLE;
dsiAPBCmd.LPGenShortReadOneP = DSI_LP_GSR1P_DISABLE;
dsiAPBCmd.LPGenShortReadTwoP = DSI_LP_GSR2P_DISABLE;
dsiAPBCmd.LPGenLongWrite = DSI_LP_GLW_DISABLE;
dsiAPBCmd.LPDcsShortWriteNoP = DSI_LP_DSW0P_DISABLE;
dsiAPBCmd.LPDcsShortWriteOneP = DSI_LP_DSW1P_DISABLE;
dsiAPBCmd.LPDcsShortReadNoP = DSI_LP_DSR0P_DISABLE;
dsiAPBCmd.LPDcsLongWrite = DSI_LP_DLW_DISABLE;
HAL_DSI_ConfigCommand(&dsiHandle, &dsiAPBCmd);
HAL_DSI_Refresh(&dsiHandle);
}
/**
* @brief DCS or Generic short/long write command
* @param NbrParams: Number of parameters. It indicates the write command mode:
* If inferior to 2, a long write command is performed else short.
* @param pParams: Pointer to parameter values table.
* @retval HAL status
*/
void DSI_IO_WriteCmd(uint32_t NbrParams, uint8_t *pParams)
{
if(NbrParams <= 1)
{
HAL_DSI_ShortWrite(&dsiHandle, 0, DSI_DCS_SHORT_PKT_WRITE_P1, pParams[0], pParams[1]);
}
else
{
HAL_DSI_LongWrite(&dsiHandle, 0, DSI_DCS_LONG_PKT_WRITE, NbrParams, pParams[NbrParams], pParams);
}
}
/**
* @brief Delay function for the OTM8009A driver.
*
* @param Delay: The requested delay in ms.
*/
void OTM8009A_IO_Delay(uint32_t Delay)
{
gfxSleepMilliseconds(Delay);
}
#endif /* _GDISP_LLD_BOARD_H */