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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 "stm32f746g_discovery_sdram.h"
#include "stm32f7xx_hal_rcc.h"
#include "stm32f7xx_hal_gpio.h"
#include <string.h>
static const ltdcConfig driverCfg = {
480, 272, // Width, Height (pixels)
41, 10, // Horizontal, Vertical sync (pixels)
13, 2, // Horizontal, Vertical back porch (pixels)
32, 2, // Horizontal, Vertical front porch (pixels)
0, // Sync flags
0x000000, // Clear color (RGB888)
{ // Background layer config
(LLDCOLOR_TYPE *)SDRAM_DEVICE_ADDR, // Frame buffer address
480, 272, // Width, Height (pixels)
480 * LTDC_PIXELBYTES, // Line pitch (bytes)
LTDC_PIXELFORMAT, // Pixel format
0, 0, // Start pixel position (x, y)
480, 272, // 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 */
#define RK043FN48H_FREQUENCY_DIVIDER 5
static void configureLcdPins(void)
{
// Enable GPIOs clock
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOEEN; // GPIOE
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOGEN; // GPIOG
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOIEN; // GPIOI
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOJEN; // GPIOJ
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOKEN; // GPIOK
// PI15: LCD_R0
GPIOI->MODER |= GPIO_MODER_MODER15_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_15;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR15_0 | GPIO_OSPEEDER_OSPEEDR15_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*7);
// PJ0: LCD_R1
GPIOJ->MODER |= GPIO_MODER_MODER0_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_0;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR0_0 | GPIO_OSPEEDER_OSPEEDR0_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*0);
// PJ1: LCD_R2
GPIOJ->MODER |= GPIO_MODER_MODER1_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_1;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR1_0 | GPIO_OSPEEDER_OSPEEDR1_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*1);
// PJ2: LCD_R3
GPIOJ->MODER |= GPIO_MODER_MODER2_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_2;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR2_0 | GPIO_OSPEEDER_OSPEEDR2_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*2);
// PJ3: LCD_R4
GPIOJ->MODER |= GPIO_MODER_MODER3_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_3;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR3_0 | GPIO_OSPEEDER_OSPEEDR3_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*3);
// PJ4: LCD_R5
GPIOJ->MODER |= GPIO_MODER_MODER4_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_4;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR4_0 | GPIO_OSPEEDER_OSPEEDR4_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*4);
// PJ5: LCD_R6
GPIOJ->MODER |= GPIO_MODER_MODER5_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_5;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR5_0 | GPIO_OSPEEDER_OSPEEDR5_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*5);
// PJ6: LCD_R7
GPIOJ->MODER |= GPIO_MODER_MODER6_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_6;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR6_0 | GPIO_OSPEEDER_OSPEEDR6_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*6);
// PJ7: LCD_G0
GPIOJ->MODER |= GPIO_MODER_MODER7_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_7;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR7_0 | GPIO_OSPEEDER_OSPEEDR7_1;
GPIOJ->AFR[0] |= ((uint32_t)0xE << 4*7);
// PJ8: LCD_G1
GPIOJ->MODER |= GPIO_MODER_MODER8_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_8;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR8_0 | GPIO_OSPEEDER_OSPEEDR8_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*0);
// PJ9: LCD_G2
GPIOJ->MODER |= GPIO_MODER_MODER9_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_9;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR9_0 | GPIO_OSPEEDER_OSPEEDR9_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*1);
// PJ10: LCD_G3
GPIOJ->MODER |= GPIO_MODER_MODER10_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_10;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR10_0 | GPIO_OSPEEDER_OSPEEDR10_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*2);
// PJ11: LCD_G4
GPIOJ->MODER |= GPIO_MODER_MODER11_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_11;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR11_0 | GPIO_OSPEEDER_OSPEEDR11_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*3);
// PK0: LCD_G5
GPIOK->MODER |= GPIO_MODER_MODER0_0;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_0;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR0_0 | GPIO_OSPEEDER_OSPEEDR0_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*0);
// PK1: LCD_G6
GPIOK->MODER |= GPIO_MODER_MODER1_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_1;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR1_0 | GPIO_OSPEEDER_OSPEEDR1_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*1);
// PK2: LCD_G7
GPIOK->MODER |= GPIO_MODER_MODER2_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_2;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR2_0 | GPIO_OSPEEDER_OSPEEDR2_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*2);
// PE4: LCD_B0
GPIOE->MODER |= GPIO_MODER_MODER4_1;
GPIOE->OTYPER &=~ GPIO_OTYPER_OT_4;
GPIOE->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR4_0 | GPIO_OSPEEDER_OSPEEDR4_1;
GPIOE->AFR[0] |= ((uint32_t)0xE << 4*4);
// PJ13: LCD_B1
GPIOJ->MODER |= GPIO_MODER_MODER13_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_13;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR13_0 | GPIO_OSPEEDER_OSPEEDR13_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*5);
// PJ14: LCD_B2
GPIOJ->MODER |= GPIO_MODER_MODER14_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_14;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR14_0 | GPIO_OSPEEDER_OSPEEDR14_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*6);
// PJ15: LCD_B3
GPIOJ->MODER |= GPIO_MODER_MODER15_1;
GPIOJ->OTYPER &=~ GPIO_OTYPER_OT_15;
GPIOJ->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR15_0 | GPIO_OSPEEDER_OSPEEDR15_1;
GPIOJ->AFR[1] |= ((uint32_t)0xE << 4*7);
// PG12: LCD_B4
GPIOG->MODER |= GPIO_MODER_MODER12_1;
GPIOG->OTYPER &=~ GPIO_OTYPER_OT_12;
GPIOG->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR12_0 | GPIO_OSPEEDER_OSPEEDR12_1;
GPIOG->AFR[1] |= ((uint32_t)0xE << 4*4);
// PK4: LCD_B5
GPIOK->MODER |= GPIO_MODER_MODER4_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_4;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR4_0 | GPIO_OSPEEDER_OSPEEDR4_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*4);
// PK5: LCD_B6
GPIOK->MODER |= GPIO_MODER_MODER5_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_5;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR5_0 | GPIO_OSPEEDER_OSPEEDR5_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*5);
// PK6: LCD_B7
GPIOK->MODER |= GPIO_MODER_MODER6_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_6;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR6_0 | GPIO_OSPEEDER_OSPEEDR6_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*6);
// PK7: LCD_DE
GPIOK->MODER |= GPIO_MODER_MODER7_1;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_7;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR7_0 | GPIO_OSPEEDER_OSPEEDR7_1;
GPIOK->AFR[0] |= ((uint32_t)0xE << 4*7);
// PI9: LCD_VSYNC
GPIOI->MODER |= GPIO_MODER_MODER9_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_9;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR9_0 | GPIO_OSPEEDER_OSPEEDR9_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*1);
// PI10: LCD_VSYNC
GPIOI->MODER |= GPIO_MODER_MODER10_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_10;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR10_0 | GPIO_OSPEEDER_OSPEEDR10_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*2);
// PI13: LCD_INT
GPIOI->MODER |= GPIO_MODER_MODER13_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_13;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR13_0 | GPIO_OSPEEDER_OSPEEDR13_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*5);
// PI14: LCD_CLK
GPIOI->MODER |= GPIO_MODER_MODER14_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_14;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR14_0 | GPIO_OSPEEDER_OSPEEDR14_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*6);
// PI8: ???
GPIOI->MODER |= GPIO_MODER_MODER8_1;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_8;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR8_0 | GPIO_OSPEEDER_OSPEEDR8_1;
GPIOI->AFR[1] |= ((uint32_t)0xE << 4*0);
// PI12: LCD_DISP_PIN
GPIOI->MODER |= GPIO_MODER_MODER12_0;
GPIOI->OTYPER &=~ GPIO_OTYPER_OT_12;
GPIOI->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR12_0 | GPIO_OSPEEDER_OSPEEDR12_1;
// PK3: LCD_BL_CTRL
GPIOK->MODER |= GPIO_MODER_MODER3_0;
GPIOK->OTYPER &=~ GPIO_OTYPER_OT_3;
GPIOK->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR3_0 | GPIO_OSPEEDER_OSPEEDR3_1;
}
static 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;
switch(g->controllerdisplay) {
case 0:
// Set pin directions
configureLcdPins();
// Enable the display and turn on the backlight
GPIOI->ODR |= (1 << 12); // PowerOn
GPIOK->ODR |= (1 << 3); // Backlight on
#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. */
// RK043FN48H LCD clock configuration
// PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz
// PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz
// PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/5 = 38.4 Mhz
// LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_4 = 38.4/4 = 9.6Mhz
#define STM32_PLLSAIN_VALUE 192
#undef STM32_PLLSAIQ_VALUE
#define STM32_PLLSAIQ_VALUE 7
#undef STM32_PLLSAIR_VALUE
#define STM32_PLLSAIR_VALUE RK043FN48H_FREQUENCY_DIVIDER
#define STM32_PLLSAIR_POST STM32_SAIR_DIV4
RCC->PLLSAICFGR = (STM32_PLLSAIN_VALUE << 6) | (STM32_PLLSAIR_VALUE << 28) | (STM32_PLLSAIQ_VALUE << 24);
RCC->DCKCFGR1 = (RCC->DCKCFGR1 & ~RCC_DCKCFGR1_PLLSAIDIVR) | STM32_PLLSAIR_POST;
RCC->CR |= RCC_CR_PLLSAION;
// Initialise the SDRAM
BSP_SDRAM_Init();
// Clear the SDRAM
//memset((void *)SDRAM_BANK_ADDR, 0, 0x400000);
break;
}
}
static void post_init_board(GDisplay* g) {
(void) g;
}
static void set_backlight(GDisplay* g, uint8_t percent) {
(void) g;
// ST was stupid enought not to hook this up to a pin that
// is able to act as PWM output...
if (percent <= 0) {
GPIOK->ODR &=~ (1 << 3); // Backlight off
} else {
GPIOK->ODR |= (1 << 3); // Backlight on
}
}
#endif /* _GDISP_LLD_BOARD_H */
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