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trezor-firmware/embed/extmod/modtrezorui/display-stm32.h
Pavol Rusnak 14b0d4439a
embed: add GPLv3 source code headers
2018-02-26 14:07:37 +01:00

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/*
* This file is part of the TREZOR project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include STM32_HAL_H
#ifndef DISPLAY_ILI9341V
#define DISPLAY_ILI9341V 0
#endif
#ifndef DISPLAY_ST7789V
#define DISPLAY_ST7789V 1
#endif
// FSMC/FMC Bank 1 - NOR/PSRAM 1
#define DISPLAY_MEMORY_BASE 0x60000000
#define DISPLAY_MEMORY_PIN 16
#define CMD(X) (*((__IO uint8_t *)((uint32_t)(DISPLAY_MEMORY_BASE))) = (X))
#define DATA(X) (*((__IO uint8_t *)((uint32_t)(DISPLAY_MEMORY_BASE | (1 << DISPLAY_MEMORY_PIN)))) = (X))
#define PIXELDATA(X) DATA((X) >> 8); DATA((X) & 0xFF)
#define LED_PWM_TIM_PERIOD (10000)
static void __attribute__((unused)) display_sleep(void)
{
#if DISPLAY_ILI9341V || DISPLAY_ST7789V
CMD(0x28); // DISPOFF: Display Off
CMD(0x10); // SLPIN: Sleep in
HAL_Delay(5); // need to wait 5 milliseconds after "sleep in" before sending any new commands
#endif
}
static void display_unsleep(void)
{
#if DISPLAY_ILI9341V || DISPLAY_ST7789V
CMD(0x11); // SLPOUT: Sleep Out
HAL_Delay(5); // need to wait 5 milliseconds after "sleep out" before sending any new commands
CMD(0x29); // DISPON: Display On
#endif
}
static struct {
uint16_t x, y;
} BUFFER_OFFSET;
static void display_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
x0 += BUFFER_OFFSET.x; x1 += BUFFER_OFFSET.x;
y0 += BUFFER_OFFSET.y; y1 += BUFFER_OFFSET.y;
#if DISPLAY_ILI9341V || DISPLAY_ST7789V
CMD(0x2A); DATA(x0 >> 8); DATA(x0 & 0xFF); DATA(x1 >> 8); DATA(x1 & 0xFF); // column addr set
CMD(0x2B); DATA(y0 >> 8); DATA(y0 & 0xFF); DATA(y1 >> 8); DATA(y1 & 0xFF); // row addr set
CMD(0x2C);
#endif
}
void display_set_orientation(int degrees)
{
#if DISPLAY_ILI9341V || DISPLAY_ST7789V
#define MV (1 << 5)
#define MX (1 << 6)
#define MY (1 << 7)
// MADCTL: Memory Data Access Control
// reference section 9.3 in the ILI9341 manual; 8.12 in the ST7789V manual
BUFFER_OFFSET.x = 0;
BUFFER_OFFSET.y = 0;
uint8_t display_command_parameter = 0;
switch (degrees) {
case 0:
display_command_parameter = 0;
break;
case 90:
display_command_parameter = MV | MX;
break;
case 180:
display_command_parameter = MX | MY;
BUFFER_OFFSET.y = MAX_DISPLAY_RESY - DISPLAY_RESY;
break;
case 270:
display_command_parameter = MV | MY;
BUFFER_OFFSET.x = MAX_DISPLAY_RESY - DISPLAY_RESX;
break;
}
CMD(0x36); DATA(display_command_parameter);
display_set_window(0, 0, DISPLAY_RESX - 1, DISPLAY_RESY - 1); // reset the column and page extents
#endif
}
void display_set_backlight(int val)
{
TIM1->CCR1 = LED_PWM_TIM_PERIOD * val / 255;
}
void display_hardware_reset(void)
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_RESET); // LCD_RST/PC14
// wait 10 milliseconds. only needs to be low for 10 microseconds.
// my dev display module ties display reset and touch panel reset together.
// keeping this low for max(display_reset_time, ctpm_reset_time) aids development and does not hurt.
HAL_Delay(10);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_SET); // LCD_RST/PC14
HAL_Delay(120); // max wait time for hardware reset is 120 milliseconds (experienced display flakiness using only 5ms wait before sending commands)
}
void display_init(void)
{
// init peripherials
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_TIM1_CLK_ENABLE();
__HAL_RCC_FMC_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStructure;
// LCD_PWM/PA7 (backlight control)
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF1_TIM1;
GPIO_InitStructure.Pin = GPIO_PIN_7;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
// enable PWM timer
TIM_HandleTypeDef TIM1_Handle;
TIM1_Handle.Instance = TIM1;
TIM1_Handle.Init.Period = LED_PWM_TIM_PERIOD - 1;
// TIM1/APB2 source frequency equals to SystemCoreClock in our configuration, we want 1 MHz
TIM1_Handle.Init.Prescaler = SystemCoreClock / 1000000 - 1;
TIM1_Handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
TIM1_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
TIM1_Handle.Init.RepetitionCounter = 0;
HAL_TIM_PWM_Init(&TIM1_Handle);
TIM_OC_InitTypeDef TIM_OC_InitStructure;
TIM_OC_InitStructure.Pulse = 0;
TIM_OC_InitStructure.OCMode = TIM_OCMODE_PWM2;
TIM_OC_InitStructure.OCPolarity = TIM_OCPOLARITY_HIGH;
TIM_OC_InitStructure.OCFastMode = TIM_OCFAST_DISABLE;
TIM_OC_InitStructure.OCNPolarity = TIM_OCNPOLARITY_HIGH;
TIM_OC_InitStructure.OCIdleState = TIM_OCIDLESTATE_SET;
TIM_OC_InitStructure.OCNIdleState = TIM_OCNIDLESTATE_SET;
HAL_TIM_PWM_ConfigChannel(&TIM1_Handle, &TIM_OC_InitStructure, TIM_CHANNEL_1);
display_backlight(0);
HAL_TIM_PWM_Start(&TIM1_Handle, TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Start(&TIM1_Handle, TIM_CHANNEL_1);
// LCD_RST/PC14
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Alternate = 0;
GPIO_InitStructure.Pin = GPIO_PIN_14;
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_14, GPIO_PIN_RESET); // default to keeping display in reset
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
// LCD_FMARK/PD12 (tearing effect)
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStructure.Alternate = 0;
GPIO_InitStructure.Pin = GPIO_PIN_12;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF12_FMC;
// LCD_CS/PD7 LCD_RS/PD11 LCD_RD/PD4 LCD_WR/PD5
GPIO_InitStructure.Pin = GPIO_PIN_7 | GPIO_PIN_11 | GPIO_PIN_4 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
// LCD_D0/PD14 LCD_D1/PD15 LCD_D2/PD0 LCD_D3/PD1
GPIO_InitStructure.Pin = GPIO_PIN_14 | GPIO_PIN_15 | GPIO_PIN_0 | GPIO_PIN_1;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
// LCD_D4/PE7 LCD_D5/PE8 LCD_D6/PE9 LCD_D7/PE10
GPIO_InitStructure.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10;
HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
// Reference UM1725 "Description of STM32F4 HAL and LL drivers", section 64.2.1 "How to use this driver"
SRAM_HandleTypeDef external_display_data_sram;
external_display_data_sram.Instance = FMC_NORSRAM_DEVICE;
external_display_data_sram.Init.NSBank = FMC_NORSRAM_BANK1;
external_display_data_sram.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
external_display_data_sram.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
external_display_data_sram.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_8;
external_display_data_sram.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
external_display_data_sram.Init.WrapMode = FMC_WRAP_MODE_DISABLE;
external_display_data_sram.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
external_display_data_sram.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
external_display_data_sram.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
external_display_data_sram.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
external_display_data_sram.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
external_display_data_sram.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
external_display_data_sram.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
external_display_data_sram.Init.PageSize = FMC_PAGE_SIZE_NONE;
// reference RM0090 section 37.5 Table 259, 37.5.4, Mode 1 SRAM, and 37.5.6
FMC_NORSRAM_TimingTypeDef normal_mode_timing;
normal_mode_timing.AddressSetupTime = 4;
normal_mode_timing.AddressHoldTime = 1;
normal_mode_timing.DataSetupTime = 4;
normal_mode_timing.BusTurnAroundDuration = 0;
normal_mode_timing.CLKDivision = 2;
normal_mode_timing.DataLatency = 2;
normal_mode_timing.AccessMode = FMC_ACCESS_MODE_A;
HAL_SRAM_Init(&external_display_data_sram, &normal_mode_timing, NULL);
display_hardware_reset();
#if DISPLAY_ILI9341V
// most recent manual: https://www.newhavendisplay.com/app_notes/ILI9341.pdf
CMD(0x35); DATA(0x00); // TEON: Tearing Effect Line On; V-blanking only
CMD(0x3A); DATA(0x55); // COLMOD: Interface Pixel format; 65K color: 16-bit/pixel (RGB 5-6-5 bits input)
CMD(0xB6); DATA(0x0A); DATA(0xC2); DATA(0x27); DATA(0x00); // Display Function Control: gate scan direction 319 -> 0
CMD(0xF6); DATA(0x09); DATA(0x30); DATA(0x00); // Interface Control: XOR BGR as ST7789V does
// the above config is the most important and definitely necessary
CMD(0xCF); DATA(0x00); DATA(0xC1); DATA(0x30);
CMD(0xED); DATA(0x64); DATA(0x03); DATA(0x12); DATA(0x81);
CMD(0xE8); DATA(0x85); DATA(0x10); DATA(0x7A);
CMD(0xF7); DATA(0x20);
CMD(0xEA); DATA(0x00); DATA(0x00);
CMD(0xC0); DATA(0x23); // power control VRH[5:0]
CMD(0xC1); DATA(0x12); // power control SAP[2:0] BT[3:0]
CMD(0xC5); DATA(0x60); DATA(0x44); // vcm control 1
CMD(0xC7); DATA(0x8A); // vcm control 2
CMD(0xB1); DATA(0x00); DATA(0x18); // framerate
CMD(0xF2); DATA(0x00); // 3 gamma func disable
// gamma curve 1
CMD(0xE0); DATA(0x0F); DATA(0x2F); DATA(0x2C); DATA(0x0B); DATA(0x0F); DATA(0x09); DATA(0x56); DATA(0xD9); DATA(0x4A); DATA(0x0B); DATA(0x14); DATA(0x05); DATA(0x0C); DATA(0x06); DATA(0x00);
// gamma curve 2
CMD(0xE1); DATA(0x00); DATA(0x10); DATA(0x13); DATA(0x04); DATA(0x10); DATA(0x06); DATA(0x25); DATA(0x26); DATA(0x3B); DATA(0x04); DATA(0x0B); DATA(0x0A); DATA(0x33); DATA(0x39); DATA(0x0F);
#endif
#if DISPLAY_ST7789V
CMD(0x35); DATA(0x00); // TEON: Tearing Effect Line On; V-blanking only
CMD(0x3A); DATA(0x55); // COLMOD: Interface Pixel format; 65K color: 16-bit/pixel (RGB 5-6-5 bits input)
CMD(0xDF); DATA(0x5A); DATA(0x69); DATA(0x02); DATA(0x01); // CMD2EN: Commands in command table 2 can be executed when EXTC level is Low
CMD(0xC0); DATA(0x20); // LCMCTRL: LCM Control: XOR RGB setting
CMD(0xE4); DATA(0x1D); DATA(0x0A); DATA(0x11); // GATECTRL: Gate Control; NL = 240 gate lines, first scan line is gate 80.; gate scan direction 319 -> 0
// the above config is the most important and definitely necessary
CMD(0xD0); DATA(0xA4); DATA(0xA1); // PWCTRL1: Power Control 1
// gamma curve 1
// CMD(0xE0); DATA(0x70); DATA(0x2C); DATA(0x2E); DATA(0x15); DATA(0x10); DATA(0x09); DATA(0x48); DATA(0x33); DATA(0x53); DATA(0x0B); DATA(0x19); DATA(0x18); DATA(0x20); DATA(0x25);
// gamma curve 2
// CMD(0xE1); DATA(0x70); DATA(0x2C); DATA(0x2E); DATA(0x15); DATA(0x10); DATA(0x09); DATA(0x48); DATA(0x33); DATA(0x53); DATA(0x0B); DATA(0x19); DATA(0x18); DATA(0x20); DATA(0x25);
#endif
display_clear();
display_unsleep();
}
void display_refresh(void)
{
// synchronize with the panel synchronization signal in order to avoid visual tearing effects
while (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
while (GPIO_PIN_SET == HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12)) { }
}
void display_save(const char *filename)
{
}
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