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ili9341.c
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ili9341.c
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/*
* Copyright (c) 2019-2023, Dmitry (DiSlord) [email protected]
* Based on TAKAHASHI Tomohiro (TTRFTECH) [email protected]
* All rights reserved.
*
* This 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, or (at your option)
* any later version.
*
* The software 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "ch.h"
#include "hal.h"
#include "nanovna.h"
#include "chprintf.h"
#include "spi.h"
// Pin macros for LCD
#define LCD_CS_LOW palClearPad(GPIOB, GPIOB_LCD_CS)
#define LCD_CS_HIGH palSetPad(GPIOB, GPIOB_LCD_CS)
#define LCD_RESET_ASSERT palClearPad(GPIOA, GPIOA_LCD_RESET)
#define LCD_RESET_NEGATE palSetPad(GPIOA, GPIOA_LCD_RESET)
#define LCD_DC_CMD palClearPad(GPIOB, GPIOB_LCD_CD)
#define LCD_DC_DATA palSetPad(GPIOB, GPIOB_LCD_CD)
// SPI bus for LCD
#define LCD_SPI SPI1
#ifdef __USE_DISPLAY_DMA__
// DMA channels for used in LCD SPI bus
#define LCD_DMA_RX DMA1_Channel2 // DMA1 channel 2 use for SPI1 rx
#define LCD_DMA_TX DMA1_Channel3 // DMA1 channel 3 use for SPI1 tx
#endif
// Custom display definition
#ifdef LCD_DRIVER_ILI9341
// Set SPI bus speed for LCD
#define LCD_SPI_SPEED SPI_BR_DIV2
#ifdef DISPLAY_ST7789
#define LCD_SPI_RX_SPEED SPI_BR_DIV16
#endif
// Read speed, need more slow, not define if need use some as Tx speed
//#define LCD_SPI_RX_SPEED SPI_BR_DIV4
// Allow enable DMA for read display data (can not stable on full speed, on less speed slower)
#define __USE_DISPLAY_DMA_RX__
#endif
#ifdef LCD_DRIVER_ST7796S
// Set SPI bus speed for LCD
#define LCD_SPI_SPEED SPI_BR_DIV2
// Read speed, need more slow, not define if need use some as Tx speed
#define LCD_SPI_RX_SPEED SPI_BR_DIV4
// Allow enable DMA for read display data
#define __USE_DISPLAY_DMA_RX__
#endif
// Disable DMA rx on disabled DMA tx
#ifndef __USE_DISPLAY_DMA__
#undef __USE_DISPLAY_DMA_RX__
#endif
// LCD display buffer
pixel_t spi_buffer[SPI_BUFFER_SIZE];
// Default foreground & background colors
pixel_t foreground_color = 0;
pixel_t background_color = 0;
//*****************************************************
// SPI functions, settings and data
//*****************************************************
void spi_TxByte(const uint8_t data) {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_8BIT(LCD_SPI, data);
}
// Transmit buffer to SPI bus (len should be > 0)
void spi_TxBuffer(const uint8_t *buffer, uint16_t len) {
while(len--) {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_8BIT(LCD_SPI, *buffer++);
}
}
// Receive byte from SPI bus
uint8_t spi_RxByte(void) {
// Start RX clock (by sending data)
SPI_WRITE_8BIT(LCD_SPI, 0xFF);
while (SPI_RX_IS_EMPTY(LCD_SPI));
return SPI_READ_8BIT(LCD_SPI);
}
// Receive buffer from SPI bus (len should be > 0)
void spi_RxBuffer(uint8_t *buffer, uint16_t len) {
do{
SPI_WRITE_8BIT(LCD_SPI, 0xFF);
while (SPI_RX_IS_EMPTY(LCD_SPI));
*buffer++ = SPI_READ_8BIT(LCD_SPI);
}while(--len);
}
void spi_DropRx(void) {
// Drop Rx buffer after tx and wait tx complete
#if 1
while (SPI_RX_IS_NOT_EMPTY(LCD_SPI)||SPI_IS_BUSY(LCD_SPI))
(void)SPI_READ_8BIT(LCD_SPI);
(void)SPI_READ_8BIT(LCD_SPI);
#else
while(SPI_IS_BUSY(LCD_SPI));
(void)SPI_READ_16BIT(LCD_SPI);
(void)SPI_READ_16BIT(LCD_SPI);
#endif
}
//*****************************************************
// SPI DMA settings and data
//*****************************************************
#ifdef __USE_DISPLAY_DMA__
static const uint32_t txdmamode = 0
| STM32_DMA_CR_PL(STM32_SPI_SPI1_DMA_PRIORITY) // Set priority
| STM32_DMA_CR_DIR_M2P; // Memory to Spi
static const uint32_t rxdmamode = 0
| STM32_DMA_CR_PL(STM32_SPI_SPI1_DMA_PRIORITY) // Set priority
| STM32_DMA_CR_DIR_P2M; // SPI to Memory
// SPI transmit byte buffer use DMA (65535 bytes limit)
static inline void spi_DMATxBuffer(const uint8_t *buffer, uint16_t len, bool wait) {
dmaChannelSetMemory(LCD_DMA_TX, buffer);
dmaChannelSetTransactionSize(LCD_DMA_TX, len);
dmaChannelSetMode(LCD_DMA_TX, txdmamode | STM32_DMA_CR_BYTE | STM32_DMA_CR_MINC | STM32_DMA_CR_EN);
if (wait)
dmaChannelWaitCompletion(LCD_DMA_TX);
}
// Wait DMA Rx completion
static void dmaChannelWaitCompletionRxTx(void) {
dmaChannelWaitCompletion(LCD_DMA_TX);
dmaChannelWaitCompletion(LCD_DMA_RX);
// while (SPI_IS_BUSY(LCD_SPI)); // Wait SPI tx/rx
}
// SPI receive byte buffer use DMA
static const uint16_t dummy_tx = 0xFFFF;
static inline void spi_DMARxBuffer(uint8_t *buffer, uint16_t len, bool wait) {
// Init Rx DMA buffer, size, mode (spi and mem data size is 8 bit), and start
dmaChannelSetMemory(LCD_DMA_RX, buffer);
dmaChannelSetTransactionSize(LCD_DMA_RX, len);
dmaChannelSetMode(LCD_DMA_RX, rxdmamode | STM32_DMA_CR_BYTE | STM32_DMA_CR_MINC | STM32_DMA_CR_EN);
// Init dummy Tx DMA (for rx clock), size, mode (spi and mem data size is 8 bit), and start
dmaChannelSetMemory(LCD_DMA_TX, &dummy_tx);
dmaChannelSetTransactionSize(LCD_DMA_TX, len);
dmaChannelSetMode(LCD_DMA_TX, txdmamode | STM32_DMA_CR_BYTE | STM32_DMA_CR_EN);
if (wait)
dmaChannelWaitCompletionRxTx();
}
#else
// Replace DMA function vs no DMA
#define dmaChannelWaitCompletionRxTx() {}
#define spi_DMATxBuffer(buffer, len) spi_TxBuffer(buffer, len)
#define spi_DMARxBuffer(buffer, len) spi_RxBuffer(buffer, len)
#endif // __USE_DISPLAY_DMA__
static void spi_init(void) {
rccEnableSPI1(FALSE);
LCD_SPI->CR1 = 0;
LCD_SPI->CR1 = SPI_CR1_MSTR // SPI is MASTER
| SPI_CR1_SSM // Software slave management (The external NSS pin is free for other application uses)
| SPI_CR1_SSI // Internal slave select (This bit has an effect only when the SSM bit is set. Allow use NSS pin as I/O)
| LCD_SPI_SPEED // Baud rate control
| SPI_CR1_CPHA // Clock Phase
| SPI_CR1_CPOL // Clock Polarity
;
LCD_SPI->CR2 = SPI_CR2_8BIT // SPI data size, set to 8 bit
| SPI_CR2_FRXTH // SPI_SR_RXNE generated every 8 bit data
// | SPI_CR2_SSOE //
#ifdef __USE_DISPLAY_DMA__
| SPI_CR2_TXDMAEN // Tx DMA enable
#ifdef __USE_DISPLAY_DMA_RX__
| SPI_CR2_RXDMAEN // Rx DMA enable
#endif
#endif
;
// Init SPI DMA Peripheral
#ifdef __USE_DISPLAY_DMA__
dmaChannelSetPeripheral(LCD_DMA_TX, &LCD_SPI->DR); // DMA Peripheral Tx
#ifdef __USE_DISPLAY_DMA_RX__
dmaChannelSetPeripheral(LCD_DMA_RX, &LCD_SPI->DR); // DMA Peripheral Rx
#endif
#endif
// Enable DMA on SPI
LCD_SPI->CR1|= SPI_CR1_SPE; //SPI enable
}
//*****************************************************
// Display driver functions
//*****************************************************
// Display commands list
#define ILI9341_NOP 0x00
#define ILI9341_SOFTWARE_RESET 0x01
#define ILI9341_READ_IDENTIFICATION 0x04
#define ILI9341_READ_STATUS 0x09
#define ILI9341_READ_POWER_MODE 0x0A
#define ILI9341_READ_MADCTL 0x0B
#define ILI9341_READ_PIXEL_FORMAT 0x0C
#define ILI9341_READ_IMAGE_FORMAT 0x0D
#define ILI9341_READ_SIGNAL_MODE 0x0E
#define ILI9341_READ_SELF_DIAGNOSTIC 0x0F
#define ILI9341_SLEEP_IN 0x10
#define ILI9341_SLEEP_OUT 0x11
#define ILI9341_PARTIAL_MODE_ON 0x12
#define ILI9341_NORMAL_DISPLAY_MODE_ON 0x13
#define ILI9341_INVERSION_OFF 0x20
#define ILI9341_INVERSION_ON 0x21
#define ILI9341_GAMMA_SET 0x26
#define ILI9341_DISPLAY_OFF 0x28
#define ILI9341_DISPLAY_ON 0x29
#define ILI9341_COLUMN_ADDRESS_SET 0x2A
#define ILI9341_PAGE_ADDRESS_SET 0x2B
#define ILI9341_MEMORY_WRITE 0x2C
#define ILI9341_COLOR_SET 0x2D
#define ILI9341_MEMORY_READ 0x2E
#define ILI9341_PARTIAL_AREA 0x30
#define ILI9341_VERTICAL_SCROLLING_DEF 0x33
#define ILI9341_TEARING_LINE_OFF 0x34
#define ILI9341_TEARING_LINE_ON 0x35
#define ILI9341_MEMORY_ACCESS_CONTROL 0x36
#define ILI9341_VERTICAL_SCROLLING 0x37
#define ILI9341_IDLE_MODE_OFF 0x38
#define ILI9341_IDLE_MODE_ON 0x39
#define ILI9341_PIXEL_FORMAT_SET 0x3A
#define ILI9341_WRITE_MEMORY_CONTINUE 0x3C
#define ILI9341_READ_MEMORY_CONTINUE 0x3E
#define ILI9341_SET_TEAR_SCANLINE 0x44
#define ILI9341_GET_SCANLINE 0x45
#define ILI9341_WRITE_BRIGHTNESS 0x51
#define ILI9341_READ_BRIGHTNESS 0x52
#define ILI9341_WRITE_CTRL_DISPLAY 0x53
#define ILI9341_READ_CTRL_DISPLAY 0x54
#define ILI9341_WRITE_CA_BRIGHTNESS 0x55
#define ILI9341_READ_CA_BRIGHTNESS 0x56
#define ILI9341_WRITE_CA_MIN_BRIGHTNESS 0x5E
#define ILI9341_READ_CA_MIN_BRIGHTNESS 0x5F
#define ILI9341_READ_ID1 0xDA
#define ILI9341_READ_ID2 0xDB
#define ILI9341_READ_ID3 0xDC
#define ILI9341_RGB_INTERFACE_CONTROL 0xB0
#define ILI9341_FRAME_RATE_CONTROL_1 0xB1
#define ILI9341_FRAME_RATE_CONTROL_2 0xB2
#define ILI9341_FRAME_RATE_CONTROL_3 0xB3
#define ILI9341_DISPLAY_INVERSION_CONTROL 0xB4
#define ILI9341_BLANKING_PORCH_CONTROL 0xB5
#define ILI9341_DISPLAY_FUNCTION_CONTROL 0xB6
#define ILI9341_ENTRY_MODE_SET 0xB7
#define ILI9341_BACKLIGHT_CONTROL_1 0xB8
#define ILI9341_BACKLIGHT_CONTROL_2 0xB9
#define ILI9341_BACKLIGHT_CONTROL_3 0xBA
#define ILI9341_BACKLIGHT_CONTROL_4 0xBB
#define ILI9341_BACKLIGHT_CONTROL_5 0xBC
#define ILI9341_BACKLIGHT_CONTROL_7 0xBE
#define ILI9341_BACKLIGHT_CONTROL_8 0xBF
#define ILI9341_POWER_CONTROL_1 0xC0
#define ILI9341_POWER_CONTROL_2 0xC1
#define ILI9341_VCOM_CONTROL_1 0xC5
#define ILI9341_VCOM_CONTROL_2 0xC7
#define ILI9341_POWERA 0xCB
#define ILI9341_POWERB 0xCF
#define ILI9341_NV_MEMORY_WRITE 0xD0
#define ILI9341_NV_PROTECTION_KEY 0xD1
#define ILI9341_NV_STATUS_READ 0xD2
#define ILI9341_READ_ID4 0xD3
#define ILI9341_POSITIVE_GAMMA_CORRECTION 0xE0
#define ILI9341_NEGATIVE_GAMMA_CORRECTION 0xE1
#define ILI9341_DIGITAL_GAMMA_CONTROL_1 0xE2
#define ILI9341_DIGITAL_GAMMA_CONTROL_2 0xE3
#define ILI9341_DTCA 0xE8
#define ILI9341_DTCB 0xEA
#define ILI9341_POWER_SEQ 0xED
#define ILI9341_3GAMMA_EN 0xF2
#define ILI9341_INTERFACE_CONTROL 0xF6
#define ILI9341_PUMP_RATIO_CONTROL 0xF7
//
// ILI9341_MEMORY_ACCESS_CONTROL registers
//
#define ILI9341_MADCTL_MY 0x80
#define ILI9341_MADCTL_MX 0x40
#define ILI9341_MADCTL_MV 0x20
#define ILI9341_MADCTL_ML 0x10
#define ILI9341_MADCTL_BGR 0x08
#define ILI9341_MADCTL_MH 0x04
#define ILI9341_MADCTL_RGB 0x00
// Disable inline for this function
static void ili9341_send_command(uint8_t cmd, uint16_t len, const uint8_t *data) {
// Uncomment on low speed SPI (possible get here before previous tx complete)
while (SPI_IS_BUSY(LCD_SPI));
LCD_CS_LOW;
LCD_DC_CMD;
SPI_WRITE_8BIT(LCD_SPI, cmd);
// Need wait transfer complete and set data bit
while (SPI_IS_BUSY(LCD_SPI));
LCD_DC_DATA;
spi_TxBuffer(data, len);
// while (SPI_IN_TX_RX(LCD_SPI));
//LCD_CS_HIGH;
}
// Disable inline for this function
uint32_t lcd_send_command(uint8_t cmd, uint8_t len, const uint8_t *data) {
lcd_bulk_finish();
// Set read speed (if need different)
SPI_BR_SET(LCD_SPI, SPI_BR_DIV256);
// Send
ili9341_send_command(cmd, len, data);
// Skip data from rx buffer
spi_DropRx();
uint32_t ret;
ret = spi_RxByte();ret<<=8;
ret|= spi_RxByte();ret<<=8;
ret|= spi_RxByte();ret<<=8;
ret|= spi_RxByte();
LCD_CS_HIGH;
SPI_BR_SET(LCD_SPI, LCD_SPI_SPEED);
return ret;
}
#define ST7789V_NOP 0x00 // No Operation
#define ST7789V_SWRESET 0x01 // Software reset
#define ST7789V_RDDID 0x04 // Read Display ID
#define ST7789V_RDDST 0x09 // Read Display Status
#define ST7789V_RDDPM 0x0A // Read Display Power Mode
#define ST7789V_RDDMADCTL 0x0B // Read Display MADCTL
#define ST7789V_RDDCOLMOD 0x0C // Read Display Pixel Format
#define ST7789V_RDDIM 0x0D // Read Display Image Mode
#define ST7789V_RDDSM 0x0E // Read Display Signal Mode
#define ST7789V_RDDSDR 0x0F // Read Display Self-Diagnostic Result
#define ST7789V_SLPIN 0x10 // Sleep In
#define ST7789V_SLPOUT 0x11 // Sleep Out
#define ST7789V_PTLON 0x12 // Partial Display Mode On
#define ST7789V_NORON 0x13 // Normal Display Mode On
#define ST7789V_INVOFF 0x20 // Display Inversion Off
#define ST7789V_INVON 0x21 // Display Inversion On
#define ST7789V_GAMSET 0x26 // Gamma Set
#define ST7789V_DISPOFF 0x28 // Display Off
#define ST7789V_DISPON 0x29 // Display On
#define ST7789V_CASET 0x2A // Column Address Set
#define ST7789V_RASET 0x2B // Row Address Set
#define ST7789V_RAMWR 0x2C // Memory Write
#define ST7789V_RAMRD 0x2E // Memory Read
#define ST7789V_PTLAR 0x30 // Partial Area
#define ST7789V_VSCRDEF 0x33 // Vertical Scrolling Definition
#define ST7789V_TEOFF 0x34 // Tearing Effect Line OFF
#define ST7789V_TEON 0x35 // Tearing Effect Line ON
#define ST7789V_MADCTL 0x36 // Memory Data Access Control
#define ST7789V_VSCSAD 0x37 // Vertical Scroll Start Address of RAM
#define ST7789V_IDMOFF 0x38 // Idle Mode Off
#define ST7789V_IDMON 0x39 // Idle Mode On
#define ST7789V_COLMOD 0x3A // Interface Pixel Format
#define ST7789V_WRMEMC 0x3C // Write Memory Continue
#define ST7789V_RDMEMC 0x3E // Read Memory Continue
#define ST7789V_STE 0x44 // Set Tear Scanline
#define ST7789V_GSCAN 0x45 // Get Scanline
#define ST7789V_WRDISBV 0x51 // Write Display Brightness
#define ST7789V_RDDISBV 0x52 // Read Display Brightness
#define ST7789V_WRCTRLD 0x53 // Write CTRL Display
#define ST7789V_RDCTRLD 0x54 // Read CTRL Value Display
#define ST7789V_WRCACE 0x55 // Write Content Adaptive Brightness Control and Color Enhancement
#define ST7789V_RDCABC 0x56 // Read Content Adaptive Brightness Control
#define ST7789V_WRCABCMB 0x5E // Write CABC Minimum Brightness
#define ST7789V_RDCABCMB 0x5F // Read CABC Minimum Brightness
#define ST7789V_RDABCSDR 0x68 // Read Automatic Brightness Control Self-Diagnostic Result
#define ST7789V_RDID1 0xDA // Read ID1 Value
#define ST7789V_RDID2 0xDB // Read ID2 Value
#define ST7789V_RDID3 0xDC // Read ID3 Value
#define ST7789V_RAMCTRL 0xB0 // RAM Control
#define ST7789V_RGBCTRL 0xB1 // RGB Interface Control
#define ST7789V_PORCTRL 0xB2 // Porch Setting
#define ST7789V_FRCTRL1 0xB3 // Frame Rate Control 1 (In partial mode/ idle colors)
#define ST7789V_GCTRL 0xB7 // Gate Control
#define ST7789V_DGMEN 0xBA // Digital Gamma Enable
#define ST7789V_VCOMS 0xBB // VCOM Setting
#define ST7789V_LCMCTRL 0xC0 // LCM Control
#define ST7789V_IDSET 0xC1 // ID Code Setting
#define ST7789V_VDVVRHEN 0xC2 // VDV and VRH Command Enable
#define ST7789V_VRHS 0xC3 // VRH Set
#define ST7789V_VDVS 0xC4 // VDV Set
#define ST7789V_VCMOFSET 0xC5 // VCOM Offset Set
#define ST7789V_FRCTRL2 0xC6 // Frame Rate Control in Normal Mode
#define ST7789V_CABCCTRL 0xC7 // CABC Control
#define ST7789V_REGSEL1 0xC8 // Register Value Selection 1
#define ST7789V_REGSEL2 0xCA // Register Value Selection 2
#define ST7789V_PWMFRSEL 0xCC // PWM Frequency Selection
#define ST7789V_PWCTRL1 0xD0 // Power Control 1
#define ST7789V_VAPVANEN 0xD2 // Enable VAP/VAN signal output
#define ST7789V_CMD2EN 0xDF // Command 2 Enable
#define ST7789V_PVGAMCTRL 0xE0 // Positive Voltage Gamma Control
#define ST7789V_NVGAMCTRL 0xE1 // Negative Voltage Gamma Control
#define ST7789V_DGMLUTR 0xE2 // Digital Gamma Look-up Table for Red
#define ST7789V_DGMLUTB 0xE3 // Digital Gamma Look-up Table for Blue
#define ST7789V_GATECTRL 0xE4 // Gate Control
#define ST7789V_SPI2EN 0xE7 // SPI2 Enable
#define ST7789V_PWCTRL2 0xE8 // Power Control 2
#define ST7789V_EQCTRL 0xE9 // Equalize time control
#define ST7789V_PROMCTRL 0xEC // Program Mode Control
#define ST7789V_PROMEN 0xFA // Program Mode Enable
#define ST7789V_NVMSET 0xFC // NVM Setting
#define ST7789V_PROMACT 0xFE // Program action
#define LCD_MADCTL_MY 0x80
#define LCD_MADCTL_MX 0x40
#define LCD_MADCTL_MV 0x20
#define LCD_MADCTL_ML 0x10
#define LCD_MADCTL_BGR 0x08
#define LCD_MADCTL_MH 0x04
#define LCD_MADCTL_RGB 0x00
#ifdef DISPLAY_ST7789
/*
* ST7789 init
*/
#define DISPLAY_ROTATION_0 (LCD_MADCTL_MX | LCD_MADCTL_MV | LCD_MADCTL_RGB)
#define DISPLAY_ROTATION_90 ( LCD_MADCTL_RGB)
#define DISPLAY_ROTATION_180 (LCD_MADCTL_MY | LCD_MADCTL_MV | LCD_MADCTL_RGB)
#define DISPLAY_ROTATION_270 (LCD_MADCTL_MX | LCD_MADCTL_MY | LCD_MADCTL_RGB)
static const uint8_t ST7796S_init_seq[] = {
// cmd, len, data...,
// SW reset
ST7789V_SWRESET, 0,
// display off
ST7789V_DISPOFF, 0,
ST7789V_MADCTL, 1, DISPLAY_ROTATION_0,
ST7789V_COLMOD, 1, 0x55,
//ST7789V_PORCTRL, 5, 0x0C, 0x0C, 0x00, 0x33, 0x33,
//ST7789V_GCTRL, 1, 0x35,
ST7789V_VCOMS, 1, 0x1F, // default 0x20
//ST7789V_LCMCTRL, 1, 0x2C,
ST7789V_VDVVRHEN, 2, 0x01, 0xC3, // default 0x01, 0xFF !!! why need C3? datasheet say 0xFF
//ST7789V_VDVS, 1, 0x20,
//ST7789V_FRCTRL2, 1, 0x0F,
//ST7789V_PWCTRL1, 2, 0xA4, 0xA1,
ST7789V_SLPOUT, 0,
// display on
ST7789V_DISPON, 0,
0 // sentinel
};
#define LCD_INIT ST7796S_init_seq
#else
#define DISPLAY_ROTATION_270 (ILI9341_MADCTL_MX | ILI9341_MADCTL_BGR)
#define DISPLAY_ROTATION_90 (ILI9341_MADCTL_MY | ILI9341_MADCTL_BGR)
#define DISPLAY_ROTATION_0 (ILI9341_MADCTL_MV | ILI9341_MADCTL_BGR)
#define DISPLAY_ROTATION_180 (ILI9341_MADCTL_MX | ILI9341_MADCTL_MY \
| ILI9341_MADCTL_MV | ILI9341_MADCTL_BGR)
static const uint8_t ili9341_init_seq[] = {
// cmd, len, data...,
// SW reset
ILI9341_SOFTWARE_RESET, 0,
// display off
ILI9341_DISPLAY_OFF, 0,
// Power control B
ILI9341_POWERB, 3, 0x00, 0xC1, 0x30,
// Power on sequence control
ILI9341_POWER_SEQ, 4, 0x64, 0x03, 0x12, 0x81,
// Driver timing control A
ILI9341_DTCA, 3, 0x85, 0x00, 0x78,
// Power control A
ILI9341_POWERA, 5, 0x39, 0x2C, 0x00, 0x34, 0x02,
// Pump ratio control
ILI9341_PUMP_RATIO_CONTROL, 1, 0x20,
// Driver timing control B
ILI9341_DTCB, 2, 0x00, 0x00,
// POWER_CONTROL_1
ILI9341_POWER_CONTROL_1, 1, 0x23,
// POWER_CONTROL_2
ILI9341_POWER_CONTROL_2, 1, 0x10,
// VCOM_CONTROL_1
ILI9341_VCOM_CONTROL_1, 2, 0x3e, 0x28,
// VCOM_CONTROL_2
ILI9341_VCOM_CONTROL_2, 1, 0xBE,
// MEMORY_ACCESS_CONTROL
//ILI9341_MEMORY_ACCESS_CONTROL, 1, 0x48, // portlait
ILI9341_MEMORY_ACCESS_CONTROL, 1, DISPLAY_ROTATION_0, // landscape
// COLMOD_PIXEL_FORMAT_SET : 16 bit pixel
ILI9341_PIXEL_FORMAT_SET, 1, 0x55,
// Frame Rate
ILI9341_FRAME_RATE_CONTROL_1, 2, 0x00, 0x18,
// Gamma Function Disable
ILI9341_3GAMMA_EN, 1, 0x00,
// gamma set for curve 01/2/04/08
ILI9341_GAMMA_SET, 1, 0x01,
// positive gamma correction
ILI9341_POSITIVE_GAMMA_CORRECTION, 15, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
// negativ gamma correction
ILI9341_NEGATIVE_GAMMA_CORRECTION, 15, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
// Column Address Set
// ILI9341_COLUMN_ADDRESS_SET, 4, 0x00, 0x00, 0x01, 0x3f, // width 320
// Page Address Set
// ILI9341_PAGE_ADDRESS_SET, 4, 0x00, 0x00, 0x00, 0xef, // height 240
// entry mode
ILI9341_ENTRY_MODE_SET, 1, 0x06,
// display function control
ILI9341_DISPLAY_FUNCTION_CONTROL, 3, 0x08, 0x82, 0x27,
// Interface Control (set WEMODE=0)
ILI9341_INTERFACE_CONTROL, 3, 0x00, 0x00, 0x00,
// sleep out
ILI9341_SLEEP_OUT, 0,
// display on
ILI9341_DISPLAY_ON, 0,
0 // sentinel
};
#define LCD_INIT ili9341_init_seq
#endif
#ifdef LCD_DRIVER_ST7796S
static const uint8_t ST7796S_init_seq[] = {
// SW reset
ILI9341_SOFTWARE_RESET, 0,
// display off
ILI9341_DISPLAY_OFF, 0,
// Interface Mode Control
ILI9341_RGB_INTERFACE_CONTROL, 1, 0x00,
// Frame Rate
ILI9341_FRAME_RATE_CONTROL_1, 1, 0xA,
// Display Inversion Control , 2 Dot
ILI9341_DISPLAY_INVERSION_CONTROL, 1, 0x02,
// RGB/MCU Interface Control
ILI9341_DISPLAY_FUNCTION_CONTROL, 3, 0x02, 0x02, 0x3B,
// EntryMode
ILI9341_ENTRY_MODE_SET, 1, 0xC6,
// Power Control 1
ILI9341_POWER_CONTROL_1, 2, 0x17, 0x15,
// Power Control 2
ILI9341_POWER_CONTROL_2, 1, 0x41,
// VCOM Control
//ILI9341_VCOM_CONTROL_1, 3, 0x00, 0x4D, 0x90,
ILI9341_VCOM_CONTROL_1, 3, 0x00, 0x12, 0x80,
// Memory Access
ILI9341_MEMORY_ACCESS_CONTROL, 1, 0x28, // landscape, BGR
// ILI9341_MEMORY_ACCESS_CONTROL, 1, 0x20, // landscape, RGB
// Interface Pixel Format, 16bpp DPI and DBI and
ILI9341_PIXEL_FORMAT_SET, 1, 0x55,
// P-Gamma
// ILI9341_POSITIVE_GAMMA_CORRECTION, 15, 0x00, 0x03, 0x09, 0x08, 0x16, 0x0A, 0x3F, 0x78, 0x4C, 0x09, 0x0A, 0x08, 0x16, 0x1A, 0x0F,
// N-Gamma
// ILI9341_NEGATIVE_GAMMA_CORRECTION, 15, 0x00, 0X16, 0X19, 0x03, 0x0F, 0x05, 0x32, 0x45, 0x46, 0x04, 0x0E, 0x0D, 0x35, 0x37, 0x0F,
//Set Image Func
// 0xE9, 1, 0x00,
// Set Brightness to Max
ILI9341_WRITE_BRIGHTNESS, 1, 0xFF,
// Adjust Control
ILI9341_PUMP_RATIO_CONTROL, 4, 0xA9, 0x51, 0x2C, 0x82,
//Exit Sleep
ILI9341_SLEEP_OUT, 0x00,
// display on
ILI9341_DISPLAY_ON, 0,
0 // sentinel
};
#define LCD_INIT ST7796S_init_seq
#endif
void lcd_init(void) {
spi_init();
LCD_RESET_ASSERT;
chThdSleepMilliseconds(10);
LCD_RESET_NEGATE;
const uint8_t *p;
for (p = LCD_INIT; *p; ) {
ili9341_send_command(p[0], p[1], &p[2]);
p += 2 + p[1];
chThdSleepMilliseconds(2);
}
lcd_clear_screen();
}
static void ili9341_setWindow(int x, int y, int w, int h, uint16_t cmd) {
// Any LCD exchange start from this
dmaChannelWaitCompletionRxTx();
//uint8_t xx[4] = { x >> 8, x, (x+w-1) >> 8, (x+w-1) };
//uint8_t yy[4] = { y >> 8, y, (y+h-1) >> 8, (y+h-1) };
uint32_t xx = __REV16(x | ((x + w - 1) << 16));
uint32_t yy = __REV16(y | ((y + h - 1) << 16));
ili9341_send_command(ILI9341_COLUMN_ADDRESS_SET, 4, (uint8_t *)&xx);
ili9341_send_command(ILI9341_PAGE_ADDRESS_SET, 4, (uint8_t *)&yy);
ili9341_send_command(cmd, 0, NULL);
}
#ifndef __USE_DISPLAY_DMA__
void lcd_fill(int x, int y, int w, int h) {
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_WRITE);
uint32_t len = w * h;
do {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI))
;
#if LCD_PIXEL_SIZE == 2
SPI_WRITE_16BIT(LCD_SPI, background_color);
#else
SPI_WRITE_8BIT(LCD_SPI, background_color);
#endif
}while(--len);
#ifdef __REMOTE_DESKTOP__
if (sweep_mode & SWEEP_REMOTE) {
remote_region_t rd = {"fill\r\n", x, y, w, h};
send_region(&rd, (uint8_t *)&background_color, sizeof(pixel_t));
}
#endif
}
void lcd_bulk(int x, int y, int w, int h) {
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_WRITE);
spi_TxBuffer((uint8_t *)spi_buffer, w * h * sizeof(pixel_t));
#ifdef __REMOTE_DESKTOP__
if (sweep_mode & SWEEP_REMOTE) {
remote_region_t rd = {"bulk\r\n", x, y, w, h};
send_region(&rd, (uint8_t *)spi_buffer, w * h * sizeof(pixel_t));
}
#endif
}
#else
//
// Use DMA for send data
//
#define LCD_DMA_MODE (LCD_PIXEL_SIZE == 2 ? STM32_DMA_CR_HWORD : STM32_DMA_CR_BYTE)
// Fill region by some color
void lcd_fill(int x, int y, int w, int h) {
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_WRITE);
dmaChannelSetMemory(LCD_DMA_TX, &background_color);
uint32_t len = w * h, delta;
while(len) {
delta = len > 0xFFFF ? 0xFFFF : len; // DMA can send only 65535 data in one run
dmaChannelSetTransactionSize(LCD_DMA_TX, delta);
dmaChannelSetMode(LCD_DMA_TX, txdmamode | LCD_DMA_MODE | STM32_DMA_CR_EN);
dmaChannelWaitCompletion(LCD_DMA_TX);
len-=delta;
}
#ifdef __REMOTE_DESKTOP__
if (sweep_mode & SWEEP_REMOTE) {
remote_region_t rd = {"fill\r\n", x, y, w, h};
send_region(&rd, (uint8_t *)&background_color, sizeof(pixel_t));
}
#endif
}
static void ili9341_DMA_bulk(int x, int y, int w, int h, pixel_t *buffer) {
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_WRITE);
dmaChannelSetMemory(LCD_DMA_TX, buffer);
dmaChannelSetTransactionSize(LCD_DMA_TX, w * h);
dmaChannelSetMode(LCD_DMA_TX, txdmamode | LCD_DMA_MODE | STM32_DMA_CR_MINC | STM32_DMA_CR_EN);
#ifdef __REMOTE_DESKTOP__
if (sweep_mode & SWEEP_REMOTE) {
remote_region_t rd = {"bulk\r\n", x, y, w, h};
send_region(&rd, (uint8_t *)buffer, w * h * sizeof(pixel_t));
}
#endif
}
// Copy spi_buffer to region, wait completion after
void lcd_bulk(int x, int y, int w, int h) {
ili9341_DMA_bulk(x, y, w, h, spi_buffer); // Send data
dmaChannelWaitCompletion(LCD_DMA_TX); // Wait
}
// Used only in double buffer mode
#ifndef lcd_get_cell_buffer
#define LCD_BUFFER_1 0x01
#define LCD_DMA_RUN 0x02
static uint8_t LCD_dma_status = 0;
// Return free buffer for render
pixel_t *lcd_get_cell_buffer(void) {
return &spi_buffer[(LCD_dma_status&LCD_BUFFER_1) ? SPI_BUFFER_SIZE/2 : 0];
}
#endif
// Wait completion before next data send
#ifndef lcd_bulk_finish
void lcd_bulk_finish(void) {
dmaChannelWaitCompletion(LCD_DMA_TX); // Wait DMA
//while (SPI_IN_TX_RX(LCD_SPI)); // Wait tx
}
#endif
// Copy part of spi_buffer to region, no wait completion after if buffer count !=1
#ifndef lcd_bulk_continue
void lcd_bulk_continue(int x, int y, int w, int h) {
lcd_bulk_finish(); // Wait DMA
ili9341_DMA_bulk(x, y, w, h, lcd_get_cell_buffer()); // Send new cell data
LCD_dma_status^=LCD_BUFFER_1; // Switch buffer
}
#endif
#endif
#ifdef LCD_DRIVER_ILI9341
// ILI9341 send data in RGB888 format, need parse it
// Copy ILI9341 screen data to buffer
void lcd_read_memory(int x, int y, int w, int h, uint16_t *out) {
uint16_t len = w * h;
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_READ);
// Skip data from rx buffer
spi_DropRx();
// Set read speed (if need different)
#ifdef LCD_SPI_RX_SPEED
SPI_BR_SET(LCD_SPI, LCD_SPI_RX_SPEED);
#endif
// require 8bit dummy clock
spi_RxByte();
// receive pixel data to buffer
#ifndef __USE_DISPLAY_DMA_RX__
spi_RxBuffer((uint8_t *)out, len * LCD_RX_PIXEL_SIZE);
// Parse received data to RGB565 format
uint8_t *rgbbuf = (uint8_t *)out;
do {
uint8_t r, g, b;
// read data is always 18bit
r = rgbbuf[0];
g = rgbbuf[1];
b = rgbbuf[2];
*out++ = RGB565(r, g, b);
rgbbuf += LCD_RX_PIXEL_SIZE;
}while(--len);
#else
// Set data size for DMA read
len*= LCD_RX_PIXEL_SIZE;
// Start DMA read, and not wait completion
spi_DMARxBuffer((uint8_t *)out, len, false);
// Parse received data to RGB565 format while data receive by DMA
uint8_t *rgbbuf = (uint8_t *)out;
do {
uint16_t left = dmaChannelGetTransactionSize(LCD_DMA_RX)+LCD_RX_PIXEL_SIZE; // Get DMA data left
if (left > len) continue; // Next pixel RGB data not ready
do { // Process completed by DMA data
uint8_t r = rgbbuf[0]; // read data is always 18bit in RGB888 format
uint8_t g = rgbbuf[1];
uint8_t b = rgbbuf[2];
*out++ = RGB565(r, g, b);
rgbbuf+= LCD_RX_PIXEL_SIZE;
len -= LCD_RX_PIXEL_SIZE;
} while (left < len);
} while(len);
dmaChannelWaitCompletionRxTx(); // Wait DMA completion and stop it
#endif
// restore speed if need
#ifdef LCD_SPI_RX_SPEED
SPI_BR_SET(LCD_SPI, LCD_SPI_SPEED);
#endif
LCD_CS_HIGH;
}
#endif
#ifdef LCD_DRIVER_ST7796S
// ST7796S send data in RGB565 format, not need parse it
// Copy ST7796S screen data to buffer
void lcd_read_memory(int x, int y, int w, int h, uint16_t *out) {
uint16_t len = w * h;
ili9341_setWindow(x, y, w, h, ILI9341_MEMORY_READ);
// Skip data from rx buffer
spi_DropRx();
// Set read speed (if need different)
#ifdef LCD_SPI_RX_SPEED
SPI_BR_SET(LCD_SPI, LCD_SPI_RX_SPEED);
#endif
// require 8bit dummy clock
spi_RxByte();
// receive pixel data to buffer
#ifndef __USE_DISPLAY_DMA_RX__
spi_RxBuffer((uint8_t *)out, len * 2);
#else
spi_DMARxBuffer((uint8_t *)out, len * 2, true);
#endif
// restore speed if need
#ifdef LCD_SPI_RX_SPEED
SPI_BR_SET(LCD_SPI, LCD_SPI_SPEED);
#endif
LCD_CS_HIGH;
}
#endif
#if 0
static void lcd_pixel(int x, int y, uint16_t color) {
ili9341_setWindow(x0, y0, 1, 1, ILI9341_MEMORY_WRITE);
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_16BIT(LCD_SPI, color);
}
#endif
void lcd_line(int x0, int y0, int x1, int y1) {
// Modified Bresenham's line algorithm
if (x1 < x0) { SWAP(int, x0, x1); SWAP(int, y0, y1); } // Need draw from left to right
int dx =-(x1 - x0), sx = 1;
int dy = (y1 - y0), sy = 1; if (dy < 0) {dy = -dy; sy = -1;}
int err = -((dx + dy) < 0 ? dx : dy) / 2;
while (1) {
ili9341_setWindow(x0, y0, LCD_WIDTH-x0, 1, ILI9341_MEMORY_WRITE); // prepare send Horizontal line
while (1) {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_16BIT(LCD_SPI, foreground_color); // Send color
if (x0 == x1 && y0 == y1)
return;
int e2 = err;
if (e2 > dx) { err-= dy; x0+= sx; }
if (e2 < dy) { err-= dx; y0+= sy; break;} // Y coordinate change, next horizontal line
}
}
}
void lcd_clear_screen(void) {
lcd_fill(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
void lcd_set_foreground(uint16_t fg_idx) {
foreground_color = GET_PALTETTE_COLOR(fg_idx);
}
void lcd_set_background(uint16_t bg_idx) {
background_color = GET_PALTETTE_COLOR(bg_idx);
}
void lcd_set_colors(uint16_t fg_idx, uint16_t bg_idx) {
foreground_color = GET_PALTETTE_COLOR(fg_idx);
background_color = GET_PALTETTE_COLOR(bg_idx);
}
void lcd_set_flip(bool flip) {
dmaChannelWaitCompletionRxTx();
uint8_t memAcc = flip ? DISPLAY_ROTATION_180 : DISPLAY_ROTATION_0;
lcd_send_command(ILI9341_MEMORY_ACCESS_CONTROL, 1, &memAcc);
}
void ili9341_set_rotation(uint8_t r) {
// static const uint8_t rotation_const[]={DISPLAY_ROTATION_0, DISPLAY_ROTATION_90,
// DISPLAY_ROTATION_180, DISPLAY_ROTATION_270};
ili9341_send_command(ILI9341_MEMORY_ACCESS_CONTROL, 1, &r);
}
void lcd_blitBitmap(uint16_t x, uint16_t y, uint16_t width, uint16_t height, const uint8_t *b) {
#if 1 // Use this for remote desctop (in this case bulk operation send to remote)
pixel_t *buf = spi_buffer;
uint8_t bits = 0;
for (uint32_t c = 0; c < height; c++) {
for (uint32_t r = 0; r < width; r++) {
if ((r&7) == 0) bits = *b++;
*buf++ = (0x80 & bits) ? foreground_color : background_color;
bits <<= 1;
}
}
lcd_bulk(x, y, width, height);
#else
uint8_t bits = 0;
ili9341_setWindow(x, y, width, height, ILI9341_MEMORY_WRITE);
for (uint32_t c = 0; c < height; c++) {
for (uint32_t r = 0; r < width; r++) {
if ((r&7) == 0) bits = *b++;
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_16BIT(LCD_SPI, (0x80 & bits) ? foreground_color : background_color);
bits <<= 1;
}
}
#endif
}
void lcd_drawchar(uint8_t ch, int x, int y) {
lcd_blitBitmap(x, y, FONT_GET_WIDTH(ch), FONT_GET_HEIGHT, FONT_GET_DATA(ch));
}
#ifndef lcd_drawstring
void lcd_drawstring(int16_t x, int16_t y, const char *str)
{
int x_pos = x;
while (*str) {
uint8_t ch = *str++;
if (ch == '\n') {x = x_pos; y+=FONT_STR_HEIGHT; continue;}
const uint8_t *char_buf = FONT_GET_DATA(ch);
uint16_t w = FONT_GET_WIDTH(ch);
lcd_blitBitmap(x, y, w, FONT_GET_HEIGHT, char_buf);
x += w;
}
}
#endif
typedef struct {
const void *vmt;
int16_t start_x;
int16_t start_y;
int16_t x;
int16_t y;
uint16_t state;
} lcdPrintStream;
static void put_normal(lcdPrintStream *ps, uint8_t ch) {
if (ch == '\n') {ps->x = ps->start_x; ps->y+=FONT_STR_HEIGHT; return;}
uint16_t w = FONT_GET_WIDTH(ch);
#if _USE_FONT_ < 3
lcd_blitBitmap(ps->x, ps->y, w, FONT_GET_HEIGHT, FONT_GET_DATA(ch));
#else
lcd_blitBitmap(ps->x, ps->y, w < 9 ? 9 : w, FONT_GET_HEIGHT, FONT_GET_DATA(ch));
#endif
ps->x+= w;
}
#if _USE_FONT_ != _USE_SMALL_FONT_
typedef void (*font_put_t)(lcdPrintStream *ps, uint8_t ch);
static font_put_t put_char = put_normal;
static void put_small(lcdPrintStream *ps, uint8_t ch) {
if (ch == '\n') {ps->x = ps->start_x; ps->y+=sFONT_STR_HEIGHT; return;}
uint16_t w = sFONT_GET_WIDTH(ch);
#if _USE_SMALL_FONT_ < 3
lcd_blitBitmap(ps->x, ps->y, w, sFONT_GET_HEIGHT, sFONT_GET_DATA(ch));
#else
lcd_blitBitmap(ps->x, ps->y, w < 9 ? 9 : w, sFONT_GET_HEIGHT, sFONT_GET_DATA(ch));
#endif
ps->x+= w;
}
void lcd_set_font(int type) {put_char = type == FONT_SMALL ? put_small : put_normal;}
#else
#define put_char put_normal
#endif
static msg_t lcd_put(void *ip, uint8_t ch) {
lcdPrintStream *ps = ip;
if (ps->state) {
if (ps->state == R_BGCOLOR[0]) lcd_set_background(ch);
else if (ps->state == R_FGCOLOR[0]) lcd_set_foreground(ch);
ps->state = 0;
return MSG_OK;
} else if (ch < 0x09) {
ps->state = ch;
return MSG_OK;
}
put_char(ps, ch);
return MSG_OK;
}
// Simple print in buffer function
int lcd_printf(int16_t x, int16_t y, const char *fmt, ...) {
// Init small lcd print stream
struct lcd_printStreamVMT {
_base_sequential_stream_methods
} lcd_vmt = {NULL, NULL, lcd_put, NULL};
lcdPrintStream ps = {&lcd_vmt, x, y, x, y, 0};
// Performing the print operation using the common code.
va_list ap;
va_start(ap, fmt);
int retval = chvprintf((BaseSequentialStream *)(void *)&ps, fmt, ap);
va_end(ap);
// Return number of bytes that would have been written.
return retval;
}
int lcd_printfV(int16_t x, int16_t y, const char *fmt, ...) {
// Init small lcd print stream
struct lcd_printStreamVMT {
_base_sequential_stream_methods
} lcd_vmt = {NULL, NULL, lcd_put, NULL};
lcdPrintStream ps = {&lcd_vmt, x, y, x, y, 0};
lcd_set_foreground(LCD_FG_COLOR);
lcd_set_background(LCD_BG_COLOR);
ili9341_set_rotation(DISPLAY_ROTATION_270);
// Performing the print operation using the common code.
va_list ap;
va_start(ap, fmt);
int retval = chvprintf((BaseSequentialStream *)(void *)&ps, fmt, ap);
va_end(ap);
ili9341_set_rotation(DISPLAY_ROTATION_0);
// Return number of bytes that would have been written.
return retval;
}
void lcd_blitBitmapScale(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t size, const uint8_t *b) {
ili9341_setWindow(x, y, w * size, h * size, ILI9341_MEMORY_WRITE);
for (int c = 0; c < h; c++) {
const uint8_t *ptr = b; uint8_t bits = 0;
for (int i = 0; i < size; i++) {
ptr = b;
for (int r = 0; r < w; r++, bits <<= 1) {
if ((r&7) == 0) bits = *ptr++;
for (int j = 0; j < size; j++) {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_16BIT(LCD_SPI, (0x80 & bits) ? foreground_color : background_color);
}
}
}
b = ptr;
}
}
int lcd_drawchar_size(uint8_t ch, int x, int y, uint8_t size) {
const uint8_t *char_buf = FONT_GET_DATA(ch);
uint16_t w = FONT_GET_WIDTH(ch);