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ili9341.c
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ili9341.c
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/*
* Copyright (c) 2019-2020, 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
// Custom display definition
#ifdef LCD_DRIVER_ILI9341
// 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 (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
//*****************************************************
// SPI transmit byte to SPI (no wait complete transmit)
inline void spi_TxByte(uint8_t data) {
SPI_WRITE_8BIT(LCD_SPI, data);
}
// Transmit word to SPI bus (if SPI in 8 bit mode LSB send first!!!!!)
inline void spi_TxWord(uint16_t data) {
SPI_WRITE_16BIT(LCD_SPI, data);
}
// Transmit buffer to SPI bus (len should be > 0)
void spi_TxBuffer(const uint8_t *buffer, uint16_t len) {
do {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI));
SPI_WRITE_8BIT(LCD_SPI, *buffer++);
}while(--len);
}
// Receive byte from SPI bus
static uint8_t spi_RxByte(void) {
// Start RX clock (by sending data)
SPI_WRITE_8BIT(LCD_SPI, 0xFF);
while (SPI_RX_IS_EMPTY(LCD_SPI)||SPI_IS_BUSY(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
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);
}
//*****************************************************
// SPI DMA settings and data
//*****************************************************
#ifdef __USE_DISPLAY_DMA__
static const stm32_dma_stream_t *dmatx =
STM32_DMA_STREAM(STM32_SPI_SPI1_TX_DMA_STREAM);
static const uint32_t txdmamode =
STM32_DMA_CR_CHSEL(SPI1_TX_DMA_CHANNEL) // Select SPI1 Tx DMA
| STM32_DMA_CR_PL(STM32_SPI_SPI1_DMA_PRIORITY) // Set priority
| STM32_DMA_CR_DIR_M2P; // Memory to Spi
// Not handle interrupt
#if 0
static void spi_lld_serve_tx_interrupt(SPIDriver *spip, uint32_t flags)
{
(void)spip;
(void)flags;
}
#endif
static const stm32_dma_stream_t *dmarx = STM32_DMA_STREAM(STM32_SPI_SPI1_RX_DMA_STREAM);
static const uint32_t rxdmamode =
STM32_DMA_CR_CHSEL(SPI1_RX_DMA_CHANNEL) // Select SPI1 Rx DMA
| STM32_DMA_CR_PL(STM32_SPI_SPI1_DMA_PRIORITY) // Set priority
| STM32_DMA_CR_DIR_P2M; // SPI to Memory
// Not handle interrupt
#if 0
static void spi_lld_serve_rx_interrupt(SPIDriver *spip, uint32_t flags)
{
(void)spip;
(void)flags;
}
#endif
// Send prepared DMA data, and wait completion
static void dmaStreamFlush(uint32_t len)
{
while (len) {
// DMA data transfer limited by 65535
uint16_t tx_size = len > 65535 ? 65535 : len;
dmaStreamSetTransactionSize(dmatx, tx_size);
dmaStreamEnable(dmatx);
len -= tx_size;
dmaWaitCompletion(dmatx);
}
}
// SPI receive byte buffer use DMA
void spi_DMATxBuffer(uint8_t *buffer, uint16_t len) {
dmaStreamSetMemory0(dmatx, buffer);
dmaStreamSetMode(dmatx, txdmamode | STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE | STM32_DMA_CR_MINC);
dmaStreamFlush(len);
}
// Wait DMA Rx completion
static void dmaWaitCompletionRxTx(void){
dmaWaitCompletion(dmatx);
dmaWaitCompletion(dmarx);
}
// SPI transmit byte buffer use DMA
static void spi_DMARxBuffer(uint8_t *buffer, uint16_t len, bool wait) {
uint8_t dummy_tx = 0xFF;
// Init Rx DMA buffer, size, mode (spi and mem data size is 8 bit)
dmaStreamSetMemory0(dmarx, buffer);
dmaStreamSetTransactionSize(dmarx, len);
dmaStreamSetMode(dmarx, rxdmamode | STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE | STM32_DMA_CR_MINC);
// Init dummy Tx DMA (for rx clock), size, mode (spi and mem data size is 8 bit)
dmaStreamSetMemory0(dmatx, &dummy_tx);
dmaStreamSetTransactionSize(dmatx, len);
dmaStreamSetMode(dmatx, txdmamode | STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE);
// Skip SPI rx buffer
spi_DropRx();
// Start DMA exchange
dmaStreamEnable(dmarx);
dmaStreamEnable(dmatx);
if (wait)
dmaWaitCompletionRxTx();
}
#else
// Replace DMA function vs no DMA
#define dmaWaitCompletionRxTx() {}
#define spi_DMATxBuffer(buffer, len) spi_TxBuffer(buffer, len)
#define spi_DMARxBuffer(buffer, len, wait) 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__
// Tx DMA init
dmaStreamAllocate(dmatx, STM32_SPI_SPI1_IRQ_PRIORITY, NULL, NULL);
dmaStreamSetPeripheral(dmatx, &LCD_SPI->DR);
LCD_SPI->CR2|= SPI_CR2_TXDMAEN; // Tx DMA enable
#ifdef __USE_DISPLAY_DMA_RX__
// Rx DMA init
dmaStreamAllocate(dmarx, STM32_SPI_SPI1_IRQ_PRIORITY, NULL, NULL);
dmaStreamSetPeripheral(dmarx, &LCD_SPI->DR);
// Enable DMA on SPI
LCD_SPI->CR2|= SPI_CR2_RXDMAEN; // Rx DMA enable
#endif
#endif
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
#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)
// Disable inline for this function
static void ili9341_send_command(uint8_t cmd, uint8_t len, const uint8_t *data)
{
// Uncomment on low speed SPI (possible get here before previous tx complete)
// while (SPI_IN_TX_RX(LCD_SPI))
// ;
LCD_CS_LOW;
LCD_DC_CMD;
SPI_WRITE_8BIT(LCD_SPI, cmd);
// Need wait transfer complete and set data bit
while (SPI_IN_TX_RX(LCD_SPI))
;
// Send command data (if need)
LCD_DC_DATA;
while (len-- > 0) {
while (SPI_TX_IS_NOT_EMPTY(LCD_SPI))
;
SPI_WRITE_8BIT(LCD_SPI, *data++);
}
// 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 = 0;
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;
}
#ifdef LCD_DRIVER_ILI9341
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
#ifdef __LCD_BRIGHTNESS__
#if HAL_USE_DAC == TRUE
#error "Need disable HAL_USE_DAC in halconf.h for use __LCD_BRIGHTNESS__"
#endif
static void lcd_initBrightness(void){
rccEnableDAC1(false); // Enable DAC1
DAC->CR|= DAC_CR_EN2; // Use DAC1 CH2
}
// Brightness control range 0 - 100
void lcd_setBrightness(uint16_t b){
uint32_t v = 700 + b*(4000-700)/100;
DAC->DHR12R2 = v;
}
#else
#define lcd_initBrightness()
#endif
void lcd_init(void)
{
spi_init();
// Init Brightness if LCD support
lcd_initBrightness();
LCD_DC_DATA;
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){
// Any LCD exchange start from this
dmaWaitCompletionRxTx();
//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);
}
#ifndef __USE_DISPLAY_DMA__
void lcd_fill(int x, int y, int w, int h)
{
ili9341_setWindow(x, y, w, h);
ili9341_send_command(ILI9341_MEMORY_WRITE, 0, NULL);
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_send_command(ILI9341_MEMORY_WRITE, 0, NULL);
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 *)buffer, w * h * sizeof(pixel_t));
}
#endif
}
#else
//
// Use DMA for send data
//
#define LCD_DMA_MODE (LCD_PIXEL_SIZE == 2 ? (STM32_DMA_CR_PSIZE_HWORD|STM32_DMA_CR_MSIZE_HWORD) : (STM32_DMA_CR_PSIZE_BYTE|STM32_DMA_CR_MSIZE_BYTE))
// Fill region by some color
void lcd_fill(int x, int y, int w, int h)
{
ili9341_setWindow(x, y, w, h);
ili9341_send_command(ILI9341_MEMORY_WRITE, 0, NULL);
dmaStreamSetMemory0(dmatx, &background_color);
dmaStreamSetMode(dmatx, txdmamode | LCD_DMA_MODE);
dmaStreamFlush(w * h);
#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_send_command(ILI9341_MEMORY_WRITE, 0, NULL);
dmaStreamSetMemory0(dmatx, buffer);
dmaStreamSetMode(dmatx, txdmamode | LCD_DMA_MODE | STM32_DMA_CR_MINC);
dmaStreamSetTransactionSize(dmatx, w * h);
dmaStreamEnable(dmatx);
#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
dmaWaitCompletion(dmatx); // 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){
dmaWaitCompletion(dmatx); // 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_send_command(ILI9341_MEMORY_READ, 0, NULL);
// 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 = dmaStreamGetTransactionSize(dmarx)+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);
dmaWaitCompletionRxTx(); // 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_send_command(ILI9341_MEMORY_READ, 0, NULL);
// 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
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 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)
{
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);
}
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;
}
void lcd_drawstringV(const char *str, int x, int y)
{
ili9341_set_rotation(DISPLAY_ROTATION_270);
lcd_drawstring(LCD_HEIGHT-y, x, str);
ili9341_set_rotation(DISPLAY_ROTATION_0);
}
int lcd_drawchar_size(uint8_t ch, int x, int y, uint8_t size)
{
pixel_t *buf = spi_buffer;
const uint8_t *char_buf = FONT_GET_DATA(ch);
uint16_t w = FONT_GET_WIDTH(ch);
for (uint32_t c = 0; c < FONT_GET_HEIGHT; c++, char_buf++) {
for (uint32_t i = 0; i < size; i++) {
uint8_t bits = *char_buf;
for (uint32_t r = 0; r < w; r++, bits <<= 1)
for (uint32_t j = 0; j < size; j++)
*buf++ = (0x80 & bits) ? foreground_color : background_color;
}
}
lcd_bulk(x, y, w * size, FONT_GET_HEIGHT * size);
return w*size;
}
void lcd_drawfont(uint8_t ch, int x, int y)
{
lcd_blitBitmap(x, y, NUM_FONT_GET_WIDTH, NUM_FONT_GET_HEIGHT, NUM_FONT_GET_DATA(ch));
}
void lcd_drawstring_size(const char *str, int x, int y, uint8_t size)
{
while (*str)
x += lcd_drawchar_size(*str++, x, y, size);
}
#if 0
static void lcd_pixel(int x, int y, uint16_t color)
{
uint32_t xx = __REV16(x|((x)<<16));
uint32_t yy = __REV16(y|((y)<<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(ILI9341_MEMORY_WRITE, 2, &color);
}
#endif
void lcd_line(int x0, int y0, int x1, int y1)
{
#if 0
// modifed Bresenham's line algorithm, see https://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm
int dx = x1 - x0, sx = 1; if (dx < 0) {dx = -dx; sx = -1;}
int dy = y1 - y0, sy = 1; if (dy < 0) {dy = -dy; sy = -1;}
int err = (dx > dy ? dx : -dy) / 2;
while (1) {
ili9341_pixel(x0, y0, RGB565(255,255,255));
if (x0 == x1 && y0 == y1)
break;
int e2 = err;
if (e2 > -dx) { err -= dy; x0 += sx; }
if (e2 < dy) { err += dx; y0 += sy; }
}
#endif
SWAP(uint16_t, foreground_color, background_color);
if (x0 > x1) {
SWAP(int, x0, x1);
SWAP(int, y0, y1);
}
while (x0 <= x1) {
int dx = x1 - x0 + 1;
int dy = y1 - y0;
if (dy >= 0) {
dy++;
if (dy > dx) {
dy /= dx; dx = 1;
} else {
dx /= dy; dy = 1;
}
} else {
dy--;
if (-dy > dx) {
dy /= dx; dx = 1;
} else {
dx /= -dy;dy = -1;
}
}
if (dy > 0)
lcd_fill(x0, y0, dx, dy);
else
lcd_fill(x0, y0+dy, dx, -dy);
x0 += dx;
y0 += dy;
}
SWAP(uint16_t, foreground_color, background_color);
}
#if 0
static const uint16_t colormap[] = {
RGBHEX(0x00ff00), RGBHEX(0x0000ff), RGBHEX(0xff0000),
RGBHEX(0x00ffff), RGBHEX(0xff00ff), RGBHEX(0xffff00)
};
void ili9341_test(int mode)
{
int x, y;
int i;
switch (mode) {
default:
#if 1
lcd_fill(0, 0, LCD_WIDTH, LCD_HEIGHT, 0);
for (y = 0; y < LCD_HEIGHT; y++) {
lcd_fill(0, y, LCD_WIDTH, 1, RGB(LCD_HEIGHT-y, y, (y + 120) % 256));
}
break;
case 1:
lcd_fill(0, 0, LCD_WIDTH, LCD_HEIGHT, 0);
for (y = 0; y < LCD_HEIGHT; y++) {
for (x = 0; x < LCD_WIDTH; x++) {
ili9341_pixel(x, y, (y<<8)|x);
}
}
break;
case 2:
//ili9341_send_command(0x55, 0xff00);
ili9341_pixel(64, 64, 0xaa55);
break;
#endif
#if 1
case 3:
for (i = 0; i < 10; i++)
lcd_drawfont(i, i*20, 120);
break;
#endif
#if 0
case 4:
draw_grid(10, 8, 29, 29, 15, 0, 0xffff, 0);
break;
#endif
case 4: