ESP32S3+HX8347+3线SPI运行LVGL例程

一、clone lv_port_esp32到本地

git clone https://github.com/lvgl/lv_port_esp32.git

 二、增加hx8347.c、hx8347.h

        components\lvgl_esp32_drivers\lvgl_tft下新增2个文件：hx8347.c、hx8347.h。因为lv_port_esp32中没有hx8347的驱动，需要自己写。这两个hx8347.c、hx8347.h修改HX8357的配置文件改的，有很多冗余信息，不影响使用。

hx8347.h

/*** @file HX8347.h** Roughly based on the Adafruit_HX8347_Library** This library should work with:* Adafruit 3.5" TFT 320x480 + Touchscreen Breakout*    http://www.adafruit.com/products/2050** Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers*    https://www.adafruit.com/product/3651**/#ifndef HX8347_H
#define HX8347_H#ifdef __cplusplus
extern "C" {
#endif/**********************      INCLUDES*********************/
#include <stdbool.h>
#include <stdint.h>#ifdef LV_LVGL_H_INCLUDE_SIMPLE
#include "lvgl.h"
#else
#include "lvgl/lvgl.h"
#endif
#include "../lvgl_helpers.h"/**********************      DEFINES*********************/
#define HX8347_DC   CONFIG_LV_DISP_PIN_DC
#define HX8347_RST  CONFIG_LV_DISP_PIN_RST
#define HX8347_BCKL CONFIG_LV_DISP_PIN_BCKL
#define HX8347_CS   6//CONFIG_LV_DISP_SPI_CS#define HX8347_ENABLE_BACKLIGHT_CONTROL CONFIG_LV_ENABLE_BACKLIGHT_CONTROL
#define HX8347_INVERT_COLORS            CONFIG_LV_INVERT_COLORS#if CONFIG_LV_BACKLIGHT_ACTIVE_LVL#define HX8347_BCKL_ACTIVE_LVL 1
#else#define HX8347_BCKL_ACTIVE_LVL 0
#endif/******************** HX8347B/D REGS
*********************/
#define HX8347D                    0xD  ///< Our internal const for D type
#define HX8347B                    0xB  ///< Our internal const for B type#define HX8347_TFTWIDTH            320  ///< 320 pixels wide
#define HX8347_TFTHEIGHT           240  ///< 480 pixels tall#define HX8347_NOP                0x00  ///< No op
#define HX8347_SWRESET            0x01  ///< software reset
#define HX8347_RDDID              0x04  ///< Read ID
#define HX8347_RDDST              0x09  ///< (unknown)#define HX8347_RDPOWMODE          0x0A  ///< Read power mode Read power mode
#define HX8347_RDMADCTL           0x0B  ///< Read MADCTL
#define HX8347_RDCOLMOD           0x0C  ///< Column entry mode
#define HX8347_RDDIM              0x0D  ///< Read display image mode
#define HX8347_RDDSDR             0x0F  ///< Read dosplay signal mode#define HX8347_SLPIN              0x10  ///< Enter sleep mode
#define HX8347_SLPOUT             0x11  ///< Exit sleep mode
#define HX8347B_PTLON             0x12  ///< Partial mode on
#define HX8347B_NORON             0x13  ///< Normal mode#define HX8347_INVOFF             0x20  ///< Turn off invert
#define HX8347_INVON              0x21  ///< Turn on invert
#define HX8347_DISPOFF            0x28  ///< Display on
#define HX8347_DISPON             0x29  ///< Display off#define HX8347_CASET              0x2A  ///< Column addr set
#define HX8347_PASET              0x2B  ///< Page addr set
#define HX8347_RAMWR              0x2C  ///< Write VRAM
#define HX8347_RAMRD              0x2E  ///< Read VRAm#define HX8347B_PTLAR             0x30  ///< (unknown)
#define HX8347_TEON               0x35  ///< Tear enable on
#define HX8347_TEARLINE           0x44  ///< (unknown)
#define HX8347_MADCTL             0x16  ///< Memory access control
#define HX8347_COLMOD             0x3A  ///< Color mode#define HX8347_SETOSC             0xB0  ///< Set oscillator
#define HX8347_SETPWR1            0xB1  ///< Set power control
#define HX8347B_SETDISPLAY        0xB2  ///< Set display mode
#define HX8347_SETRGB             0xB3  ///< Set RGB interface
#define HX8347D_SETCOM            0xB6  ///< Set VCOM voltage#define HX8347B_SETDISPMODE       0xB4  ///< Set display mode
#define HX8347D_SETCYC            0xB4  ///< Set display cycle reg
#define HX8347B_SETOTP            0xB7  ///< Set OTP memory
#define HX8347D_SETC              0xB9  ///< Enable extension command#define HX8347B_SET_PANEL_DRIVING 0xC0  ///< Set panel drive mode
#define HX8347D_SETSTBA           0xC0  ///< Set source option
#define HX8347B_SETDGC            0xC1  ///< Set DGC settings
#define HX8347B_SETID             0xC3  ///< Set ID
#define HX8347B_SETDDB            0xC4  ///< Set DDB
#define HX8347B_SETDISPLAYFRAME   0xC5  ///< Set display frame
#define HX8347B_GAMMASET          0xC8  ///< Set Gamma correction
#define HX8347B_SETCABC           0xC9  ///< Set CABC
#define HX8347_SETPANEL           0xCC  ///< Set Panel#define HX8347B_SETPOWER          0xD0  ///< Set power control
#define HX8347B_SETVCOM           0xD1  ///< Set VCOM
#define HX8347B_SETPWRNORMAL      0xD2  ///< Set power normal#define HX8347B_RDID1             0xDA  ///< Read ID #1
#define HX8347B_RDID2             0xDB  ///< Read ID #2
#define HX8347B_RDID3             0xDC  ///< Read ID #3
#define HX8347B_RDID4             0xDD  ///< Read ID #4#define HX8347D_SETGAMMA          0xE0  ///< Set Gamma#define HX8347B_SETGAMMA          0xC8 ///< Set Gamma
#define HX8347B_SETPANELRELATED   0xE9 ///< Set panel related/***********************      TYPEDEFS**********************//*********************** GLOBAL PROTOTYPES**********************/void hx8347_init(void);
void hx8347_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map);
void hx8347_enable_backlight(bool backlight);
void hx8347_set_rotation(uint8_t r);/***********************      MACROS**********************/#ifdef __cplusplus
} /* extern "C" */
#endif#endif /*HX8347_H*/

hx8347.c

/*** @file HX8347.c** Roughly based on the Adafruit_HX8347_Library** This library should work with:* Adafruit 3.5" TFT 320x480 + Touchscreen Breakout*    http://www.adafruit.com/products/2050** Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers*    https://www.adafruit.com/product/3651**//**********************      INCLUDES*********************/
#include "hx8347.h"
#include "disp_spi.h"
#include "driver/gpio.h"
#include "rom/gpio.h"
#include <esp_log.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"/**********************      DEFINES*********************/
#define TAG        "HX8347"#define MADCTL_MY  0x80 ///< Bottom to top
#define MADCTL_MX  0x40 ///< Right to left
#define MADCTL_MV  0x20 ///< Reverse Mode
#define MADCTL_ML  0x10 ///< LCD refresh Bottom to top
#define MADCTL_RGB 0x00 ///< Red-Green-Blue pixel order
#define MADCTL_BGR 0x08 ///< Blue-Green-Red pixel order
//#define MADCTL_MH  0x04 ///< LCD refresh right to left/***********************      TYPEDEFS**********************//*The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct. */
typedef struct {uint8_t cmd;uint8_t data[16];uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
} lcd_init_cmd_t;/***********************  STATIC PROTOTYPES**********************/
static void hx8347_send_cmd(uint8_t cmd);
static void hx8347_send_data(void * data, uint16_t length);
static void hx8347_send_color(void * data, uint16_t length);
static void hx8347_send_16bit(uint8_t d1,uint8_t d2);/***********************  INITIALIZATION ARRAYS**********************/
// Taken from the Adafruit driver
static const uint8_tinitb[] = {//Driving ability Setting0xEA,1,0x00, //PTBA[15:8]0xEB,1,0x20, //PTBA[7:0]0xEC,1,0x0C, //STBA[15:8]0xED,1,0xC4, //STBA[7:0]0xE8,1,0x40, //OPON[7:0]0xE9,1,0x38, //OPON1[7:0]0xF1,1,0x01, //OTPS1B0xF2,1,0x10, //GEN0x27,1,0xA3,//Gamma 2.2 Setting0x40,1,0x01, //0x41,1,0x00, //0x42,1,0x00, //0x43,1,0x10, //0x44,1,0x0E, //0x45,1,0x24, //0x46,1,0x04, //0x47,1,0x50, //0x48,1,0x02, //0x49,1,0x13, //0x4A,1,0x19, //0x4B,1,0x19, //0x4C,1,0x16, //0x50,1,0x1B, //0x51,1,0x31, //0x52,1,0x2F, //0x53,1,0x3F, //0x54,1,0x3F, //0x55,1,0x3E, //0x56,1,0x2F, //0x57,1,0x7B, //0x58,1,0x09, //0x59,1,0x06, //0x5A,1,0x06, //0x5B,1,0x0C, //0x5C,1,0x1D, //0x5D,1,0xCC, //// Window setting//#if (DISP_ORIENTATION == 0)//    0x04,1,0x00,//    0x05,1,0xEF,//    0x08,1,0x01,//    0x09,1,0x3F,//#else//    0x04,1,0x01,//    0x05,1,0x3F,//    0x08,1,0x00,//    0x09,1,0xEF,//#endif//Power Voltage Setting0x1B,1,0x1B, //VRH=4.65V0x1A,1,0x01, //BT (VGH~15V,VGL~-10V,DDVDH~5V)0x24,1,0x15, //VMH(VCOM High voltage ~3.2V)0x25,1,0x50, //VML(VCOM Low voltage -1.2V)0x23,1,0x88, //for Flicker adjust //can reload from OTP//Power on Setting0x18,1,0x36, // I/P_RADJ,N/P_RADJ, Normal mode 60Hz0x19,1,0x01, //OSC_EN='1', start Osc0x01,1,0x00, //DP_STB='0', out deep sleep0x1F,1,0x88,// GAS=1, VOMG=00, PON=0, DK=1, XDK=0, DVDH_TRI=0, STB=00xFF, 0x80 + 50/5,0x1F,1,0x80,// GAS=1, VOMG=00, PON=0, DK=0, XDK=0, DVDH_TRI=0, STB=00xFF, 0x80 + 50/5,0x1F,1,0x90,// GAS=1, VOMG=00, PON=1, DK=0, XDK=0, DVDH_TRI=0, STB=00xFF, 0x80 + 50/5,0x1F,1,0xD0,// GAS=1, VOMG=10, PON=1, DK=0, XDK=0, DDVDH_TRI=0, STB=00xFF, 0x80 + 50/5,//262k/65k color selection0x17,1,0x05, //default 0x06 262k color // 0x05 65k color//SET PANEL0x36,1,0x00, //SS_P, GS_P,REV_P,BGR_P//Display ON Setting0x28,1,0x38, //GON=1, DTE=1, D=10000xFF, 0x80 + 50/5,0x28,1,0x3C, //GON=1, DTE=1, D=11000x16,1,0x38, // MY=0, MX=1, MV=1, BGR=1// 0x16,1,0x80, // MY=1, MX=0, MV=0,竖屏时去掉注释//Set GRAM Area0x02,1,0x00,0x03,1,0x00, //Column Start0x04,1,0x00,0x05,1,0xEF, //Column End0x06,1,0x00,0x07,1,0x00, //Row Start0x08,1,0x01,0x09,1,0x3F, //Row End// 0x0a,1,0x00,// 0x0b,1,0xef,// 0x0c,1,0x00,// 0x0d,1,0x00,//  //************* Start Initial Sequence **********//// 	 0x2e,1,0x79,//  0xee,1,0x0c,//  //Driving ability Setting//  0xea,1,0x00,//  0xeb,1,0x20,//  0xec,1,0x08,//  0xed,1,0xc4,//  0xe8,1,0x40,//  0xe9,1,0x38,//  0xf1,1,0x01,//  0xf2,1,0x10,//  0x27,1,0xa3,//  //Gamma 2.2 Setting//  0x40,1,0x01,//  0x41,1,0x07,//  0x42,1,0x07,//  0x43,1,0x13,//  0x44,1,0x11,//  0x45,1,0x24,//  0x46,1,0x10,//  0x47,1,0x57,//  0x48,1,0x09,//  0x49,1,0x14,//  0x4a,1,0x19,//  0x4b,1,0x19,//  0x4c,1,0x16,//  0x50,1,0x1b,//  0x51,1,0x2e,//  0x52,1,0x2c,//  0x53,1,0x38,//  0x54,1,0x38,//  0x55,1,0x3e,//  0x56,1,0x2a,//  0x57,1,0x6f,//  0x58,1,0x09,//  0x59,1,0x06,//  0x5a,1,0x06,//  0x5b,1,0x0b,//  0x5c,1,0x16,//  0x5d,1,0xcc,//  //Power Voltage Setting//  0x1b,1,0x1b,//  0x1a,1,0x01,//  0x24,1,0x29,//  0x25,1,0x57,//  //****VCOM offset**/////  0x23,1,0x8a,//  //Power on Setting//  0x18,1,0x36,//  0x19,1,0x01,//  0x01,1,0x00,//  0x1f,1,0x88,//  0xFF, 0x80 + 50/5,//  0x1f,1,0x80,//  0xFF, 0x80 + 50/5,//  0x1f,1,0x90,//   0xFF, 0x80 + 50/5,//  0x1f,1,0xd0,//   0xFF, 0x80 + 50/5,//  //262k/65k color selection//  0x17,1,0x05,//  //SET PANEL//  0x36,1,0x00,//  //Display ON Setting//  0x28,1,0x38,//  0xFF, 0x80 + 50/5,//  0x28,1,0x3c,//    //设置2.8寸的GAMA参数//   0x46,1,0x94,//   0x47,1,0x41,//   0x48,1,0x00,//   0x49,1,0x33,//   0x4a,1,0x23,//   0x4b,1,0x45,//   0x4c,1,0x44,//   0x4d,1,0x77,//   0x4e,1,0x12,//   0x4f,1,0xcc,//   0x50,1,0x46,//   0x51,1,0x82,//   //320*240 peixl setting//   0x02,1,0x00,//   0x03,1,0x00,//   0x04,1,0x00,//   0x05,1,0xef,//   0x06,1,0x00,//   0x07,1,0x00,//   0x08,1,0x01,//   0x09,1,0x3f,//   //Display setting//   0x01,1,0x06,//   0x16,1,0xc8,//   0x23,1,0x95,//   0x24,1,0x95,//   0x25,1,0xFF,//   0x27,1,0x02,//   0x28,1,0x02,//   0x29,1,0x02,//   0x2a,1,0x02,//   0x2C,1,0x02,//   0x2d,1,0x02,//   0x3a,1,0x01,//   0x3b,1,0x01,//   0x3c,1,0xf0,//   0x3d,1,0x00,//   0xFF, 0x80 + 50/5,//   0x35,1,0x38,//   0x36,1,0x78,//   0x3E,1,0x3,//   0x40,1,0x0F,//   0x41,1,0xF0,//   //power supply setting//   0x19,1,0x49,//   0x93,1,0x0F,//   0xFF, 0x80 + 50/5,//   0x20,1,0x40,//   0x1D,1,0x07,//   0x1E,1,0x00,//   0x1F,1,0x03,//   //VCOM SETTING FOR 2.4' PANNNEL'//   0x44,1,0x42,//   0x45,1,0x11,//   0xFF, 0x80 + 50/5,//   0x1C,1,0x04,//   0xFF, 0x80 + 50/5,//   0x43,1,0x80,//   0xFF, 0x80 + 50/5,//   0x1B,1,0x08,//  0xFF, 0x80 + 50/5,//   // Display ON Setting//   0x90,1,0x7F,//   0x26,1,0x04,//   0xFF, 0x80 + 50/5,//   0x26,1,0x24,//   0x26,1,0x2C,//   0xFF, 0x80 + 50/5,//   0x26,1,0x3C,//   // Fixed the read data issue//   0x57,1,0x02,//   0x56,1,0x02,//   0x57,1,0x00,// //Driving ability Setting// 0xEa,1,0x00,// 0xeb,1,0x20,// 0xec,1,0x0c,// 0xed,1,0xc4,// 0xe8,1,0x38,// 0xe9,1,0x10,// 0xf1,1,0x01,// 0xf2,1,0x10,// //Gamma 2.2 Setting// 0x40,1,0x01,// 0x41,1,0x00,// 0x42,1,0x00,// 0x43,1,0x10,// 0x44,1,0x0e,// 0x45,1,0x24,// 0x46,1,0x04,// 0x47,1,0x50,// 0x48,1,0x02,// 0x49,1,0x13,// 0x4a,1,0x19,// 0x4b,1,0x19,// 0x4c,1,0x16,// 0x50,1,0x1b,// 0x51,1,0x31,// 0x52,1,0x2f,// 0x53,1,0x3f,// 0x54,1,0x3f,// 0x55,1,0x3e,// 0x56,1,0x2f,// 0x57,1,0x7b,// 0x58,1,0x09,// 0x59,1,0x06,// 0x5a,1,0x06,// 0x5b,1,0x0c,// 0x5c,1,0x1d,// 0x5d,1,0xcc,// //Power Voltage Setting// 0x1b,1,0x1b,	//4.65v// 0x1a,1,0x01,// 0x24,1,0x2f,// 0x25,1,0x57,// //vcom offset// 0x23,1,0x88,// //Power on Setting// 0x19,1,0x01,// 0x01,1,0x00,// 0x1f,1,0x88,// 0xFF, 0x80 + 50/5,// 0x1f,1,0x80,// 0xFF, 0x80 + 50/5,// 0x1f,1,0x90,// 0xFF, 0x80 + 50/5,// 0x1f,1,0xd0,// 0xFF, 0x80 + 50/5,// 0x17,1,0x60,// 0x28,1,0x38,// 0xFF, 0x80 + 50/5,// 0x28,1,0x3f,// 0x02,1,0x00,// 0x03,1,0x00,// 0x04,1,0x00,// 0x05,1,0xef,// 0x06,1,0x00,// 0x07,1,0x00,// 0x08,1,0x01,// 0x09,1,0x3f,// 0x28,1,0x38,// 0xFF, 0x80 + 50/5,// 0x1f,1,0x89,// 0xFF, 0x80 + 50/5,// 0x28,1,0x04,// 0xFF, 0x80 + 50/5,// 0x19,1,0x00,// 0xFF, 0x80 + 50/5,0                            // END OF COMMAND LIST}, initd[] = {0x18,1,0x88,  //UADJ 75Hz0x19,1,0x01,  //OSC_EN='1', start Osc//Power Voltage Setting0x1B,1,0x1E, //VRH=4.60V0x1C,1,0x07, //AP Crosstalk    040x1A,1,0x01, //BT (VGH~15V,1,VGL~-10V,1,DDVDH~5V)0x24,1,0x38, //VMH 270x25,1,0x5F, //VML//VCOM offset0x23,1,0x8C, //for Flicker adjust0x1F,1,0x88,// GAS=1,1, VOMG=00,1, PON=0,1, DK=1,1, XDK=0,1, DVDH_TRI=0,1, STB=00xFF, 0x80 + 50/5,0x1F,1,0x80,// GAS=1,1, VOMG=00,1, PON=0,1, DK=0,1, XDK=0,1, DVDH_TRI=0,1, STB=00xFF, 0x80 + 50/5,0x1F,1,0x90,// GAS=1,1, VOMG=00,1, PON=1,1, DK=0,1, XDK=0,1, DVDH_TRI=0,1, STB=00xFF, 0x80 + 50/5,0x1F,1,0xD0,// GAS=1,1, VOMG=10,1, PON=1,1, DK=0,1, XDK=0,1, DDVDH_TRI=0,1, STB=00xFF, 0x80 + 50/5,//Display ON Setting0x28,1,0x38,   //GON=1,1, DTE=1,1, D=10000xFF, 0x80 + 400/5,0x28,1,0x3C,   //GON=1,1, DTE=1,1, D=11000x36,1,0x00,   //REV,1, BGR0x17,1,0x05,  //16BIT/PIXEL//Gamma 2.2 Setting0x40,1,0x00, //0x41,1,0x00, //0x42,1,0x00, //0x43,1,0x11, //0x44,1,0x0e, //0x45,1,0x23, //0x46,1,0x08, //0x47,1,0x53, //0x48,1,0x03, //0x49,1,0x11, //0x4A,1,0x18, //0x4B,1,0x1a, //0x4C,1,0x16, //0x50,1,0x1c, //0x51,1,0x31, //0x52,1,0x2e, //0x53,1,0x3f, //0x54,1,0x3f, //0x55,1,0x3f, //0x56,1,0x2c, //0x57,1,0x77, //0x58,1,0x09, //0x59,1,0x05, //0x5A,1,0x07, //0x5B,1,0x0e, //0x5C,1,0x1c, //0x5D,1,0x88, //0xFF, 0x80 + 100/5,0,                           // END OF COMMAND LIST};/***********************  STATIC VARIABLES**********************//***********************      MACROS**********************//***********************   GLOBAL FUNCTIONS**********************/
static uint8_t displayType = HX8347B;   //HX8347B:RGBvoid lcd_cs_port(uint8_t status)
{if (status) {gpio_set_level(HX8347_CS, 1);} else {gpio_set_level(HX8347_CS, 0);}
}void hx8347_init(void)
{//Initialize non-SPI GPIOs//3线spi没有DC引脚//       gpio_pad_select_gpio(HX8347_DC);// gpio_set_direction(HX8347_DC, GPIO_MODE_OUTPUT);gpio_pad_select_gpio(HX8347_CS);gpio_set_direction(HX8347_CS, GPIO_MODE_OUTPUT);gpio_pad_select_gpio(HX8347_RST);gpio_set_direction(HX8347_RST, GPIO_MODE_OUTPUT);#if HX8347_ENABLE_BACKLIGHT_CONTROLgpio_pad_select_gpio(HX8347_BCKL);gpio_set_direction(HX8347_BCKL, GPIO_MODE_OUTPUT);
#endif//Reset the displaygpio_set_level(HX8347_RST, 0);vTaskDelay(10 / portTICK_PERIOD_MS);gpio_set_level(HX8347_RST, 1);vTaskDelay(120 / portTICK_PERIOD_MS);ESP_LOGI(TAG, "Initialization.");//Send all the commandsconst uint8_t *addr = (displayType == HX8347B) ? initb : initd;uint8_t        cmd, x, numArgs;while((cmd = *addr++) > 0) { // '0' command ends listx = *addr++;numArgs = x & 0x7F;if (cmd != 0xFF) { // '255' is ignoredif (x & 0x80) {  // If high bit set, numArgs is a delay timehx8347_send_cmd(cmd);} else {hx8347_send_cmd(cmd);hx8347_send_data((void *) addr, numArgs);addr += numArgs;}}if (x & 0x80) {       // If high bit set...vTaskDelay(numArgs * 5 / portTICK_PERIOD_MS); // numArgs is actually a delay time (5ms units)}}//hx8347_set_rotation(2); //Portrait竖屏 选0或2；Landscape横屏 选1或3。// #if HX8347_INVERT_COLORS
// 	hx8347_send_cmd(HX8347_INVON);
// #else
//     hx8347_send_cmd(HX8347_INVOFF);
// #endif//hx8347_enable_backlight(true);
}void hx8347_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
{uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);uint8_t data[34]={0};/* Column addresses  */uint8_t xb[] = {(uint8_t) (area->x1 >> 8) & 0xFF,(uint8_t) (area->x1) & 0xFF,(uint8_t) (area->x2 >> 8) & 0xFF,(uint8_t) (area->x2) & 0xFF,};/* Page addresses  */uint8_t yb[] = {(uint8_t) (area->y1 >> 8) & 0xFF,(uint8_t) (area->y1) & 0xFF,(uint8_t) (area->y2 >> 8) & 0xFF,(uint8_t) (area->y2) & 0xFF,};//ESP_LOGI(TAG, "hx8347_flush X:%d,%d,%d,%d",xb[0],xb[1],xb[2],xb[3]);//ESP_LOGI(TAG, "hx8347_flush Y:%d,%d,%d,%d",yb[0],yb[1],yb[2],yb[3]);// /*Column addresses*/// hx8347_send_cmd(0x02);// hx8347_send_data(&xb[0], 1);// hx8347_send_cmd(0x03);// hx8347_send_data(&xb[1], 1);// hx8347_send_cmd(0x04);// hx8347_send_data(&xb[2], 1);// hx8347_send_cmd(0x05);// hx8347_send_data(&xb[3], 1);// /*Page addresses*/// hx8347_send_cmd(0x06);// hx8347_send_data(&yb[0], 1);// hx8347_send_cmd(0x07);// hx8347_send_data(&yb[1], 1);// hx8347_send_cmd(0x08);// hx8347_send_data(&yb[2], 1);// hx8347_send_cmd(0x09);// hx8347_send_data(&yb[3], 1);// /*Memory write*/// hx8347_send_cmd(0x22);data[0]=0x70; data[1]=0x02; data[2]=0x72; data[3]=xb[0];data[4]=0x70; data[5]=0x03; data[6]=0x72; data[7]=xb[1];data[8]=0x70; data[9]=0x04; data[10]=0x72;data[11]=xb[2];data[12]=0x70;data[13]=0x05;data[14]=0x72;data[15]=xb[3];data[16]=0x70; data[17]=0x06; data[18]=0x72; data[19]=yb[0];data[20]=0x70; data[21]=0x07; data[22]=0x72; data[23]=yb[1];data[24]=0x70; data[25]=0x08; data[26]=0x72; data[27]=yb[2];data[28]=0x70; data[29]=0x09; data[30]=0x72; data[31]=yb[3];data[32]=0x70; data[33]=0x22;for(uint8_t i=0;i<17;i++){lcd_cs_port(0);//disp_spi_send_data(&data[2*i],2);hx8347_send_16bit(data[2*i],data[2*i+1]);lcd_cs_port(1);}hx8347_send_color(color_map, size * 2);
}void hx8347_enable_backlight(bool backlight)
{
#if HX8347_ENABLE_BACKLIGHT_CONTROLESP_LOGD(TAG, "%s backlight.\n", backlight ? "Enabling" : "Disabling");uint32_t tmp = 0;#if (HX8347_BCKL_ACTIVE_LVL==1)tmp = backlight ? 1 : 0;
#elsetmp = backlight ? 0 : 1;
#endifgpio_set_level(HX8347_BCKL, tmp);
#endif
}void hx8347_set_rotation(uint8_t r)
{r = r & 3; // can't be higher than 3switch(r) {case 0:r = MADCTL_MX | MADCTL_MY | MADCTL_RGB;break;case 1:r = MADCTL_MV | MADCTL_MY | MADCTL_RGB;break;case 2:r = MADCTL_RGB;break;case 3:r = MADCTL_MX | MADCTL_MV | MADCTL_RGB;break;}hx8347_send_cmd(HX8347_MADCTL);hx8347_send_data(&r, 1);
}/***********************   STATIC FUNCTIONS**********************/static void hx8347_send_16bit(uint8_t d1,uint8_t d2)
{uint8_t c[2];c[0]=d1;c[1]=d2;lcd_cs_port(0);disp_spi_send_data(&c, 2);      //发送2字节lcd_cs_port(1);
}static void hx8347_send_cmd(uint8_t cmd)
{uint8_t c;c=0x70;hx8347_send_16bit(c,cmd);// lcd_cs_port(0);// disp_spi_send_data(&c, 1);      //Command mode// disp_spi_send_data(&cmd, 1);// lcd_cs_port(1);
}static void hx8347_send_data(void * data, uint16_t length)
{uint8_t c;c=0x72;lcd_cs_port(0);disp_spi_send_data(&c, 1);      //Data modedisp_spi_send_data(data, length);lcd_cs_port(1);
}static void hx8347_send_color(void * data, uint16_t length)
{uint8_t c;c=0x72;lcd_cs_port(0);disp_spi_send_data(&c, 1);      //Data modedisp_spi_send_colors(data, length);lcd_cs_port(1);
}

三、修改components\lvgl_esp32_drivers\lvgl_tft\Kconfig文件内容

        在相关位置增加hx8347相关信息，位置可参考其他显示IC配置，方便idf.py menuconfig进行配置：

    config LV_TFT_DISPLAY_USER_CONTROLLER_HX8347

        bool "HX8347"

            select LV_TFT_DISPLAY_CONTROLLER_HX8347

            select LV_TFT_DISPLAY_PROTOCOL_SPI

    config LV_TFT_DISPLAY_CONTROLLER_HX8347

        bool

        help

            HX8347 display controller.

  

配好后，idf.py menuconfig 中就会有hx8347的选项：

 

四、其他的文件修改：

disp_spi.h

//增加了DISP_SPI_SEND_POLLING
static inline void disp_spi_send_colors(uint8_t *data, size_t length) {disp_spi_transaction(data, length,DISP_SPI_SEND_QUEUED | DISP_SPI_SIGNAL_FLUSH|DISP_SPI_SEND_POLLING,NULL, 0, 0);
}

disp_spi.c

void disp_spi_transaction(const uint8_t *data, size_t length,disp_spi_send_flag_t flags, uint8_t *out,uint64_t addr, uint8_t dummy_bits)
{.......if (length <= 4 && data != NULL) {t.base.flags = SPI_TRANS_USE_TXDATA;memcpy(t.base.tx_data, data, length);} else {t.base.flags =SPI_DEVICE_CLK_AS_CS|SPI_DEVICE_NO_DUMMY;//增加了这句t.base.tx_buffer = data;}
.......

disp_driver.h增加了：

#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_HX8347
#include "hx8347.h"

disp_dirver.c增加了：

#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_HX8347hx8347_init();#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_HX8347hx8347_flush(drv, area, color_map);

应该还有其他的地方修改，总之是使lv_port_esp32支持HX8347。

五、最后

LVGL

六、总结

1、ESP32S3运行LVGL，需要LVGL+lv_port_esp32。

2、运行LVGL通常需要4线spi，很不巧，笔者手头的HX8347只支持3线SPI。所以什么都要自己写。3线SPI性能比4线差不少。CS还需要手动控制。

3、0x16寄存器要设置下面这样，否则左右可能颠倒

0x16,1,0x38, // MY=0, MX=1, MV=1, BGR=1

如果用竖屏，要加上：

 0x16,1,0x80, // MY=1, MX=0, MV=0,竖屏时去掉注释

4、idf.py menuconfig的一些设置：

flash size

 运行的例子：

LVGL configuration

LVGL TFT Display configration 

 

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