Hi Team,
The LVGL application Touch working in reverse direction
Please see the attached image file.
if i click at 1 then i am able to select selectors tab
if i click at 2 then i am able to select visuals tab
if i click at 3 then i am able to select controls tab
where should i change the touch parameters.
i am sharing lv_drv_conf file and main.c file
main.c
#include "lvgl/lvgl.h"
#include "lv_drivers/display/fbdev.h"
#include "lv_drivers/indev/evdev.h"
#include "lv_examples/lv_examples.h"
#include <unistd.h>
#include <pthread.h>
#include <time.h>
#include <sys/time.h>
#define DISP_BUF_SIZE (80 * LV_HOR_RES_MAX)
int main(void)
{
/*LittlevGL init*/
lv_init();
/*Linux frame buffer device init*/
fbdev_init();
evdev_init();
/*A small buffer for LittlevGL to draw the screen's content*/
static lv_color_t buf[DISP_BUF_SIZE];
/*Initialize a descriptor for the buffer*/
static lv_disp_buf_t disp_buf;
lv_disp_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE);
/*Initialize and register a display driver*/
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.buffer = &disp_buf;
disp_drv.flush_cb = fbdev_flush;
lv_disp_drv_register(&disp_drv);
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = evdev_read;
lv_indev_t * mouse_indev = lv_indev_drv_register(&indev_drv);
/*Create a Demo*/
lv_demo_widgets();
// lv_demo_printer();
/*Handle LitlevGL tasks (tickless mode)*/
while(1) {
lv_task_handler();
usleep(5000);
}
return 0;
}
/*Set in lv_conf.h as `LV_TICK_CUSTOM_SYS_TIME_EXPR`*/
uint32_t custom_tick_get(void)
{
static uint64_t start_ms = 0;
if(start_ms == 0) {
struct timeval tv_start;
gettimeofday(&tv_start, NULL);
start_ms = (tv_start.tv_sec * 1000000 + tv_start.tv_usec) / 1000;
}
struct timeval tv_now;
gettimeofday(&tv_now, NULL);
uint64_t now_ms;
now_ms = (tv_now.tv_sec * 1000000 + tv_now.tv_usec) / 1000;
uint32_t time_ms = now_ms - start_ms;
return time_ms;
}
lv_drv_conf.h
/**
* @file lv_drv_conf.h
*
*/
/*
* COPY THIS FILE AS lv_drv_conf.h
*/
#if 1 /*Set it to "1" to enable the content*/
#ifndef LV_DRV_CONF_H
#define LV_DRV_CONF_H
#include "lv_conf.h"
/*********************
* DELAY INTERFACE
*********************/
#define LV_DRV_DELAY_INCLUDE <stdint.h> /*Dummy include by default*/
#define LV_DRV_DELAY_US(us) /*delay_us(us)*/ /*Delay the given number of microseconds*/
#define LV_DRV_DELAY_MS(ms) /*delay_ms(ms)*/ /*Delay the given number of milliseconds*/
/*********************
* DISPLAY INTERFACE
*********************/
/*------------
* Common
*------------*/
#define LV_DRV_DISP_INCLUDE <stdint.h> /*Dummy include by default*/
#define LV_DRV_DISP_CMD_DATA(val) /*pin_x_set(val)*/ /*Set the command/data pin to 'val'*/
#define LV_DRV_DISP_RST(val) /*pin_x_set(val)*/ /*Set the reset pin to 'val'*/
/*---------
* SPI
*---------*/
#define LV_DRV_DISP_SPI_CS(val) /*spi_cs_set(val)*/ /*Set the SPI's Chip select to 'val'*/
#define LV_DRV_DISP_SPI_WR_BYTE(data) /*spi_wr(data)*/ /*Write a byte the SPI bus*/
#define LV_DRV_DISP_SPI_WR_ARRAY(adr, n) /*spi_wr_mem(adr, n)*/ /*Write 'n' bytes to SPI bus from 'adr'*/
/*------------------
* Parallel port
*-----------------*/
#define LV_DRV_DISP_PAR_CS(val) /*par_cs_set(val)*/ /*Set the Parallel port's Chip select to 'val'*/
#define LV_DRV_DISP_PAR_SLOW /*par_slow()*/ /*Set low speed on the parallel port*/
#define LV_DRV_DISP_PAR_FAST /*par_fast()*/ /*Set high speed on the parallel port*/
#define LV_DRV_DISP_PAR_WR_WORD(data) /*par_wr(data)*/ /*Write a word to the parallel port*/
#define LV_DRV_DISP_PAR_WR_ARRAY(adr, n) /*par_wr_mem(adr,n)*/ /*Write 'n' bytes to Parallel ports from 'adr'*/
/***************************
* INPUT DEVICE INTERFACE
***************************/
/*----------
* Common
*----------*/
#define LV_DRV_INDEV_INCLUDE <stdint.h> /*Dummy include by default*/
#define LV_DRV_INDEV_RST(val) /*pin_x_set(val)*/ /*Set the reset pin to 'val'*/
#define LV_DRV_INDEV_IRQ_READ 0 /*pn_x_read()*/ /*Read the IRQ pin*/
/*---------
* SPI
*---------*/
#define LV_DRV_INDEV_SPI_CS(val) /*spi_cs_set(val)*/ /*Set the SPI's Chip select to 'val'*/
#define LV_DRV_INDEV_SPI_XCHG_BYTE(data) 0 /*spi_xchg(val)*/ /*Write 'val' to SPI and give the read value*/
/*---------
* I2C
*---------*/
#define LV_DRV_INDEV_I2C_START /*i2c_start()*/ /*Make an I2C start*/
#define LV_DRV_INDEV_I2C_STOP /*i2c_stop()*/ /*Make an I2C stop*/
#define LV_DRV_INDEV_I2C_RESTART /*i2c_restart()*/ /*Make an I2C restart*/
#define LV_DRV_INDEV_I2C_WR(data) /*i2c_wr(data)*/ /*Write a byte to the I1C bus*/
#define LV_DRV_INDEV_I2C_READ(last_read) 0 /*i2c_rd()*/ /*Read a byte from the I2C bud*/
/*********************
* DISPLAY DRIVERS
*********************/
/*-------------------
* Monitor of PC
*-------------------*/
#ifndef USE_MONITOR
# define USE_MONITOR 0
#endif
#if USE_MONITOR
# define MONITOR_HOR_RES LV_HOR_RES
# define MONITOR_VER_RES LV_VER_RES
/* Scale window by this factor (useful when simulating small screens) */
# define MONITOR_ZOOM 1
/* Used to test true double buffering with only address changing.
* Set LV_VDB_SIZE = (LV_HOR_RES * LV_VER_RES) and LV_VDB_DOUBLE = 1 and LV_COLOR_DEPTH = 32" */
# define MONITOR_DOUBLE_BUFFERED 0
/*Eclipse: <SDL2/SDL.h> Visual Studio: <SDL.h>*/
# define MONITOR_SDL_INCLUDE_PATH <SDL2/SDL.h>
/*Different rendering might be used if running in a Virtual machine*/
# define MONITOR_VIRTUAL_MACHINE 0
/*Open two windows to test multi display support*/
# define MONITOR_DUAL 0
#endif
/*-----------------------------------
* Native Windows (including mouse)
*----------------------------------*/
#ifndef USE_WINDOWS
# define USE_WINDOWS 0
#endif
#define USE_WINDOWS 0
#if USE_WINDOWS
# define WINDOW_HOR_RES 480
# define WINDOW_VER_RES 320
#endif
/*----------------
* SSD1963
*--------------*/
#ifndef USE_SSD1963
# define USE_SSD1963 0
#endif
#if USE_SSD1963
# define SSD1963_HOR_RES LV_HOR_RES
# define SSD1963_VER_RES LV_VER_RES
# define SSD1963_HT 531
# define SSD1963_HPS 43
# define SSD1963_LPS 8
# define SSD1963_HPW 10
# define SSD1963_VT 288
# define SSD1963_VPS 12
# define SSD1963_FPS 4
# define SSD1963_VPW 10
# define SSD1963_HS_NEG 0 /*Negative hsync*/
# define SSD1963_VS_NEG 0 /*Negative vsync*/
# define SSD1963_ORI 0 /*0, 90, 180, 270*/
# define SSD1963_COLOR_DEPTH 16
#endif
/*----------------
* R61581
*--------------*/
#ifndef USE_R61581
# define USE_R61581 0
#endif
#if USE_R61581
# define R61581_HOR_RES LV_HOR_RES
# define R61581_VER_RES LV_VER_RES
# define R61581_HSPL 0 /*HSYNC signal polarity*/
# define R61581_HSL 10 /*HSYNC length (Not Implemented)*/
# define R61581_HFP 10 /*Horitontal Front poarch (Not Implemented)*/
# define R61581_HBP 10 /*Horitontal Back poarch (Not Implemented */
# define R61581_VSPL 0 /*VSYNC signal polarity*/
# define R61581_VSL 10 /*VSYNC length (Not Implemented)*/
# define R61581_VFP 8 /*Vertical Front poarch*/
# define R61581_VBP 8 /*Vertical Back poarch */
# define R61581_DPL 0 /*DCLK signal polarity*/
# define R61581_EPL 1 /*ENABLE signal polarity*/
# define R61581_ORI 0 /*0, 180*/
# define R61581_LV_COLOR_DEPTH 16 /*Fix 16 bit*/
#endif
/*------------------------------
* ST7565 (Monochrome, low res.)
*-----------------------------*/
#ifndef USE_ST7565
# define USE_ST7565 0
#endif
#if USE_ST7565
/*No settings*/
#endif /*USE_ST7565*/
/*------------------------------------------
* UC1610 (4 gray 160*[104|128])
* (EA DOGXL160 160x104 tested)
*-----------------------------------------*/
#ifndef USE_UC1610
# define USE_UC1610 0
#endif
#if USE_UC1610
# define UC1610_HOR_RES LV_HOR_RES
# define UC1610_VER_RES LV_VER_RES
# define UC1610_INIT_CONTRAST 33 /* init contrast, values in [%] */
# define UC1610_INIT_HARD_RST 0 /* 1 : hardware reset at init, 0 : software reset */
# define UC1610_TOP_VIEW 0 /* 0 : Bottom View, 1 : Top View */
#endif /*USE_UC1610*/
/*-------------------------------------------------
* SHARP memory in pixel monochrome display series
* LS012B7DD01 (184x38 pixels.)
* LS013B7DH03 (128x128 pixels.)
* LS013B7DH05 (144x168 pixels.)
* LS027B7DH01 (400x240 pixels.) (tested)
* LS032B7DD02 (336x536 pixels.)
* LS044Q7DH01 (320x240 pixels.)
*------------------------------------------------*/
#ifndef USE_SHARP_MIP
# define USE_SHARP_MIP 0
#endif
#if USE_SHARP_MIP
# define SHARP_MIP_HOR_RES LV_HOR_RES
# define SHARP_MIP_VER_RES LV_VER_RES
# define SHARP_MIP_SOFT_COM_INVERSION 0
# define SHARP_MIP_REV_BYTE(b) /*((uint8_t) __REV(__RBIT(b)))*/ /*Architecture / compiler dependent byte bits order reverse*/
#endif /*USE_SHARP_MIP*/
/*-----------------------------------------
* Linux frame buffer device (/dev/fbx)
*-----------------------------------------*/
#ifndef USE_FBDEV
# define USE_FBDEV 1
#endif
#if USE_FBDEV
# define FBDEV_PATH "/dev/fb0"
#endif
/*-----------------------------------------
* FreeBSD frame buffer device (/dev/fbx)
*.........................................*/
#ifndef USE_BSD_FBDEV
# define USE_BSD_FBDEV 0
#endif
#if USE_BSD_FBDEV
# define FBDEV_PATH "/dev/fb0"
#endif
/*********************
* INPUT DEVICES
*********************/
/*--------------
* XPT2046
*--------------*/
#ifndef USE_XPT2046
# define USE_XPT2046 0
#endif
#if USE_XPT2046
# define XPT2046_HOR_RES 480
# define XPT2046_VER_RES 320
# define XPT2046_X_MIN 200
# define XPT2046_Y_MIN 200
# define XPT2046_X_MAX 3800
# define XPT2046_Y_MAX 3800
# define XPT2046_AVG 4
# define XPT2046_X_INV 0
# define XPT2046_Y_INV 0
# define XPT2046_XY_SWAP 0
#endif
/*-----------------
* FT5406EE8
*-----------------*/
#ifndef USE_FT5406EE8
# define USE_FT5406EE8 0
#endif
#if USE_FT5406EE8
# define FT5406EE8_I2C_ADR 0x38 /*7 bit address*/
#endif
/*---------------
* AD TOUCH
*--------------*/
#ifndef USE_AD_TOUCH
# define USE_AD_TOUCH 0
#endif
#if USE_AD_TOUCH
/*No settings*/
#endif
/*---------------------------------------
* Mouse or touchpad on PC (using SDL)
*-------------------------------------*/
#ifndef USE_MOUSE
# define USE_MOUSE 0
#endif
#if USE_MOUSE
/*No settings*/
#endif
/*-------------------------------------------
* Mousewheel as encoder on PC (using SDL)
*------------------------------------------*/
#ifndef USE_MOUSEWHEEL
# define USE_MOUSEWHEEL 0
#endif
#if USE_MOUSEWHEEL
/*No settings*/
#endif
/*-------------------------------------------------
* Touchscreen as libinput interface (for Linux based systems)
*------------------------------------------------*/
#ifndef USE_LIBINPUT
# define USE_LIBINPUT 0
#endif
#if USE_LIBINPUT
# define LIBINPUT_NAME "/dev/input/event0" /*You can use the "evtest" Linux tool to get the list of devices and test them*/
#endif /*USE_LIBINPUT*/
/*-------------------------------------------------
* Mouse or touchpad as evdev interface (for Linux based systems)
*------------------------------------------------*/
#ifndef USE_EVDEV
# define USE_EVDEV 1
#endif
#if USE_EVDEV
# define EVDEV_NAME "/dev/input/event1" /*You can use the "evtest" Linux tool to get the list of devices and test them*/
# define EVDEV_SWAP_AXES 0 /*Swap the x and y axes of the touchscreen*/
# define EVDEV_SCALE 0 /* Scale input, e.g. if touchscreen resolution does not match display resolution */
# if EVDEV_SCALE
# define EVDEV_SCALE_HOR_RES (4096) /* Horizontal resolution of touchscreen */
# define EVDEV_SCALE_VER_RES (4096) /* Vertical resolution of touchscreen */
# endif /*EVDEV_SCALE*/
# define EVDEV_CALIBRATE 0 /*Scale and offset the touchscreen coordinates by using maximum and minimum values for each axis*/
# if EVDEV_CALIBRATE
# define EVDEV_HOR_MIN 3800 /*If EVDEV_XXX_MIN > EVDEV_XXX_MAX the XXX axis is automatically inverted*/
# define EVDEV_HOR_MAX 200
# define EVDEV_VER_MIN 200
# define EVDEV_VER_MAX 3800
# endif /*EVDEV_SCALE*/
#endif /*USE_EVDEV*/
/*-------------------------------
* Keyboard of a PC (using SDL)
*------------------------------*/
#ifndef USE_KEYBOARD
# define USE_KEYBOARD 0
#endif
#if USE_KEYBOARD
/*No settings*/
#endif
#endif /*LV_DRV_CONF_H*/
#endif /*End of "Content enable"*/
Please help me with this.
Thanks in Advance.