modift nano 2.4inch driver

usr/rpi-fbcp/CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8)
+
+SET(COMPILE_DEFINITIONS -Werror)
+
+include_directories(/opt/vc/include)
+include_directories(/opt/vc/include/interface/vcos/pthreads)
+include_directories(/opt/vc/include/interface/vmcs_host)
+include_directories(/opt/vc/include/interface/vmcs_host/linux)
+
+link_directories(/opt/vc/lib)
+
+add_executable(fbcp main.c)
+
+target_link_libraries(fbcp bcm_host)

usr/rpi-fbcp/LICENSE

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+MIT License
+
+Copyright (c) 2013 Tasanakorn Phaipool
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

usr/rpi-fbcp/README.md

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+Raspberry Pi Framebuffer Copy
+=============================
+This program used for copy primary framebuffer to secondary framebuffer (eg. FBTFT). It require lastest raspberry pi firmware (> 2013-07-11) to working properly.
+
+Tested on Raspberry Pi 3
+========================
+2017-11-29-raspbian-stretch
+
+
+Requirement
+-----------
+cmake
+
+$ sudo apt-get install cmake
+
+Build
+-----
+
+    $ mkdir build
+    
+    $ cd build
+    
+    $ cmake ..
+    
+    $ make 
+
+
+How To Use
+----------
+$ ./fbcp
+
+Wanna to run from booting
+-------------------------
+$ sudo cp fbcp /usr/bin
+$ sudo chmod +x /usr/bin/fbcp
+$ sudo nano /etc/rc.local -> add new line before "exit 0" with "/usr/bin/fbcp &" without quote
+$ sudo reboot
+
+
+License
+-------
+
+
+Copyright (c) 2013 Tasanakorn Phaipool
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

usr/rpi-fbcp/main.c

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+
+#include <stdio.h>
+#include <syslog.h>
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include <sys/mman.h>
+
+#include <bcm_host.h>
+
+int process() {
+    DISPMANX_DISPLAY_HANDLE_T display;
+    DISPMANX_MODEINFO_T display_info;
+    DISPMANX_RESOURCE_HANDLE_T screen_resource;
+    VC_IMAGE_TRANSFORM_T transform;
+    uint32_t image_prt;
+    VC_RECT_T rect1;
+    int ret;
+    int fbfd = 0;
+    char *fbp = 0;
+
+    struct fb_var_screeninfo vinfo;
+    struct fb_fix_screeninfo finfo;
+
+
+    bcm_host_init();
+
+    display = vc_dispmanx_display_open(0);
+    if (!display) {
+        syslog(LOG_ERR, "Unable to open primary display");
+        return -1;
+    }
+    ret = vc_dispmanx_display_get_info(display, &display_info);
+    if (ret) {
+        syslog(LOG_ERR, "Unable to get primary display information");
+        return -1;
+    }
+    syslog(LOG_INFO, "Primary display is %d x %d", display_info.width, display_info.height);
+
+
+    fbfd = open("/dev/fb1", O_RDWR);
+    if (fbfd == -1) {
+        syslog(LOG_ERR, "Unable to open secondary display");
+        return -1;
+    }
+    if (ioctl(fbfd, FBIOGET_FSCREENINFO, &finfo)) {
+        syslog(LOG_ERR, "Unable to get secondary display information");
+        return -1;
+    }
+    if (ioctl(fbfd, FBIOGET_VSCREENINFO, &vinfo)) {
+        syslog(LOG_ERR, "Unable to get secondary display information");
+        return -1;
+    }
+
+    syslog(LOG_INFO, "Second display is %d x %d %dbps\n", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
+
+    screen_resource = vc_dispmanx_resource_create(VC_IMAGE_RGB565, vinfo.xres, vinfo.yres, &image_prt);
+    if (!screen_resource) {
+        syslog(LOG_ERR, "Unable to create screen buffer");
+        close(fbfd);
+        vc_dispmanx_display_close(display);
+        return -1;
+    }
+
+    fbp = (char*) mmap(0, finfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fbfd, 0);
+    if (fbp <= 0) {
+        syslog(LOG_ERR, "Unable to create memory mapping");
+        close(fbfd);
+        ret = vc_dispmanx_resource_delete(screen_resource);
+        vc_dispmanx_display_close(display);
+        return -1;
+    }
+
+    vc_dispmanx_rect_set(&rect1, 0, 0, vinfo.xres, vinfo.yres);
+
+    while (1) {
+        ret = vc_dispmanx_snapshot(display, screen_resource, 0);
+        vc_dispmanx_resource_read_data(screen_resource, &rect1, fbp, vinfo.xres * vinfo.bits_per_pixel / 8);
+        usleep(25 * 1000);
+    }
+
+    munmap(fbp, finfo.smem_len);
+    close(fbfd);
+    ret = vc_dispmanx_resource_delete(screen_resource);
+    vc_dispmanx_display_close(display);
+}
+
+int main(int argc, char **argv) {
+    setlogmask(LOG_UPTO(LOG_DEBUG));
+    openlog("fbcp", LOG_NDELAY | LOG_PID, LOG_USER);
+
+    return process();
+}