[add] show_logo

examples/show_logo/.gitignore

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+
+dist
+build
+.config.mk
+.flash.conf.json
+

examples/show_logo/SConstruct

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+from pathlib import Path
+import os
+with open(str(Path(os.getcwd())/'..'/'..'/'tools'/'scons'/'project.py')) as f:
+    exec(f.read())

examples/show_logo/config_defaults.mk

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+# unix
+CONFIG_TOOLCHAIN_PATH="/opt/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin"
+# win
+# CONFIG_TOOLCHAIN_PATH="..\\gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf\\bin"
+
+CONFIG_TOOLCHAIN_PREFIX="arm-linux-gnueabihf-"
+
+# CONFIG_MINICV2_COMPONENT_ENABLED=y
+CONFIG_DEVICE_DRIVER_ENABLED=y
+CONFIG_DEVICE_FRAMEBUFFER_ENABLED=y
+CONFIG_STB_ENABLED=y

examples/show_logo/main/SConstruct

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+# project_root/src/SConscript
+import os
+# Import the environment from the SConstruct file
+Import('env')
+with open(env['PROJECT_TOOL_S']) as f:
+    exec(f.read())
+
+
+SRCS = Glob('src/*.c*')
+INCLUDE = [ADir('include'), ADir('.')]
+PRIVATE_INCLUDE = []
+REQUIREMENTS = ['pthread', 'DeviceDriver', 'stb']
+STATIC_LIB = []
+DYNAMIC_LIB = []
+DEFINITIONS = []
+DEFINITIONS_PRIVATE = []
+LDFLAGS = []
+LINK_SEARCH_PATH = []
+
+
+env['COMPONENTS'].append({'target':env['PROJECT_NAME'],
+                          'SRCS':SRCS,
+                          'INCLUDE':INCLUDE,
+                          'PRIVATE_INCLUDE':PRIVATE_INCLUDE,
+                          'REQUIREMENTS':REQUIREMENTS,
+                          'STATIC_LIB':STATIC_LIB,
+                          'DYNAMIC_LIB':DYNAMIC_LIB,
+                          'DEFINITIONS':DEFINITIONS,
+                          'DEFINITIONS_PRIVATE':DEFINITIONS_PRIVATE,
+                          'LDFLAGS':LDFLAGS,
+                          'LINK_SEARCH_PATH':LINK_SEARCH_PATH,
+                          'REGISTER':'project'
+                          })

examples/show_logo/main/include/main.h

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+#pragma once
+
+

examples/show_logo/main/src/main.c

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+#include <stdio.h>
+#include <string.h>
+#include "framebuffer/fbtools.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
+
+int main(int argc, char **argv)
+{
+    FBDEV fbdev;
+    memset(&fbdev, 0, sizeof(FBDEV));
+    strcpy(fbdev.dev, "/dev/fb1");
+    if (fb_open(&fbdev) == 0)
+    {
+        printf("open frame buffer error/n");
+        return -1;
+    }
+    int w = fbdev.fb_var.xres;
+    int h = fbdev.fb_var.yres;
+    int color = fbdev.fb_var.bits_per_pixel;
+
+    uint16_t *piex = fbdev.fb_mem;
+
+    int iw, ih, n;
+    unsigned char *idata = stbi_load("/usr/local/m5stack/logo.jpg", &iw, &ih, &n, 0);
+    for (int i = 0; i < iw * ih; i++)
+    {
+        piex[i] = ((((idata[3 * i]) & 0xF8) << 8) | (((idata[3 * i + 1]) & 0xFC) << 3) | ((idata[3 * i + 2]) >> 3));
+    }
+    stbi_image_free(idata);
+    
+    usleep(60 * 1000);
+
+    fb_close(&fbdev);
+    return 0;
+}