diff --git a/libraries/Camera/src/Camera.cpp b/libraries/Camera/src/Camera.cpp
index df137fb..8839e7a 100644
--- a/libraries/Camera/src/Camera.cpp
+++ b/libraries/Camera/src/Camera.cpp
@@ -36,7 +36,7 @@ static const int resolution[][2] = {
     {1600, 1200},    /* UXGA      */
 };
 
-Camera::Camera(framesize_t frameSize = FRAMESIZE_QVGA, pixformat_t pixFormat = PIXFORMAT_RGB565)
+Camera::Camera(framesize_t frameSize, pixformat_t pixFormat)
 {
     _frameSize = frameSize;
     _pixFormat = pixFormat;
@@ -44,6 +44,14 @@ Camera::Camera(framesize_t frameSize = FRAMESIZE_QVGA, pixformat_t pixFormat = P
     _height = resolution[frameSize][1];
 }
 
+Camera::Camera(int16_t width, uint16_t height, pixformat_t pixFormat)
+{
+    _frameSize = FRAMESIZE_CUSTOM;
+    _pixFormat = pixFormat;
+    _width     = width;
+    _height    = height;
+}
+
 Camera::~Camera()
 {
     
diff --git a/libraries/Camera/src/Camera.h b/libraries/Camera/src/Camera.h
index b42b3cc..c067b2a 100644
--- a/libraries/Camera/src/Camera.h
+++ b/libraries/Camera/src/Camera.h
@@ -44,6 +44,7 @@ typedef enum {
     FRAMESIZE_SVGA,     // 800x600
     FRAMESIZE_SXGA,     // 1280x1024
     FRAMESIZE_UXGA,     // 1600x1200
+    FRAMESIZE_CUSTOM,
 } framesize_t;
 
 
@@ -51,6 +52,7 @@ class Camera{
 
 public:
     Camera(framesize_t frameSize, pixformat_t pixFormat);
+    Camera(int16_t width, uint16_t height, pixformat_t pixFormat);
     ~Camera();
     virtual bool begin( ) = 0;
     virtual void end() = 0;
@@ -64,8 +66,16 @@ public:
      *         If pixels format is RGB565: return RGB565 pixels with every uint16_t one pixel, e.g. RED: 0xF800
      */
     virtual uint8_t* snapshot() = 0;
-    virtual uint8_t* getRGB565(){ return 0; };
-    virtual uint8_t* getRGB888(){ return 0; };
+    /**
+     * @return pixels with RGB565 format,  every uint16_t one pixel, e.g. RED: 0xF800, so two pixels: {0xF800, 0xF800}
+     */
+    virtual uint16_t* getRGB565(){ return nullptr; };
+    /**
+     * 
+     * @return pixels with RGB888 format, for n pixels: {{R0,R1,...,Rn-1,},{G0,G1,...,Gn-1},{B0,B1,...,Bn-1}}
+     *                                    e.g. two RED pixel: {0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00}
+     */
+    virtual uint8_t* getRGB888(){ return nullptr; };
     virtual void setRotaion(uint8_t rotation) = 0;
     virtual void setInvert(bool invert) = 0;
 
diff --git a/libraries/KPU/examples/mobilenet_v1/MBNet_1000.cpp b/libraries/KPU/examples/mobilenet_v1/MBNet_1000.cpp
new file mode 100644
index 0000000..d59ac84
--- /dev/null
+++ b/libraries/KPU/examples/mobilenet_v1/MBNet_1000.cpp
@@ -0,0 +1,208 @@
+/**
+ * @file MBNet_1000.cpp
+ * @brief Detect object type
+ * @author Neucrack@sipeed.com
+ */
+
+
+#include "MBNet_1000.h"
+#include "names.h"
+#include "stdlib.h"
+
+
+MBNet_1000::MBNet_1000(KPUClass& kpu, Sipeed_ST7789& lcd, Sipeed_OV2640& camera)
+:_kpu(kpu),_lcd(lcd), _camera(camera),
+_count(0), _result(nullptr)
+{
+    _names = mbnet_label_name;
+    memset(_statistics, 0, sizeof(_statistics));
+}
+
+MBNet_1000::~MBNet_1000()
+{
+
+}
+
+
+int MBNet_1000::begin(const char* kmodel_name)
+{
+    File myFile;
+    if(!_camera.begin())
+        return -1;
+    if(!_lcd.begin(15000000, COLOR_RED))
+        return -2;
+    _camera.run(true);
+
+    if (!SD.begin()) 
+        return -3;
+
+    myFile = SD.open(kmodel_name);
+    if (!myFile)
+        return -4;
+    uint32_t fSize = myFile.size();
+    _lcd.setTextSize(2);
+    _lcd.setTextColor(COLOR_WHITE);
+    _lcd.setCursor(100,100);
+    _lcd.print("Loading ... ");
+    long ret = myFile.read(_model, fSize);
+    myFile.close();
+    if(ret != fSize)
+        return -5;
+
+    if(_kpu.begin(_model) != 0)
+        return -6;
+    return 0;
+}
+
+int MBNet_1000::detect()
+{
+    uint8_t* img;
+    uint8_t* img888;
+
+    img = _camera.snapshot();
+    if(img == nullptr || img==0)
+        return -1;
+    img888 = _camera.getRGB888();
+    if(_kpu.forward(img888) != 0)
+    {
+        return -2;
+    }
+    while( !_kpu.isForwardOk() );
+    if( _kpu.getResult((uint8_t**)&_result, &_count) != 0)
+    {
+        return -3;
+    }
+    return 0;
+}
+
+void MBNet_1000::show()
+{
+    float prob;
+    const char* name;
+    uint8_t i, j;
+    uint16_t* img;
+
+    _count /= sizeof(float);
+    label_init();
+    label_sort();
+
+    for(j=0; j<STATISTICS_NUM; ++j)
+        _statistics[j].updated = false;
+    for ( i = 0; i < 5; i++)
+	{
+		label_get(i, &prob, &name);
+        for(j=0; j<STATISTICS_NUM; ++j)
+        {
+            if(_statistics[j].name == NULL)
+            {
+                _statistics[j].name = name;
+                _statistics[j].sum  = prob;
+                _statistics[j].updated = true;
+                break;
+            }
+            else if( _statistics[j].name == name )
+            {
+                _statistics[j].sum += prob;
+                _statistics[j].updated = true;
+                break;
+            }
+            else
+            {
+            }
+        }
+        if( j == STATISTICS_NUM)
+        {
+            float min = _statistics[0].sum;
+            j = 0;
+            for(i=1; i<STATISTICS_NUM; ++i)
+            {
+                if(_statistics[i].name)
+                {
+                    if(_statistics[i].sum <= min)
+                    {
+                        min = _statistics[i].sum;
+                        j = i;
+                    }
+                }
+            }
+            _statistics[j].name = name;
+            _statistics[j].sum  = prob;
+            _statistics[j].updated = true;
+        }
+    }
+    float max = _statistics[0].sum;
+    float second = 0;
+    uint8_t index1=0, index2 = 0;
+    for(i=0; i<STATISTICS_NUM; ++i)
+    {
+        if(_statistics[i].name)
+        {
+            if(_statistics[i].sum > max)
+            {
+                max = _statistics[i].sum;
+                index1 = i;
+            }
+            else if(_statistics[i].sum > second && _statistics[i].sum<max)
+            {
+                index2 = i;
+            }
+        }
+        if( !_statistics[i].updated )
+        {
+            float tmp = _statistics[i].sum - _statistics[i].sum*2/5;
+            if( tmp < 0)
+                tmp = 0;
+            _statistics[i].sum = tmp;
+        }
+    }
+    img = _camera.getRGB565();
+    _lcd.fillRect(224,0, _lcd.width()-224, _lcd.height(), COLOR_RED);
+    _lcd.drawImage(0, 0, _camera.width(), _camera.height(), img);
+    _lcd.setTextSize(2);
+    _lcd.setTextColor(COLOR_WHITE);
+    _lcd.setCursor(0,0);
+    _lcd.println(_statistics[index1].name);
+    _lcd.println("-----");
+    _lcd.println(_statistics[index2].name);
+    // _lcd.println("=======");
+    // _lcd.println(_names[_index[0]]);
+    // _lcd.println(_names[_index[1]]);
+    // _lcd.println(_names[_index[2]]);
+    // _lcd.println(_names[_index[3]]);
+    // _lcd.println(_names[_index[4]]);
+}
+
+
+void MBNet_1000::label_init( )
+{
+	int i;
+	for(i = 0; i < _count; i++)
+		_index[i] = i;
+}
+
+void MBNet_1000::label_sort(void)
+{
+    int i,j;
+    float tmp_prob;
+    uint16_t tmp_index;
+    for(j=0; j<_count; j++)
+        for(i=0; i<_count-1-j; i++)
+            if(_result[i]<_result[i+1])
+            {
+                tmp_prob=_result[i];
+                _result[i]=_result[i+1];
+                _result[i+1]=tmp_prob;
+                
+                tmp_index=_index[i];
+                _index[i]=_index[i+1];
+                _index[i+1]=tmp_index;
+            }
+}
+
+
+void MBNet_1000::label_get(uint16_t index, float* prob, const char** name)
+{
+	*prob = _result[index];
+	*name = _names[_index[index]];
+}
+
diff --git a/libraries/KPU/examples/mobilenet_v1/MBNet_1000.h b/libraries/KPU/examples/mobilenet_v1/MBNet_1000.h
new file mode 100644
index 0000000..436f36c
--- /dev/null
+++ b/libraries/KPU/examples/mobilenet_v1/MBNet_1000.h
@@ -0,0 +1,53 @@
+/**
+ * @file MBNet_1000.h
+ * @brief Detect object type
+ * @author Neucrack@sipeed.com
+ */
+
+
+#ifndef __MBNET_1000_H
+#define __MBNET_1000_H
+
+#include "Sipeed_OV2640.h"
+#include "Sipeed_ST7789.h"
+#include <SD.h>
+#include <KPU.h>
+
+#define KMODEL_SIZE (4220 * 1024)
+#define STATISTICS_NUM 5
+
+typedef struct{
+    const char* name;
+    float       sum;
+    bool        updated;
+} statistics_t;
+
+
+class MBNet_1000{
+
+public:
+    MBNet_1000(KPUClass& kpu, Sipeed_ST7789& lcd, Sipeed_OV2640& camera);
+    ~MBNet_1000();
+    int begin(const char* kmodel_name);
+    int detect();
+    void show();
+    const char** _names;
+
+private:
+    KPUClass&      _kpu;
+    Sipeed_ST7789& _lcd;
+    Sipeed_OV2640& _camera;
+    uint8_t        _model[KMODEL_SIZE] __attribute__((aligned(128)));
+    size_t       _count;
+    statistics_t   _statistics[STATISTICS_NUM];
+    float*         _result;
+    uint16_t       _index[1000];
+
+    void label_init();
+    void label_get(uint16_t index, float* prob, const char** name);
+    void label_sort(void);
+};
+
+
+#endif
+
diff --git a/libraries/KPU/examples/mobilenet_v1/mobilenet_v1.ino b/libraries/KPU/examples/mobilenet_v1/mobilenet_v1.ino
new file mode 100644
index 0000000..0241d38
--- /dev/null
+++ b/libraries/KPU/examples/mobilenet_v1/mobilenet_v1.ino
@@ -0,0 +1,54 @@
+
+/**
+ * 
+ * 
+ * Download model here: 
+ *     http://dl.sipeed.com/MAIX/MaixPy/model/mobilenet_0x300000.kfpkg
+ * Unpack it(zip format), get m.kmodel, change name to a short name "m" for example,
+ * put it in SD card at root path
+ * 
+ * 
+ * 
+ */
+
+
+#include <Sipeed_OV2640.h>
+#include <Sipeed_ST7789.h>
+#include "MBNet_1000.h"
+
+
+SPIClass spi_(SPI0); // MUST be SPI0 for Maix series on board LCD
+Sipeed_ST7789 lcd(320, 240, spi_);
+Sipeed_OV2640 camera(224, 224, PIXFORMAT_RGB565);
+KPUClass KPU;
+MBNet_1000 mbnet(KPU, lcd, camera);
+
+const char* kmodel_name = "m";
+
+
+void setup()
+{
+    Serial.begin(115200);
+    while (!Serial) {
+        ; // wait for serial port to connect. Needed for native USB port only
+    }
+    
+    Serial.println("init mobile net, load kmodel from SD card, it may takes a long time");
+    if( mbnet.begin(kmodel_name) != 0)
+    {
+        Serial.println("mobile net init fail");
+        while(1);
+    }
+
+}
+
+void loop()
+{
+    if(mbnet.detect() != 0)
+    {
+        Serial.println("detect object fail");
+        return;
+    }
+    mbnet.show();
+}
+
diff --git a/libraries/KPU/examples/mobilenet_v1/names.cpp b/libraries/KPU/examples/mobilenet_v1/names.cpp
new file mode 100644
index 0000000..c76a703
--- /dev/null
+++ b/libraries/KPU/examples/mobilenet_v1/names.cpp
@@ -0,0 +1,1001 @@
+const char* mbnet_label_name[1000]={"tench, Tinca tinca",
+"goldfish, Carassius auratus",
+"great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias",
+"tiger shark, Galeocerdo cuvieri",
+"hammerhead, hammerhead shark",
+"electric ray, crampfish, numbfish, torpedo",
+"stingray",
+"cock",
+"hen",
+"ostrich, Struthio camelus",
+"brambling, Fringilla montifringilla",
+"goldfinch, Carduelis carduelis",
+"house finch, linnet, Carpodacus mexicanus",
+"junco, snowbird",
+"indigo bunting, indigo finch, indigo bird, Passerina cyanea",
+"robin, American robin, Turdus migratorius",
+"bulbul",
+"jay",
+"magpie",
+"chickadee",
+"water ouzel, dipper",
+"kite",
+"bald eagle, American eagle, Haliaeetus leucocephalus",
+"vulture",
+"great grey owl, great gray owl, Strix nebulosa",
+"European fire salamander, Salamandra salamandra",
+"common newt, Triturus vulgaris",
+"eft",
+"spotted salamander, Ambystoma maculatum",
+"axolotl, mud puppy, Ambystoma mexicanum",
+"bullfrog, Rana catesbeiana",
+"tree frog, tree-frog",
+"tailed frog, bell toad, ribbed toad, tailed toad, Ascaphus trui",
+"loggerhead, loggerhead turtle, Caretta caretta",
+"leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea",
+"mud turtle",
+"terrapin",
+"box turtle, box tortoise",
+"banded gecko",
+"common iguana, iguana, Iguana iguana",
+"American chameleon, anole, Anolis carolinensis",
+"whiptail, whiptail lizard",
+"agama",
+"frilled lizard, Chlamydosaurus kingi",
+"alligator lizard",
+"Gila monster, Heloderma suspectum",
+"green lizard, Lacerta viridis",
+"African chameleon, Chamaeleo chamaeleon",
+"Komodo dragon, Komodo lizard, dragon lizard, giant lizard, Varanus komodoensis",
+"African crocodile, Nile crocodile, Crocodylus niloticus",
+"American alligator, Alligator mississipiensis",
+"triceratops",
+"thunder snake, worm snake, Carphophis amoenus",
+"ringneck snake, ring-necked snake, ring snake",
+"hognose snake, puff adder, sand viper",
+"green snake, grass snake",
+"king snake, kingsnake",
+"garter snake, grass snake",
+"water snake",
+"vine snake",
+"night snake, Hypsiglena torquata",
+"boa constrictor, Constrictor constrictor",
+"rock python, rock snake, Python sebae",
+"Indian cobra, Naja naja",
+"green mamba",
+"sea snake",
+"horned viper, cerastes, sand viper, horned asp, Cerastes cornutus",
+"diamondback, diamondback rattlesnake, Crotalus adamanteus",
+"sidewinder, horned rattlesnake, Crotalus cerastes",
+"trilobite",
+"harvestman, daddy longlegs, Phalangium opilio",
+"scorpion",
+"black and gold garden spider, Argiope aurantia",
+"barn spider, Araneus cavaticus",
+"garden spider, Aranea diademata",
+"black widow, Latrodectus mactans",
+"tarantula",
+"wolf spider, hunting spider",
+"tick",
+"centipede",
+"black grouse",
+"ptarmigan",
+"ruffed grouse, partridge, Bonasa umbellus",
+"prairie chicken, prairie grouse, prairie fowl",
+"peacock",
+"quail",
+"partridge",
+"African grey, African gray, Psittacus erithacus",
+"macaw",
+"sulphur-crested cockatoo, Kakatoe galerita, Cacatua galerita",
+"lorikeet",
+"coucal",
+"bee eater",
+"hornbill",
+"hummingbird",
+"jacamar",
+"toucan",
+"drake",
+"red-breasted merganser, Mergus serrator",
+"goose",
+"black swan, Cygnus atratus",
+"tusker",
+"echidna, spiny anteater, anteater",
+"platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus",
+"wallaby, brush kangaroo",
+"koala, koala bear, kangaroo bear, native bear, Phascolarctos cinereus",
+"wombat",
+"jellyfish",
+"sea anemone, anemone",
+"brain coral",
+"flatworm, platyhelminth",
+"nematode, nematode worm, roundworm",
+"conch",
+"snail",
+"slug",
+"sea slug, nudibranch",
+"chiton, coat-of-mail shell, sea cradle, polyplacophore",
+"chambered nautilus, pearly nautilus, nautilus",
+"Dungeness crab, Cancer magister",
+"rock crab, Cancer irroratus",
+"fiddler crab",
+"king crab, Alaska crab, Alaskan king crab, Alaska king crab, Paralithodes camtschatica",
+"American lobster, Northern lobster, Maine lobster, Homarus americanus",
+"spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish",
+"crayfish, crawfish, crawdad, crawdaddy",
+"hermit crab",
+"isopod",
+"white stork, Ciconia ciconia",
+"black stork, Ciconia nigra",
+"spoonbill",
+"flamingo",
+"little blue heron, Egretta caerulea",
+"American egret, great white heron, Egretta albus",
+"bittern",
+"crane",
+"limpkin, Aramus pictus",
+"European gallinule, Porphyrio porphyrio",
+"American coot, marsh hen, mud hen, water hen, Fulica americana",
+"bustard",
+"ruddy turnstone, Arenaria interpres",
+"red-backed sandpiper, dunlin, Erolia alpina",
+"redshank, Tringa totanus",
+"dowitcher",
+"oystercatcher, oyster catcher",
+"pelican",
+"king penguin, Aptenodytes patagonica",
+"albatross, mollymawk",
+"grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus",
+"killer whale, killer, orca, grampus, sea wolf, Orcinus orca",
+"dugong, Dugong dugon",
+"sea lion",
+"Chihuahua",
+"Japanese spaniel",
+"Maltese dog, Maltese terrier, Maltese",
+"Pekinese, Pekingese, Peke",
+"Shih-Tzu",
+"Blenheim spaniel",
+"papillon",
+"toy terrier",
+"Rhodesian ridgeback",
+"Afghan hound, Afghan",
+"basset, basset hound",
+"beagle",
+"bloodhound, sleuthhound",
+"bluetick",
+"black-and-tan coonhound",
+"Walker hound, Walker foxhound",
+"English foxhound",
+"redbone",
+"borzoi, Russian wolfhound",
+"Irish wolfhound",
+"Italian greyhound",
+"whippet",
+"Ibizan hound, Ibizan Podenco",
+"Norwegian elkhound, elkhound",
+"otterhound, otter hound",
+"Saluki, gazelle hound",
+"Scottish deerhound, deerhound",
+"Weimaraner",
+"Staffordshire bullterrier, Staffordshire bull terrier",
+"American Staffordshire terrier, Staffordshire terrier, American pit bull terrier, pit bull terrier",
+"Bedlington terrier",
+"Border terrier",
+"Kerry blue terrier",
+"Irish terrier",
+"Norfolk terrier",
+"Norwich terrier",
+"Yorkshire terrier",
+"wire-haired fox terrier",
+"Lakeland terrier",
+"Sealyham terrier, Sealyham",
+"Airedale, Airedale terrier",
+"cairn, cairn terrier",
+"Australian terrier",
+"Dandie Dinmont, Dandie Dinmont terrier",
+"Boston bull, Boston terrier",
+"miniature schnauzer",
+"giant schnauzer",
+"standard schnauzer",
+"Scotch terrier, Scottish terrier, Scottie",
+"Tibetan terrier, chrysanthemum dog",
+"silky terrier, Sydney silky",
+"soft-coated wheaten terrier",
+"West Highland white terrier",
+"Lhasa, Lhasa apso",
+"flat-coated retriever",
+"curly-coated retriever",
+"golden retriever",
+"Labrador retriever",
+"Chesapeake Bay retriever",
+"German short-haired pointer",
+"vizsla, Hungarian pointer",
+"English setter",
+"Irish setter, red setter",
+"Gordon setter",
+"Brittany spaniel",
+"clumber, clumber spaniel",
+"English springer, English springer spaniel",
+"Welsh springer spaniel",
+"cocker spaniel, English cocker spaniel, cocker",
+"Sussex spaniel",
+"Irish water spaniel",
+"kuvasz",
+"schipperke",
+"groenendael",
+"malinois",
+"briard",
+"kelpie",
+"komondor",
+"Old English sheepdog, bobtail",
+"Shetland sheepdog, Shetland sheep dog, Shetland",
+"collie",
+"Border collie",
+"Bouvier des Flandres, Bouviers des Flandres",
+"Rottweiler",
+"German shepherd, German shepherd dog, German police dog, alsatian",
+"Doberman, Doberman pinscher",
+"miniature pinscher",
+"Greater Swiss Mountain dog",
+"Bernese mountain dog",
+"Appenzeller",
+"EntleBucher",
+"boxer",
+"bull mastiff",
+"Tibetan mastiff",
+"French bulldog",
+"Great Dane",
+"Saint Bernard, St Bernard",
+"Eskimo dog, husky",
+"malamute, malemute, Alaskan malamute",
+"Siberian husky",
+"dalmatian, coach dog, carriage dog",
+"affenpinscher, monkey pinscher, monkey dog",
+"basenji",
+"pug, pug-dog",
+"Leonberg",
+"Newfoundland, Newfoundland dog",
+"Great Pyrenees",
+"Samoyed, Samoyede",
+"Pomeranian",
+"chow, chow chow",
+"keeshond",
+"Brabancon griffon",
+"Pembroke, Pembroke Welsh corgi",
+"Cardigan, Cardigan Welsh corgi",
+"toy poodle",
+"miniature poodle",
+"standard poodle",
+"Mexican hairless",
+"timber wolf, grey wolf, gray wolf, Canis lupus",
+"white wolf, Arctic wolf, Canis lupus tundrarum",
+"red wolf, maned wolf, Canis rufus, Canis niger",
+"coyote, prairie wolf, brush wolf, Canis latrans",
+"dingo, warrigal, warragal, Canis dingo",
+"dhole, Cuon alpinus",
+"African hunting dog, hyena dog, Cape hunting dog, Lycaon pictus",
+"hyena, hyaena",
+"red fox, Vulpes vulpes",
+"kit fox, Vulpes macrotis",
+"Arctic fox, white fox, Alopex lagopus",
+"grey fox, gray fox, Urocyon cinereoargenteus",
+"tabby, tabby cat",
+"tiger cat",
+"Persian cat",
+"Siamese cat, Siamese",
+"Egyptian cat",
+"cougar, puma, catamount, mountain lion, painter, panther, Felis concolor",
+"lynx, catamount",
+"leopard, Panthera pardus",
+"snow leopard, ounce, Panthera uncia",
+"jaguar, panther, Panthera onca, Felis onca",
+"lion, king of beasts, Panthera leo",
+"tiger, Panthera tigris",
+"cheetah, chetah, Acinonyx jubatus",
+"brown bear, bruin, Ursus arctos",
+"American black bear, black bear, Ursus americanus, Euarctos americanus",
+"ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus",
+"sloth bear, Melursus ursinus, Ursus ursinus",
+"mongoose",
+"meerkat, mierkat",
+"tiger beetle",
+"ladybug, ladybeetle, lady beetle, ladybird, ladybird beetle",
+"ground beetle, carabid beetle",
+"long-horned beetle, longicorn, longicorn beetle",
+"leaf beetle, chrysomelid",
+"dung beetle",
+"rhinoceros beetle",
+"weevil",
+"fly",
+"bee",
+"ant, emmet, pismire",
+"grasshopper, hopper",
+"cricket",
+"walking stick, walkingstick, stick insect",
+"cockroach, roach",
+"mantis, mantid",
+"cicada, cicala",
+"leafhopper",
+"lacewing, lacewing fly",
+"dragonfly, darning needle, devil's darning needle, sewing needle, snake feeder, snake doctor, mosquito hawk, skeeter hawk",
+"damselfly",
+"admiral",
+"ringlet, ringlet butterfly",
+"monarch, monarch butterfly, milkweed butterfly, Danaus plexippus",
+"cabbage butterfly",
+"sulphur butterfly, sulfur butterfly",
+"lycaenid, lycaenid butterfly",
+"starfish, sea star",
+"sea urchin",
+"sea cucumber, holothurian",
+"wood rabbit, cottontail, cottontail rabbit",
+"hare",
+"Angora, Angora rabbit",
+"hamster",
+"porcupine, hedgehog",
+"fox squirrel, eastern fox squirrel, Sciurus niger",
+"marmot",
+"beaver",
+"guinea pig, Cavia cobaya",
+"sorrel",
+"zebra",
+"hog, pig, grunter, squealer, Sus scrofa",
+"wild boar, boar, Sus scrofa",
+"warthog",
+"hippopotamus, hippo, river horse, Hippopotamus amphibius",
+"ox",
+"water buffalo, water ox, Asiatic buffalo, Bubalus bubalis",
+"bison",
+"ram, tup",
+"bighorn, bighorn sheep, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep, Ovis canadensis",
+"ibex, Capra ibex",
+"hartebeest",
+"impala, Aepyceros melampus",
+"gazelle",
+"Arabian camel, dromedary, Camelus dromedarius",
+"llama",
+"weasel",
+"mink",
+"polecat, fitch, foulmart, foumart, Mustela putorius",
+"black-footed ferret, ferret, Mustela nigripes",
+"otter",
+"skunk, polecat, wood pussy",
+"badger",
+"armadillo",
+"three-toed sloth, ai, Bradypus tridactylus",
+"orangutan, orang, orangutang, Pongo pygmaeus",
+"gorilla, Gorilla gorilla",
+"chimpanzee, chimp, Pan troglodytes",
+"gibbon, Hylobates lar",
+"siamang, Hylobates syndactylus, Symphalangus syndactylus",
+"guenon, guenon monkey",
+"patas, hussar monkey, Erythrocebus patas",
+"baboon",
+"macaque",
+"langur",
+"colobus, colobus monkey",
+"proboscis monkey, Nasalis larvatus",
+"marmoset",
+"capuchin, ringtail, Cebus capucinus",
+"howler monkey, howler",
+"titi, titi monkey",
+"spider monkey, Ateles geoffroyi",
+"squirrel monkey, Saimiri sciureus",
+"Madagascar cat, ring-tailed lemur, Lemur catta",
+"indri, indris, Indri indri, Indri brevicaudatus",
+"Indian elephant, Elephas maximus",
+"African elephant, Loxodonta africana",
+"lesser panda, red panda, panda, bear cat, cat bear, Ailurus fulgens",
+"giant panda, panda, panda bear, coon bear, Ailuropoda melanoleuca",
+"barracouta, snoek",
+"eel",
+"coho, cohoe, coho salmon, blue jack, silver salmon, Oncorhynchus kisutch",
+"rock beauty, Holocanthus tricolor",
+"anemone fish",
+"sturgeon",
+"gar, garfish, garpike, billfish, Lepisosteus osseus",
+"lionfish",
+"puffer, pufferfish, blowfish, globefish",
+"abacus",
+"abaya",
+"academic gown, academic robe, judge's robe",
+"accordion, piano accordion, squeeze box",
+"acoustic guitar",
+"aircraft carrier, carrier, flattop, attack aircraft carrier",
+"airliner",
+"airship, dirigible",
+"altar",
+"ambulance",
+"amphibian, amphibious vehicle",
+"analog clock",
+"apiary, bee house",
+"apron",
+"ashcan, trash can, garbage can, wastebin, ash bin, ash-bin, ashbin, dustbin, trash barrel, trash bin",
+"assault rifle, assault gun",
+"backpack, back pack, knapsack, packsack, rucksack, haversack",
+"bakery, bakeshop, bakehouse",
+"balance beam, beam",
+"balloon",
+"ballpoint, ballpoint pen, ballpen, Biro",
+"Band Aid",
+"banjo",
+"bannister, banister, balustrade, balusters, handrail",
+"barbell",
+"barber chair",
+"barbershop",
+"barn",
+"barometer",
+"barrel, cask",
+"barrow, garden cart, lawn cart, wheelbarrow",
+"baseball",
+"basketball",
+"bassinet",
+"bassoon",
+"bathing cap, swimming cap",
+"bath towel",
+"bathtub, bathing tub, bath, tub",
+"beach wagon, station wagon, wagon, estate car, beach waggon, station waggon, waggon",
+"beacon, lighthouse, beacon light, pharos",
+"beaker",
+"bearskin, busby, shako",
+"beer bottle",
+"beer glass",
+"bell cote, bell cot",
+"bib",
+"bicycle-built-for-two, tandem bicycle, tandem",
+"bikini, two-piece",
+"binder, ring-binder",
+"binoculars, field glasses, opera glasses",
+"birdhouse",
+"boathouse",
+"bobsled, bobsleigh, bob",
+"bolo tie, bolo, bola tie, bola",
+"bonnet, poke bonnet",
+"bookcase",
+"bookshop, bookstore, bookstall",
+"bottlecap",
+"bow",
+"bow tie, bow-tie, bowtie",
+"brass, memorial tablet, plaque",
+"brassiere, bra, bandeau",
+"breakwater, groin, groyne, mole, bulwark, seawall, jetty",
+"breastplate, aegis, egis",
+"broom",
+"bucket, pail",
+"buckle",
+"bulletproof vest",
+"bullet train, bullet",
+"butcher shop, meat market",
+"cab, hack, taxi, taxicab",
+"caldron, cauldron",
+"candle, taper, wax light",
+"cannon",
+"canoe",
+"can opener, tin opener",
+"cardigan",
+"car mirror",
+"carousel, carrousel, merry-go-round, roundabout, whirligig",
+"carpenter's kit, tool kit",
+"carton",
+"car wheel",
+"cash machine, cash dispenser, automated teller machine, automatic teller machine, automated teller, automatic teller, ATM",
+"cassette",
+"cassette player",
+"castle",
+"catamaran",
+"CD player",
+"cello, violoncello",
+"cellular telephone, cellular phone, cellphone, cell, mobile phone",
+"chain",
+"chainlink fence",
+"chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour",
+"chain saw, chainsaw",
+"chest",
+"chiffonier, commode",
+"chime, bell, gong",
+"china cabinet, china closet",
+"Christmas stocking",
+"church, church building",
+"cinema, movie theater, movie theatre, movie house, picture palace",
+"cleaver, meat cleaver, chopper",
+"cliff dwelling",
+"cloak",
+"clog, geta, patten, sabot",
+"cocktail shaker",
+"coffee mug",
+"coffeepot",
+"coil, spiral, volute, whorl, helix",
+"combination lock",
+"computer keyboard, keypad",
+"confectionery, confectionary, candy store",
+"container ship, containership, container vessel",
+"convertible",
+"corkscrew, bottle screw",
+"cornet, horn, trumpet, trump",
+"cowboy boot",
+"cowboy hat, ten-gallon hat",
+"cradle",
+"crane",
+"crash helmet",
+"crate",
+"crib, cot",
+"Crock Pot",
+"croquet ball",
+"crutch",
+"cuirass",
+"dam, dike, dyke",
+"desk",
+"desktop computer",
+"dial telephone, dial phone",
+"diaper, nappy, napkin",
+"digital clock",
+"digital watch",
+"dining table, board",
+"dishrag, dishcloth",
+"dishwasher, dish washer, dishwashing machine",
+"disk brake, disc brake",
+"dock, dockage, docking facility",
+"dogsled, dog sled, dog sleigh",
+"dome",
+"doormat, welcome mat",
+"drilling platform, offshore rig",
+"drum, membranophone, tympan",
+"drumstick",
+"dumbbell",
+"Dutch oven",
+"electric fan, blower",
+"electric guitar",
+"electric locomotive",
+"entertainment center",
+"envelope",
+"espresso maker",
+"face powder",
+"feather boa, boa",
+"file, file cabinet, filing cabinet",
+"fireboat",
+"fire engine, fire truck",
+"fire screen, fireguard",
+"flagpole, flagstaff",
+"flute, transverse flute",
+"folding chair",
+"football helmet",
+"forklift",
+"fountain",
+"fountain pen",
+"four-poster",
+"freight car",
+"French horn, horn",
+"frying pan, frypan, skillet",
+"fur coat",
+"garbage truck, dustcart",
+"gasmask, respirator, gas helmet",
+"gas pump, gasoline pump, petrol pump, island dispenser",
+"goblet",
+"go-kart",
+"golf ball",
+"golfcart, golf cart",
+"gondola",
+"gong, tam-tam",
+"gown",
+"grand piano, grand",
+"greenhouse, nursery, glasshouse",
+"grille, radiator grille",
+"grocery store, grocery, food market, market",
+"guillotine",
+"hair slide",
+"hair spray",
+"half track",
+"hammer",
+"hamper",
+"hand blower, blow dryer, blow drier, hair dryer, hair drier",
+"hand-held computer, hand-held microcomputer",
+"handkerchief, hankie, hanky, hankey",
+"hard disc, hard disk, fixed disk",
+"harmonica, mouth organ, harp, mouth harp",
+"harp",
+"harvester, reaper",
+"hatchet",
+"holster",
+"home theater, home theatre",
+"honeycomb",
+"hook, claw",
+"hoopskirt, crinoline",
+"horizontal bar, high bar",
+"horse cart, horse-cart",
+"hourglass",
+"iPod",
+"iron, smoothing iron",
+"jack-o'-lantern",
+"jean, blue jean, denim",
+"jeep, landrover",
+"jersey, T-shirt, tee shirt",
+"jigsaw puzzle",
+"jinrikisha, ricksha, rickshaw",
+"joystick",
+"kimono",
+"knee pad",
+"knot",
+"lab coat, laboratory coat",
+"ladle",
+"lampshade, lamp shade",
+"laptop, laptop computer",
+"lawn mower, mower",
+"lens cap, lens cover",
+"letter opener, paper knife, paperknife",
+"library",
+"lifeboat",
+"lighter, light, igniter, ignitor",
+"limousine, limo",
+"liner, ocean liner",
+"lipstick, lip rouge",
+"Loafer",
+"lotion",
+"loudspeaker, speaker, speaker unit, loudspeaker system, speaker system",
+"loupe, jeweler's loupe",
+"lumbermill, sawmill",
+"magnetic compass",
+"mailbag, postbag",
+"mailbox, letter box",
+"maillot",
+"maillot, tank suit",
+"manhole cover",
+"maraca",
+"marimba, xylophone",
+"mask",
+"matchstick",
+"maypole",
+"maze, labyrinth",
+"measuring cup",
+"medicine chest, medicine cabinet",
+"megalith, megalithic structure",
+"microphone, mike",
+"microwave, microwave oven",
+"military uniform",
+"milk can",
+"minibus",
+"miniskirt, mini",
+"minivan",
+"missile",
+"mitten",
+"mixing bowl",
+"mobile home, manufactured home",
+"Model T",
+"modem",
+"monastery",
+"monitor",
+"moped",
+"mortar",
+"mortarboard",
+"mosque",
+"mosquito net",
+"motor scooter, scooter",
+"mountain bike, all-terrain bike, off-roader",
+"mountain tent",
+"mouse, computer mouse",
+"mousetrap",
+"moving van",
+"muzzle",
+"nail",
+"neck brace",
+"necklace",
+"nipple",
+"notebook, notebook computer",
+"obelisk",
+"oboe, hautboy, hautbois",
+"ocarina, sweet potato",
+"odometer, hodometer, mileometer, milometer",
+"oil filter",
+"organ, pipe organ",
+"oscilloscope, scope, cathode-ray oscilloscope, CRO",
+"overskirt",
+"oxcart",
+"oxygen mask",
+"packet",
+"paddle, boat paddle",
+"paddlewheel, paddle wheel",
+"padlock",
+"paintbrush",
+"pajama, pyjama, pj's, jammies",
+"palace",
+"panpipe, pandean pipe, syrinx",
+"paper towel",
+"parachute, chute",
+"parallel bars, bars",
+"park bench",
+"parking meter",
+"passenger car, coach, carriage",
+"patio, terrace",
+"pay-phone, pay-station",
+"pedestal, plinth, footstall",
+"pencil box, pencil case",
+"pencil sharpener",
+"perfume, essence",
+"Petri dish",
+"photocopier",
+"pick, plectrum, plectron",
+"pickelhaube",
+"picket fence, paling",
+"pickup, pickup truck",
+"pier",
+"piggy bank, penny bank",
+"pill bottle",
+"pillow",
+"ping-pong ball",
+"pinwheel",
+"pirate, pirate ship",
+"pitcher, ewer",
+"plane, carpenter's plane, woodworking plane",
+"planetarium",
+"plastic bag",
+"plate rack",
+"plow, plough",
+"plunger, plumber's helper",
+"Polaroid camera, Polaroid Land camera",
+"pole",
+"police van, police wagon, paddy wagon, patrol wagon, wagon, black Maria",
+"poncho",
+"pool table, billiard table, snooker table",
+"pop bottle, soda bottle",
+"pot, flowerpot",
+"potter's wheel",
+"power drill",
+"prayer rug, prayer mat",
+"printer",
+"prison, prison house",
+"projectile, missile",
+"projector",
+"puck, hockey puck",
+"punching bag, punch bag, punching ball, punchball",
+"purse",
+"quill, quill pen",
+"quilt, comforter, comfort, puff",
+"racer, race car, racing car",
+"racket, racquet",
+"radiator",
+"radio, wireless",
+"radio telescope, radio reflector",
+"rain barrel",
+"recreational vehicle, RV, R.V.",
+"reel",
+"reflex camera",
+"refrigerator, icebox",
+"remote control, remote",
+"restaurant, eating house, eating place, eatery",
+"revolver, six-gun, six-shooter",
+"rifle",
+"rocking chair, rocker",
+"rotisserie",
+"rubber eraser, rubber, pencil eraser",
+"rugby ball",
+"rule, ruler",
+"running shoe",
+"safe",
+"safety pin",
+"saltshaker, salt shaker",
+"sandal",
+"sarong",
+"sax, saxophone",
+"scabbard",
+"scale, weighing machine",
+"school bus",
+"schooner",
+"scoreboard",
+"screen, CRT screen",
+"screw",
+"screwdriver",
+"seat belt, seatbelt",
+"sewing machine",
+"shield, buckler",
+"shoe shop, shoe-shop, shoe store",
+"shoji",
+"shopping basket",
+"shopping cart",
+"shovel",
+"shower cap",
+"shower curtain",
+"ski",
+"ski mask",
+"sleeping bag",
+"slide rule, slipstick",
+"sliding door",
+"slot, one-armed bandit",
+"snorkel",
+"snowmobile",
+"snowplow, snowplough",
+"soap dispenser",
+"soccer ball",
+"sock",
+"solar dish, solar collector, solar furnace",
+"sombrero",
+"soup bowl",
+"space bar",
+"space heater",
+"space shuttle",
+"spatula",
+"speedboat",
+"spider web, spider's web",
+"spindle",
+"sports car, sport car",
+"spotlight, spot",
+"stage",
+"steam locomotive",
+"steel arch bridge",
+"steel drum",
+"stethoscope",
+"stole",
+"stone wall",
+"stopwatch, stop watch",
+"stove",
+"strainer",
+"streetcar, tram, tramcar, trolley, trolley car",
+"stretcher",
+"studio couch, day bed",
+"stupa, tope",
+"submarine, pigboat, sub, U-boat",
+"suit, suit of clothes",
+"sundial",
+"sunglass",
+"sunglasses, dark glasses, shades",
+"sunscreen, sunblock, sun blocker",
+"suspension bridge",
+"swab, swob, mop",
+"sweatshirt",
+"swimming trunks, bathing trunks",
+"swing",
+"switch, electric switch, electrical switch",
+"syringe",
+"table lamp",
+"tank, army tank, armored combat vehicle, armoured combat vehicle",
+"tape player",
+"teapot",
+"teddy, teddy bear",
+"television, television system",
+"tennis ball",
+"thatch, thatched roof",
+"theater curtain, theatre curtain",
+"thimble",
+"thresher, thrasher, threshing machine",
+"throne",
+"tile roof",
+"toaster",
+"tobacco shop, tobacconist shop, tobacconist",
+"toilet seat",
+"torch",
+"totem pole",
+"tow truck, tow car, wrecker",
+"toyshop",
+"tractor",
+"trailer truck, tractor trailer, trucking rig, rig, articulated lorry, semi",
+"tray",
+"trench coat",
+"tricycle, trike, velocipede",
+"trimaran",
+"tripod",
+"triumphal arch",
+"trolleybus, trolley coach, trackless trolley",
+"trombone",
+"tub, vat",
+"turnstile",
+"typewriter keyboard",
+"umbrella",
+"unicycle, monocycle",
+"upright, upright piano",
+"vacuum, vacuum cleaner",
+"vase",
+"vault",
+"velvet",
+"vending machine",
+"vestment",
+"viaduct",
+"violin, fiddle",
+"volleyball",
+"waffle iron",
+"wall clock",
+"wallet, billfold, notecase, pocketbook",
+"wardrobe, closet, press",
+"warplane, military plane",
+"washbasin, handbasin, washbowl, lavabo, wash-hand basin",
+"washer, automatic washer, washing machine",
+"water bottle",
+"water jug",
+"water tower",
+"whiskey jug",
+"whistle",
+"wig",
+"window screen",
+"window shade",
+"Windsor tie",
+"wine bottle",
+"wing",
+"wok",
+"wooden spoon",
+"wool, woolen, woollen",
+"worm fence, snake fence, snake-rail fence, Virginia fence",
+"wreck",
+"yawl",
+"yurt",
+"web site, website, internet site, site",
+"comic book",
+"crossword puzzle, crossword",
+"street sign",
+"traffic light, traffic signal, stoplight",
+"book jacket, dust cover, dust jacket, dust wrapper",
+"menu",
+"plate",
+"guacamole",
+"consomme",
+"hot pot, hotpot",
+"trifle",
+"ice cream, icecream",
+"ice lolly, lolly, lollipop, popsicle",
+"French loaf",
+"bagel, beigel",
+"pretzel",
+"cheeseburger",
+"hotdog, hot dog, red hot",
+"mashed potato",
+"head cabbage",
+"broccoli",
+"cauliflower",
+"zucchini, courgette",
+"spaghetti squash",
+"acorn squash",
+"butternut squash",
+"cucumber, cuke",
+"artichoke, globe artichoke",
+"bell pepper",
+"cardoon",
+"mushroom",
+"Granny Smith",
+"strawberry",
+"orange",
+"lemon",
+"fig",
+"pineapple, ananas",
+"banana",
+"jackfruit, jak, jack",
+"custard apple",
+"pomegranate",
+"hay",
+"carbonara",
+"chocolate sauce, chocolate syrup",
+"dough",
+"meat loaf, meatloaf",
+"pizza, pizza pie",
+"potpie",
+"burrito",
+"red wine",
+"espresso",
+"cup",
+"eggnog",
+"alp",
+"bubble",
+"cliff, drop, drop-off",
+"coral reef",
+"geyser",
+"lakeside, lakeshore",
+"promontory, headland, head, foreland",
+"sandbar, sand bar",
+"seashore, coast, seacoast, sea-coast",
+"valley, vale",
+"volcano",
+"ballplayer, baseball player",
+"groom, bridegroom",
+"scuba diver",
+"rapeseed",
+"daisy",
+"yellow lady's slipper, yellow lady-slipper, Cypripedium calceolus, Cypripedium parviflorum",
+"corn",
+"acorn",
+"hip, rose hip, rosehip",
+"buckeye, horse chestnut, conker",
+"coral fungus",
+"agaric",
+"gyromitra",
+"stinkhorn, carrion fungus",
+"earthstar",
+"hen-of-the-woods, hen of the woods, Polyporus frondosus, Grifola frondosa",
+"bolete",
+"ear, spike, capitulum",
+"toilet tissue, toilet paper, bathroom tissue",
+};
diff --git a/libraries/KPU/examples/mobilenet_v1/names.h b/libraries/KPU/examples/mobilenet_v1/names.h
new file mode 100644
index 0000000..0a61ad1
--- /dev/null
+++ b/libraries/KPU/examples/mobilenet_v1/names.h
@@ -0,0 +1,7 @@
+#ifndef __MBNET_NAMES_H
+#define __MBNET_NAMES_H
+
+extern const char* mbnet_label_name[];
+
+#endif
+
diff --git a/libraries/KPU/keywords.txt b/libraries/KPU/keywords.txt
new file mode 100644
index 0000000..e6d315e
--- /dev/null
+++ b/libraries/KPU/keywords.txt
@@ -0,0 +1,26 @@
+#######################################
+# Syntax Coloring Map SD
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+KPUClass	KEYWORD1	
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+begin	KEYWORD2
+end  	KEYWORD2
+forward	KEYWORD2
+isForwardOk	KEYWORD2
+getResult	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+KPU_ERROR_BUSY    	LITERAL1
+KPU_ERROR_BAD_MODEL	LITERAL1
+KPU_ERROR_MODEL_VERSION	LITERAL1
+KPU_ERROR_NONE   	LITERAL1
diff --git a/libraries/KPU/library.properties b/libraries/KPU/library.properties
new file mode 100644
index 0000000..abe87f7
--- /dev/null
+++ b/libraries/KPU/library.properties
@@ -0,0 +1,9 @@
+name=KPU
+version=1.0.0
+author= Neucrack Sipeed
+maintainer=Sipeed <support@sipeed.com>
+sentence=KPU API of k210
+paragraph=KPU API of k210
+category=Other
+url=
+architectures=k210
diff --git a/libraries/KPU/src/KPU.cpp b/libraries/KPU/src/KPU.cpp
new file mode 100644
index 0000000..bf507a1
--- /dev/null
+++ b/libraries/KPU/src/KPU.cpp
@@ -0,0 +1,74 @@
+
+
+#include "KPU.h"
+#include "sysctl.h"
+
+
+#define AI_STATUS_IDLE 0
+#define AI_STATUS_BUSY 1
+#define AI_STATUS_OK   2
+
+
+static volatile uint32_t g_ai_done_flag = AI_STATUS_IDLE;
+
+KPUClass::KPUClass()
+:_flagGotResult(true)
+{
+
+}
+
+KPUClass::~KPUClass()
+{
+    end();
+}
+
+int  KPUClass::begin(uint8_t* model)
+{
+    sysctl_clock_enable(SYSCTL_CLOCK_AI);
+    if (kpu_load_kmodel(&_task, model) != 0)
+        return KPU_ERROR_BAD_MODEL;
+    return KPU_ERROR_NONE;
+}
+
+void KPUClass::end()
+{
+    sysctl_clock_disable(SYSCTL_CLOCK_AI);
+}
+
+extern "C" {
+    static void ai_done(void* userdata)
+    {
+        bool* user_used = (bool*)userdata;
+        g_ai_done_flag = AI_STATUS_OK;
+        *user_used = false;
+    }
+}
+
+int  KPUClass::forward(uint8_t* imgSrc, uint8_t dmaCh)
+{
+    if(g_ai_done_flag == AI_STATUS_BUSY)
+        return KPU_ERROR_BUSY;
+    g_ai_done_flag = AI_STATUS_BUSY;
+    if (kpu_run_kmodel(&_task, imgSrc, (dmac_channel_number_t)dmaCh, ai_done, (void*)&_flagGotResult) != 0)
+    {
+        g_ai_done_flag = AI_STATUS_IDLE;
+        return KPU_ERROR_BAD_MODEL;
+    }
+    return KPU_ERROR_NONE;
+}
+
+bool KPUClass::isForwardOk()
+{
+    return g_ai_done_flag==AI_STATUS_OK;
+}
+
+int  KPUClass::getResult(uint8_t**data, size_t* count, uint32_t startIndex )
+{
+    _flagGotResult = true;
+    kpu_get_output(&_task, startIndex, data, count);
+    return KPU_ERROR_NONE;
+}
+
+
+
+
diff --git a/libraries/KPU/src/KPU.h b/libraries/KPU/src/KPU.h
new file mode 100644
index 0000000..8ab2a42
--- /dev/null
+++ b/libraries/KPU/src/KPU.h
@@ -0,0 +1,42 @@
+
+#ifndef __MOBILENET_V1_H
+#define __MOBILENET_V1_H
+
+extern "C" {
+#include "kpu.h"
+}
+
+typedef enum{
+    KPU_ERROR_BUSY          = -3,
+    KPU_ERROR_BAD_MODEL     = -2,
+    KPU_ERROR_MODEL_VERSION = -1,
+    KPU_ERROR_NONE          = 0,
+} KPU_Error_t;
+
+
+class KPUClass{
+
+public:
+    KPUClass();
+    ~KPUClass();
+    int  begin(uint8_t* model);
+    void end();
+    /**
+     * @param imgSrc RGB888 image source
+     * @param dmaCh [0,5)
+     */
+    int  forward(uint8_t* imgSrc, uint8_t dmaCh=0);
+    bool isForwardOk();
+    int  getResult(uint8_t**data, size_t* count, uint32_t startIndex = 0);
+
+
+private:
+    kpu_model_context_t          _task;
+    bool  _flagGotResult;
+
+
+};
+
+
+#endif
+
diff --git a/libraries/SD/src/File.cpp b/libraries/SD/src/File.cpp
index 20d9f70..eab6ab7 100644
--- a/libraries/SD/src/File.cpp
+++ b/libraries/SD/src/File.cpp
@@ -95,6 +95,22 @@ int File::read(void *buf, uint16_t nbyte) {
   return 0;
 }
 
+long File::read(void *buf, uint32_t nbyte) {
+  if (!_file) 
+    return 0;
+  uint32_t bytesToRead = nbyte;
+  uint16_t ret, readBytesOnece;
+  while(bytesToRead)
+  {
+    readBytesOnece = (bytesToRead>65000) ? 65000 : bytesToRead;
+    ret = (uint16_t)_file->read(buf+(nbyte-bytesToRead), readBytesOnece);
+    if(ret == 0xffff)
+      return -1;
+    bytesToRead -= ret;
+  }
+  return nbyte;
+}
+
 int File::available() {
   if (! _file) return 0;
 
diff --git a/libraries/SD/src/SD.h b/libraries/SD/src/SD.h
index b0ae4fd..14eafa4 100644
--- a/libraries/SD/src/SD.h
+++ b/libraries/SD/src/SD.h
@@ -40,6 +40,7 @@ public:
   virtual int available();
   virtual void flush();
   int read(void *buf, uint16_t nbyte);
+  long read(void *buf, uint32_t nbyte);
   boolean seek(uint32_t pos);
   uint32_t position();
   uint32_t size();
diff --git a/libraries/Sipeed_OV2640/src/Sipeed_OV2640.cpp b/libraries/Sipeed_OV2640/src/Sipeed_OV2640.cpp
index 618f6c6..f784e82 100644
--- a/libraries/Sipeed_OV2640/src/Sipeed_OV2640.cpp
+++ b/libraries/Sipeed_OV2640/src/Sipeed_OV2640.cpp
@@ -606,6 +606,19 @@ _id(0)
     configASSERT(pixFormat == PIXFORMAT_RGB565 || pixFormat==PIXFORMAT_YUV422);
 }
 
+
+
+Sipeed_OV2640::Sipeed_OV2640(uint16_t width, uint16_t height, pixformat_t pixFormat)
+:Camera(width, height, pixFormat),
+_dataBuffer(NULL), _aiBuffer(NULL),
+_resetPoliraty(ACTIVE_HIGH), _pwdnPoliraty(ACTIVE_HIGH),
+_slaveAddr(0x00),
+_id(0)
+{
+    configASSERT(pixFormat == PIXFORMAT_RGB565 || pixFormat==PIXFORMAT_YUV422);
+}
+
+
 Sipeed_OV2640::~Sipeed_OV2640()
 {
     end();
diff --git a/libraries/Sipeed_OV2640/src/Sipeed_OV2640.h b/libraries/Sipeed_OV2640/src/Sipeed_OV2640.h
index a52b876..e7541d4 100644
--- a/libraries/Sipeed_OV2640/src/Sipeed_OV2640.h
+++ b/libraries/Sipeed_OV2640/src/Sipeed_OV2640.h
@@ -37,6 +37,7 @@ class Sipeed_OV2640 : public Camera{
 
 public:
     Sipeed_OV2640(framesize_t frameSize = FRAMESIZE_QVGA, pixformat_t pixFormat = PIXFORMAT_RGB565);
+    Sipeed_OV2640(uint16_t width, uint16_t height, pixformat_t pixFormat = PIXFORMAT_RGB565);
     ~Sipeed_OV2640();
     
     virtual bool begin();
@@ -51,6 +52,8 @@ public:
      *         If pixels format is RGB565: return RGB565 pixels with every uint16_t one pixel, e.g. RED: 0xF800
      */
     virtual uint8_t* snapshot();
+    virtual uint16_t* getRGB565(){ return (uint16_t*)_dataBuffer; };
+    virtual uint8_t* getRGB888(){ return _aiBuffer; };
     virtual void setRotaion(uint8_t rotation);
     virtual void setInvert(bool invert);
 
diff --git a/libraries/Sipeed_ST7789/src/lcd.c b/libraries/Sipeed_ST7789/src/lcd.c
index 9faaf1b..cdea5a5 100644
--- a/libraries/Sipeed_ST7789/src/lcd.c
+++ b/libraries/Sipeed_ST7789/src/lcd.c
@@ -174,7 +174,7 @@ void lcd_set_area(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
 void lcd_draw_point(uint16_t x, uint16_t y, uint16_t color)
 {
     lcd_set_area(x, y, x, y);
-    tft_write_byte((uint8_t*)&color, 2);
+    tft_write_half(&color, 1);
 }
 
 void lcd_clear(uint16_t color)
@@ -204,13 +204,13 @@ void lcd_draw_rectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint
         *p++ = data;
 
     lcd_set_area(x1, y1, x2, y1 + width - 1);
-    tft_write_byte((uint8_t*)data_buf, ((x2 - x1 + 1) * width + 1) * 2);
+    tft_write_word(data_buf, ((x2 - x1 + 1) * width + 1) / 2);
     lcd_set_area(x1, y2 - width + 1, x2, y2);
-    tft_write_byte((uint8_t*)data_buf, ((x2 - x1 + 1) * width + 1) * 2);
+    tft_write_word(data_buf, ((x2 - x1 + 1) * width + 1) / 2);
     lcd_set_area(x1, y1, x1 + width - 1, y2);
-    tft_write_byte((uint8_t*)data_buf, ((y2 - y1 + 1) * width + 1) * 2);
+    tft_write_word(data_buf, ((y2 - y1 + 1) * width + 1) / 2);
     lcd_set_area(x2 - width + 1, y1, x2, y2);
-    tft_write_byte((uint8_t*)data_buf, ((y2 - y1 + 1) * width + 1) * 2);
+    tft_write_word(data_buf, ((y2 - y1 + 1) * width + 1) / 2);
 }
 
 #define SWAP_16(x) ((x >> 8 & 0xff) | (x << 8))
diff --git a/libraries/Sipeed_ST7789/src/st7789.c b/libraries/Sipeed_ST7789/src/st7789.c
index 26c6faa..a77d2a8 100644
--- a/libraries/Sipeed_ST7789/src/st7789.c
+++ b/libraries/Sipeed_ST7789/src/st7789.c
@@ -73,7 +73,7 @@ void tft_write_byte(uint8_t *data_buf, uint32_t length)
 {
     set_dcx_data();
     spi_init(g_spi_num, SPI_WORK_MODE_0, SPI_FF_OCTAL, 8, 0);
-    spi_init_non_standard(g_spi_num, 0 /*instrction length*/, 8 /*address length*/, 0 /*wait cycles*/,
+    spi_init_non_standard(g_spi_num, 8 /*instrction length*/, 0 /*address length*/, 0 /*wait cycles*/,
                           SPI_AITM_AS_FRAME_FORMAT /*spi address trans mode*/);
     spi_send_data_normal_dma(g_dma_ch, g_spi_num, g_ss, data_buf, length, SPI_TRANS_CHAR);
 }
@@ -82,7 +82,7 @@ void tft_write_half(uint16_t *data_buf, uint32_t length)
 {
     set_dcx_data();
     spi_init(g_spi_num, SPI_WORK_MODE_0, SPI_FF_OCTAL, 16, 0);
-    spi_init_non_standard(g_spi_num, 0 /*instrction length*/, 16 /*address length*/, 0 /*wait cycles*/,
+    spi_init_non_standard(g_spi_num, 16 /*instrction length*/, 0 /*address length*/, 0 /*wait cycles*/,
                           SPI_AITM_AS_FRAME_FORMAT /*spi address trans mode*/);
     spi_send_data_normal_dma(g_dma_ch, g_spi_num, g_ss, data_buf, length, SPI_TRANS_SHORT);
 }