David Rimer / VC0706CameraShield

VC0706 driver for radio shack camera shield

Dependencies:   MODSERIAL

Sample Code

#include "mbed.h"
#include "SDFileSystem.h"
#include "CameraShield.h"
#include <stdio.h>


unsigned char VC0706_rx_buffer[80];
    

SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd", PTE6, SDFileSystem::SWITCH_POS_NO, 25000000); // MOSI, MISO, SCLK, SSEL
CameraShield camera(PTC17, PTC16);


void CapturePhoto()
{
    uint32_t    frame_length = camera.VC0706_get_frame_buffer_length();        //get frame buffer length
    uint32_t    vc_frame_address = READ_DATA_BLOCK_NO;    
        
    FILE* camFile = fopen("/sd/temp.jpg", "w");
        
    while(vc_frame_address<frame_length)
    {   
        camera.VC0706_read_frame_buffer(vc_frame_address - READ_DATA_BLOCK_NO, READ_DATA_BLOCK_NO);
        wait_ms(9);

        //get the data with length=READ_DATA_BLOCK_NObytes 
        camera.buffer_read(VC0706_rx_buffer, 80);

        // write data to temp.jpg
        fwrite(VC0706_rx_buffer + 5, sizeof(char), READ_DATA_BLOCK_NO, camFile);
    
        //read next READ_DATA_BLOCK_NO bytes from frame buffer
        vc_frame_address = vc_frame_address + READ_DATA_BLOCK_NO;
    }

    // get the last data
    vc_frame_address = vc_frame_address - READ_DATA_BLOCK_NO;
    uint32_t last_data_length = frame_length - vc_frame_address;
    
    camera.VC0706_read_frame_buffer(vc_frame_address, last_data_length);
    wait_ms(9);
    //get the data 
    camera.buffer_read(VC0706_rx_buffer, 80);
            
    fwrite(VC0706_rx_buffer+5, sizeof(char), last_data_length, camFile);
    
    fclose(camFile);
}

 
int main (void) 
{                      
    // Check to see if the file exists: 
    // if exists,delete the file:
    sd.remove("/sd/temp.jpg");
    
    camera.Init();  
    camera.VC0706_image_size(VC0706_640x480);
    camera.ResumeVideo();   
    wait_ms(500);   
    
    
    while(1)
    {
        camera.ResumeVideo();   
        wait_ms(1000);
        
        camera.TakeSnapShot();
        CapturePhoto(); 
    }
}

Diff: CameraShield.h

Revision:
0:e5fc19091502
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CameraShield.h	Thu Dec 18 04:35:50 2014 +0000
@@ -0,0 +1,79 @@
+/*****************************************************************************************
+** File: CameraShield.h                                                                 **
+**                                                                                      **
+** For radio shack Camera Shield.                                                       **
+** http://blog.radioshack.com/2013/01/radioshack-camera-shield-for-arduino-boards/      **
+*****************************************************************************************/
+
+#ifndef CAMERA_SHIELD_H
+#define CAMERA_SHIELD_H
+
+
+#include "mbed.h"
+#include "string.h"
+#include "MODSERIAL.h"
+
+#define VC0706_PROTOCOL_SIGN            0x56
+#define VC0706_SERIAL_NUMBER            0x00
+
+#define VC0706_COMMAND_RESET            0x26
+#define VC0706_COMMAND_GEN_VERSION      0x11
+#define VC0706_COMMAND_TV_OUT_CTRL      0x44
+#define VC0706_COMMAND_OSD_ADD_CHAR     0x45
+#define VC0706_COMMAND_DOWNSIZE_SIZE        0x53
+#define VC0706_COMMAND_READ_FBUF        0x32
+#define FBUF_CURRENT_FRAME          0
+#define FBUF_NEXT_FRAME             0
+
+#define VC0706_COMMAND_FBUF_CTRL        0x36
+#define VC0706_COMMAND_COMM_MOTION_CTRL     0x37
+#define VC0706_COMMAND_COMM_MOTION_DETECTED 0x39
+#define VC0706_COMMAND_POWER_SAVE_CTRL      0x3E
+#define VC0706_COMMAND_COLOR_CTRL       0x3C
+#define VC0706_COMMAND_MOTION_CTRL      0x42
+
+
+#define VC0706_COMMAND_WRITE_DATA       0x31
+#define VC0706_COMMAND_GET_FBUF_LEN     0x34
+
+#define READ_DATA_BLOCK_NO          56
+
+#define VC0706_640x480 0x00
+#define VC0706_320x240 0x11
+#define VC0706_160x120 0x22
+
+
+
+class CameraShield
+{
+    public:
+        CameraShield ( PinName tx, PinName rx, int speed = 115200 );       
+        
+        void Init();
+        void VC0706_reset();
+        void VC0706_get_version();
+        void VC0706_tv_out_control(int on);
+        void VC0706_osd_add_char(int col, int row, char * osd_string);
+        void VC0706_w_h_downsize(int scale_width, int scale_height);
+        void VC0706_read_frame_buffer(unsigned long buffer_address, unsigned long buffer_length);
+        void VC0706_frame_control(char frame_control);
+        void VC0706_motion_detection(int control_flag);
+        void VC0706_motion_control(int control_flag);
+        void VC0706_get_framebuffer_length(char fbuf_type);
+        void VC0706_uart_power_save(char power_save_on);
+        void VC0706_uart_color_control(char show_mode);
+        void VC0706_compression_ratio(int ratio);
+        void VC0706_motion_windows_setting(unsigned int register_address, unsigned long data);
+        uint32_t VC0706_get_frame_buffer_length();
+        void VC0706_image_size(int ratio);
+        void TakeSnapShot();
+        void ResumeVideo();
+        void buffer_send(unsigned char *buff, int buffSize);
+        int buffer_read(unsigned char *buff, int buffSize);  
+        
+    private:
+        MODSERIAL       _serial;   
+
+};
+
+#endif
\ No newline at end of file