Edoardo De Marchi / Mbed 2 deprecated OV7670_Test_Code

Test Code for OV7670 Camera module with FIFO AL422

Dependencies:   MODSERIAL mbed ov7670

Dependents:   OV7670_Test_Code

You can find more information in this page: https://mbed.org/users/edodm85/notebook/ov7670-camera-module/

main.cpp@3:b4e0cefc37f6, 2013-04-07 (annotated)

Committer:
edodm85
Date:
Sun Apr 07 10:52:10 2013 +0000
Revision:
3:b4e0cefc37f6
Parent:
2:bbd557817319
Child:
4:d0d4760d32b2
Added VGA RAW

Who changed what in which revision?

UserRevisionLine numberNew contents of line
edodm85 0:19429e334b75 1 /*
edodm85 0:19429e334b75 2 * Author: Edoardo De Marchi
edodm85 3:b4e0cefc37f6 3 * Date: 07/04/13
edodm85 0:19429e334b75 4 * Notes: OV7670 + FIFO AL422B camera test
edodm85 0:19429e334b75 5 */
edodm85 0:19429e334b75 6
edodm85 0:19429e334b75 7 #include "main.h"
edodm85 0:19429e334b75 8
edodm85 2:bbd557817319 9 #define VGA 307200 //640*480
edodm85 2:bbd557817319 10 #define QVGA 76800 //320*240
edodm85 2:bbd557817319 11 #define QQVGA 19200 //160*120
edodm85 2:bbd557817319 12
edodm85 2:bbd557817319 13 static char format = ' ';
edodm85 2:bbd557817319 14 static int resolution = 0;
edodm85 0:19429e334b75 15
edodm85 0:19429e334b75 16
edodm85 0:19429e334b75 17 void rxCallback(MODSERIAL_IRQ_INFO *q)
edodm85 0:19429e334b75 18 {
edodm85 0:19429e334b75 19 new_send = true;
edodm85 0:19429e334b75 20 }
edodm85 0:19429e334b75 21
edodm85 0:19429e334b75 22 int main()
edodm85 0:19429e334b75 23 {
edodm85 0:19429e334b75 24 pc.baud(921600);
edodm85 0:19429e334b75 25 pc.printf("SystemCoreClock: %dMHz\r\n", SystemCoreClock/1000000); // print the clock frequency
edodm85 0:19429e334b75 26 led4 = 0;
edodm85 0:19429e334b75 27
edodm85 0:19429e334b75 28 t.start();
edodm85 0:19429e334b75 29 pc.attach(&rxCallback, MODSERIAL::RxIrq);
edodm85 0:19429e334b75 30
edodm85 0:19429e334b75 31 while(1)
edodm85 0:19429e334b75 32 {
edodm85 0:19429e334b75 33 if(new_send){
edodm85 0:19429e334b75 34 int i = 0;
edodm85 0:19429e334b75 35
edodm85 0:19429e334b75 36 while(pc.readable())
edodm85 0:19429e334b75 37 {
edodm85 0:19429e334b75 38 word[i] = pc.getc();
edodm85 0:19429e334b75 39 i++;
edodm85 0:19429e334b75 40 }
edodm85 0:19429e334b75 41 parse_cmd();
edodm85 0:19429e334b75 42 }
edodm85 0:19429e334b75 43 wait_ms(50);
edodm85 0:19429e334b75 44 }
edodm85 0:19429e334b75 45 }
edodm85 0:19429e334b75 46
edodm85 0:19429e334b75 47
edodm85 0:19429e334b75 48
edodm85 0:19429e334b75 49 void parse_cmd(){
edodm85 0:19429e334b75 50 new_send = false;
edodm85 0:19429e334b75 51
edodm85 2:bbd557817319 52 if(strcmp("snap", word) == 0)
edodm85 0:19429e334b75 53 {
edodm85 2:bbd557817319 54 CameraSnap();
edodm85 0:19429e334b75 55 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 56 }else
edodm85 3:b4e0cefc37f6 57 if(strcmp("init_bw_VGA", word) == 0) // Set up for 640*480 pixels RAW
edodm85 0:19429e334b75 58 {
edodm85 2:bbd557817319 59 format = 'b';
edodm85 2:bbd557817319 60 resolution = VGA;
edodm85 2:bbd557817319 61 if(camera.Init('b', VGA) != 1)
edodm85 2:bbd557817319 62 {
edodm85 2:bbd557817319 63 pc.printf("Init Fail\r\n");
edodm85 2:bbd557817319 64 }
edodm85 2:bbd557817319 65 pc.printf("Initializing done\r\n");
edodm85 2:bbd557817319 66 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 67 }else
edodm85 2:bbd557817319 68 if(strcmp("init_yuv_QVGA", word) == 0) // Set up for 320*240 pixels YUV422
edodm85 2:bbd557817319 69 {
edodm85 2:bbd557817319 70 format = 'y';
edodm85 2:bbd557817319 71 resolution = QVGA;
edodm85 2:bbd557817319 72 if(camera.Init('b', QVGA) != 1)
edodm85 2:bbd557817319 73 {
edodm85 2:bbd557817319 74 pc.printf("Init Fail\r\n");
edodm85 2:bbd557817319 75 }
edodm85 2:bbd557817319 76 pc.printf("Initializing done\r\n");
edodm85 0:19429e334b75 77 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 78 }else
edodm85 2:bbd557817319 79 if(strcmp("init_rgb_QVGA", word) == 0) // Set up for 320*240 pixels RGB565
edodm85 2:bbd557817319 80 {
edodm85 2:bbd557817319 81 format = 'r';
edodm85 2:bbd557817319 82 resolution = QVGA;
edodm85 2:bbd557817319 83 if(camera.Init('r', QVGA) != 1)
edodm85 2:bbd557817319 84 {
edodm85 2:bbd557817319 85 pc.printf("Init Fail\r\n");
edodm85 2:bbd557817319 86 }
edodm85 2:bbd557817319 87 pc.printf("Initializing done\r\n");
edodm85 2:bbd557817319 88 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 89 }else
edodm85 2:bbd557817319 90 if(strcmp("init_bw_QVGA", word) == 0) // Set up for 320*240 pixels YUV (Only Y)
edodm85 0:19429e334b75 91 {
edodm85 2:bbd557817319 92 format = 'b';
edodm85 2:bbd557817319 93 resolution = QVGA;
edodm85 2:bbd557817319 94 if(camera.Init('b', QVGA) != 1)
edodm85 2:bbd557817319 95 {
edodm85 2:bbd557817319 96 pc.printf("Init Fail\r\n");
edodm85 2:bbd557817319 97 }
edodm85 2:bbd557817319 98 pc.printf("Initializing done\r\n");
edodm85 2:bbd557817319 99 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 100 }else
edodm85 2:bbd557817319 101 if(strcmp("init_yuv_QQVGA", word) == 0) // Set up for 160*120 pixels YUV422
edodm85 2:bbd557817319 102 {
edodm85 2:bbd557817319 103 format = 'y';
edodm85 2:bbd557817319 104 resolution = QQVGA;
edodm85 2:bbd557817319 105 if(camera.Init('b', QQVGA) != 1)
edodm85 2:bbd557817319 106 {
edodm85 2:bbd557817319 107 pc.printf("Init Fail\r\n");
edodm85 2:bbd557817319 108 }
edodm85 2:bbd557817319 109 pc.printf("Initializing done\r\n");
edodm85 2:bbd557817319 110 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 111 }else
edodm85 2:bbd557817319 112 if(strcmp("init_rgb_QQVGA", word) == 0) // Set up for 160*120 pixels RGB565
edodm85 2:bbd557817319 113 {
edodm85 2:bbd557817319 114 format = 'r';
edodm85 2:bbd557817319 115 resolution = QQVGA;
edodm85 2:bbd557817319 116 if(camera.Init('r', QQVGA) != 1)
edodm85 0:19429e334b75 117 {
edodm85 0:19429e334b75 118 pc.printf("Init Fail\r\n");
edodm85 0:19429e334b75 119 }
edodm85 0:19429e334b75 120 pc.printf("Initializing done\r\n");
edodm85 0:19429e334b75 121 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 122 }else
edodm85 2:bbd557817319 123 if(strcmp("init_bw_QQVGA", word) == 0) // Set up for 160*120 pixels YUV (Only Y)
edodm85 2:bbd557817319 124 {
edodm85 2:bbd557817319 125 format = 'b';
edodm85 2:bbd557817319 126 resolution = QQVGA;
edodm85 2:bbd557817319 127 if(camera.Init('b', QQVGA) != 1)
edodm85 0:19429e334b75 128 {
edodm85 0:19429e334b75 129 pc.printf("Init Fail\r\n");
edodm85 0:19429e334b75 130 }
edodm85 0:19429e334b75 131 pc.printf("Initializing done\r\n");
edodm85 0:19429e334b75 132 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 133 }else
edodm85 0:19429e334b75 134 if(strcmp("reset", word) == 0)
edodm85 0:19429e334b75 135 {
edodm85 0:19429e334b75 136 mbed_reset();
edodm85 0:19429e334b75 137 }else
edodm85 0:19429e334b75 138 if(strcmp("time", word) == 0)
edodm85 0:19429e334b75 139 {
edodm85 2:bbd557817319 140 pc.printf("Tot time acq + send (mbed): %dms\r\n", t2-t1);
edodm85 0:19429e334b75 141 memset(word, 0, sizeof(word));
edodm85 2:bbd557817319 142 }
edodm85 2:bbd557817319 143
edodm85 0:19429e334b75 144 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 145
edodm85 0:19429e334b75 146 }
edodm85 0:19429e334b75 147
edodm85 0:19429e334b75 148
edodm85 2:bbd557817319 149 void CameraSnap(){
edodm85 0:19429e334b75 150 led4 = 1;
edodm85 2:bbd557817319 151
edodm85 2:bbd557817319 152 // Kick things off by capturing an image
edodm85 0:19429e334b75 153 camera.CaptureNext();
edodm85 2:bbd557817319 154 while(camera.CaptureDone() == false);
edodm85 0:19429e334b75 155 // Start reading in the image data from the camera hardware buffer
edodm85 0:19429e334b75 156 camera.ReadStart();
edodm85 2:bbd557817319 157 t1 = t.read_ms();
edodm85 0:19429e334b75 158
edodm85 2:bbd557817319 159 for(int x = 0; x<resolution; x++)
edodm85 0:19429e334b75 160 {
edodm85 2:bbd557817319 161 // Read in the first half of the image
edodm85 3:b4e0cefc37f6 162 if(format == 'b' && resolution != VGA)
edodm85 2:bbd557817319 163 {
edodm85 2:bbd557817319 164 camera.ReadOnebyte();
edodm85 2:bbd557817319 165 }else
edodm85 2:bbd557817319 166 if(format == 'y' || format == 'r')
edodm85 2:bbd557817319 167 {
edodm85 2:bbd557817319 168 pc.putc(camera.ReadOnebyte());
edodm85 2:bbd557817319 169 }
edodm85 2:bbd557817319 170 // Read in the Second half of the image
edodm85 2:bbd557817319 171 pc.putc(camera.ReadOnebyte()); // Y only
edodm85 0:19429e334b75 172 }
edodm85 2:bbd557817319 173
edodm85 2:bbd557817319 174 camera.ReadStop();
edodm85 2:bbd557817319 175 t2 = t.read_ms();
edodm85 0:19429e334b75 176
edodm85 2:bbd557817319 177 // Immediately request the next image to be captured (takes around 45ms)
edodm85 0:19429e334b75 178 camera.CaptureNext();
edodm85 2:bbd557817319 179 // Now wait for the image to finish being captured
edodm85 0:19429e334b75 180 while (camera.CaptureDone() == false);
edodm85 0:19429e334b75 181
edodm85 2:bbd557817319 182 pc.printf("Snap_done\r\n");
edodm85 0:19429e334b75 183 led4 = 0;
edodm85 2:bbd557817319 184 }