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@0:19429e334b75, 2013-03-10 (annotated)

Committer:
edodm85
Date:
Sun Mar 10 13:03:52 2013 +0000
Revision:
0:19429e334b75
Child:
2:bbd557817319
First Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
edodm85 0:19429e334b75 1 /*
edodm85 0:19429e334b75 2 * Author: Edoardo De Marchi
edodm85 0:19429e334b75 3 * Date: 10/03/13
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 0:19429e334b75 9 #define QQVGA 4 //320*240
edodm85 0:19429e334b75 10 #define QVGA 2 //160*120
edodm85 0:19429e334b75 11
edodm85 0:19429e334b75 12
edodm85 0:19429e334b75 13 void rxCallback(MODSERIAL_IRQ_INFO *q)
edodm85 0:19429e334b75 14 {
edodm85 0:19429e334b75 15 new_send = true;
edodm85 0:19429e334b75 16 }
edodm85 0:19429e334b75 17
edodm85 0:19429e334b75 18 int main()
edodm85 0:19429e334b75 19 {
edodm85 0:19429e334b75 20 pc.baud(921600);
edodm85 0:19429e334b75 21 pc.printf("SystemCoreClock: %dMHz\r\n", SystemCoreClock/1000000); // print the clock frequency
edodm85 0:19429e334b75 22 led4 = 0;
edodm85 0:19429e334b75 23
edodm85 0:19429e334b75 24 t.start();
edodm85 0:19429e334b75 25 pc.attach(&rxCallback, MODSERIAL::RxIrq);
edodm85 0:19429e334b75 26
edodm85 0:19429e334b75 27 while(1)
edodm85 0:19429e334b75 28 {
edodm85 0:19429e334b75 29 if(new_send){
edodm85 0:19429e334b75 30 int i = 0;
edodm85 0:19429e334b75 31
edodm85 0:19429e334b75 32 while(pc.readable())
edodm85 0:19429e334b75 33 {
edodm85 0:19429e334b75 34 word[i] = pc.getc();
edodm85 0:19429e334b75 35 i++;
edodm85 0:19429e334b75 36 }
edodm85 0:19429e334b75 37 parse_cmd();
edodm85 0:19429e334b75 38 }
edodm85 0:19429e334b75 39 wait_ms(50);
edodm85 0:19429e334b75 40 }
edodm85 0:19429e334b75 41 }
edodm85 0:19429e334b75 42
edodm85 0:19429e334b75 43
edodm85 0:19429e334b75 44
edodm85 0:19429e334b75 45 void parse_cmd(){
edodm85 0:19429e334b75 46 new_send = false;
edodm85 0:19429e334b75 47
edodm85 0:19429e334b75 48 if(strcmp("snap_yuv", word) == 0)
edodm85 0:19429e334b75 49 {
edodm85 0:19429e334b75 50 CameraSnap('y');
edodm85 0:19429e334b75 51 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 52 }else
edodm85 0:19429e334b75 53 if(strcmp("snap_rgb", word) == 0)
edodm85 0:19429e334b75 54 {
edodm85 0:19429e334b75 55 CameraSnap('r');
edodm85 0:19429e334b75 56 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 57
edodm85 0:19429e334b75 58 }else
edodm85 0:19429e334b75 59 if(strcmp("init_yuv", word) == 0)
edodm85 0:19429e334b75 60 {
edodm85 0:19429e334b75 61 // Reset camera on power up
edodm85 0:19429e334b75 62 camera.Reset();
edodm85 0:19429e334b75 63 // Set up for 160*120 pixels YUV (Only Y)
edodm85 0:19429e334b75 64 pc.printf("Initializing ov7670 - Format YUV & QQVGA Mode\r\n");
edodm85 0:19429e334b75 65 if(camera.Init('y') != 1)
edodm85 0:19429e334b75 66 {
edodm85 0:19429e334b75 67 pc.printf("Init Fail\r\n");
edodm85 0:19429e334b75 68 }
edodm85 0:19429e334b75 69 pc.printf("Initializing done\r\n");
edodm85 0:19429e334b75 70 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 71 }else
edodm85 0:19429e334b75 72 if(strcmp("init_rgb", word) == 0)
edodm85 0:19429e334b75 73 {
edodm85 0:19429e334b75 74 // Reset camera on power up
edodm85 0:19429e334b75 75 camera.Reset();
edodm85 0:19429e334b75 76 // Set up for 160*120 pixels RGB565
edodm85 0:19429e334b75 77 pc.printf("Initializing ov7670 - Format RGB & QQVGA Mode\r\n");
edodm85 0:19429e334b75 78 if(camera.Init('r') != 1)
edodm85 0:19429e334b75 79 {
edodm85 0:19429e334b75 80 pc.printf("Init Fail\r\n");
edodm85 0:19429e334b75 81 }
edodm85 0:19429e334b75 82 pc.printf("Initializing done\r\n");
edodm85 0:19429e334b75 83 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 84 }else
edodm85 0:19429e334b75 85 if(strcmp("reset", word) == 0)
edodm85 0:19429e334b75 86 {
edodm85 0:19429e334b75 87 mbed_reset();
edodm85 0:19429e334b75 88 }else
edodm85 0:19429e334b75 89 if(strcmp("time", word) == 0)
edodm85 0:19429e334b75 90 {
edodm85 0:19429e334b75 91 pc.printf("Time Acq from camera: %dms - Time Send to pc: %dms - Time Tot: %dms\r\n", t2-t1, t3-t2, t3-t1);
edodm85 0:19429e334b75 92 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 93 }
edodm85 0:19429e334b75 94 memset(word, 0, sizeof(word));
edodm85 0:19429e334b75 95
edodm85 0:19429e334b75 96 }
edodm85 0:19429e334b75 97
edodm85 0:19429e334b75 98
edodm85 0:19429e334b75 99
edodm85 0:19429e334b75 100 void CameraSnap(char c){
edodm85 0:19429e334b75 101 led4 = 1;
edodm85 0:19429e334b75 102 int var2 = 0;
edodm85 0:19429e334b75 103 int var = 0;
edodm85 0:19429e334b75 104 t1 = t.read_ms();
edodm85 0:19429e334b75 105
edodm85 0:19429e334b75 106 // wait until the image has been captured
edodm85 0:19429e334b75 107 camera.CaptureNext();
edodm85 0:19429e334b75 108 while(camera.CaptureDone() == false);
edodm85 0:19429e334b75 109
edodm85 0:19429e334b75 110 // Start reading in the image data from the camera hardware buffer
edodm85 0:19429e334b75 111 camera.ReadStart();
edodm85 0:19429e334b75 112
edodm85 0:19429e334b75 113 // Read the first half of the image
edodm85 0:19429e334b75 114 for (int q = 0; q < SIZE; q++)
edodm85 0:19429e334b75 115 {
edodm85 0:19429e334b75 116 bank0[q] = camera.ReadOnebyte();
edodm85 0:19429e334b75 117 }
edodm85 0:19429e334b75 118 // Read the Second half of the image
edodm85 0:19429e334b75 119 for (int q = 0; q < SIZE; q++)
edodm85 0:19429e334b75 120 {
edodm85 0:19429e334b75 121 bank1[q] = camera.ReadOnebyte();
edodm85 0:19429e334b75 122 }
edodm85 0:19429e334b75 123
edodm85 0:19429e334b75 124 // Stop reading the image
edodm85 0:19429e334b75 125 camera.ReadStop() ;
edodm85 0:19429e334b75 126 t2 = t.read_ms();
edodm85 0:19429e334b75 127
edodm85 0:19429e334b75 128 if(c == 'y')
edodm85 0:19429e334b75 129 {
edodm85 0:19429e334b75 130 var = 2; // set YUV QQVGA
edodm85 0:19429e334b75 131 var2 = 1;
edodm85 0:19429e334b75 132 }
edodm85 0:19429e334b75 133 else{
edodm85 0:19429e334b75 134 var = 1; // set RGB565 QQVGA
edodm85 0:19429e334b75 135 var2 = 0;
edodm85 0:19429e334b75 136 }
edodm85 0:19429e334b75 137
edodm85 0:19429e334b75 138 for (int i = 0; i < SIZE/var; i++) {
edodm85 0:19429e334b75 139 pc.putc(bank0[(i*var)+var2]);
edodm85 0:19429e334b75 140 }
edodm85 0:19429e334b75 141 for (int i = 0; i < SIZE/var; i++) {
edodm85 0:19429e334b75 142 pc.putc(bank1[(i*var)+var2]);
edodm85 0:19429e334b75 143 }
edodm85 0:19429e334b75 144
edodm85 0:19429e334b75 145 // Immediately request the next image to be captured
edodm85 0:19429e334b75 146 camera.CaptureNext();
edodm85 0:19429e334b75 147 while (camera.CaptureDone() == false);
edodm85 0:19429e334b75 148 t3 = t.read_ms();
edodm85 0:19429e334b75 149
edodm85 0:19429e334b75 150 pc.printf("Grab done\r\n");
edodm85 0:19429e334b75 151
edodm85 0:19429e334b75 152 led4 = 0;
edodm85 0:19429e334b75 153 }
edodm85 0:19429e334b75 154
edodm85 0:19429e334b75 155