Sebastian Barrera
Version 3: Trying to interleave capture and read
Dependencies: ov7670_lib Project_test
Diff: main.cpp
- Revision:
- 2:bbd557817319
- Parent:
- 0:19429e334b75
- Child:
- 3:b4e0cefc37f6
diff -r 922cfb5e36ba -r bbd557817319 main.cpp
--- a/main.cpp Sun Mar 10 13:20:27 2013 +0000
+++ b/main.cpp Sat Mar 16 13:45:09 2013 +0000
@@ -6,8 +6,12 @@
#include "main.h"
-#define QQVGA 4 //320*240
-#define QVGA 2 //160*120
+#define VGA 307200 //640*480
+#define QVGA 76800 //320*240
+#define QQVGA 19200 //160*120
+
+static char format = ' ';
+static int resolution = 0;
void rxCallback(MODSERIAL_IRQ_INFO *q)
@@ -45,37 +49,89 @@
void parse_cmd(){
new_send = false;
- if(strcmp("snap_yuv", word) == 0)
+ if(strcmp("snap", word) == 0)
{
- CameraSnap('y');
+ CameraSnap();
memset(word, 0, sizeof(word));
}else
- if(strcmp("snap_rgb", word) == 0)
+ if(strcmp("init_bw_VGA", word) == 0) // Set up for 640*480 pixels YUV (Only Y)
{
- CameraSnap('r');
+ pc.printf("Initializing ov7670 - Format YUV422(Y only) & VGA Mode\r\n");
+ format = 'b';
+ resolution = VGA;
+ if(camera.Init('b', VGA) != 1)
+ {
+ pc.printf("Init Fail\r\n");
+ }
+ pc.printf("Initializing done\r\n");
+ memset(word, 0, sizeof(word));
+ }else
+ if(strcmp("init_yuv_QVGA", word) == 0) // Set up for 320*240 pixels YUV422
+ {
+ pc.printf("Initializing ov7670 - Format YUV422 & QVGA Mode\r\n");
+ format = 'y';
+ resolution = QVGA;
+ if(camera.Init('b', QVGA) != 1)
+ {
+ pc.printf("Init Fail\r\n");
+ }
+ pc.printf("Initializing done\r\n");
memset(word, 0, sizeof(word));
-
- }else
- if(strcmp("init_yuv", word) == 0)
+ }else
+ if(strcmp("init_rgb_QVGA", word) == 0) // Set up for 320*240 pixels RGB565
+ {
+ pc.printf("Initializing ov7670 - Format RGB565 & QVGA Mode\r\n");
+ format = 'r';
+ resolution = QVGA;
+ if(camera.Init('r', QVGA) != 1)
+ {
+ pc.printf("Init Fail\r\n");
+ }
+ pc.printf("Initializing done\r\n");
+ memset(word, 0, sizeof(word));
+ }else
+ if(strcmp("init_bw_QVGA", word) == 0) // Set up for 320*240 pixels YUV (Only Y)
{
- // Reset camera on power up
- camera.Reset();
- // Set up for 160*120 pixels YUV (Only Y)
- pc.printf("Initializing ov7670 - Format YUV & QQVGA Mode\r\n");
- if(camera.Init('y') != 1)
+ pc.printf("Initializing ov7670 - Format YUV422(Y only) & QVGA Mode\r\n");
+ format = 'b';
+ resolution = QVGA;
+ if(camera.Init('b', QVGA) != 1)
+ {
+ pc.printf("Init Fail\r\n");
+ }
+ pc.printf("Initializing done\r\n");
+ memset(word, 0, sizeof(word));
+ }else
+ if(strcmp("init_yuv_QQVGA", word) == 0) // Set up for 160*120 pixels YUV422
+ {
+ pc.printf("Initializing ov7670 - Format YUV422 & QQVGA Mode\r\n");
+ format = 'y';
+ resolution = QQVGA;
+ if(camera.Init('b', QQVGA) != 1)
+ {
+ pc.printf("Init Fail\r\n");
+ }
+ pc.printf("Initializing done\r\n");
+ memset(word, 0, sizeof(word));
+ }else
+ if(strcmp("init_rgb_QQVGA", word) == 0) // Set up for 160*120 pixels RGB565
+ {
+ pc.printf("Initializing ov7670 - Format RGB565 & QQVGA Mode\r\n");
+ format = 'r';
+ resolution = QQVGA;
+ if(camera.Init('r', QQVGA) != 1)
{
pc.printf("Init Fail\r\n");
}
pc.printf("Initializing done\r\n");
memset(word, 0, sizeof(word));
}else
- if(strcmp("init_rgb", word) == 0)
- {
- // Reset camera on power up
- camera.Reset();
- // Set up for 160*120 pixels RGB565
- pc.printf("Initializing ov7670 - Format RGB & QQVGA Mode\r\n");
- if(camera.Init('r') != 1)
+ if(strcmp("init_bw_QQVGA", word) == 0) // Set up for 160*120 pixels YUV (Only Y)
+ {
+ pc.printf("Initializing ov7670 - Format YUV422(Y only) & QQVGA Mode\r\n");
+ format = 'b';
+ resolution = QQVGA;
+ if(camera.Init('b', QQVGA) != 1)
{
pc.printf("Init Fail\r\n");
}
@@ -88,68 +144,48 @@
}else
if(strcmp("time", word) == 0)
{
- pc.printf("Time Acq from camera: %dms - Time Send to pc: %dms - Time Tot: %dms\r\n", t2-t1, t3-t2, t3-t1);
+ pc.printf("Tot time acq + send (mbed): %dms\r\n", t2-t1);
memset(word, 0, sizeof(word));
- }
+ }
+
memset(word, 0, sizeof(word));
}
-
-void CameraSnap(char c){
+void CameraSnap(){
led4 = 1;
- int var2 = 0;
- int var = 0;
- t1 = t.read_ms();
-
- // wait until the image has been captured
+
+ // Kick things off by capturing an image
camera.CaptureNext();
- while(camera.CaptureDone() == false);
-
+ while(camera.CaptureDone() == false);
// Start reading in the image data from the camera hardware buffer
camera.ReadStart();
+ t1 = t.read_ms();
- // Read the first half of the image
- for (int q = 0; q < SIZE; q++)
- {
- bank0[q] = camera.ReadOnebyte();
- }
- // Read the Second half of the image
- for (int q = 0; q < SIZE; q++)
+ for(int x = 0; x<resolution; x++)
{
- bank1[q] = camera.ReadOnebyte();
- }
-
- // Stop reading the image
- camera.ReadStop() ;
- t2 = t.read_ms();
-
- if(c == 'y')
- {
- var = 2; // set YUV QQVGA
- var2 = 1;
+ // Read in the first half of the image
+ if(format == 'b')
+ {
+ camera.ReadOnebyte();
+ }else
+ if(format == 'y' || format == 'r')
+ {
+ pc.putc(camera.ReadOnebyte());
+ }
+ // Read in the Second half of the image
+ pc.putc(camera.ReadOnebyte()); // Y only
}
- else{
- var = 1; // set RGB565 QQVGA
- var2 = 0;
- }
+
+ camera.ReadStop();
+ t2 = t.read_ms();
- for (int i = 0; i < SIZE/var; i++) {
- pc.putc(bank0[(i*var)+var2]);
- }
- for (int i = 0; i < SIZE/var; i++) {
- pc.putc(bank1[(i*var)+var2]);
- }
-
- // Immediately request the next image to be captured
+ // Immediately request the next image to be captured (takes around 45ms)
camera.CaptureNext();
+ // Now wait for the image to finish being captured
while (camera.CaptureDone() == false);
- t3 = t.read_ms();
- pc.printf("Grab done\r\n");
-
+ pc.printf("Snap_done\r\n");
led4 = 0;
-}
-
-
+}
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