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Test Code for OV7670 Camera module with FIFO AL422
Dependencies: MODSERIAL mbed ov7670
You can find more information in this page: https://mbed.org/users/edodm85/notebook/ov7670-camera-module/
main.cpp
- Committer:
- edodm85
- Date:
- 2013-03-16
- Revision:
- 2:bbd557817319
- Parent:
- 0:19429e334b75
- Child:
- 3:b4e0cefc37f6
File content as of revision 2:bbd557817319:
/* * Author: Edoardo De Marchi * Date: 10/03/13 * Notes: OV7670 + FIFO AL422B camera test */ #include "main.h" #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) { new_send = true; } int main() { pc.baud(921600); pc.printf("SystemCoreClock: %dMHz\r\n", SystemCoreClock/1000000); // print the clock frequency led4 = 0; t.start(); pc.attach(&rxCallback, MODSERIAL::RxIrq); while(1) { if(new_send){ int i = 0; while(pc.readable()) { word[i] = pc.getc(); i++; } parse_cmd(); } wait_ms(50); } } void parse_cmd(){ new_send = false; if(strcmp("snap", word) == 0) { CameraSnap(); memset(word, 0, sizeof(word)); }else if(strcmp("init_bw_VGA", word) == 0) // Set up for 640*480 pixels YUV (Only Y) { 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_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) { 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_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"); } pc.printf("Initializing done\r\n"); memset(word, 0, sizeof(word)); }else if(strcmp("reset", word) == 0) { mbed_reset(); }else if(strcmp("time", word) == 0) { pc.printf("Tot time acq + send (mbed): %dms\r\n", t2-t1); memset(word, 0, sizeof(word)); } memset(word, 0, sizeof(word)); } void CameraSnap(){ led4 = 1; // Kick things off by capturing an image camera.CaptureNext(); while(camera.CaptureDone() == false); // Start reading in the image data from the camera hardware buffer camera.ReadStart(); t1 = t.read_ms(); for(int x = 0; x<resolution; x++) { // 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 } camera.ReadStop(); t2 = t.read_ms(); // 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); pc.printf("Snap_done\r\n"); led4 = 0; }