ov5640 problem
Opened this issue · 15 comments
i try to use the cam with the pocketbeagle.
sadly everything is for 5642 only. is there any idea how i get this to work with the 5640 variant. i just need to capture a picture.
i try to find an answer in the orginal arduino-library. sadly without any luck.
someone have any advice how i can use this cam?
ok, i managed to get the code from BBBCAM_OV5642_DigitalCamera to find the OV5640.
I added the related code from the original ArduCam.h and ArduCam.c to BBBCam.h and BBBCam.c
since that i got the output that the cam is found.
now the problem is that my Setup() ends with InitCAM() and seems never to return back to the main-void which will do the capturing logic. any idea why this happens?
/*
============================================================================
Name : BBBCAM_OV5640_DigitalCamera.c
Author : Lee
Version : V1.0
Copyright : ArduCAM demo (C)2015 Lee
Description :
============================================================================
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <time.h>
// #include "memorysaver.h"
#include "UTFT_SPI.h"
#include "BBBCAM.h"
#define BOOL int
#define TRUE 1
#define FALSE 0
#define OV5640_CHIPID_HIGH 0x300a
#define OV5640_CHIPID_LOW 0x300b
#define OV5640_MAX_FIFO_SIZE 0x7FFFFF //8MByte
#define SHUTTER_MASK 0x02
#define BUF_SIZE 4096
// #define CAM1_CS 0x15c
void setup()
{
uint8_t vid,pid;
uint8_t temp;
UTFT();
ArduCAM(OV5640);
printf("ArduCAM Start!\n");
//Check if the ArduCAM SPI bus is OK
write_reg(ARDUCHIP_TEST1, 0x55);
temp = read_reg(ARDUCHIP_TEST1);
// printf(temp);
if(temp != 0x55)
{
printf("SPI interface Error!\n");
while(1);
}
else
printf("SPI interface SEEMS OK!!!\n");
//Change MCU mode
write_reg(ARDUCHIP_MODE, 0x00);
// InitLCD();
//Check if the camera module type is OV5640
rdSensorReg16_8(OV5640_CHIPID_HIGH, &vid);
printf("vid is : %x",vid);
rdSensorReg16_8(OV5640_CHIPID_LOW, &pid);
printf(" pid is : %x\n",pid);
if((vid != 0x56) || (pid != 0x40))
printf("Can't find OV5640 module!\n");
else
printf("OV5640 detected\n");
//Change to BMP capture mode and initialize the OV5640 module
set_format(JPEG);
InitCAM();
}
int main(void)
{
BOOL isShowFlag = TRUE;
int nmemb = 1;
// set_format(BMP);
setup();
printf("after setup");
printf("after initCam in setup");
while(1)
{
uint8_t buf[256];
static int i = 0;
static int k = 0;
static int n = 0;
uint8_t temp,temp_last;
uint8_t start_capture = 0;
// printf("%d\n",read_reg(ARDUCHIP_TRIG));
// printf("wait trigger");
//Wait trigger from shutter buttom
if(read_reg(ARDUCHIP_TRIG) & SHUTTER_MASK)
{
printf("read something\n");
isShowFlag = FALSE;
write_reg(ARDUCHIP_MODE, 0x00);
set_format(JPEG);
InitCAM();
write_reg(ARDUCHIP_TIM, VSYNC_LEVEL_MASK); //VSYNC is active HIGH
//Wait until buttom released
while(read_reg(ARDUCHIP_TRIG) & SHUTTER_MASK);
delayms(1000);
start_capture = 1;
}
else
{
if(isShowFlag )
{
temp = read_reg(ARDUCHIP_TRIG);
if(!(temp & VSYNC_MASK)) //New Frame is coming
{
// printf("else and isShowFlag");
write_reg(ARDUCHIP_MODE, 0x00); //Switch to MCU
resetXY();
write_reg(ARDUCHIP_MODE, 0x01); //Switch to CAM
while(!(read_reg(ARDUCHIP_TRIG)&0x01)); //Wait for VSYNC is gone
}
}
}
if(start_capture)
{
printf("try to Capture\n");
//Flush the FIFO
flush_fifo();
//Clear the capture done flag
clear_fifo_flag();
//Start capture
capture();
printf("Start Capture\n");
}
if(read_reg(ARDUCHIP_TRIG) & CAP_DONE_MASK)
{
printf("Capture Done!\n");
//Construct a file name
memset(filePath,0,20);
strcat(filePath,"/home/debian/");
getnowtime();
strcat(filePath,nowtime);
strcat(filePath,".bmp");
//Open the new file
fp = fopen(filePath,"w+");
if (fp == NULL)
{
printf("open file failed");
return 0;
}
i = 0;
temp = read_fifo();
//Write first image data to buffer
buf[i++] = temp;
// printf("%d\n",temp);
//Read JPEG data from FIFO
while( (temp != 0xD9) | (temp_last != 0xFF) )
{
temp_last = temp;
temp = read_fifo();
// printf("%d\n",temp);
//Write image data to buffer if not full
if(i < 256)
buf[i++] = temp;
else
{
//Write 256 uint8_ts image data to file
fwrite(buf,256,nmemb,fp);
i = 0;
buf[i++] = temp;
}
}
//Write the remain uint8_ts in the buffer
if(i > 0)
fwrite(buf,i,nmemb,fp);
//Close the file
fclose(fp);
//Clear the capture done flag
clear_fifo_flag();
//Clear the start capture flag
start_capture = 0;
set_format(BMP);
InitCAM();
isShowFlag = TRUE;
}
}
}
hi there. thank for your reply. i use the ArduCam Mini-5Mp-Plus Module attached to spi0 and i2c-1.
ok i tested with arduino uno and everything works fine with the module.
so i will switch back to the beaglebone. any idea how i can get this to work?
how do i do this? i switched the sda sdl to my arduino and the spi pins to the bone. the app now prints out a spi error when i try to connect:
ok i try this without any progress. but now i realize the vid and pid changed after this test. how is this possible?
ok this was a strange bug. now they are back to
vid = 0x56
pid = 0x40
but no real image. shouldn't it be possible when the programm is running that i get connection via ArduCAM_Host_V2?
so the programm runs till InitCAM() gets the case for the camera model,
but seems to stand still after reaching the first wrSensorReg16_8 methode.
maybe you could be more specific in how i can test the cam with beaglebone and arduino ...
hello, after a while of experimenting, i have a problem with the arduChip_Trig.
when i use the bmp mode, the Arduchip_trig changes from 1 to 8 and leaves the capture while.
but when i change the format to JPEG it ARDUCHIP_TRIG does not change. the while loop runs infinit.
while (!(read_reg(ARDUCHIP_TRIG) & CAP_DONE_MASK))
do you have any suggestion why this happens?
i used the // ArduCAM Mini 5MP demo (C)2017 Lee and the newest ArduCam library and add alle the differences to the BBBCam library. i really need to get this to work. so any help or idea why the "capture done" flag does not change will help me.
thank you very much
int main(void)
{
uint8_t temp;
uint8_t tempData = 0, tempData_last = 0;
printf("tut er was ? \n");
setup();
printf("back from setup \n");
delayms(1000);
//VSYNC is active HIGH
// Flush the FIFO
flush_fifo();
// Clear the capture done flag
clear_fifo_flag();
// Start capture
printf("Start capture\n");
temp = read_reg(ARDUCHIP_TRIG);
printf("after capture ARDUCHIP_TRIG %x \n", temp);
capture();
// while (!(read_reg(ARDUCHIP_TRIG) & CAP_DONE_MASK)){
while ((read_reg(ARDUCHIP_TRIG) == 1) ){
temp = read_reg(ARDUCHIP_TRIG);
printf("CAPTURING %x \n", temp);
}
//never reaches this point. stuck in while loop ARDUCHIP_TRIG stays at 1
printf("CAM Capture Done %x \n", temp);
void setup()
{
uint8_t temp;
uint8_t vid,pid;
printf("im Setup \n");
// system(DECONFIGCSPIN);
ArduCAM(OV5640);
write_reg(ARDUCHIP_TEST1, 0x54);
// delayms(1000);
temp = read_reg(ARDUCHIP_TEST1);
printf( "ARDUCHIP_TEST1: %X \n", temp);
write_reg(ARDUCHIP_TEST2, 0x84);
// delayms(1000);
temp = read_reg(ARDUCHIP_TEST2);
printf( "ARDUCHIP_TEST2: %X \n", temp);
printf( "SensorAddress: %X \n", myCAM.sensor_addr);
write_reg(ARDUCHIP_MODE, 0x00);
// delayms(1000);
temp = read_reg(ARDUCHIP_MODE);
printf( "ARDUCHIP_MODE: %X \n", temp);
//
rdSensorReg16_8(OV5640_CHIPID_HIGH, &vid);
printf( "OV5640_CHIPID_HIGH:%x \n", vid);
rdSensorReg16_8(OV5640_CHIPID_LOW, &pid);
printf( "OV5640_CHIPID_LOW:%x \n", pid);
if((vid != 0x56) || (pid != 0x40))
printf("Can't find OV5640 module!");
else
printf("OV5640 detected.\n");
set_format(JPEG);
OV5640_set_JPEG_size(OV5640_320x240);
delayms(1000);
InitCAM();
write_reg(ARDUCHIP_TIM, VSYNC_LEVEL_MASK);
printf("after set VSYNC active HIGH \n");
// OV5640_set_JPEG_size(OV5640_2592x1944); //2592x1944 QSXGA
// Let auto exposure do it's thing after changing image settings
delayms(1000);
// Clear the capture done flag
clear_fifo_flag();
}
Hi,
Do you have any progress here?
I'm using PocketBeagle, however, images are broken.
I can communicate with a camera with both I2C and SPI:
By Using Arduino Mega ADK and the code from github, I can capture images from the camera.
However, on a BeagleBone (pocket in my case) the captured data is not a relevant jpeg.