I want to use the OV5642 camera with the STM32F7508-DK card and display the image I take from the camera on the LCD screen on the card.
Is this possible? If it is possible, can you help me how to do this?
1 ACCEPTED SOLUTION
Accepted Solutions
Hello @Sule_Akcay ,
It is mentioned in AN5020 "Introduction to digital camera interface (DCMI) for STM32 MCUs" that OV5642 as an ArduCAM 5 Megapixels camera module compatible with STM32 DCMI.
For the connection between the camera module and STM32F7508-DK, I advise you to refer to the camera module datasheet and to board schematic. Note that this board has an "External Camera connector".
Also, I recommend you to start with an available example which is Camera. This example provides a short description of how to use the DCMI to interface with a camera module and to display in continuous or snapshot modes the picture on the LCD. This application has been tested with STM32F7508-DISCO board and OV9655 camera sensor and can be easily tailored to any other supported device and development board.
I hope this answer your request.
Thank you for your contribution in STCommunity 🙂.
Kaouthar
I found a sample application of the OV5642 camera module for the STM32F103C8T6 chip. However, I had difficulty adapting this code example to the STM32F7508-DK development board. Is there anyone who can help on this issue?
OV5642 camera module example application code for STM32F103C8T6 chip:
/**
* @file main.c
* @author Arducam
* @version V0.1
* @date 2018.06.22
* @brief Minly work
*/
#include "main.h"
int main(void)
{
uint8_t vid, pid, temp ;
uint8_t Camera_WorkMode = 0;
uint8_t start_shoot = 0;
uint8_t stop = 0;
NVIC_Configuration();
SystemInit();
delay_init();
USART1_UART_Init(921600);
ArduCAM_LED_init();
ArduCAM_CS_init();
sccb_bus_init();
SPI1_Init();
while(1)
{
write_reg(ARDUCHIP_TEST1, 0x55);
temp = read_reg(ARDUCHIP_TEST1);
if (temp != 0x55)
{
printf("ACK CMD SPI interface Error!\n");
delay_ms(1000);
continue;
}
else
{
printf("ACK CMD SPI interface OK!\r\n");
break;
}
}
while(1)
{
sensor_addr = 0x60;
wrSensorReg8_8(0xff, 0x01);
rdSensorReg8_8(OV2640_CHIPID_HIGH, &vid);
rdSensorReg8_8(OV2640_CHIPID_LOW, &pid);
if ((vid != 0x26 ) && (( pid != 0x41 ) || ( pid != 0x42 )))
printf("ACK CMD Can't find OV2640 module!\r\n");
else
{
sensor_model = OV2640 ;
printf("ACK CMD OV2640 detected.\r\n");
break;
}
sensor_addr = 0x78;
rdSensorReg16_8(OV5640_CHIPID_HIGH, &vid);
rdSensorReg16_8(OV5640_CHIPID_LOW, &pid);
if ((vid != 0x56) || (pid != 0x40))
printf("ACK CMD Can't find OV5640 module!\r\n");
else
{
sensor_model = OV5640 ;
printf("ACK CMD OV5640 detected.\r\n");
break;
}
sensor_addr = 0x78;
rdSensorReg16_8(OV5642_CHIPID_HIGH, &vid);
rdSensorReg16_8(OV5642_CHIPID_LOW, &pid);
if ((vid != 0x56) || (pid != 0x42))
{
printf("ACK CMD Can't find OV5642 module!\r\n");
continue;
}
else
{
sensor_model = OV5642 ;
printf("ACK CMD OV5642 detected.\r\n");
break;
}
}
//Support OV2640/OV5640/OV5642 Init
ArduCAM_Init(sensor_model);
while(1)
{
if(NewCMD == 1)
{
NewCMD = 0;
switch(USART1_RecieveData)
{
case 0:
if (sensor_model == OV2640)
{
OV2640_set_JPEG_size(OV2640_160x120);
printf("ACK CMD switch to OV2640_160x120\r\n");
}
else if(sensor_model == OV5640)
{
OV5640_set_JPEG_size(OV5640_320x240);
printf("ACK CMD switch to OV5640_320x240\r\n");
}
else if(sensor_model == OV5642)
{
OV5642_set_JPEG_size(OV5642_320x240);
printf("ACK CMD switch to OV5642_320x240\r\n");
}
break;
case 1:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_176x144);
printf("ACK CMD switch to OV2640_176x144\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_352x288);
printf("ACK CMD switch to OV5640_352x288\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_640x480);
printf("ACK CMD switch to OV5642_640x480\r\n");
}
break;
case 2:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_320x240);
printf("ACK CMD switch to OV2640_320x240\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_640x480);
printf("ACK CMD switch to OV5640_640x480\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_1024x768);
printf("ACK CMD switch to OV5642_1024x768\r\n");
}
break;
case 3:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_352x288);
printf("ACK CMD switch to OV2640_352x288\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_800x480);
printf("ACK CMD switch to OV5640_800x480\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_1280x960);
printf("ACK CMD switch to OV5642_1280x960\r\n");
}
break;
case 4:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_640x480);
printf("ACK CMD switch to OV2640_640x480\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_1024x768);
printf("ACK CMD switch to OV5640_1024x768\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_1600x1200);
printf("ACK CMD switch to OV5642_1600x1200\r\n");
}
break;
case 5:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_800x600);
printf("ACK CMD switch to OV2640_800x600\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_1280x960);
printf("ACK CMD switch to OV5640_1280x960\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_2048x1536);
printf("ACK CMD switch to OV5642_2048x1536\r\n");
}
break;
case 6:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_1024x768);
printf("ACK CMD switch to OV2640_1024x768\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_1600x1200);
printf("ACK CMD switch to OV5640_1600x1200\r\n");
}
else if(sensor_model== OV5642)
{
OV5642_set_JPEG_size(OV5642_2592x1944);
printf("ACK CMD switch to OV5642_2592x1944\r\n");
}
break;
case 7:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_1280x1024);
printf("ACK CMD switch to OV2640_1280x1024\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_2048x1536);
printf("ACK CMD switch to OV5640_2048x1536\r\n");
}
break;
case 8:
if(sensor_model== OV2640)
{
OV2640_set_JPEG_size(OV2640_1600x1200);
printf("ACK CMD switch to OV2640_1600x1200\r\n");
}
else if(sensor_model== OV5640)
{
OV5640_set_JPEG_size(OV5640_2592x1944);
printf("ACK CMD switch to OV5640_2592x1944\r\n");
}
break;
case 0x10:
Camera_WorkMode = 1;
start_shoot = 1;
printf("ACK CMD CAM start single shoot.\r\n");
break;
case 0x11:
set_format(JPEG);
ArduCAM_Init(sensor_model);
#if !defined(OV2640)
set_bit(ARDUCHIP_TIM,VSYNC_MASK);
#endif
break;
case 0x20:
Camera_WorkMode = 2;
start_shoot = 2;
printf("ACK CMD CAM start video streaming.\r\n");
break;
case 0x21:
stop = 1;
printf("ACK CMD CAM stop video streaming.\r\n");
break;
case 0x30:
Camera_WorkMode = 3;
start_shoot = 3;
printf("ACK CMD CAM start single shoot.\r\n");
break;
case 0x31:
set_format(BMP);
ArduCAM_Init(sensor_model);
if(sensor_model != OV2640)
{
clear_bit(ARDUCHIP_TIM, VSYNC_LEVEL_MASK);
}
wrSensorReg16_8(0x3818,0x81);
wrSensorReg16_8(0x3621,0xa7);
printf("ACK CMD SetToBMP \r\n");
break;
default:
break;
}
}
if(Camera_WorkMode == 1)
{
if(start_shoot == 1)
{
start_shoot = 0;
SingleCapTransfer();
}
if(receive_OK)
{
receive_OK= 0;
SendbyUSART1();
}
}
else if(Camera_WorkMode == 2)
{
if(start_shoot == 2)
{
if(send_OK)
{
if(stop)
{
printf("ACK CMD CAM stop video streaming.\r\n");
stop = 0;
Camera_WorkMode = 0;
start_shoot = 0;
}
send_OK=false;
SingleCapTransfer();
}
if(receive_OK)
{
receive_OK= 0;
SendbyUSART1();
}
}
}
else if(Camera_WorkMode == 3)
{
if(start_shoot == 3)
{
start_shoot = 0;
Camera_WorkMode = 0;
StartBMPcapture();
}
}
}
}
Program output:
