iwatake2222 / digitalcamera_stm32

This is a project to create a digital camera with STM32 and OV7670

Digital Camera with STM32F4 Discovery board

This is a project to create a digital camera with STM32

Link to YouTube	Link to Design Document

Specifications

• Still photo capture
  • Live view (around 20 fps)
  • JPEG (*.jpg)
  • QVGA (320x240)
• Movie record
  • Motion JPEG (*.avi)
  • QVGA (320x240)
  • Around 5 fps
• Playback
  • JPEG (up to 2560x1920)
  • RGB565 (320x240)
  • Motion JPEG (around 10 fps)
• Media
  • SD Card (FAT32 format only?, 8GB ~ 16GB of SD card works well)
• How to Control

Hardware

Key Components

• STM32F4 Discovery Board
  • STM32F407 VGT (Cortex-M4), (purchased from 秋月)
• Display module
  • ILI9341 controller, 16-bit parallel I/F, (purchased from aitendo)
• Camera module
  • OV7670 without FIFO

Hardware Connection

Port assign

Software

Software Developement Environment

• IDE: SW4STM32 (System Workbench for STM32)
• STM32 Library: HAL with STM32 CubeMX
• External Library: FreeRTOS, FatFS, LibJPEG

Software Architecture

Portmap

## IO
PA00 = ROTARY_A (TIM5_CH1)	! pulled-up on board
PA01 = ROTARY_B (TIM5_CH2)
PA02 = USART2 (TX)
PA03 = USART2 (RX)
PA04 = CAMERA_HS(DCMI_HSYNC)
PA05 = SD_CARD(SPI1_SCK)
PA06 = CAMERA_PCLK(DCMI_PIXCK)
PA07 = SD_CARD(SPI1_MOSI)
PA08 = CAMERA_MCLK(MCO1)
PA09 = [VBUS_FS]
PA10 = [OTG_FS_ID]
PA11 = [OTG_FS_DM]
PA12 = [OTG_FS_DP]
PA13 = [SWDIO]
PA14 = [SWCLKDebug]
PA15 = SD_CARD(SPI1_NSS(SW control))

PB00 = N/A
PB01 = N/A
PB02 = [BOOT]
PB03 = [SWO]
PB04 = SD_CARD(SPI1_MISO)
PB05 = N/A
PB06 = CAMERA_D5(DCMI_D5)
PB07 = CAMERA_VS(DCMI_VSYNC)
PB08 = CAMERA_D6(DCMI_D6)
PB09 = CAMERA_D7(DCMI_D7)
PB10 = CAMERA(I2C2_SCL)
PB11 = CAMERA(I2C2_SDA)
PB12 = N/A
PB13 = N/A
PB14 = N/A
PB15 = N/A

PC00 = [OTG_FS_PowerSW]  !Don't use
PC01 = BUTTON1
PC02 = BUTTON2
PC03 = BUTTON3
PC04 = N/A
PC05 = CAMERA_RESET
PC06 = CAMERA_D0(DCMI_D0)
PC07 = CAMERA_D1(DCMI_D1)
PC08 = CAMERA_D2(DCMI_D2)
PC09 = CAMERA_D3(DCMI_D3)
PC10 = [CS43L22_SCLK]   !Don't use
PC11 = CAMERA_D4(DCMI_D4)
PC12 = [CS43L22_SDIN]   !Don't use
PC13 = N/A
PC14 = [OSC32_IN]
PC15 = [OSC32_IN]

PD00 = LCD_D2(FSMC_D2)
PD01 = LCD_D3(FSMC_D3)
PD02 = N/A
PD03 = N/A
PD04 = LCD_RD(FSMC_NOE)
PD05 = LCD_WD(FSMC_NWE)
PD06 = N/A
PD07 = LCD_CS(FSMC_NE1)
PD08 = LCD_D13(FSMC_D13)
PD09 = LCD_D14(FSMC_D14)
PD10 = LCD_D15(FSMC_D15)
PD11 = LCD_RS(FSMC_A16)
PD12 = LED
PD13 = LED
PD14 = LED,  LCD_D0(FSMC_D0)
PD15 = LED,  LCD_D1,(FSMC_D1)

PE00 = [LIS302DL_INT1]  !Don't use
PE01 = [LIS302DL_INT2]  !Don't use
PE02 = [LIS302DL_CS]    !Always HIGH
PE03 = N/A
PE04 = N/A
PE05 = N/A
PE06 = N/A
PE07 = LCD_D4(FSMC_D4)
PE08 = LCD_D5(FSMC_D5)
PE09 = LCD_D6(FSMC_D6)
PE10 = LCD_D7(FSMC_D7)
PE11 = LCD_D8(FSMC_D8)
PE12 = LCD_D9(FSMC_D9)
PE13 = LCD_D10(FSMC_D10)
PE14 = LCD_D11(FSMC_D11)
PE15 = LCD_D12(FSMC_D12)


## Function
USART2 = TERMINAL
SPI1   = SD CARD
I2C2   = CAMERA(OV7670)
FSMC   = LCD(ILI9341)
DCMI   = CAMERA(OV7670)
TIMER5_CH1/2 = Rotary Encoder

## DMA
DMA1_5 = USART2_RX
DMA2_1 = CAMERA(DCMI->FSMC(LCD))

## OSC
PH0 = OSC_IN   (external 8MHz)
PH1 = OSC_OUT  (external 8MHz)

## Note
LCD_RESET    = VDD
CAMERA_PWDN  = GND

digitalcamera_stm32's Issues

Great project but I can't get SCCB to work!!

Call stack goes:
ov7670_init
ov7670_write
HAL_I2C_Mem_Write
I2C_RequestMemoryWrite
I2C_WaitOnMasterAddressFlagUntilTimeout <-- fails with timeout

Logic analyser says there is a NACK instead of ACK (as expected) but how do I ignore this condition? Only the address part of the transaction is completed.

Can't Get The Camera To Work

I'm facing the same issue as described here. However, in my case, both the HAL_I2C_Mem_Write and HAL_I2C_Master_Transmit are failing while reaching the I2C_WaitOnMasterAddressFlagUntilTimeout One thing to note here is that I'm not getting a timeout failure, rather a acknowledge failure in the below snippet:

while (__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
  {
    if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) <--- Fulfills this if condition
    {
      /* Generate Stop */
      SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);

      /* Clear AF Flag */
      __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);

      hi2c->PreviousState       = I2C_STATE_NONE;
      hi2c->State               = HAL_I2C_STATE_READY;
      hi2c->Mode                = HAL_I2C_MODE_NONE;
      hi2c->ErrorCode           |= HAL_I2C_ERROR_AF;

      /* Process Unlocked */
      __HAL_UNLOCK(hi2c);

      return HAL_ERROR;  <----- Fails here
    }
....
}

Any help regarding the same will be very appreciated.

Excule me， I want to ask you a question

When I was studying your project,encountered a problem that I didn't quite understand.

This is log:
[LV_CTRL:141] input: 1 0
[LV_CTRL:319] Single Capture Start
[LV_CTRL:326] create IMG005.JPG
Output file write error --- out of disk space?
Improper call to JPEG library in state 0

I hope to receive your reply.
Thank you!
@iwatake2222

ov7670_read, ov7670_write

What is the purpose of the condition in do-while loop (ret != HAL_OK && 0),
it seems loop continue only 1 time.

Can I capture image and send server with sim800l

I need to capture the image and send it to the server with the sim800l gsm module. I can handle sim800l, but How can I capture images with a camera and in what way should I send them?