DevHeads IoT Integration Server•4mo ago

Configuring SPI Communication on ESP32 for Transmitting Images from OV2640 Camera Module

in continuation with my project Object Detection with MicroPython and OV2640 Camera Module Using ESP-WROOM-32. How do i configure SPI communication on the ESP32 for transmitting images captured by the OV2640 camera?

Solution:

@Enthernet Code for transmitting images captured by the OV2640, you'll want to set up the camera to capture images in a format that can be efficiently transmitted over SPI. the OV2640 can output images in JPEG format, which is compressed and more manageable in size, after capturing an image, you can send it over SPI using something like this: ```python def send_image(image_data): cs.value(0) # Select the SPI device spi.write(image_data) # Transmit the image data...

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4 Replies

nour_oud•4mo ago

Object Detection project: https://discord.com/channels/1130679493799977062/1270411869647143043

Alien Queen•4mo ago

make sure the SPI pins are configured correctly. The ESP32 has multiple SPI buses (HSPI and VSPI), and you can use either depending on your wiring. Here’s an example of h0w it should look like

from machine import SPI, Pin

spi = SPI(1, baudrate=10000000, polarity=0, phase=0, sck=Pin(18), mosi=Pin(23), miso=Pin(19))

cs = Pin(5, Pin.OUT)

cs.value(1)

from machine import SPI, Pin

spi = SPI(1, baudrate=10000000, polarity=0, phase=0, sck=Pin(18), mosi=Pin(23), miso=Pin(19))

cs = Pin(5, Pin.OUT)

cs.value(1)

Solution

RED HAT•4mo ago

def send_image(image_data):
    cs.value(0)  # Select the SPI device
    spi.write(image_data)  # Transmit the image data
    cs.value(1)  # Deselect the SPI device

image_data = capture_image()

send_image(image_data)

def send_image(image_data):
    cs.value(0)  # Select the SPI device
    spi.write(image_data)  # Transmit the image data
    cs.value(1)  # Deselect the SPI device

image_data = capture_image()

send_image(image_data)

Remember, you'll need to implement or use an existing library to interface with the OV2640 in MicroPython. This will handle image capture and any necessary configuration of the camera module.

Enthernet Code•4mo ago

thanks @Alien Queen & @RED HAT i would do this now

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Configuring SPI Communication on ESP32 for Transmitting Images from OV2640 Camera Module