lms-esp32-pybricks-info

The Pixy2 camera can be connected with different interfaces to the LMS-ESP32 board.

Below examples read the version info.

SPI

from machine import Pin, SoftSPI
pixy = SoftSPI(baudrate=1000000, sck=Pin(13), mosi=Pin(14), miso=Pin(12))
pixy.write(bytes.fromhex('aec10e00'))
print(pixy.read(32))

• configuration: PixyMon->Configure->Interface=Arduino ICSP SPI
• returns 0x01 bytes ~ each millisecond. response starts after 7 to 8 0x01 bytes.

I2C

from machine import Pin, SoftI2C
pixy = SoftI2C(freq=1000000, scl=Pin(13), sda=Pin(14))
print(pixy.scan())
pixy.writeto(84, bytes.fromhex('aec10e00'))
print(pixy.readfrom(84, 22))

• configuration: PixyMon->Configure->Interface=I2C + default adress=0x54
• SDA and SCL need a 3k3 pullup each to 3.3V

Serial

from machine import Pin, UART
pixy = UART(1, baudrate=115200, rx=Pin(13), tx=Pin(14), timeout=20)
pixy.write(bytes.fromhex('aec10e00'))
print(pixy.read(22)) # min timeout=10, no response before

• configuration: PixyMon->Configure->Interface=UART + 115200
• slowest solution