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    BMP 280 Shuttle Board diagram

    HelloAll
    Occasional Visitor

    BMP 280 Shuttle Board diagram

    Looking at the BMP 280 shuttle board electrical layout, it is very difficult
    to read the signals in the provided diagram on page 2 of the BMP 280 Shuttle
    Board flyer. For example, it looks like three different pins are labelled
    SDI: 5, 16, 17, two different pins are labelled SDO: 4, 15, and two different
    pins are labelled SCK: 6 and 18!

    Can someone please provide the following information?

    (a) Which of the 28 pins are used when using the BMP280 shuttle board via
    the I2c interface? A list of the signal names and pin number assignments
    would be helpful along with noting the required input pin settings to
    indicate use of the I2C interface.


    (b) Which of the 28 pins are used when using the BMP280 shuttle board via
    the SPI interface? A list of the signal names and pin number assignments
    would be helpful along with noting the required input pin settings to
    indicate use of the SPI interface.

    (c) Why are there multiple pins labelled with the same signal name?

    2 REPLIES 2
    BSTRobin
    Community Moderator

    Re: BMP 280 Shuttle Board diagram

    Hello HelloALL,

    Shuttle board was designed to work with application board. Application board introduction, you could refer:

    https://www.bosch-sensortec.com/media/boschsensortec/downloads/software_tools/application_boards/bst...

    In the hardware design of application board and shuttle board, application board can choose to use SPI or I2C to communicate with shuttle board.

    If you use shuttle board and application board, HW connection was ready whether you use SPI or I2C.

    If you use shuttle board and other host HW board, actually you only need to care the following schematic from BMP280 data sheet. BMP280 8 pins were connected to 28 pins header, you could connect these pins to host HW board and start your SPI or I2C access.

    BMP280_SPI_Interface.pngBMP280_I2C_Interface.png

     

    Minhwan
    Community Moderator

    Re: BMP 280 Shuttle Board diagram

    Hello, 

     

    Here is my answer. 

    Number is pin based on shuttle board. 

    (a) 1 - VCC, 2- VCCIO ( okay connect to 1), 3 - GND, 18 - I2C clock, 17 - I2C data 4 - GND, 7 - VCC. 

    You can also check BMP280 datasheet in page 35.

    (b) 1 - VCC, 2- VCCIO ( okay connect to 1), 3 - GND, 4- MISO, 5- MOSI, 6- CLK, 7- CSB pin from MCU ( Chip select )

    (c) Shuttle board is our reference board, so all devices are compatible with shuttle board design. 

    That's why shuttle board has plenty of pins.And also we connect to shuttle board several pins from one chip set pin because of customer preference 🙂 

    Thanks, 

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