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What is the difference between board and BCM for GPIO pin numbering?
GPIO BOARD– This type of pin numbering refers to the number of the pin in the plug, i.e, the numbers printed on the board, for example, P1. GPIO BCM– The BCM option refers to the pin by “Broadcom SOC Channel. They signify the Broadcom SOC channel designation. The BCM channel changes as the version number changes.
Does GPIO have pin?
A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board which may be used as an input or output, or both, and is controllable by the user at runtime. GPIOs have no predefined purpose and are unused by default.
What is a BCM pin?
BCM — Broadcom chip-specific pin numbers. These pin numbers follow the lower-level numbering system defined by the Raspberry Pi’s Broadcom-chip brain.
What is the use of GPIO pin?
A GPIO (general-purpose input/output) port handles both incoming and outgoing digital signals. As an input port, it can be used to communicate to the CPU the ON/OFF signals received from switches, or the digital readings received from sensors.
What’s the difference between BCM and GPIO pins?
The GPIO.BCM option means that you are referring to the pins by the “Broadcom SOC channel” number, these are the numbers after “GPIO” in the green rectangles around the outside of the below diagrams: Unfortunately the BCM numbers changed between versions of the Pi1 Model B,…
What does BCM mean on a Raspberry Pi?
The GPIO.BCM option means that you are referring to the pins by the “Broadcom SOC channel” number, these are the numbers after “GPIO” in the green rectangles around the outside of the below diagrams:
What are the different types of GPIO pins?
In the early days (even before hardware was available) the default usable GPIO pins were simply referred to by number as GPIO0 through GPIO7. Additionally there were pins for other purposes, SPI, I2C and serial.
How does GPIO work on a Raspberry Pi?
The GPIO.BOARD option specifies that you are referring to the pins by the number of the pin the the plug – i.e the numbers printed on the board (e.g. P1) and in the middle of the diagrams below.