What is bit banging in embedded?

In computer engineering and electrical engineering, bit banging is slang for any method of data transmission that employs software as a substitute for dedicated hardware to generate transmitted signals or process received signals.

What is bit banging in I2C?

The I2C bit banging is a technique for serial communi- cations using software instead of a dedicated hardware module. This means that the code controls the state of the MCU pins, related to all parameters of the signals: timing, levels and synchronization.

What is the use of SPI on embedded board?

Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to choose the device you wish to talk to.

What is I2C in embedded system?

The name I2 C is shorthand for a standard Inter-IC (integrated circuit) bus. I2 C provides good support for communication with various slow, on-board peripheral devices that are accessed intermittently, while being extremely modest in its hardware resource needs. It is a simple, low-bandwidth, short-distance protocol.

Should I use MSSP for SPI or bit-bang I2C?

Though SPI is typically simpler to bit-bang (especially in master mode) it can take a toll on the data rate, which was more important in my application. Thus I can use the dedicated MSSP for SPI, then bit-bang I2C on any two free GPIO pins.

How to bit bang over SPI in Arduino?

Go to 2 till all data bits have been transmitted. Set the SS pin High to stop transmission. As an example, let’s implement the algorithm for SPI communication via bit banging in Arduino to show how data can be bit-banged over SPI using the code below. We start by declaring the pins of the Arduino to be used.

Is bitbanging possible in a non-interruptable system?

Bit banging is not quite possible in a non realtime system. And if you put it inside the kernel that is noninterruptable then you really have to make sure that you only bitbang a certain number of bits before rescheduling user processes. Consider this: you have a scheduling timer running at 1/1000s intervals.

What is bitbanging in microcontrollers?

Bit-Banging is usually used in situations where a microcontroller with the required interface is not available or when switching to a microcontroller with the required interface might be too expensive. It thus provides a cheap way of enabling the same device to communicate using several protocols.