Has anyone found pleasant examples in either well documented source code or even video explanations? I was specially interested in exploring the I2C pins and found the excellent wiringPi library. On Raspberry Pi we’ll use the WiringPi library inside a Cpp code example. The Hat uses SPI0 with CS0 going to the CAN side. Raspberry MISO (pin 21) -> DOUT Raspberry MOSI (pin 19) -> PD_SCK Raspberry GND (pin 20) -> GND The four wires coming out from the wheatstone bridge on the load cell are usually: Excitation+ (E+) or VCC is red Excitation- (E-) or ground is black. If the string has a name, it survives to the end of scope for that name. The complete transaction consists of 3 bytes being transmitted from master (Raspberry Pi) to slave (MCP3008) and 3 bytes transmitted from slave to master. If you know C/C++ ( If you come from the Arduino world, for instance) and don’t want to bother learning another computing language, it is possible to program Raspberry Pi using C/C++. I've looked at wiringPi and other sources but they don't give much documentation with their source code as I would like. CS1 goes to the RS485 side. I have a new device that uses SPI also. The Raspberry Pi has three types of serial interface on the GPIO header. In this tutorial I’ll show you how to communicate between a Raspberry Pi 4 (also works with 3, 3B, 3B+) and an Arduino (Uno), using the SPI protocol. The Raspberry Pi will be configured as a master, and the Arduino as a slave. That is why I was looking for a C library that exposes Raspberry Pi GPIO pins for application layer. You're probably already familiar with the UART serial port, which allows you to open a login session from a serial terminal application, such as PuTTY. Raspberry Pi SPI and the Python library: Python is a very popular and flexible platform for writing the code in the Raspberry Pi. A complete SPI transaction for the MCP3008 (SPI mode 0) is depicted in Figure 4. On Raspberry Pi we’ll use the WiringPi library inside a Cpp code example. However, the line quoted just constructs a temporary string, and then calls c_str() on it, and then holds on to that, without giving the std::string a name. In this post, I will show step by step on how I use wiringPi library to read from the I2C interface of a 3-axis Accelerometer+Gyroscope module. Although almost all the necessary files and libraries has already been installed in the Raspbian to support the programming in the Python language but still there are some libraries missing. The intent of this article is to give you a very basic introduction to C programming on the Raspberry Pi. In this tutorial I’ll show you how to communicate between a Raspberry Pi 4 (also works with 3, 3B, 3B+) and an Arduino (Uno), using the SPI protocol. As I explore the sample code, initializing the bus uses the following code: spi=busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO) cs=digitalio.DigitalInOut(board.D5) I'm having trouble finding good CODE examples for the I2C/SPI programming on the Raspberry Pi using C++. Code the Classics - Volume 1 Build Your Own First-Person Shooter in Unity The official Raspberry Pi Projects Book - Volume 5 Book of Making - Volume 2 Find 100s more books and magazines in the Raspberry Pi Press shop The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). Jon W at . 6 years ago. These peripheral devices may be either sensors or actuators. I have a Waveshare Can/RS485 Hat on my Pi. Ressources for Raspberry PI are generally written for Python but, as a micro computer, other languages can be used. 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