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I want the equivalent of fgets(), and was going to write this using serialGetchar but the timeout caused problems, requiring post processing. I realised the required functionality was already in the …

You may be interested in the following. http://wiringpi.com/reference/priority-interrupts-and-threads/ I have used int wiringPiISR (int pin, int edgeType, void (*function)(void)) ; in some of my cod …

The DHT11/22 family have rather critical timing constraints. While there are many libraries purporting to support these, and it is relatively simple on an Arduino, the nature of the Raspberry Pi Linux …

It is much easier to use the wiringSerial module from wiringPi, but if you must do it the hard way tab should be a buffer e.g. char tab[128] not a single char. It looks like you are sending random ju …

As @joan states wiringpi has a wiringSerial library which includes a number of functions (which are easier than using fcntl). E.g. it provides serialOpen etc. Unfortunately no serialGets although I h …

It is unrealistic to expect a "tenfold" increase. There are many ways of communicating with the Pico (all the usual suspects in fact). You may be interested in Pico as a computer peripheral.

AFAIK this is not possible (I am assuming Pico GPIO similar to Pi based on limited experience) as there is no command to Tri-state. What other applications do is put in INPUT mode which is high impeda …

I have since written a new dynamic library in C and a Python overlay pi-gpio & pi_gpio which makes this obsolete. …

The pi-gpio dynamic C library to control GPIO is now at Release 1.4 Includes a socket interface to the pi-gpio dynamic C library to control Raspberry Pi GPIO. … Functionality Supported pi-gpio A dynamic C library to control Raspberry Pi GPIO channels A fast dynamic C library to control Raspberry Pi GPIO channels Supports all production models available in September …

I have never used i2c-smbus although I have written code in python and c to use I²C using the kernel driver either directly in c or python smbus library. …

The pigpio library is written in C and the pigpio daemon offers a socket and pipe interface to the underlying C library. pigpio is probably the most capable library for the Raspberry Pi and offers a number … The C library is not conventionally accessible. Your C program actually becomes the pigpio daemon when you run it, effectively blocking access to other programs. …

All of the functions are in c, but are usable from c++ because of the included #ifdef __cplusplus extern "C" { #endif There is some software by Gert van Loo (supplied with the gertboard) which enables …

Your code won't run - you don't even have a main() and never call wiringPiSetup. I can't figure out what your circuit is even trying to achieve. You have to make up your mind whether you are asking …

AFAIK WiringPi should be included in latest Raspbian. If you have the gpio utility it is there (as gpio is a WiringPi utility).

You can certainly read multiple bytes using read. The comments about FIFO are misleading, even though they are important to ensure high speed troughput, are inaccessable. The kernel drivers almost c …