Please ignore my latest post then! if (two_pulse .00185) It looks like I can use value 505 as the clock divider. Linux doesn’t like that. I have tried hooking up a logic analyser on the SDA and SCL pins. It sounds like you’re mostly sorted from reading the next post – but wiringPiSetup() gives you wiringPi pin numbers, and wiringPiSetupGpio() gives you BCM_GPIO pin numbers.
Any chance you could make a Python API version please?

Lazarus/FreePascal wrapper: Though for me that’s as big a leap as going to bare metal, as you can tell from my convoluted setup. Thanks again for your help in getting to the bottom of it… I can actually start putting it to use now . (Although looking at the audio drivers might be helpfull here!). You write, that it is possible to use the BCM GPIO pin numbering istead of the “easy Arduino” numbering. It could be a lot more efficient if you have just one C program to monitor all the inputs, but then, it looks like you’re using stdout to communicate back to your (Python?) wiringpi.wiringPiSetu So polling should be the best solution and not using interupts? two_pulse = (double)(two_time.tv_usec – one_time.tv_usec)/1000000; DragonBoard™ and managing an LED. Drogon uses a few tricks to decouple controllers from the main program. This is an extract from the code on that page accessing the internal timer. Thanks again! 15 Jan 2013) on Arch Linux. piBoardRev: Returning revision: 2 http://www.lazarus.freepascal.org/index.php/topic,17404.0.html. chanBits = 0x30 ; // gain x1 , active, channel A | 16 | 15 | 10 | RxD | ALT0 | High | Additional information can be found on the Raspberry Pi Wiki pages.
Do you get any errors? So you could sample for a given period of time, then sample again and again, then compare the 3 samples – the 2 closest to each other are probably the frequency you’re after…. detailed. values = {‘devid’: key} Every contribution is welcome. DragoNN is a toolkit to teach and learn about deep learning for genomics. pain by jumping off the next tall bridge.

if high time++ 보통 토큰화 모듈이나 문법 분석기를 만들 때, Flex(어휘분석기) 와 bison(파서 생성기) 같은 컴파일러 생성기 도구들을 이용해서 만든다. gonna try that. else I have actually written a new module in wiringPi for servos, but I know it will suffer from the same jitter my softwarePWM does. The IO board itself looks simple enough though. I don’t have the necessary tools right now to test it out. If you are attempting to cross compile you application, you need to ensure that wiringPi is also cross compiled.

checkstatus2 = 0; while (1) Its code to allows I2C Interfacing and seems implemented just like your library. been asking Google and find some library precompiled for Arch in

I’am working for the first time with Makefiles. gpio: Unable to initialise wiringPi mode. The dialog is written, I know that some people might be frustrated that they would have translated, a certain element of the game differently, but this would be the case for, any translation style. I have got a L3G4200D Gyroscope Breakout Board (http://www.pololu.com/catalog/product/1272), that can also communicate over I2C. | 9 | 1 | 5 | SCL | OUT | Low | ON = preview, OFF = no preview. thank you for your really nice work.

Press escape to cancel the reordering. Brilliant project! ); if ((long)timer_map >2)); // the value of free running counter | 11 | 7 | 26 | CE1 | IN | High | I have installed wiringpi on my raspberrypi and am using a sample from http://www.raspberrypi.org/phpBB3/viewtopic.php?t=16118&p=191051 to control 4 motors that I have linked to using http://shieldlist.org/adafruit/motor. I’d suggest sticking to the wiringPi pin numbers if you can – they’ll cope with the pin changes from the Rev 1 to the Rev 2 boards, but if you are using the native numbers, just be aware of the board revision you’re running on. if ((unsigned long)timer_mem % PAGE_SIZE) I’ve avoiding the UART as I need an “IDLE on low” serial connection and inverting the logic didn’t seem to work. I do’t know how that RF transciever works though, so can’t comment directly on it. Thanks for your pointer to wfi.c, unfortunately I couldn’t get any result from it, but I wasn’t sure if it was expecting the rpi pin 0 or bcm pin 0, however it could be my button circuit. return -1 ;

if so, write time var to textfile then set time to 0 echo 24 > /sys/class/gpio/export Thanx. bits = 0; { after some inspection, my i2c-dev.h use ioctl command. Adding PATH=/usr/local/bin:$PATH before the gpio calls fixed the problem. char *timer_mem, *timer_map; // Access to the ARM timer http://elinux.org/RPi_Low-level_peripherals, if ((long)gpio_map < 0) { The problem I have is the part to count the time from rising edge to falling edge on the input and output that time (in ms) to a textfile. We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. # Short Description: Export Pins


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