Tests Using '2012-09-18-wheezy-raspbian.img' Using this code running: while (1) { bcm2835_gpio_write(RPI_GPIO_P1_13, 0); bcm2835_gpio_write(RPI_GPIO_P1_13, 1); } Running the application at the command prompt (no GUI) gave this on the pin: i.e. no significant process interruptions. Running the application inside the GUI (startx) with nothing else specific happening gave this: Very occasional process interruptions. Now starting the Midori browser […]
Category: Speed
IO Speed
Using this C code running as an exe on "2012-09-18-wheezy-raspbian.img": while (1) { bcm2835_gpio_write(RPI_GPIO_P1_13, 0); bcm2835_gpio_write(RPI_GPIO_P1_13, 1); } the pin output was this: See Also http://codeandlife.com/2012/07/03/benchmarking-raspberry-pi-gpio-speed/