Hi André, I updated my Pi setup to add the second LED and switch, and your example works for me. I did notice that when I power off the Rapberry Pi, then power it back on, the second LED will remain lit and cause interrupts in the RTEMS program. If I leave the Pi powered off for a little while, it works as intended. I don't think this is an RTEMS problem. The good news is that the RTEMS app continues to run and handle the interrupts, so it is stable.
I will experiment with different button and LED combinations in the next few days. When you have an I2C driver to try, I have a number of I2C devices to interface. I will have to find an SPI device to try out. Something like this: https://www.adafruit.com/product/1897 Or https://www.adafruit.com/product/1900 A question about the examples ( maybe not for Andre ): Can we keep Board/BSP specific tests in the testsuites/samples directory? Alan On Sat, Jul 5, 2014 at 6:58 PM, Andre Marques <andre.lousa.marq...@gmail.com > wrote: > Hello, > > The Raspberry Pi GPIO interrupts are already working, and a test case is > available to test that [1]. A function is also provided to debounce a > switch if needed. The test case requires two switches and two LEDS using > the same setup described at [2] by only changing the pin numbers. > > The test works by setting interrupts on both edges of the switches, which > handlers will turn on or off the corresponding LED. One of the LEDs also > has a level interrupt which prints a message on the screen when the LED is > on (high level). > > While I wait for some feedback on that, I will be looking at the next > step: the I2C interface. To test both the I2C and the SPI interfaces I have > here a simple display [3]. The idea is to create a low level driver for I2C > to provide the needed directives for the libi2c API, so the driver for the > display will actually use the libi2c API. Any thoughts here are welcome too! > > Thanks, > André Marques. > > [1] - https://github.com/asuol/rtems/blob/GPIO_API/ > testsuites/samples/LIBGPIO_TEST_IQR/init.c > [2] - http://asuolgsoc2014.wordpress.com/2014/06/22/testing-the-gpio-api/ > [3] - http://www.newhavendisplay.com/nhd0216k3zflgbwv3-p-5738.html >
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