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gpio: initial implementation of interupt handling on gpio

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2014-05-07 14:48:21 +01:00
parent 91e37a7982
commit 37b5d9f0cc
5 changed files with 243 additions and 11 deletions
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12
examples/CMakeLists.txt
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@@ -3,11 +3,13 @@ add_executable (hellomaa hellomaa.c)
add_executable (cycle-pwm3 cycle-pwm3.c)
add_executable (blink-io8 blink-io8.c)
add_executable (analogin_a0 analogin_a0.c)
add_executable (isr_pin6 isr_pin6.c)
include_directories(${PROJECT_SOURCE_DIR}/api ${PROJECT_SOURCE_DIR}/include)
target_link_libraries (hellomaa maa)
target_link_libraries (i2c_HMC5883L maa m)
target_link_libraries (cycle-pwm3 maa)
target_link_libraries (blink-io8 maa)
target_link_libraries (analogin_a0 maa)
target_link_libraries (hellomaa maa ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (i2c_HMC5883L maa m ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (cycle-pwm3 maa ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (blink-io8 maa ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (analogin_a0 maa ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries (isr_pin6 maa ${CMAKE_THREAD_LIBS_INIT})

64
examples/isr_pin6.c Normal file
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@@ -0,0 +1,64 @@
/*
* Author: Brendan Le Foll
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include "gpio.h"
static volatile int counter = 0;
static volatile int oldcounter = 0;
void interrupt (void) {
++counter;
}
int main ()
{
maa_init();
maa_gpio_context* x;
x = maa_gpio_init(6);
if (x == NULL) {
return 1;
}
maa_gpio_dir(x, MAA_GPIO_IN);
gpio_edge_t edge = MAA_GPIO_EDGE_BOTH;
maa_gpio_isr(x, edge, &interrupt);
for(;;) {
if(counter != oldcounter) {
fprintf(stdout, "timeout counter == %d\n", counter);
oldcounter = counter;
}
// got to relieve our poor CPU!
sleep(1);
}
maa_gpio_close(x);
return MAA_SUCCESS;
}