Ardupilot2/libraries/AP_HAL_FLYMAPLE/examples/Semaphore/Semaphore.cpp
2015-11-20 12:30:55 +09:00

114 lines
2.3 KiB
C++

#include <AP_Common/AP_Common.h>
#include <AP_Math/AP_Math.h>
#include <AP_Param/AP_Param.h>
#include <AP_HAL/AP_HAL.h>
#include <AP_HAL_FLYMAPLE/AP_HAL_FLYMAPLE.h>
const AP_HAL::HAL& hal = AP_HAL::get_HAL();
/*
* You'll want to use a logic analyzer to watch the effects of this test.
* Define each of the pins below to the pins used during the test on your
* board.
*/
#define PIN_A0 15
#define PIN_A1 16
#define PIN_A2 17
#define PIN_A3 18
/**
* Create a Semaphore for this test.
*/
AP_HAL::Semaphore *sem;
void blink_a0() {
volatile int i;
hal.gpio->write(PIN_A0, 1);
for (i = 0; i < 10; i++);
hal.gpio->write(PIN_A0, 0);
}
void blink_a1() {
volatile int i;
hal.gpio->write(PIN_A1, 1);
for (i = 0; i < 10; i++);
hal.gpio->write(PIN_A1, 0);
}
void blink_a2() {
volatile int i;
hal.gpio->write(PIN_A2, 1);
for (i = 0; i < 10; i++);
hal.gpio->write(PIN_A2, 0);
}
void blink_a3() {
volatile int i;
hal.gpio->write(PIN_A3, 1);
for (i = 0; i < 10; i++);
hal.gpio->write(PIN_A3, 0);
}
void setup_pin(int pin_num) {
hal.console->printf("Setup pin %d\r\n", pin_num);
hal.gpio->pinMode(pin_num,HAL_GPIO_OUTPUT);
/* Blink so we can see setup on the logic analyzer.*/
hal.gpio->write(pin_num,1);
hal.gpio->write(pin_num,0);
}
void setup (void) {
hal.console->printf("Starting Semaphore test\r\n");
setup_pin(PIN_A0);
setup_pin(PIN_A1);
setup_pin(PIN_A2);
setup_pin(PIN_A3);
hal.console->printf("Using SPIDeviceManager builtin Semaphore\r\n");
AP_HAL::SPIDeviceDriver *dataflash = hal.spi->device(AP_HAL::SPIDevice_Dataflash); // not really
if (dataflash == NULL) {
AP_HAL::panic("Error: No SPIDeviceDriver!");
}
sem = dataflash->get_semaphore();
if (sem == NULL) {
AP_HAL::panic("Error: No SPIDeviceDriver semaphore!");
}
hal.scheduler->register_timer_process(async_blinker);
}
uint32_t async_last_run = 0;
void async_blinker(uint32_t millis) {
if (async_last_run - millis < 5) {
return;
}
if (sem->take_nonblocking()) {
blink_a0();
sem->give();
} else {
blink_a1();
}
}
void loop (void) {
if (sem->take(1)) {
blink_a2();
sem->give();
} else {
/* This should never happen: */
blink_a3();
}
}
AP_HAL_MAIN();