mirror of https://github.com/ArduPilot/ardupilot
337 lines
8.2 KiB
C++
337 lines
8.2 KiB
C++
/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
|
|
|
|
#include <AP_HAL.h>
|
|
#if CONFIG_HAL_BOARD == HAL_BOARD_VRBRAIN
|
|
|
|
#include "AP_HAL_VRBRAIN.h"
|
|
#include "Scheduler.h"
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <sched.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <drivers/drv_hrt.h>
|
|
#include <nuttx/arch.h>
|
|
#include <systemlib/systemlib.h>
|
|
#include <pthread.h>
|
|
#include <poll.h>
|
|
|
|
#include "UARTDriver.h"
|
|
#include "AnalogIn.h"
|
|
#include "Storage.h"
|
|
#include "RCOutput.h"
|
|
#include "RCInput.h"
|
|
|
|
using namespace VRBRAIN;
|
|
|
|
extern const AP_HAL::HAL& hal;
|
|
|
|
extern bool _vrbrain_thread_should_exit;
|
|
|
|
VRBRAINScheduler::VRBRAINScheduler() :
|
|
_perf_timers(perf_alloc(PC_ELAPSED, "APM_timers")),
|
|
_perf_io_timers(perf_alloc(PC_ELAPSED, "APM_IO_timers")),
|
|
_perf_delay(perf_alloc(PC_ELAPSED, "APM_delay"))
|
|
{}
|
|
|
|
void VRBRAINScheduler::init(void *unused)
|
|
{
|
|
_sketch_start_time = hrt_absolute_time();
|
|
|
|
_main_task_pid = getpid();
|
|
|
|
// setup the timer thread - this will call tasks at 1kHz
|
|
pthread_attr_t thread_attr;
|
|
struct sched_param param;
|
|
|
|
pthread_attr_init(&thread_attr);
|
|
pthread_attr_setstacksize(&thread_attr, 2048);
|
|
|
|
param.sched_priority = APM_TIMER_PRIORITY;
|
|
(void)pthread_attr_setschedparam(&thread_attr, ¶m);
|
|
pthread_attr_setschedpolicy(&thread_attr, SCHED_FIFO);
|
|
|
|
pthread_create(&_timer_thread_ctx, &thread_attr, (pthread_startroutine_t)&VRBRAIN::VRBRAINScheduler::_timer_thread, this);
|
|
|
|
// the UART thread runs at a medium priority
|
|
pthread_attr_init(&thread_attr);
|
|
pthread_attr_setstacksize(&thread_attr, 2048);
|
|
|
|
param.sched_priority = APM_UART_PRIORITY;
|
|
(void)pthread_attr_setschedparam(&thread_attr, ¶m);
|
|
pthread_attr_setschedpolicy(&thread_attr, SCHED_FIFO);
|
|
|
|
pthread_create(&_uart_thread_ctx, &thread_attr, (pthread_startroutine_t)&VRBRAIN::VRBRAINScheduler::_uart_thread, this);
|
|
|
|
// the IO thread runs at lower priority
|
|
pthread_attr_init(&thread_attr);
|
|
pthread_attr_setstacksize(&thread_attr, 2048);
|
|
|
|
param.sched_priority = APM_IO_PRIORITY;
|
|
(void)pthread_attr_setschedparam(&thread_attr, ¶m);
|
|
pthread_attr_setschedpolicy(&thread_attr, SCHED_FIFO);
|
|
|
|
pthread_create(&_io_thread_ctx, &thread_attr, (pthread_startroutine_t)&VRBRAIN::VRBRAINScheduler::_io_thread, this);
|
|
}
|
|
|
|
uint32_t VRBRAINScheduler::micros()
|
|
{
|
|
return (uint32_t)(hrt_absolute_time() - _sketch_start_time);
|
|
}
|
|
|
|
uint32_t VRBRAINScheduler::millis()
|
|
{
|
|
return hrt_absolute_time() / 1000;
|
|
}
|
|
|
|
/**
|
|
delay for a specified number of microseconds using a semaphore wait
|
|
*/
|
|
void VRBRAINScheduler::delay_microseconds_semaphore(uint16_t usec)
|
|
{
|
|
sem_t wait_semaphore;
|
|
struct hrt_call wait_call;
|
|
sem_init(&wait_semaphore, 0, 0);
|
|
hrt_call_after(&wait_call, usec, (hrt_callout)sem_post, &wait_semaphore);
|
|
sem_wait(&wait_semaphore);
|
|
}
|
|
|
|
void VRBRAINScheduler::delay_microseconds(uint16_t usec)
|
|
{
|
|
perf_begin(_perf_delay);
|
|
if (usec >= 500) {
|
|
delay_microseconds_semaphore(usec);
|
|
perf_end(_perf_delay);
|
|
return;
|
|
}
|
|
uint32_t start = micros();
|
|
uint32_t dt;
|
|
while ((dt=(micros() - start)) < usec) {
|
|
up_udelay(usec - dt);
|
|
}
|
|
perf_end(_perf_delay);
|
|
}
|
|
|
|
void VRBRAINScheduler::delay(uint16_t ms)
|
|
{
|
|
if (in_timerprocess()) {
|
|
::printf("ERROR: delay() from timer process\n");
|
|
return;
|
|
}
|
|
perf_begin(_perf_delay);
|
|
uint64_t start = hrt_absolute_time();
|
|
|
|
while ((hrt_absolute_time() - start)/1000 < ms &&
|
|
!_vrbrain_thread_should_exit) {
|
|
delay_microseconds_semaphore(1000);
|
|
if (_min_delay_cb_ms <= ms) {
|
|
if (_delay_cb) {
|
|
_delay_cb();
|
|
}
|
|
}
|
|
}
|
|
perf_end(_perf_delay);
|
|
if (_vrbrain_thread_should_exit) {
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void VRBRAINScheduler::register_delay_callback(AP_HAL::Proc proc,
|
|
uint16_t min_time_ms)
|
|
{
|
|
_delay_cb = proc;
|
|
_min_delay_cb_ms = min_time_ms;
|
|
}
|
|
|
|
void VRBRAINScheduler::register_timer_process(AP_HAL::MemberProc proc)
|
|
{
|
|
for (uint8_t i = 0; i < _num_timer_procs; i++) {
|
|
if (_timer_proc[i] == proc) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (_num_timer_procs < VRBRAIN_SCHEDULER_MAX_TIMER_PROCS) {
|
|
_timer_proc[_num_timer_procs] = proc;
|
|
_num_timer_procs++;
|
|
} else {
|
|
hal.console->printf("Out of timer processes\n");
|
|
}
|
|
}
|
|
|
|
void VRBRAINScheduler::register_io_process(AP_HAL::MemberProc proc)
|
|
{
|
|
for (uint8_t i = 0; i < _num_io_procs; i++) {
|
|
if (_io_proc[i] == proc) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (_num_io_procs < VRBRAIN_SCHEDULER_MAX_TIMER_PROCS) {
|
|
_io_proc[_num_io_procs] = proc;
|
|
_num_io_procs++;
|
|
} else {
|
|
hal.console->printf("Out of IO processes\n");
|
|
}
|
|
}
|
|
|
|
void VRBRAINScheduler::register_timer_failsafe(AP_HAL::Proc failsafe, uint32_t period_us)
|
|
{
|
|
_failsafe = failsafe;
|
|
}
|
|
|
|
void VRBRAINScheduler::suspend_timer_procs()
|
|
{
|
|
_timer_suspended = true;
|
|
}
|
|
|
|
void VRBRAINScheduler::resume_timer_procs()
|
|
{
|
|
_timer_suspended = false;
|
|
if (_timer_event_missed == true) {
|
|
_run_timers(false);
|
|
_timer_event_missed = false;
|
|
}
|
|
}
|
|
|
|
void VRBRAINScheduler::reboot(bool hold_in_bootloader)
|
|
{
|
|
systemreset(hold_in_bootloader);
|
|
}
|
|
|
|
void VRBRAINScheduler::_run_timers(bool called_from_timer_thread)
|
|
{
|
|
if (_in_timer_proc) {
|
|
return;
|
|
}
|
|
_in_timer_proc = true;
|
|
|
|
if (!_timer_suspended) {
|
|
// now call the timer based drivers
|
|
for (int i = 0; i < _num_timer_procs; i++) {
|
|
if (_timer_proc[i] != NULL) {
|
|
_timer_proc[i]();
|
|
}
|
|
}
|
|
} else if (called_from_timer_thread) {
|
|
_timer_event_missed = true;
|
|
}
|
|
|
|
// and the failsafe, if one is setup
|
|
if (_failsafe != NULL) {
|
|
_failsafe();
|
|
}
|
|
|
|
// process analog input
|
|
((VRBRAINAnalogIn *)hal.analogin)->_timer_tick();
|
|
|
|
_in_timer_proc = false;
|
|
}
|
|
|
|
void *VRBRAINScheduler::_timer_thread(void)
|
|
{
|
|
while (!_hal_initialized) {
|
|
poll(NULL, 0, 1);
|
|
}
|
|
while (!_vrbrain_thread_should_exit) {
|
|
delay_microseconds_semaphore(1000);
|
|
|
|
// run registered timers
|
|
perf_begin(_perf_timers);
|
|
_run_timers(true);
|
|
perf_end(_perf_timers);
|
|
|
|
// process any pending RC output requests
|
|
((VRBRAINRCOutput *)hal.rcout)->_timer_tick();
|
|
|
|
// process any pending RC input requests
|
|
((VRBRAINRCInput *)hal.rcin)->_timer_tick();
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void VRBRAINScheduler::_run_io(void)
|
|
{
|
|
if (_in_io_proc) {
|
|
return;
|
|
}
|
|
_in_io_proc = true;
|
|
|
|
if (!_timer_suspended) {
|
|
// now call the IO based drivers
|
|
for (int i = 0; i < _num_io_procs; i++) {
|
|
if (_io_proc[i] != NULL) {
|
|
_io_proc[i]();
|
|
}
|
|
}
|
|
}
|
|
|
|
_in_io_proc = false;
|
|
}
|
|
|
|
void *VRBRAINScheduler::_uart_thread(void)
|
|
{
|
|
while (!_hal_initialized) {
|
|
poll(NULL, 0, 1);
|
|
}
|
|
while (!_vrbrain_thread_should_exit) {
|
|
delay_microseconds_semaphore(1000);
|
|
|
|
// process any pending serial bytes
|
|
((VRBRAINUARTDriver *)hal.uartA)->_timer_tick();
|
|
((VRBRAINUARTDriver *)hal.uartB)->_timer_tick();
|
|
((VRBRAINUARTDriver *)hal.uartC)->_timer_tick();
|
|
((VRBRAINUARTDriver *)hal.uartD)->_timer_tick();
|
|
((VRBRAINUARTDriver *)hal.uartE)->_timer_tick();
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void *VRBRAINScheduler::_io_thread(void)
|
|
{
|
|
while (!_hal_initialized) {
|
|
poll(NULL, 0, 1);
|
|
}
|
|
while (!_vrbrain_thread_should_exit) {
|
|
poll(NULL, 0, 1);
|
|
|
|
// process any pending storage writes
|
|
((VRBRAINStorage *)hal.storage)->_timer_tick();
|
|
|
|
// run registered IO processes
|
|
perf_begin(_perf_io_timers);
|
|
_run_io();
|
|
perf_end(_perf_io_timers);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void VRBRAINScheduler::panic(const prog_char_t *errormsg)
|
|
{
|
|
write(1, errormsg, strlen(errormsg));
|
|
write(1, "\n", 1);
|
|
hal.scheduler->delay_microseconds(10000);
|
|
_vrbrain_thread_should_exit = true;
|
|
exit(1);
|
|
}
|
|
|
|
bool VRBRAINScheduler::in_timerprocess()
|
|
{
|
|
return getpid() != _main_task_pid;
|
|
}
|
|
|
|
bool VRBRAINScheduler::system_initializing() {
|
|
return !_initialized;
|
|
}
|
|
|
|
void VRBRAINScheduler::system_initialized() {
|
|
if (_initialized) {
|
|
panic(PSTR("PANIC: scheduler::system_initialized called"
|
|
"more than once"));
|
|
}
|
|
_initialized = true;
|
|
}
|
|
|
|
#endif
|