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LibrePilot/flight/CopterControl/System/coptercontrol.c

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/**
******************************************************************************
* @addtogroup OpenPilotSystem OpenPilot System
* @brief These files are the core system files of OpenPilot.
* They are the ground layer just above PiOS. In practice, OpenPilot actually starts
* in the main() function of openpilot.c
* @{
* @addtogroup OpenPilotCore OpenPilot Core
* @brief This is where the OP firmware starts. Those files also define the compile-time
* options of the firmware.
* @{
* @file openpilot.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief Sets up and runs main OpenPilot tasks.
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* OpenPilot Includes */
#include "openpilot.h"
#include "uavobjectsinit.h"
#include "systemmod.h"
/* Task Priorities */
#define PRIORITY_TASK_HOOKS (tskIDLE_PRIORITY + 3)
/* Global Variables */
/* Prototype of PIOS_Board_Init() function */
extern void PIOS_Board_Init(void);
extern void Stack_Change(void);
/**
* OpenPilot Main function:
*
* Initialize PiOS<BR>
* Create the "System" task (SystemModInitializein Modules/System/systemmod.c) <BR>
OP-423 do the arch specific stuff (in reset vector) to hide this from portable code: - switch back to MSP stack before starting the scheduler so that the sheduler can use the IRQ stack (when/if needed). - call the C portable function in heap1 to claim some stack back (the number to claim is taken from linker file). - start the scheduler from reset vector (I move this here from main because it make sense to not go back to C (so that I don't need to copy the rolled stack in case the sheduler returns). This make it more clean. - Also I have added the call to the mem manager if sheduler return. that way, we don't reset indefinitely if memory runs out. We will go to this handler and figure things out (right now, it's just looping but at least not rebooting. Probably trap NMI would be better (later improvement). The part missing for this part is the weak attribute for the function in heap1.c so that we don't have to update everything with empty stub. I think the weak atrribute for C function called in assembly is arch dependent so I am not sure if this is possible (will look into it, maybe somebody outthere nows). Right now, it's heap1 dependent and won't work with heap2. I will clean that up the next couple of days. I did some test and it looks good. this is without init code re-organization so we don't free as much as we will be it's good starts. This compile with sim_posix (since it does not affect portable code) so this is really clean. I only tested this with CC. I will port it for OP when I will work on heap2.
2011-06-14 06:49:17 +02:00
* Start FreeRTOS Scheduler (vTaskStartScheduler) (Now handled by caller)
* If something goes wrong, blink LED1 and LED2 every 100ms
*
*/
int main()
{
/* NOTE: Do NOT modify the following start-up sequence */
/* Any new initialization functions should be added in OpenPilotInit() */
/* Brings up System using CMSIS functions, enables the LEDs. */
PIOS_SYS_Init();
/* Architecture dependant Hardware and
* core subsystem initialisation
* (see pios_board.c for your arch)
* */
PIOS_Board_Init();
/* Initialize modules */
MODULE_INITIALISE_ALL
/* swap the stack to use the IRQ stack */
Stack_Change();
/* Start the FreeRTOS scheduler which should never returns.*/
vTaskStartScheduler();
/* If all is well we will never reach here as the scheduler will now be running. */
/* Do some indication to user that something bad just happened */
PIOS_LED_Off(LED1); \
for(;;) { \
PIOS_LED_Toggle(LED1); \
PIOS_DELAY_WaitmS(100); \
};
return 0;
}
/**
* @}
* @}
*/