/** ****************************************************************************** * * @file firmwareiap.c * @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010. * @brief In Application Programming module to support firmware upgrades by * providing a means to enter the bootloader. * * @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 */ #include #include "pios.h" #include #include "openpilot.h" #include "firmwareiap.h" #include "firmwareiapobj.h" #include "flightstatus.h" // Private constants #define IAP_CMD_STEP_1 1122 #define IAP_CMD_STEP_2 2233 #define IAP_CMD_STEP_3 3344 #define IAP_CMD_CRC 100 #define IAP_CMD_VERIFY 101 #define IAP_CMD_VERSION 102 #define IAP_STATE_READY 0 #define IAP_STATE_STEP_1 1 #define IAP_STATE_STEP_2 2 #define IAP_STATE_RESETTING 3 #define RESET_DELAY 500 /* delay between sending reset ot INS */ #define TICKS2MS(t) ((t)/portTICK_RATE_MS) #define MS2TICKS(m) ((m)*portTICK_RATE_MS) const uint32_t iap_time_2_low_end = 500; const uint32_t iap_time_2_high_end = 5000; const uint32_t iap_time_3_low_end = 500; const uint32_t iap_time_3_high_end = 5000; // Private types // Private variables static uint8_t reset_count = 0; static portTickType lastResetSysTime; // Private functions static void FirmwareIAPCallback(UAVObjEvent* ev); FirmwareIAPObjData data; static uint32_t get_time(void); // Private types // Private functions static void resetTask(UAVObjEvent *); /** * Initialise the module, called on startup. * \returns 0 on success or -1 if initialisation failed */ /*! * \brief Performs object initialization functions. * \param None. * \return 0 - under all cases * * \note * */ int32_t FirmwareIAPInitialize() { const struct pios_board_info * bdinfo = &pios_board_info_blob; data.BoardType= bdinfo->board_type; PIOS_BL_HELPER_FLASH_Read_Description(data.Description,FIRMWAREIAPOBJ_DESCRIPTION_NUMELEM); PIOS_SYS_SerialNumberGetBinary(data.CPUSerial); data.BoardRevision= bdinfo->board_rev; data.ArmReset=0; data.crc = 0; FirmwareIAPObjSet( &data ); FirmwareIAPObjConnectCallback( &FirmwareIAPCallback ); return 0; } /*! * \brief FirmwareIAPCallback - callback function for firmware IAP requests * \param[in] ev - pointer objevent * \retval None. * * \note * */ static uint8_t iap_state = IAP_STATE_READY; static void FirmwareIAPCallback(UAVObjEvent* ev) { const struct pios_board_info * bdinfo = &pios_board_info_blob; static uint32_t last_time = 0; uint32_t this_time; uint32_t delta; if(iap_state == IAP_STATE_RESETTING) return; if ( ev->obj == FirmwareIAPObjHandle() ) { // Get the input object data FirmwareIAPObjGet(&data); this_time = get_time(); delta = this_time - last_time; last_time = this_time; if((data.BoardType==bdinfo->board_type)&&(data.crc != PIOS_BL_HELPER_CRC_Memory_Calc())) { PIOS_BL_HELPER_FLASH_Read_Description(data.Description,FIRMWAREIAPOBJ_DESCRIPTION_NUMELEM); PIOS_SYS_SerialNumberGetBinary(data.CPUSerial); data.BoardRevision=bdinfo->board_rev; data.crc = PIOS_BL_HELPER_CRC_Memory_Calc(); FirmwareIAPObjSet( &data ); } if((data.ArmReset==1)&&(iap_state!=IAP_STATE_RESETTING)) { data.ArmReset=0; FirmwareIAPObjSet( &data ); } switch(iap_state) { case IAP_STATE_READY: if( data.Command == IAP_CMD_STEP_1 ) { iap_state = IAP_STATE_STEP_1; } break; case IAP_STATE_STEP_1: if( data.Command == IAP_CMD_STEP_2 ) { if( delta > iap_time_2_low_end && delta < iap_time_2_high_end ) { iap_state = IAP_STATE_STEP_2; } else { iap_state = IAP_STATE_READY; } } else { iap_state = IAP_STATE_READY; } break; case IAP_STATE_STEP_2: if( data.Command == IAP_CMD_STEP_3 ) { if( delta > iap_time_3_low_end && delta < iap_time_3_high_end ) { FlightStatusData flightStatus; FlightStatusGet(&flightStatus); if(flightStatus.Armed != FLIGHTSTATUS_ARMED_DISARMED) { // Abort any attempts if not disarmed iap_state = IAP_STATE_READY; break; } // we've met the three sequence of command numbers // we've met the time requirements. PIOS_IAP_SetRequest1(); PIOS_IAP_SetRequest2(); /* Note: Cant just wait timeout value, because first time is randomized */ reset_count = 0; lastResetSysTime = xTaskGetTickCount(); UAVObjEvent * ev = pvPortMalloc(sizeof(UAVObjEvent)); memset(ev,0,sizeof(UAVObjEvent)); EventPeriodicCallbackCreate(ev, resetTask, 100); iap_state = IAP_STATE_RESETTING; } else { iap_state = IAP_STATE_READY; } } else { iap_state = IAP_STATE_READY; } break; case IAP_STATE_RESETTING: // stay here permanentally, should reboot break; default: iap_state = IAP_STATE_READY; last_time = 0; // Reset the time counter, as we are not doing a IAP reset break; } } } // Returns number of milliseconds from the start of the kernel. /*! * \brief Returns number of milliseconds from the start of the kernel * \param None. * \return number of milliseconds from the start of the kernel. * * \note * */ static uint32_t get_time(void) { portTickType ticks; ticks = xTaskGetTickCount(); return TICKS2MS(ticks); } /** * Executed by event dispatcher callback to reset INS before resetting OP */ static void resetTask(UAVObjEvent * ev) { PIOS_LED_Toggle(LED1); #if (PIOS_LED_NUM > 1) PIOS_LED_Toggle(LED2); #endif if((portTickType) (xTaskGetTickCount() - lastResetSysTime) > RESET_DELAY / portTICK_RATE_MS) { lastResetSysTime = xTaskGetTickCount(); data.BoardType=0xFF; data.ArmReset=1; data.crc=reset_count; /* Must change a value for this to get to INS */ FirmwareIAPObjSet(&data); ++reset_count; if(reset_count>3) { PIOS_SYS_Reset(); } } }