| /* | |
| * File: start.c | |
| * Purpose: Kinetis start up routines. | |
| * | |
| * Notes: | |
| */ | |
| #include "start.h" | |
| #include "common.h" | |
| #include "wdog.h" | |
| #include "sysinit.h" | |
| /********************************************************************/ | |
| /*! | |
| * \brief Kinetis Start | |
| * \return None | |
| * | |
| * This function calls all of the needed starup routines and then | |
| * branches to the main process. | |
| */ | |
| void start(void) | |
| { | |
| /* Disable the watchdog timer */ | |
| wdog_disable(); | |
| /* Copy any vector or data sections that need to be in RAM */ | |
| common_startup(); | |
| /* Perform processor initialization */ | |
| sysinit(); | |
| /* Determine the flash revision */ | |
| flash_identify(); | |
| /* Jump to main process */ | |
| main(); | |
| /* No actions to perform after this so wait forever */ | |
| while(1); | |
| } | |
| /********************************************************************/ | |
| /*! | |
| * \brief flash Identify | |
| * \return None | |
| * | |
| * This is primarly a reporting function that displays information | |
| * about the specific flash parameters and flash version ID for | |
| * the current device. These parameters are obtained using a special | |
| * flash command call "read resource." The first four bytes returned | |
| * are the flash parameter revision, and the second four bytes are | |
| * the flash version ID. | |
| */ | |
| void flash_identify (void) | |
| { | |
| /* Get the flash parameter version */ | |
| /* Write the flash FCCOB registers with the values for a read resource command */ | |
| FTFL_FCCOB0 = 0x03; | |
| FTFL_FCCOB1 = 0x00; | |
| FTFL_FCCOB2 = 0x00; | |
| FTFL_FCCOB3 = 0x00; | |
| FTFL_FCCOB8 = 0x01; | |
| /* All required FCCOBx registers are written, so launch the command */ | |
| FTFL_FSTAT = FTFL_FSTAT_CCIF_MASK; | |
| /* Wait for the command to complete */ | |
| while(!(FTFL_FSTAT & FTFL_FSTAT_CCIF_MASK)); | |
| /* Get the flash version ID */ | |
| /* Write the flash FCCOB registers with the values for a read resource command */ | |
| FTFL_FCCOB0 = 0x03; | |
| FTFL_FCCOB1 = 0x00; | |
| FTFL_FCCOB2 = 0x00; | |
| FTFL_FCCOB3 = 0x04; | |
| FTFL_FCCOB8 = 0x01; | |
| /* All required FCCOBx registers are written, so launch the command */ | |
| FTFL_FSTAT = FTFL_FSTAT_CCIF_MASK; | |
| /* Wait for the command to complete */ | |
| while(!(FTFL_FSTAT & FTFL_FSTAT_CCIF_MASK)); | |
| } | |
| /********************************************************************/ | |