57 lines
No EOL
1.7 KiB
Text
57 lines
No EOL
1.7 KiB
Text
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/* Code borrowed from http://forum.arduino.cc/index.php?topic=289190.0
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Awesome work Mark T!*/
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__attribute__ ((section (".ramfunc")))
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void _EEFC_ReadUniqueID( unsigned int * pdwUniqueID )
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{
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unsigned int status ;
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/* Send the Start Read unique Identifier command (STUI) by writing the Flash Command Register with the STUI command.*/
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EFC1->EEFC_FCR = (0x5A << 24) | EFC_FCMD_STUI;
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do
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{
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status = EFC1->EEFC_FSR ;
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} while ( (status & EEFC_FSR_FRDY) == EEFC_FSR_FRDY ) ;
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/* The Unique Identifier is located in the first 128 bits of the Flash memory mapping. So, at the address 0x400000-0x400003. */
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pdwUniqueID[0] = *(uint32_t *)IFLASH1_ADDR;
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pdwUniqueID[1] = *(uint32_t *)(IFLASH1_ADDR + 4);
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pdwUniqueID[2] = *(uint32_t *)(IFLASH1_ADDR + 8);
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pdwUniqueID[3] = *(uint32_t *)(IFLASH1_ADDR + 12);
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/* To stop the Unique Identifier mode, the user needs to send the Stop Read unique Identifier
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command (SPUI) by writing the Flash Command Register with the SPUI command. */
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EFC1->EEFC_FCR = (0x5A << 24) | EFC_FCMD_SPUI ;
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/* When the Stop read Unique Unique Identifier command (SPUI) has been performed, the
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FRDY bit in the Flash Programming Status Register (EEFC_FSR) rises. */
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do
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{
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status = EFC1->EEFC_FSR ;
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} while ( (status & EEFC_FSR_FRDY) != EEFC_FSR_FRDY ) ;
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}
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void setup ()
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{
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Serial.begin (9600) ;
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unsigned int adwUniqueID[5] ;
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WDT_Disable( WDT ) ;
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Serial.println("Reading 128 bits unique identifier \n\r" ) ;
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_EEFC_ReadUniqueID( adwUniqueID ) ;
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Serial.print ("ID: ") ;
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for (byte b = 0 ; b < 4 ; b++)
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Serial.print ((unsigned int) adwUniqueID [b], HEX) ;
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Serial.println () ;
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}
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void loop() {
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// put your main code here, to run repeatedly:
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} |