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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AN2288 Fiches technique(PDF) 22 Page - STMicroelectronics |
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AN2288 Fiches technique(HTML) 22 Page - STMicroelectronics |
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22 / 29 page  Software routines AN2288 22/29 5.4 SPI interrupt routine This routine is called just after power up of the application. This routine is used to initialize the EEPROM if the meter is used for the first time or to get the previous accumulated kWh and tampering information. The one pulse comparison factors and display constants are also received from EEPROM. Figure 19. SPI interrupt routine SPI_IT_Routine_INIT Is temp!=init_EEPROM [0]? no Disable SPI interrupt Clears SPI interrupt flag Read first byte from EEPROM from address 0x00 temp = Read byte from EEPROM yes Write new values of different calibra- tion factors and display factors Read stored calibration fac- tors and display factors Set the Lite timer timebase2 for 200us interrupt and enable interrupt, ADC on end |
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