CCS/TMS320F28069: The default ADCINT1_ISR is triggered by no reason

Dan,

You can monitor the PIE Interrupt Flags to see which interrupt sources are active. You can also inspect the PIE Vector Table to see if ADCINT1_ISR may have been mapped to another interrupt source.

-Tommy

Hi Tommy,

I checked the flags PieCtrlRegs.PIEIFR1.bit.INTx1 = 0 and PieCtrlRegs.PIEIFR10.bit.INTx1 = 0. I also check the PIE Vector Table. ADCINT1_ISR is only mapped to PieVectTable.ADCINT1.

PIE1_RESERVED void (*)() 0x000355AA 0x00000D00@Data

PIE2_RESERVED void (*)() 0x00000000 0x00000D02@Data

PIE3_RESERVED void (*)() 0x00000000 0x00000D04@Data

PIE4_RESERVED void (*)() 0x003EFB2F 0x00000D06@Data

PIE5_RESERVED void (*)() 0x003EFB2F 0x00000D08@Data

PIE6_RESERVED void (*)() 0x003EFB2F 0x00000D0A@Data

PIE7_RESERVED void (*)() 0x003EFB2F 0x00000D0C@Data

PIE8_RESERVED void (*)() 0x003EFB2F 0x00000D0E@Data

PIE9_RESERVED void (*)() 0x003EFB2F 0x00000D10@Data

PIE10_RESERVED void (*)() 0x003EFB2F 0x00000D12@Data

PIE11_RESERVED void (*)() 0x003EFB2F 0x00000D14@Data

PIE12_RESERVED void (*)() 0x003EFB2F 0x00000D16@Data

PIE13_RESERVED void (*)() 0x003EFB2F 0x00000D18@Data

TINT1 void (*)() 0x003F1DE8 0x00000D1A@Data

TINT2 void (*)() 0x003F1DFA 0x00000D1C@Data

DATALOG void (*)() 0x003EF7BC 0x00000D1E@Data

RTOSINT void (*)() 0x003EF7C6 0x00000D20@Data

EMUINT void (*)() 0x003EF7D0 0x00000D22@Data

NMI void (*)() 0x003EF7DA 0x00000D24@Data

ILLEGAL void (*)() 0x003EF7E4 0x00000D26@Data

USER1 void (*)() 0x003EF7EE 0x00000D28@Data

USER2 void (*)() 0x003EF7F8 0x00000D2A@Data

USER3 void (*)() 0x003EF802 0x00000D2C@Data

USER4 void (*)() 0x003EF80C 0x00000D2E@Data

USER5 void (*)() 0x003EF816 0x00000D30@Data

USER6 void (*)() 0x003EF820 0x00000D32@Data

USER7 void (*)() 0x003EF82A 0x00000D34@Data

USER8 void (*)() 0x003EF834 0x00000D36@Data

USER9 void (*)() 0x003EF83E 0x00000D38@Data

USER10 void (*)() 0x003EF848 0x00000D3A@Data

USER11 void (*)() 0x003EF852 0x00000D3C@Data

USER12 void (*)() 0x003EF85C 0x00000D3E@Data

ADCINT1 void (*)() 0x003EF866 0x00000D40@Data   And 0x003EF866 is address for ADCINT1_ISR

ADCINT2 void (*)() 0x003EF870 0x00000D42@Data

rsvd1_3 void (*)() 0x003EFB39 0x00000D44@Data

XINT1 void (*)() 0x003F18B3 0x00000D46@Data

XINT2 void (*)() 0x003F0B6E 0x00000D48@Data

ADCINT9 void (*)() 0x003EF88E 0x00000D4A@Data

TINT0 void (*)() 0x003F1D93 0x00000D4C@Data

WAKEINT void (*)() 0x003EF8A2 0x00000D4E@Data

EPWM1_TZINT void (*)() 0x003EF8AC 0x00000D50@Data

EPWM2_TZINT void (*)() 0x003EF8B6 0x00000D52@Data

EPWM3_TZINT void (*)() 0x003EF8C0 0x00000D54@Data

EPWM4_TZINT void (*)() 0x003EF8CA 0x00000D56@Data

EPWM5_TZINT void (*)() 0x003EF8D4 0x00000D58@Data

EPWM6_TZINT void (*)() 0x003EF8DE 0x00000D5A@Data

EPWM7_TZINT void (*)() 0x003EF8E8 0x00000D5C@Data

EPWM8_TZINT void (*)() 0x003EF8F2 0x00000D5E@Data

EPWM1_INT void (*)() 0x003EF8FC 0x00000D60@Data

EPWM2_INT void (*)() 0x003EF906 0x00000D62@Data

EPWM3_INT void (*)() 0x003EF910 0x00000D64@Data

EPWM4_INT void (*)() 0x003EF91A 0x00000D66@Data

EPWM5_INT void (*)() 0x003EF924 0x00000D68@Data

EPWM6_INT void (*)() 0x003EF92E 0x00000D6A@Data

EPWM7_INT void (*)() 0x003EF938 0x00000D6C@Data

EPWM8_INT void (*)() 0x003EF942 0x00000D6E@Data

ECAP1_INT void (*)() 0x003EF94C 0x00000D70@Data

ECAP2_INT void (*)() 0x003EF956 0x00000D72@Data

ECAP3_INT void (*)() 0x003EF960 0x00000D74@Data

rsvd4_4 void (*)() 0x003EFB39 0x00000D76@Data

rsvd4_5 void (*)() 0x003EFB39 0x00000D78@Data

rsvd4_6 void (*)() 0x003EFB39 0x00000D7A@Data

HRCAP1_INT void (*)() 0x003EF96A 0x00000D7C@Data

HRCAP2_INT void (*)() 0x003EF974 0x00000D7E@Data

EQEP1_INT void (*)() 0x003EF97E 0x00000D80@Data

EQEP2_INT void (*)() 0x003EF988 0x00000D82@Data

rsvd5_3 void (*)() 0x003EFB39 0x00000D84@Data

HRCAP3_INT void (*)() 0x003EF992 0x00000D86@Data

HRCAP4_INT void (*)() 0x003EF99C 0x00000D88@Data

rsvd5_6 void (*)() 0x003EFB39 0x00000D8A@Data

rsvd5_7 void (*)() 0x003EFB39 0x00000D8C@Data

USB0_INT void (*)() 0x003EF9A6 0x00000D8E@Data

SPIRXINTA void (*)() 0x003F2C17 0x00000D90@Data

SPITXINTA void (*)() 0x003F2C02 0x00000D92@Data

SPIRXINTB void (*)() 0x003EF9C4 0x00000D94@Data

SPITXINTB void (*)() 0x003EF9BA 0x00000D96@Data

MRINTA void (*)() 0x003EF9D8 0x00000D98@Data

MXINTA void (*)() 0x003EF9E2 0x00000D9A@Data

rsvd6_7 void (*)() 0x003EFB39 0x00000D9C@Data

rsvd6_8 void (*)() 0x003EFB39 0x00000D9E@Data

DINTCH1 void (*)() 0x003EF9EC 0x00000DA0@Data

DINTCH2 void (*)() 0x003EF9F6 0x00000DA2@Data

DINTCH3 void (*)() 0x003EFA00 0x00000DA4@Data

DINTCH4 void (*)() 0x003EFA0A 0x00000DA6@Data

DINTCH5 void (*)() 0x003EFA14 0x00000DA8@Data

DINTCH6 void (*)() 0x003EFA1E 0x00000DAA@Data

rsvd7_7 void (*)() 0x003EFB39 0x00000DAC@Data

rsvd7_8 void (*)() 0x003EFB39 0x00000DAE@Data

I2CINT1A void (*)() 0x003F29B3 0x00000DB0@Data

I2CINT2A void (*)() 0x003EFA32 0x00000DB2@Data

rsvd8_3 void (*)() 0x003EFB39 0x00000DB4@Data

rsvd8_4 void (*)() 0x003EFB39 0x00000DB6@Data

rsvd8_5 void (*)() 0x003EFB39 0x00000DB8@Data

rsvd8_6 void (*)() 0x003EFB39 0x00000DBA@Data

rsvd8_7 void (*)() 0x003EFB39 0x00000DBC@Data

rsvd8_8 void (*)() 0x003EFB39 0x00000DBE@Data

SCIRXINTA void (*)() 0x003F296A 0x00000DC0@Data

SCITXINTA void (*)() 0x003F2955 0x00000DC2@Data

SCIRXINTB void (*)() 0x003EFA50 0x00000DC4@Data

SCITXINTB void (*)() 0x003EFA5A 0x00000DC6@Data

ECAN0INTA void (*)() 0x003EFA64 0x00000DC8@Data

ECAN1INTA void (*)() 0x003EFA6E 0x00000DCA@Data

rsvd9_7 void (*)() 0x003EFB39 0x00000DCC@Data

rsvd9_8 void (*)() 0x003EFB39 0x00000DCE@Data

rsvd10_1 void (*)() 0x003EFB39 0x00000DD0@Data

rsvd10_2 void (*)() 0x003EFB39 0x00000DD2@Data

ADCINT3 void (*)() 0x003EFA78 0x00000DD4@Data

ADCINT4 void (*)() 0x003EFA82 0x00000DD6@Data

ADCINT5 void (*)() 0x003EFA8C 0x00000DD8@Data

ADCINT6 void (*)() 0x003EFA96 0x00000DDA@Data

ADCINT7 void (*)() 0x003EFAA0 0x00000DDC@Data

ADCINT8 void (*)() 0x003EFAAA 0x00000DDE@Data

CLA1_INT1 void (*)() 0x003F25E0 0x00000DE0@Data

CLA1_INT2 void (*)() 0x003F25F1 0x00000DE2@Data

CLA1_INT3 void (*)() 0x003F2602 0x00000DE4@Data

CLA1_INT4 void (*)() 0x003F2613 0x00000DE6@Data

CLA1_INT5 void (*)() 0x003F2624 0x00000DE8@Data

CLA1_INT6 void (*)() 0x003F2635 0x00000DEA@Data

CLA1_INT7 void (*)() 0x003F2646 0x00000DEC@Data

CLA1_INT8 void (*)() 0x003F2657 0x00000DEE@Data

XINT3 void (*)() 0x003EFB04 0x00000DF0@Data

rsvd12_2 void (*)() 0x003EFB39 0x00000DF2@Data

rsvd12_3 void (*)() 0x003EFB39 0x00000DF4@Data

rsvd12_4 void (*)() 0x003EFB39 0x00000DF6@Data

rsvd12_5 void (*)() 0x003EFB39 0x00000DF8@Data

rsvd12_6 void (*)() 0x003EFB39 0x00000DFA@Data

LVF void (*)() 0x003EFB0E 0x00000DFC@Data

LUF void (*)() 0x003EFB18 0x00000DFE@Data

Dan,

I just want to double check, when disabling ADCINT1 in PIE group 1 you used EALLOW and EDIS for protected register access:

asm(" EALLOW");
PieCtrlRegs.PIEIER1.bit.INTx1 = 0;
asm(" EDIS");

- Ken

Hi Ken,

Yes, when I changed the values of control register, I used EALLOW and EDIS.

Dan,

Just wondering if you are using nested interrupts? In any case, please see the F2806x Silicon Errata at:

www.ti.com/lit/sprz342

See section 4.1 on page 3. You will also find a workaround on that page.

I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

- Ken