PIC32MX270F256D interrupts

The 64 interrupt sources (IRQs) of the interrupt controller (EVIC). IRQ n has its flag in IFSx and its enable bit in IECx, bit n mod 32 of register n ÷ 32; each source jumps to its vector, and some share one: on this chip several IRQs (a UART's receive, transmit and error) use the same vector, so its handler checks their flags. With multi-vector mode on (INTCONbits.MVEC = 1) each vector has its own handler; in XC32 it is void __ISR(_TIMER_1_VECTOR, IPL4AUTO) Timer1Handler(void), its IPL matching the priority set in IPCx.

IRQ	Vector	Name	Handler	Source
0	0	CORE_TIMER	`__ISR(_CORE_TIMER_VECTOR, IPL4AUTO)`	Core Timer
1	1	CORE_SOFTWARE_0	`__ISR(_CORE_SOFTWARE_0_VECTOR, IPL4AUTO)`	Core Software 0
2	2	CORE_SOFTWARE_1	`__ISR(_CORE_SOFTWARE_1_VECTOR, IPL4AUTO)`	Core Software 1
3	3	EXTERNAL_0	`__ISR(_EXTERNAL_0_VECTOR, IPL4AUTO)`	Ext INT 0
4	4	TIMER_1	`__ISR(_TIMER_1_VECTOR, IPL4AUTO)`	Timer1
5	5	INPUT_CAPTURE_ERROR_1	`__ISR(_INPUT_CAPTURE_1_VECTOR, IPL4AUTO)`	Input Capture 1 Error
6	5	INPUT_CAPTURE_1	`__ISR(_INPUT_CAPTURE_1_VECTOR, IPL4AUTO)`	Input Capture 1
7	6	OUTPUT_COMPARE_1	`__ISR(_OUTPUT_COMPARE_1_VECTOR, IPL4AUTO)`	Output Compare 1
8	7	EXTERNAL_1	`__ISR(_EXTERNAL_1_VECTOR, IPL4AUTO)`	Ext INT 1
9	8	TIMER_2	`__ISR(_TIMER_2_VECTOR, IPL4AUTO)`	Timer2
10	9	INPUT_CAPTURE_ERROR_2	`__ISR(_INPUT_CAPTURE_2_VECTOR, IPL4AUTO)`	Input Capture 2 Error
11	9	INPUT_CAPTURE_2	`__ISR(_INPUT_CAPTURE_2_VECTOR, IPL4AUTO)`	Input Capture 2
12	10	OUTPUT_COMPARE_2	`__ISR(_OUTPUT_COMPARE_2_VECTOR, IPL4AUTO)`	Output Compare 2
13	11	EXTERNAL_2	`__ISR(_EXTERNAL_2_VECTOR, IPL4AUTO)`	Ext INT 2
14	12	TIMER_3	`__ISR(_TIMER_3_VECTOR, IPL4AUTO)`	Timer3
15	13	INPUT_CAPTURE_ERROR_3	`__ISR(_INPUT_CAPTURE_3_VECTOR, IPL4AUTO)`	Input Capture 3 Error
16	13	INPUT_CAPTURE_3	`__ISR(_INPUT_CAPTURE_3_VECTOR, IPL4AUTO)`	Input Capture 3
17	14	OUTPUT_COMPARE_3	`__ISR(_OUTPUT_COMPARE_3_VECTOR, IPL4AUTO)`	Output Compare 3
18	15	EXTERNAL_3	`__ISR(_EXTERNAL_3_VECTOR, IPL4AUTO)`	Ext INT 3
19	16	TIMER_4	`__ISR(_TIMER_4_VECTOR, IPL4AUTO)`	Timer4
20	17	INPUT_CAPTURE_ERROR_4	`__ISR(_INPUT_CAPTURE_4_VECTOR, IPL4AUTO)`	Input Capture 4 Error
21	17	INPUT_CAPTURE_4	`__ISR(_INPUT_CAPTURE_4_VECTOR, IPL4AUTO)`	Input Capture 4
22	18	OUTPUT_COMPARE_4	`__ISR(_OUTPUT_COMPARE_4_VECTOR, IPL4AUTO)`	Output Compare 4
23	19	EXTERNAL_4	`__ISR(_EXTERNAL_4_VECTOR, IPL4AUTO)`	Ext INT 4
24	20	TIMER_5	`__ISR(_TIMER_5_VECTOR, IPL4AUTO)`	Timer5
25	21	INPUT_CAPTURE_ERROR_5	`__ISR(_INPUT_CAPTURE_5_VECTOR, IPL4AUTO)`	Input Capture 5 Error
26	21	INPUT_CAPTURE_5	`__ISR(_INPUT_CAPTURE_5_VECTOR, IPL4AUTO)`	Input Capture 5
27	22	OUTPUT_COMPARE_5	`__ISR(_OUTPUT_COMPARE_5_VECTOR, IPL4AUTO)`	Output Compare 5
28	23	ADC	`__ISR(_ADC_VECTOR, IPL4AUTO)`	ADC1 Convert Done
29	24	FAIL_SAFE_MONITOR	`__ISR(_FAIL_SAFE_MONITOR_VECTOR, IPL4AUTO)`	Fail Safe Clock Monitor
30	25	RTCC	`__ISR(_RTCC_VECTOR, IPL4AUTO)`	Real Time Clock Calendar
31	26	FLASH_CONTROL	`__ISR(_FCE_VECTOR, IPL4AUTO)`	Flash Control Event
32	27	COMPARATOR_1	`__ISR(_COMPARATOR_1_VECTOR, IPL4AUTO)`	Comparator 1
33	28	COMPARATOR_2	`__ISR(_COMPARATOR_2_VECTOR, IPL4AUTO)`	Comparator 2
34	29	COMPARATOR_3	`__ISR(_COMPARATOR_3_VECTOR, IPL4AUTO)`	Comparator 3
35	30	USB	`__ISR(_USB_1_VECTOR, IPL4AUTO)`	USB Module 1
36	31	SPI1_ERR	`__ISR(_SPI_1_VECTOR, IPL4AUTO)`	SPI1 Fault
37	31	SPI1_RX	`__ISR(_SPI_1_VECTOR, IPL4AUTO)`	SPI1 RX
38	31	SPI1_TX	`__ISR(_SPI_1_VECTOR, IPL4AUTO)`	SPI1 TX
39	32	UART1_ERR	`__ISR(_UART_1_VECTOR, IPL4AUTO)`	UART1 Error
40	32	UART1_RX	`__ISR(_UART_1_VECTOR, IPL4AUTO)`	UART1 RX
41	32	UART1_TX	`__ISR(_UART_1_VECTOR, IPL4AUTO)`	UART1 TX
42	33	I2C1_BUS	`__ISR(_I2C_1_VECTOR, IPL4AUTO)`	I2C1 Bus Collision Event
43	33	I2C1_SLAVE	`__ISR(_I2C_1_VECTOR, IPL4AUTO)`	I2C1 Slave Event
44	33	I2C1_MASTER	`__ISR(_I2C_1_VECTOR, IPL4AUTO)`	I2C1 Master Event
45	34	CHANGE_NOTICE_A	`__ISR(_CHANGE_NOTICE_VECTOR, IPL4AUTO)`	PORTA Input Change Interrupt
46	34	CHANGE_NOTICE_B	`__ISR(_CHANGE_NOTICE_VECTOR, IPL4AUTO)`	PORTB Input Change Interrupt
47	34	CHANGE_NOTICE_C	`__ISR(_CHANGE_NOTICE_VECTOR, IPL4AUTO)`	PORTC Input Change Interrupt
48	35	PMP	`__ISR(_PMP_VECTOR, IPL4AUTO)`	Parallel Master Port
49	35	PMP_ERROR	`__ISR(_PMP_VECTOR, IPL4AUTO)`	PMP Error
50	36	SPI2_ERR	`__ISR(_SPI_2_VECTOR, IPL4AUTO)`	SPI2 Fault
51	36	SPI2_RX	`__ISR(_SPI_2_VECTOR, IPL4AUTO)`	SPI2 RX
52	36	SPI2_TX	`__ISR(_SPI_2_VECTOR, IPL4AUTO)`	SPI2 TX
53	37	UART2_ERR	`__ISR(_UART_2_VECTOR, IPL4AUTO)`	UART2 Error
54	37	UART2_RX	`__ISR(_UART_2_VECTOR, IPL4AUTO)`	UART2 RX
55	37	UART2_TX	`__ISR(_UART_2_VECTOR, IPL4AUTO)`	UART2 TX
56	38	I2C2_BUS	`__ISR(_I2C_2_VECTOR, IPL4AUTO)`	I2C2 Bus Collision Event
57	38	I2C2_SLAVE	`__ISR(_I2C_2_VECTOR, IPL4AUTO)`	I2C2 Slave Event
58	38	I2C2_MASTER	`__ISR(_I2C_2_VECTOR, IPL4AUTO)`	I2C2 Master Event
59	39	CTMU	`__ISR(_CTMU_VECTOR, IPL4AUTO)`	CTMU Event
60	40	DMA0	`__ISR(_DMA_0_VECTOR, IPL4AUTO)`	DMA Channel 0
61	41	DMA1	`__ISR(_DMA_1_VECTOR, IPL4AUTO)`	DMA Channel 1
62	42	DMA2	`__ISR(_DMA_2_VECTOR, IPL4AUTO)`	DMA Channel 2
63	43	DMA3	`__ISR(_DMA_3_VECTOR, IPL4AUTO)`	DMA Channel 3