Cpu Interrupt; Allocate Peripheral Interrupt Sources To Peripheral Interrupt On Cpu; Cpu Interrupts - Espressif Systems ESP32 Technical Reference Manual

2.3 Functional Description

2.3.2 CPU Interrupt

Both of the two CPUs (PRO and APP) have 32 interrupts each, of which 26 are peripheral interrupts. All
interrupts in a CPU are listed in Table 7.
No. Category
0 Peripheral
1 Peripheral
2 Peripheral
3 Peripheral
4 Peripheral
5 Peripheral
6 Internal
7 Internal
8 Peripheral
9 Peripheral
10 Peripheral
11 Internal
12 Peripheral
13 Peripheral
14 Peripheral
15 Internal
16 Internal
17 Peripheral
18 Peripheral
19 Peripheral
20 Peripheral
21 Peripheral
22 Peripheral
23 Peripheral
24 Peripheral
25 Peripheral
26 Peripheral
27 Peripheral
28 Peripheral
29 Internal
30 Peripheral
31 Peripheral

2.3.3 Allocate Peripheral Interrupt Sources to Peripheral Interrupt on CPU

In this section:
• Source_X stands for any particular peripheral interrupt source.
• PRO_X_MAP_REG (or APP_X_MAP_REG) stands for any particular peripheral interrupt configuration
Espressif Systems
Table 7: CPU Interrupts
Type
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Timer.0
Software
Level-Triggered
Level-Triggered
Edge-Triggered
Profiling
Level-Triggered
Level-Triggered
NMI
Timer.1
Timer.2
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Edge-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Level-Triggered
Edge-Triggered
Software
Edge-Triggered
Level-Triggered
20
2 INTERRUPT MATRIX
Priority Level
1
1
1
1
1
1
1
1
1
1
1
3
1
1
NMI
3
5
1
1
2
2
2
3
3
4
4
5
3
4
3
4
5
ESP32 Technical Reference Manual V1.0