Software interrupt event register (EXTI_SWIER)
| SWI0 | Software Interrupt on line 0  |  
| SWI1 | Software Interrupt on line 1  |  
| SWI2 | Software Interrupt on line 2  |  
| SWI3 | Software Interrupt on line 3  |  
| SWI4 | Software Interrupt on line 4  |  
| SWI5 | Software Interrupt on line 5  |  
| SWI6 | Software Interrupt on line 6  |  
| SWI7 | Software Interrupt on line 7  |  
| SWI8 | Software Interrupt on line 8  |  
| SWI9 | Software Interrupt on line 9  |  
| SWI10 | Software Interrupt on line 10  |  
| SWI11 | Software Interrupt on line 11  |  
| SWI12 | Software Interrupt on line 12  |  
| SWI13 | Software Interrupt on line 13  |  
| SWI14 | Software Interrupt on line 14  |  
| SWI15 | Software Interrupt on line 15  |  
| SWI16 | Software Interrupt on line 16  |  
| SWI17 | Software Interrupt on line 17  |  
| SWI19 | Software Interrupt on line 19  |  
| SWI20 | Software Interrupt on line 20  |  
| SWI21 | Software Interrupt on line 21  |  
| SWI22 | Software Interrupt on line 22  |