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set Systick interrupt priority to the lowest

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aozima
2020-05-30 15:23:25 +08:00
parent 1ef77bd969
commit c3d63e49de
18 changed files with 36 additions and 36 deletions
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4
libcpu/arm/cortex-m3/context_rvds.S
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@@ -18,7 +18,7 @@
SCB_VTOR EQU 0xE000ED08 ; Vector Table Offset Register
NVIC_INT_CTRL EQU 0xE000ED04 ; interrupt control state register
NVIC_SYSPRI2 EQU 0xE000ED20 ; system priority register (2)
NVIC_PENDSV_PRI EQU 0x00FF0000 ; PendSV priority value (lowest)
NVIC_PENDSV_PRI EQU 0xFFFF0000 ; PendSV and SysTick priority value (lowest)
NVIC_PENDSVSET EQU 0x10000000 ; value to trigger PendSV exception
AREA |.text|, CODE, READONLY, ALIGN=2
@@ -145,7 +145,7 @@ rt_hw_context_switch_to PROC
MOV r0, #1
STR r0, [r1]
; set the PendSV exception priority
; set the PendSV and SysTick exception priority
LDR r0, =NVIC_SYSPRI2
LDR r1, =NVIC_PENDSV_PRI
LDR.W r2, [r0,#0x00] ; read