len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-09-01 20:03:50 -04:00
Code Issues Projects Releases Packages Wiki Activity

Update Cortex-M3 and Cortex-M4F ports to allow the SysTick to be clocked at a different speed than the system clock (as is done in the recent STM32L demo. ).

Browse source 
Add additional asserts and isb instructions into the Cortex-M3 and Cortex-M4F ports.
This commit is contained in:
Richard Barry 2013-12-12 14:07:20 +00:00
parent 6b3393b4b6
commit 0d1e12522b
10 changed files with 110 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

7
FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s
View file

@ -83,7 +83,7 @@
xPortPendSVHandler:
mrs r0, psp
isb
/* Get the location of the current TCB. */
ldr r3, =pxCurrentTCB
ldr r2, [r3]
@ -121,7 +121,7 @@ xPortPendSVHandler:
vldmiaeq r0!, {s16-s31}
msr psp, r0
isb
#ifdef WORKAROUND_PMU_CM001 /* XMC4000 specific errata */
#if WORKAROUND_PMU_CM001 == 1
push { r14 }
@ -156,6 +156,7 @@ vPortSVCHandler:
/* Pop the core registers. */
ldmia r0!, {r4-r11, r14}
msr psp, r0
isb
mov r0, #0
msr basepri, r0
bx r14
@ -171,6 +172,8 @@ vPortStartFirstTask
msr msp, r0
/* Call SVC to start the first task. */
cpsie i
dsb
isb
svc 0
/*-----------------------------------------------------------*/