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Update to allow low power mode to be used with the RTOS.

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Richard Barry 2008-10-19 18:52:04 +00:00
parent 549dcfa148
commit de519dd34e
1 changed files with 4 additions and 0 deletions
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4
Source/portable/GCC/MSP430F449/port.c
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@ -123,6 +123,9 @@ volatile unsigned portSHORT usCriticalNesting = portINITIAL_CRITICAL_NESTING;
* loaded from the task control block. Next the value for usCriticalNesting * loaded from the task control block. Next the value for usCriticalNesting
* used by the task is retrieved from the stack - followed by the value of all * used by the task is retrieved from the stack - followed by the value of all
* the general purpose msp430 registers. * the general purpose msp430 registers.
*
* The bic instruction ensures there are no low power bits set in the status
* register that is about to be popped from the stack.
*/ */
#define portRESTORE_CONTEXT() \ #define portRESTORE_CONTEXT() \
asm volatile ( "mov.w pxCurrentTCB, r12 \n\t" \ asm volatile ( "mov.w pxCurrentTCB, r12 \n\t" \
@ -141,6 +144,7 @@ volatile unsigned portSHORT usCriticalNesting = portINITIAL_CRITICAL_NESTING;
"pop r6 \n\t" \ "pop r6 \n\t" \
"pop r5 \n\t" \ "pop r5 \n\t" \
"pop r4 \n\t" \ "pop r4 \n\t" \
"bic #(0xf0),0(r1) \n\t" \
"reti \n\t" \ "reti \n\t" \
); );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/