diff options
Diffstat (limited to 'ports/cortex_m3/gnu')
| -rwxr-xr-x[-rw-r--r--] | ports/cortex_m3/gnu/CMakeLists.txt | 0 | ||||
| -rw-r--r-- | ports/cortex_m3/gnu/src/tx_thread_schedule.S | 29 |
2 files changed, 25 insertions, 4 deletions
diff --git a/ports/cortex_m3/gnu/CMakeLists.txt b/ports/cortex_m3/gnu/CMakeLists.txt index 71e2d4f2..71e2d4f2 100644..100755 --- a/ports/cortex_m3/gnu/CMakeLists.txt +++ b/ports/cortex_m3/gnu/CMakeLists.txt diff --git a/ports/cortex_m3/gnu/src/tx_thread_schedule.S b/ports/cortex_m3/gnu/src/tx_thread_schedule.S index b2689609..b9227c28 100644 --- a/ports/cortex_m3/gnu/src/tx_thread_schedule.S +++ b/ports/cortex_m3/gnu/src/tx_thread_schedule.S @@ -27,6 +27,10 @@ .global _tx_thread_system_stack_ptr .global _tx_execution_thread_enter .global _tx_execution_thread_exit +#ifdef TX_LOW_POWER + .global tx_low_power_enter + .global tx_low_power_exit +#endif @ @ .text @@ -37,7 +41,7 @@ @/* FUNCTION RELEASE */ @/* */ @/* _tx_thread_schedule Cortex-M3/GNU */ -@/* 6.1 */ +@/* 6.1.5 */ @/* AUTHOR */ @/* */ @/* William E. Lamie, Microsoft Corporation */ @@ -70,9 +74,12 @@ @/* */ @/* DATE NAME DESCRIPTION */ @/* */ -@/* 05-19-2020 William E. Lamie Initial Version 6.0 */ -@/* 09-30-2020 William E. Lamie Modified comment(s), */ -@/* resulting in version 6.1 */ +@/* 05-19-2020 William E. Lamie Initial Version 6.0 */ +@/* 09-30-2020 William E. Lamie Modified comment(s), */ +@/* resulting in version 6.1 */ +@/* 03-02-2021 Scott Larson Modified comment(s), add */ +@/* low power code, */ +@/* resulting in version 6.1.5 */ @/* */ @/**************************************************************************/ @VOID _tx_thread_schedule(VOID) @@ -222,11 +229,25 @@ __tx_ts_wait: LDR r1, [r2] @ Pickup the next thread to execute pointer STR r1, [r0] @ Store it in the current pointer CBNZ r1, __tx_ts_ready @ If non-NULL, a new thread is ready! + +#ifdef TX_LOW_POWER + PUSH {r0-r3} + BL tx_low_power_enter @ Possibly enter low power mode + POP {r0-r3} +#endif + #ifdef TX_ENABLE_WFI DSB @ Ensure no outstanding memory transactions WFI @ Wait for interrupt ISB @ Ensure pipeline is flushed #endif + +#ifdef TX_LOW_POWER + PUSH {r0-r3} + BL tx_low_power_exit @ Exit low power mode + POP {r0-r3} +#endif + CPSIE i @ Enable interrupts B __tx_ts_wait @ Loop to continue waiting @ |