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https://github.com/licsber/micropython.git
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9e44383e3f
Supports suspend and hibernate modes. Waking is possible throug GPIO and WLAN. The mpcallback class is generic and can be reused by other classes.
62 lines
1.2 KiB
ArmAsm
62 lines
1.2 KiB
ArmAsm
.syntax unified
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.cpu cortex-m4
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.thumb
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.text
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.align 2
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@ global variable with the backup registers
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.extern vault_arm_registers
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@ global function that performs the wake up actions
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.extern pybsleep_suspend_exit
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@ uint sleep_store(void)
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.global sleep_store
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.thumb
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.thumb_func
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.type sleep_store, %function
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sleep_store:
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dsb
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isb
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push {r0-r12, lr}
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ldr r1, =vault_arm_registers
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mrs r0, msp
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str r0, [r1]
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mrs r0, psp
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str r0, [r1, #4]
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mrs r0, primask
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str r0, [r1, #12]
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mrs r0, faultmask
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str r0, [r1, #16]
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mrs r0, basepri
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str r0, [r1, #20]
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mrs r0, control
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str r0, [r1, #24]
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dsb
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isb
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bx lr
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@ uint sleep_restore(void)
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.global sleep_restore
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.thumb
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.thumb_func
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.type sleep_restore, %function
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sleep_restore:
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dsb
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isb
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mrs r0, msp
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msr psp, r0
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ldr r1, =vault_arm_registers
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ldr r0, [r1, #24]
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msr control, r0
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ldr r0, [r1]
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msr msp, r0
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ldr r0, [r1, #12]
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msr primask, r0
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ldr r0, [r1, #16]
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msr faultmask, r0
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ldr r0, [r1, #20]
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msr basepri, r0
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dsb
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isb
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bl pybsleep_suspend_exit
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