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23 lines
397 B
23 lines
397 B
extern int chx_allow_sleep; |
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void |
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chx_sleep_mode (int enable_sleep) |
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{ |
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(void)enable_sleep; |
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} |
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void __attribute__((naked)) |
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chx_idle (void) |
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{ |
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int sleep_enabled; |
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for (;;) |
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{ |
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asm ("ldr %0, %1" : "=r" (sleep_enabled): "m" (chx_allow_sleep)); |
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if (sleep_enabled) |
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{ |
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asm volatile ("wfi" : : : "memory"); |
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/* NOTE: it never comes here. Don't add lines after this. */ |
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} |
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} |
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}
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