amiro-os / boards / PowerManagement / wakeup.c @ e5606def
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1 | 58fe0e0b | Thomas Schöpping | #include <ch.h> |
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2 | #include <hal.h> |
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3 | |||
4 | #include <board.h> |
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5 | #include "wakeup.h" |
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6 | |||
7 | enum wakeup_mode wakeup_mode;
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8 | enum wakeup_source wakeup_source;
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9 | |||
10 | void standby_wakeup_source(void) { |
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11 | |||
12 | uint32_t csr = PWR->CSR; |
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13 | uint32_t gpioc_val = palReadPort(GPIOC); |
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14 | |||
15 | // default to POR
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16 | wakeup_mode = WAKE_MODE_POR; |
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17 | wakeup_source = WAKE_SRC_UNKN; |
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18 | |||
19 | // make sure reset while powered on looks like POR
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20 | PWR->CR |= (PWR_CR_CSBF); |
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21 | |||
22 | if ((csr & (PWR_CSR_SBF | PWR_CSR_WUF)) == (PWR_CSR_SBF | PWR_CSR_WUF)) {
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23 | |||
24 | // wakeup or RTC event from standby mode
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25 | // default to WKUP
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26 | wakeup_mode = WAKE_MODE_STDBY; |
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27 | wakeup_source = WAKE_SRC_WKUP; |
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28 | |||
29 | if (gpioc_val & (1u << GPIOC_PATH_DC)) |
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30 | wakeup_source |= WAKE_SRC_PATHDC_CONNECT; |
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31 | |||
32 | if (!(gpioc_val & (1u << GPIOC_TOUCH_INT_N))) |
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33 | wakeup_source |= WAKE_SRC_TOUCH_INT; |
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34 | |||
35 | /*
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36 | * default to SYS_PD_N source when
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37 | * no other reason for wakeup was found.
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38 | */
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39 | if (wakeup_source == WAKE_SRC_WKUP)
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40 | wakeup_source |= WAKE_SRC_SYS_PD_N; |
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41 | |||
42 | } |
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43 | |||
44 | } |
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45 | |||
46 | void stop_wakeup_source(void) { |
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47 | |||
48 | wakeup_mode = WAKE_MODE_STOP; |
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49 | wakeup_source = WAKE_SRC_UNKN; |
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50 | |||
51 | } |