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add link to errata

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This commit is contained in:
Joey Castillo 2021-08-08 15:14:36 -04:00
parent ac7807d9f5
commit ca96db1ef5
1 changed files with 7 additions and 6 deletions
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13
watch-library/watch/watch.h
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@ -428,12 +428,13 @@ uint32_t watch_get_backup_data(uint8_t reg);
* Waking from backup is effectively like waking from reset, except that your @ref * Waking from backup is effectively like waking from reset, except that your @ref
* app_wake_from_deep_sleep function will be called. * app_wake_from_deep_sleep function will be called.
* @warning In initial testing, it seems like the ALARM_BTN pin (PA02 RTC/IN2) cannot wake the device * @warning In initial testing, it seems like the ALARM_BTN pin (PA02 RTC/IN2) cannot wake the device
from deep sleep mode. There is an errata note (Reference: 15010, linked) that says that * from deep sleep mode. There is an errata note (Reference: 15010, linked) that says that
due to a silicon bug, PB01 cannot be used as RTC/IN2. It seems though that this bug may * due to a silicon bug, PB01 cannot be used as RTC/IN2. It seems though that this bug may
also affect PA02. As a result — and I'm very bummed about this — you cannot use deep sleep * also affect PA02. As a result — and I'm very bummed about this — you cannot use deep sleep
mode unless you set up an external wake interrupt using a device on the nine-pin connector * mode unless you set up an external wake interrupt using a device on the nine-pin connector
(i.e. an accelerometer with an interrupt pin). Otherwise your only option for waking will * (i.e. an accelerometer with an interrupt pin). Otherwise your only option for waking will
be to unscrew the watch case and press the reset button on the back of the board. * be to unscrew the watch case and press the reset button on the back of the board.
* http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_L22_Family_Errata_DS80000782B.pdf
*/ */
void watch_enter_deep_sleep(); void watch_enter_deep_sleep();
/// @} /// @}