djsundog
/
circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

adding comments

This commit is contained in:
Max Holliday 2021-10-02 15:00:18 -06:00
parent 433a901ffb
commit 7a703aaa64
1 changed files with 7 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
ports/atmel-samd/common-hal/alarm/__init__.c
View File

@ -50,7 +50,6 @@ const alarm_sleep_memory_obj_t alarm_sleep_memory_obj = {
// TODO: make a custom enum to avoid weird values like PM_SLEEPCFG_SLEEPMODE_BACKUP_Val? // TODO: make a custom enum to avoid weird values like PM_SLEEPCFG_SLEEPMODE_BACKUP_Val?
STATIC volatile uint32_t _target; STATIC volatile uint32_t _target;
STATIC bool fake_sleep; STATIC bool fake_sleep;
STATIC bool pin_alarm = false;
void alarm_reset(void) { void alarm_reset(void) {
// Reset the alarm flag // Reset the alarm flag
@ -68,7 +67,9 @@ samd_sleep_source_t alarm_get_wakeup_cause(void) {
return SAMD_WAKEUP_RTC; return SAMD_WAKEUP_RTC;
} }
if (RSTC->RCAUSE.bit.BACKUP) { if (RSTC->RCAUSE.bit.BACKUP) {
if (RTC->MODE0.INTFLAG.bit.TAMPER) { // not able to detect PinAlarm wake since registers are getting reset
// TODO: come up with a way to detect a TAMPER
if (RTC->MODE0.TAMPID.reg || RTC->MODE0.INTFLAG.bit.TAMPER) {
return SAMD_WAKEUP_GPIO; return SAMD_WAKEUP_GPIO;
} }
return SAMD_WAKEUP_RTC; return SAMD_WAKEUP_RTC;
@ -189,33 +190,30 @@ void NORETURN common_hal_alarm_enter_deep_sleep(void) {
(void)__get_FPSCR(); (void)__get_FPSCR();
} }
// hacky way of checking if time alarm or pin alarm // PinAlarm (hacky way of checking if time alarm or pin alarm)
// TODO: find better way of determining pin vs time
if (RTC->MODE0.INTENSET.bit.TAMPER) { if (RTC->MODE0.INTENSET.bit.TAMPER) {
// Disable interrupts // Disable interrupts
NVIC_DisableIRQ(RTC_IRQn); NVIC_DisableIRQ(RTC_IRQn);
// Must disable the RTC before writing to EVCTRL and TMPCTRL // Must disable the RTC before writing to EVCTRL and TMPCTRL
RTC->MODE0.CTRLA.bit.ENABLE = 0; // Disable the RTC RTC->MODE0.CTRLA.bit.ENABLE = 0; // Disable the RTC
while (RTC->MODE0.SYNCBUSY.bit.ENABLE); // Wait for synchronization while (RTC->MODE0.SYNCBUSY.bit.ENABLE); // Wait for synchronization
RTC->MODE0.CTRLA.bit.SWRST = 1; // Software reset the RTC RTC->MODE0.CTRLA.bit.SWRST = 1; // Software reset the RTC
while (RTC->MODE0.SYNCBUSY.bit.SWRST); // Wait for synchronization while (RTC->MODE0.SYNCBUSY.bit.SWRST); // Wait for synchronization
RTC->MODE0.CTRLA.reg = RTC_MODE0_CTRLA_PRESCALER_DIV1024 | // Set prescaler to 1024 RTC->MODE0.CTRLA.reg = RTC_MODE0_CTRLA_PRESCALER_DIV1024 | // Set prescaler to 1024
RTC_MODE0_CTRLA_MODE_COUNT32; // Set RTC to mode 0, 32-bit timer RTC_MODE0_CTRLA_MODE_COUNT32; // Set RTC to mode 0, 32-bit timer
// TODO: map requested pin to limited selection of TAMPER pins // TODO: map requested pin to limited selection of TAMPER pins
//PA02 = IN2
RTC->MODE0.TAMPCTRL.bit.DEBNC2 = 1; // Edge triggered when INn is stable for 4 CLK_RTC_DEB periods RTC->MODE0.TAMPCTRL.bit.DEBNC2 = 1; // Edge triggered when INn is stable for 4 CLK_RTC_DEB periods
RTC->MODE0.TAMPCTRL.bit.TAMLVL2 = 1; // rising edge RTC->MODE0.TAMPCTRL.bit.TAMLVL2 = 1; // rising edge
RTC->MODE0.TAMPCTRL.bit.IN2ACT = 1; // WAKE (doesn't save timestamp) //PA02 = IN2
RTC->MODE0.TAMPCTRL.bit.IN2ACT = 1; // WAKE on IN2 (doesn't save timestamp)
// Enable interrupts // Enable interrupts
NVIC_SetPriority(RTC_IRQn, 0); NVIC_SetPriority(RTC_IRQn, 0);
NVIC_EnableIRQ(RTC_IRQn); NVIC_EnableIRQ(RTC_IRQn);
// Set interrupts for TAMPER or overflow // Set interrupts for TAMPER or overflow
RTC->MODE0.INTENSET.reg = RTC_MODE0_INTENSET_TAMPER; RTC->MODE0.INTENSET.reg = RTC_MODE0_INTENSET_TAMPER;
// TimeAlarm
} else { } else {
// Retrieve COMP1 value before resetting RTC // Retrieve COMP1 value before resetting RTC
// Disable interrupts // Disable interrupts
@ -269,9 +267,6 @@ MP_NOINLINE void common_hal_alarm_pretending_deep_sleep(void) {
SAMD_ALARM_FLAG = 1; SAMD_ALARM_FLAG = 1;
while(RTC->MODE0.SYNCBUSY.reg); while(RTC->MODE0.SYNCBUSY.reg);
fake_sleep = true; fake_sleep = true;
// if () {
// pin_alarm=true;
// }
} else { } else {
port_idle_until_interrupt(); port_idle_until_interrupt();
} }