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picow: Turn off wifi co-processor regulator when entering deep sleep #7050

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Merged
merged 1 commit into from
Oct 14, 2022
Merged

picow: Turn off wifi co-processor regulator when entering deep sleep #7050

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6 changes: 6 additions & 0 deletions ports/raspberrypi/bindings/cyw43/__init__.c
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,12 @@

static int power_management_value = PM_DISABLED;

void cyw43_enter_deep_sleep(void) {
#define WL_REG_ON 23
gpio_set_dir(WL_REG_ON, GPIO_OUT);
gpio_put(WL_REG_ON, false);
}

void bindings_cyw43_wifi_enforce_pm() {
cyw43_wifi_pm(&cyw43_state, power_management_value);
}
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1 change: 1 addition & 0 deletions ports/raspberrypi/bindings/cyw43/__init__.h
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Expand Up @@ -51,3 +51,4 @@ const mcu_pin_obj_t *validate_obj_is_pin_including_cyw43(mp_obj_t obj);
#define PM_DISABLED CONSTANT_CYW43_PM_VALUE(CYW43_NO_POWERSAVE_MODE, 200, 1, 1, 10)

extern void bindings_cyw43_wifi_enforce_pm(void);
void cyw43_enter_deep_sleep(void);
8 changes: 8 additions & 0 deletions ports/raspberrypi/common-hal/alarm/__init__.c
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Expand Up @@ -38,6 +38,10 @@

#include "shared-bindings/microcontroller/__init__.h"

#if CIRCUITPY_CYW43
#include "bindings/cyw43/__init__.h"
#endif

#include "supervisor/port.h"
#include "supervisor/shared/workflow.h"

Expand Down Expand Up @@ -204,6 +208,10 @@ void common_hal_alarm_set_deep_sleep_alarms(size_t n_alarms, const mp_obj_t *ala
void NORETURN common_hal_alarm_enter_deep_sleep(void) {
bool timealarm_set = alarm_time_timealarm_is_set();

#if CIRCUITPY_CYW43
cyw43_enter_deep_sleep();
#endif

// If there's a timealarm, just enter a very deep light sleep
if (timealarm_set) {
// Prune the clock for sleep
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