STATIC mp_obj_t machine_deepsleep(void) {
// default to sleep forever
uint32_t sleep_us = 0;
// see if RTC.ALARM0 should wake the device
if (pyb_rtc_alarm0_wake & MACHINE_WAKE_DEEPSLEEP) {
uint64_t t = pyb_rtc_get_us_since_2000();
if (pyb_rtc_alarm0_expiry <= t) {
sleep_us = 1; // alarm already expired so wake immediately
} else {
uint64_t delta = pyb_rtc_alarm0_expiry - t;
if (delta <= 0xffffffff) {
// sleep for the desired time
sleep_us = delta;
} else {
// overflow, just set to maximum sleep time
sleep_us = 0xffffffff;
}
}
}
// prepare for RTC reset at wake up
rtc_prepare_deepsleep(sleep_us);
// put the device in a deep-sleep state
system_deep_sleep_set_option(0); // default power down mode; TODO check this
system_deep_sleep(sleep_us);
for (;;) {
// we must not return
ets_loop_iter();
}
return mp_const_none;
}
bool ets_run(void) {
#if USE_ETS_TASK
#if SDK_BELOW_1_1_1
ets_isr_attach(10, my_timer_isr, NULL);
#endif
_ets_run();
#else
// ets_timer_init();
*(char*)0x3FFFC6FC = 0;
ets_intr_lock();
printf("ets_alt_task: ets_run\n");
#if DEBUG
dump_tasks();
#endif
ets_intr_unlock();
while (1) {
if (!ets_loop_iter()) {
//printf("idle\n");
ets_intr_lock();
if (idle_cb) {
idle_cb(idle_arg);
}
asm("waiti 0");
ets_intr_unlock();
}
}
#endif
}
void ets_event_poll(void) {
ets_loop_iter();
if (MP_STATE_VM(mp_pending_exception) != NULL) {
mp_obj_t obj = MP_STATE_VM(mp_pending_exception);
MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
nlr_raise(obj);
}
}
STATIC void machine_hspi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) {
(void)self_in;
if (dest == NULL) {
// fast case when we only need to write data
size_t chunk_size = 1024;
size_t count = len / chunk_size;
size_t i = 0;
for (size_t j = 0; j < count; ++j) {
for (size_t k = 0; k < chunk_size; ++k) {
spi_tx8fast(HSPI, src[i]);
++i;
}
ets_loop_iter();
}
while (i < len) {
spi_tx8fast(HSPI, src[i]);
++i;
}
} else {
// we need to read and write data
// Process data in chunks, let the pending tasks run in between
size_t chunk_size = 1024; // TODO this should depend on baudrate
size_t count = len / chunk_size;
size_t i = 0;
for (size_t j = 0; j < count; ++j) {
for (size_t k = 0; k < chunk_size; ++k) {
dest[i] = spi_transaction(HSPI, 0, 0, 0, 0, 8, src[i], 8, 0);
++i;
}
ets_loop_iter();
}
while (i < len) {
dest[i] = spi_transaction(HSPI, 0, 0, 0, 0, 8, src[i], 8, 0);
++i;
}
}
}
int mp_hal_stdin_rx_chr(void) {
for (;;) {
int c = ringbuf_get(&stdin_ringbuf);
if (c != -1) {
return c;
}
#if 0
// Idles CPU but need more testing before enabling
if (!ets_loop_iter()) {
asm("waiti 0");
}
#else
mp_hal_delay_us(1);
#endif
}
}
void ets_event_poll(void) {
ets_loop_iter();
mp_handle_pending();
}
