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Implement remote wakeup + perhaps better sleep?

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This commit is contained in:
Nathan Conrad 2019-09-16 20:25:50 -04:00
parent 6b9783cead
commit d341337c6a
1 changed files with 13 additions and 1 deletions
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14
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
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@ -308,6 +308,17 @@ void dcd_set_config (uint8_t rhport, uint8_t config_num)
void dcd_remote_wakeup(uint8_t rhport) void dcd_remote_wakeup(uint8_t rhport)
{ {
(void) rhport; (void) rhport;
uint32_t start;
USB->CNTR |= (uint16_t)USB_CNTR_RESUME;
/* Wait 1 to 15 ms */
/* Busy loop is bad, but the osal_task_delay() isn't implemented for the "none" OSAL */
start = board_millis();
while ((board_millis() - start) < 2)
{
;
}
USB->CNTR &= (uint16_t)(~USB_CNTR_RESUME);
} }
// I'm getting a weird warning about missing braces here that I don't // I'm getting a weird warning about missing braces here that I don't
@ -538,10 +549,10 @@ static void dcd_fs_irqHandler(void) {
} }
if (int_status & USB_ISTR_WKUP) if (int_status & USB_ISTR_WKUP)
{ {
reg16_clear_bits(&USB->CNTR, USB_CNTR_LPMODE); reg16_clear_bits(&USB->CNTR, USB_CNTR_LPMODE);
reg16_clear_bits(&USB->CNTR, USB_CNTR_FSUSP); reg16_clear_bits(&USB->CNTR, USB_CNTR_FSUSP);
reg16_clear_bits(&USB->ISTR, USB_ISTR_WKUP); reg16_clear_bits(&USB->ISTR, USB_ISTR_WKUP);
dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
} }
if (int_status & USB_ISTR_SUSP) if (int_status & USB_ISTR_SUSP)
@ -552,6 +563,7 @@ static void dcd_fs_irqHandler(void) {
/* clear of the ISTR bit must be done after setting of CNTR_FSUSP */ /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */
reg16_clear_bits(&USB->ISTR, USB_ISTR_SUSP); reg16_clear_bits(&USB->ISTR, USB_ISTR_SUSP);
dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
} }
if(int_status & USB_ISTR_SOF) { if(int_status & USB_ISTR_SOF) {