add bus suspend & resume support for esp32s2

2 files changed, 21 insertions, 5 deletions

diff --git a/src/portable/espressif/esp32s2/dcd_esp32s2.c b/src/portable/espressif/esp32s2/dcd_esp32s2.c
index 58d92e728..81e63816e 100644
--- a/src/portable/espressif/esp32s2/dcd_esp32s2.c
+++ b/src/portable/espressif/esp32s2/dcd_esp32s2.c
@@ -218,6 +218,9 @@ void dcd_set_address(uint8_t rhport, uint8_t dev_addr)
 void dcd_remote_wakeup(uint8_t rhport)
 {
   (void)rhport;
+
+  // TODO must manually clear this bit after 1-15 ms
+  // USB0.DCTL |= USB_RMTWKUPSIG_M;
 }
 
 // connect by enabling internal pull-up resistor on D+/D-
@@ -670,6 +673,7 @@ static void handle_epin_ints(void)
 static void _dcd_int_handler(void* arg)
 {
   (void) arg;
+  uint8_t const rhport = 0;
 
   const uint32_t int_status = USB0.gintsts;
   //const uint32_t int_msk = USB0.gintmsk;
@@ -695,7 +699,19 @@ static void _dcd_int_handler(void* arg)
     // the end of reset.
     USB0.gintsts = USB_ENUMDONE_M;
     enum_done_processing();
-    dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
+    dcd_event_bus_reset(rhport, TUSB_SPEED_FULL, true);
+  }
+
+  if(int_status & USB_USBSUSP_M)
+  {
+    USB0.gintsts = USB_USBSUSP_M;
+    dcd_event_bus_signal(rhport, DCD_EVENT_SUSPEND, true);
+  }
+
+  if(int_status & USB_WKUPINT_M)
+  {
+    USB0.gintsts = USB_WKUPINT_M;
+    dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
   }
 
   if (int_status & USB_OTGINT_M)
diff --git a/src/portable/st/synopsys/dcd_synopsys.c b/src/portable/st/synopsys/dcd_synopsys.c
index 9aeec79e6..c18dcde51 100644
--- a/src/portable/st/synopsys/dcd_synopsys.c
+++ b/src/portable/st/synopsys/dcd_synopsys.c
@@ -507,21 +507,21 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
 void dcd_remote_wakeup(uint8_t rhport)
 {
   (void) rhport;
+
+  // TODO must manually clear this bit after 1-15 ms
+  // USB_OTG_DeviceTypeDef * dev = DEVICE_BASE(rhport);
+  // dev->DCTL |= USB_OTG_DCTL_RWUSIG;
 }
 
 void dcd_connect(uint8_t rhport)
 {
-  (void) rhport;
   USB_OTG_DeviceTypeDef * dev = DEVICE_BASE(rhport);
-
   dev->DCTL &= ~USB_OTG_DCTL_SDIS;
 }
 
 void dcd_disconnect(uint8_t rhport)
 {
-  (void) rhport;
   USB_OTG_DeviceTypeDef * dev = DEVICE_BASE(rhport);
-
   dev->DCTL |= USB_OTG_DCTL_SDIS;
 }