Merge pull request #1020 from hathach/rp2040-disconnect-suspend

Add Rp2040 suspend & resume support

2 files changed, 7 insertions, 0 deletions

diff --git a/src/device/dcd.h b/src/device/dcd.h
index 8bfad9b72..66767c1fe 100644
--- a/src/device/dcd.h
+++ b/src/device/dcd.h
@@ -152,6 +152,7 @@ bool dcd_edpt_xfer_fifo       (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff,
 void dcd_edpt_stall           (uint8_t rhport, uint8_t ep_addr);
 
 // clear stall, data toggle is also reset to DATA0
+// This API never calls with control endpoints, since it is auto cleared when receiving setup packet
 void dcd_edpt_clear_stall     (uint8_t rhport, uint8_t ep_addr);
 
 //--------------------------------------------------------------------+
diff --git a/src/device/usbd.c b/src/device/usbd.c
index e8a50352c..8b4f4e7e3 100644
--- a/src/device/usbd.c
+++ b/src/device/usbd.c
@@ -1220,6 +1220,9 @@ bool usbd_edpt_claim(uint8_t rhport, uint8_t ep_addr)
 {
   (void) rhport;
 
+  // TODO add this check later, also make sure we don't starve an out endpoint while suspending
+  // TU_VERIFY(tud_ready());
+
   uint8_t const epnum = tu_edpt_number(ep_addr);
   uint8_t const dir   = tu_edpt_dir(ep_addr);
 
@@ -1273,6 +1276,9 @@ bool usbd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
   uint8_t const epnum = tu_edpt_number(ep_addr);
   uint8_t const dir   = tu_edpt_dir(ep_addr);
 
+  // TODO skip ready() check for now since enumeration also use this API
+  // TU_VERIFY(tud_ready());
+
   TU_LOG2("  Queue EP %02X with %u bytes ...\r\n", ep_addr, total_bytes);
 
   // Attempt to transfer on a busy endpoint, sound like an race condition !