Add uart status notif to cdc_dual_ports example.

hathach · Apr 11, 2024 · a10323c · a10323c
1 parent ea95e7d
commit a10323c
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Showing 2 changed files with 14 additions and 5 deletions.
diff --git a/examples/device/cdc_dual_ports/src/main.c b/examples/device/cdc_dual_ports/src/main.c
@@ -94,7 +94,6 @@ void tud_umount_cb(void) {
   blink_interval_ms = BLINK_NOT_MOUNTED;
 }
 
-
 //--------------------------------------------------------------------+
 // USB CDC
 //--------------------------------------------------------------------+
@@ -115,6 +114,16 @@ static void cdc_task(void) {
         echo_serial_port(0, buf, count);
         echo_serial_port(1, buf, count);
       }
+
+      // Press on-board button to send Uart status notification
+      static uint32_t btn_prev = 0;
+      static cdc_uart_state_t state = {0};
+      uint32_t btn = board_button_read();
+      if (!btn_prev && btn) {
+        state.bTxCarrier ^= 1;
+        tud_cdc_send_uart_state(state);
+      }
+      btn_prev = btn;
     }
   }
 }

diff --git a/examples/device/cdc_dual_ports/src/usb_descriptors.c b/examples/device/cdc_dual_ports/src/usb_descriptors.c
@@ -136,10 +136,10 @@ uint8_t const desc_fs_configuration[] =
   TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
 
   // 1st CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 8, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 64),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 10, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 64),
 
   // 2nd CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 8, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 64),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 10, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 64),
 };
 
 #if TUD_OPT_HIGH_SPEED
@@ -151,10 +151,10 @@ uint8_t const desc_hs_configuration[] =
   TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
 
   // 1st CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 8, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 512),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 10, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 512),
 
   // 2nd CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 8, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 512),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 10, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 512),
 };
 
 // device qualifier is mostly similar to device descriptor since we don't change configuration based on speed