From 49148e76706e5e24c2ba7f6ccc1d7ec4736ab2f3 Mon Sep 17 00:00:00 2001
From: root <root@ka-ata-killa.ourano.james.local>
Date: Wed, 3 Mar 2021 15:24:13 +0000
Subject: support cheap chinese blue pill boards, make usb dfu compatible with
 dfuse

---
 app/vuart.c | 45 ++++++++++++++++++++++-----------------------
 1 file changed, 22 insertions(+), 23 deletions(-)

(limited to 'app/vuart.c')

diff --git a/app/vuart.c b/app/vuart.c
index 5aaf2d3..3c4ab79 100644
--- a/app/vuart.c
+++ b/app/vuart.c
@@ -82,25 +82,18 @@ static void vuart_xmit (uint8_t c)
   led1 = 100;
   ring_write_byte (&usart_tx_ring, c);
   usart_kick();
-#ifdef USB
   ring_write_byte (&cdcacm_tx_ring, c);
-#endif
 }
 
 
 static int vuart_recv_empty (void)
 {
-  if (!ring_empty (&usart_rx_ring)) {
+  if (!ring_empty (&usart_rx_ring))
     return 0;
-  }
-
-#ifdef USB
 
-  if (!ring_empty (&cdcacm_rx_ring)) {
+  if (!ring_empty (&cdcacm_rx_ring))
     return 0;
-  }
 
-#endif
   return 1;
 }
 
@@ -114,25 +107,22 @@ static int vuart_recv (uint8_t *c)
     return 0;
   }
 
-#ifdef USB
-
   if (!ring_read_byte (&cdcacm_rx_ring, c)) {
     led2 = 100;
     return 0;
   }
 
-#endif
   return -1;
 }
 
 
 static void update_lsr (void)
 {
-  if (vuart_recv_empty()) {
+  if (vuart_recv_empty())
     lsr &= ~LSR_DA;
-  } else {
+
+  else
     lsr |= LSR_DA;
-  }
 }
 
 uint8_t vuart_read (unsigned reg)
@@ -147,28 +137,33 @@ uint8_t vuart_read (unsigned reg)
       vuart_recv (&val);
       update_lsr();
       return val;
-    } else {
+    } else
       return dllr;
-    }
 
   case IER:
     //case DLLH:
     return (lcr & LCR_DLAB) ? dlhr : ier;
+
   case IIR:
     return iir;
+
   case LCR:
     return lcr;
+
   case MCR:
     return mcr;
+
   case LSR:
     update_lsr();
     val = lsr;
     lsr &= 0xe1;
     return val;
+
   case MSR:
     val = msr;
     msr &= 0xf0;
     return val;
+
   case SR:
     return sr;
   }
@@ -183,29 +178,33 @@ void vuart_write (unsigned reg, uint8_t val)
   case RXR:
 
     //case DLLR:
-    if (! (lcr & LCR_DLAB)) {
+    if (! (lcr & LCR_DLAB))
       vuart_xmit (val);
-    } else {
+
+    else
       dllr = val;
-    }
 
     break;
+
   case IER:
 
     //case DLHR:
-    if (! (lcr & LCR_DLAB)) {
+    if (! (lcr & LCR_DLAB))
       ier = val & 0xf;
-    } else {
+
+    else
       dlhr = val;
-    }
 
     break;
+
   case LCR:
     lcr = val;
     break;
+
   case MCR:
     mcr = val & 0x1f;
     break;
+
   case SR:
     sr = val;
     break;
-- 
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