From 7021adc50a041bfb69bc4432b712aa07ef710ca3 Mon Sep 17 00:00:00 2001
From: "ajmeyer@mit.edu" <ajmeyer@mit.edu@749a229e-a60e-11de-b98f-4500b42dc123>
Date: Sat, 19 Dec 2009 08:03:54 +0000
Subject: added USB support (TX over virtual com port), the linker
 modifications to work with the bootloader, a modified libcs-lanchon-stm32.a,
 and the arduino-required main.cxx and WProgram.h

git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@72 749a229e-a60e-11de-b98f-4500b42dc123
---
 src/lib/usb.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/lib/usb.c

(limited to 'src/lib/usb.c')

diff --git a/src/lib/usb.c b/src/lib/usb.c
new file mode 100644
index 0000000..e0d7d42
--- /dev/null
+++ b/src/lib/usb.c
@@ -0,0 +1,56 @@
+#include "usb.h"
+#include <inttypes.h>
+
+void usb_lpIRQHandler(void)
+{
+  typedef void (*funcPtr)(void);
+  
+  const uint32_t usbIsrAddr = *(uint32_t*)(USB_ISR_ADDR);
+  void (*ptrToUsbISR)(void) = (funcPtr) usbIsrAddr;
+  ptrToUsbISR();
+}
+
+void UserToPMABufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
+{
+  u32 n = (wNBytes + 1) >> 1;   /* n = (wNBytes + 1) / 2 */
+  u32 i, temp1, temp2;
+  u16 *pdwVal;
+  pdwVal = (u16 *)(wPMABufAddr * 2 + PMAAddr);
+  for (i = n; i != 0; i--)
+    {
+      temp1 = (u16) * pbUsrBuf;
+      pbUsrBuf++;
+      temp2 = temp1 | (u16) * pbUsrBuf << 8;
+      *pdwVal++ = temp2;
+      pdwVal++;
+      pbUsrBuf++;
+    }
+}
+
+void PMAToUserBufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
+{
+  u32 n = (wNBytes + 1) >> 1;/* /2*/
+  u32 i;
+  u32 *pdwVal;
+  pdwVal = (u32 *)(wPMABufAddr * 2 + PMAAddr);
+  for (i = n; i != 0; i--)
+    {
+      *(u16*)pbUsrBuf++ = *pdwVal++;
+      pbUsrBuf++;
+    }
+}
+
+void serialWriteStr(char* outStr) {
+  u8 offset=0;
+  while ((outStr[offset] != 0)
+	 && (offset < USB_SERIAL_BUF_SIZE)) {
+    offset++;
+  }
+
+  while (_GetEPTxCount(USB_SERIAL_ENDP_TX) > 0) {}
+
+  UserToPMABufferCopy(outStr,USB_SERIAL_ENDP_TXADDR,offset);
+  _SetEPTxCount(USB_SERIAL_ENDP_TX,offset);
+  _SetEPTxValid(USB_SERIAL_ENDP_TX);
+}
+
-- 
cgit v1.2.3