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authorPerry Hung <iperry@alum.mit.edu>2010-03-30 22:03:00 -0400
committerPerry Hung <iperry@alum.mit.edu>2010-03-30 22:03:00 -0400
commit2c33d55bae8f9e0e009634072ab05302fc734a65 (patch)
tree63285f96e795fc423cd5bf573340d12f6c8d5513 /libmaple/usb.c
parent23149e9706ff0a6a338e13804456dff4c655e34b (diff)
parent1d3861ef93f8423176c6010ab606abdab00a7cbd (diff)
downloadlibrambutan-2c33d55bae8f9e0e009634072ab05302fc734a65.tar.gz
librambutan-2c33d55bae8f9e0e009634072ab05302fc734a65.zip
Merge branch 'master' into rcc-dev
Conflicts: Makefile
Diffstat (limited to 'libmaple/usb.c')
-rw-r--r--libmaple/usb.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/libmaple/usb.c b/libmaple/usb.c
new file mode 100644
index 0000000..8c312f8
--- /dev/null
+++ b/libmaple/usb.c
@@ -0,0 +1,83 @@
+#include <inttypes.h>
+#include "usb.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 usb_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 usb_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 usb_serialWriteStr(const char* outStr) {
+ u8 offset=0;
+ BootVectTable *bootVector = ((BootVectTable*)BOOTLOADER_VECT_TABLE);
+
+ while ((outStr[offset] != '\0')
+ && (offset < USB_SERIAL_BUF_SIZE)) {
+ offset++;
+ }
+
+ delay(offset*1);
+
+ bootVector->serial_count_in = (u32*) &offset;
+ usb_userToPMABufferCopy((u8*)outStr,USB_SERIAL_ENDP_TXADDR,offset);
+ _SetEPTxCount(USB_SERIAL_ENDP_TX,offset);
+ _SetEPTxValid(USB_SERIAL_ENDP_TX);
+
+}
+
+void usb_serialWriteChar(unsigned char ch) {
+ BootVectTable *bootVector = ((BootVectTable*)BOOTLOADER_VECT_TABLE);
+
+ delay(1);
+
+ *(bootVector->serial_count_in) = 1;
+ usb_userToPMABufferCopy((u8*)(&ch),USB_SERIAL_ENDP_TXADDR,1);
+ _SetEPTxCount(USB_SERIAL_ENDP_TX,1);
+ _SetEPTxValid(USB_SERIAL_ENDP_TX);
+
+}
+
+uint8_t usb_serialGetRecvLen() {
+ uint8_t count_out =_GetEPRxCount(USB_SERIAL_ENDP_RX);
+ return count_out;
+}
+
+void usb_copyRecvBuffer(unsigned char* dest, uint8_t len) {
+ ASSERT(len < USB_SERIAL_BUF_SIZE);
+ usb_PMAToUserBufferCopy((u8*)(dest),USB_SERIAL_ENDP_RXADDR,len);
+ _SetEPRxValid(USB_SERIAL_ENDP_RX);
+}
+