diff options
| author | hathach <[email protected]> | 2014-03-12 17:18:50 +0700 |
|---|---|---|
| committer | hathach <[email protected]> | 2014-03-12 17:18:50 +0700 |
| commit | d98bc0a64bb7ff468eb0ccede7ef14deb4a90bbf (patch) | |
| tree | 0d19762d58e7cb83e596b893f30266c4deb11132 /boards/printf_retarget.c | |
| parent | a7e14b4646904191899ce4c1b9b88381a5ff4892 (diff) | |
move boards to root folder
Diffstat (limited to 'boards/printf_retarget.c')
| -rw-r--r-- | boards/printf_retarget.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/boards/printf_retarget.c b/boards/printf_retarget.c new file mode 100644 index 000000000..ee95f25ef --- /dev/null +++ b/boards/printf_retarget.c @@ -0,0 +1,163 @@ +/**************************************************************************/
+/*!
+ @file printf_retarget.c
+ @author hathach (tinyusb.org)
+
+ @section LICENSE
+
+ Software License Agreement (BSD License)
+
+ Copyright (c) 2013, hathach (tinyusb.org)
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the copyright holders nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+ EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ This file is part of the tinyusb stack.
+*/
+/**************************************************************************/
+
+#include "board.h"
+
+#if CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
+
+#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
+ #define retarget_getchar() board_uart_getchar()
+ #define retarget_putchar(c) board_uart_putchar(c);
+#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
+ volatile int32_t ITM_RxBuffer; // keil variable to read from SWO
+ #define retarget_getchar() ITM_ReceiveChar()
+ #define retarget_putchar(c) ITM_SendChar(c)
+#else
+ #error Target is not implemented yet
+#endif
+
+//--------------------------------------------------------------------+
+// LPCXPRESSO / RED SUITE
+//--------------------------------------------------------------------+
+#if defined __CODE_RED
+
+#if CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
+ #error author does not know how to retarget SWO with lpcxpresso/red-suite
+#endif
+
+// Called by bottom level of printf routine within RedLib C library to write
+// a character. With the default semihosting stub, this would write the character
+// to the debugger console window . But this version writes
+// the character to the UART.
+int __sys_write (int iFileHandle, char *buf, int length)
+{
+ (void) iFileHandle;
+
+ for (int i=0; i<length; i++)
+ {
+ if (buf[i] == '\n') retarget_putchar('\r');
+
+ retarget_putchar( buf[i] );
+ }
+
+ return length;
+}
+
+// Called by bottom level of scanf routine within RedLib C library to read
+// a character. With the default semihosting stub, this would read the character
+// from the debugger console window (which acts as stdin). But this version reads
+// the character from the UART.
+int __sys_readc (void)
+{
+ return (int) retarget_getchar();
+}
+
+//--------------------------------------------------------------------+
+// KEIL
+//--------------------------------------------------------------------+
+#elif defined __CC_ARM // keil
+
+struct __FILE {
+ uint32_t handle;
+};
+
+void _ttywrch(int ch)
+{
+ if ( ch == '\n' ) retarget_putchar('\r');
+
+ retarget_putchar(ch);
+}
+
+int fgetc(FILE *f)
+{
+ return retarget_getchar();
+}
+
+int fputc(int ch, FILE *f)
+{
+ _ttywrch(ch);
+ return ch;
+}
+
+//--------------------------------------------------------------------+
+// IAR
+//--------------------------------------------------------------------+
+#elif defined __ICCARM__ // TODO could not able to retarget to UART with IAR
+
+#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
+#include <stddef.h>
+
+size_t __write(int handle, const unsigned char *buf, size_t length)
+{
+ /* Check for the command to flush all handles */
+ if (handle == -1) return 0;
+
+ /* Check for stdout and stderr (only necessary if FILE descriptors are enabled.) */
+ if (handle != 1 && handle != 2) return -1;
+
+ for (size_t i=0; i<length; i++)
+ {
+ if (buf[i] == '\n') retarget_putchar('\r');
+
+ retarget_putchar( buf[i] );
+ }
+
+ return length;
+}
+
+size_t __read(int handle, unsigned char *buf, size_t bufSize)
+{
+ /* Check for stdin (only necessary if FILE descriptors are enabled) */
+ if (handle != 0) return -1;
+
+ size_t i;
+ for (i=0; i<bufSize; i++)
+ {
+ uint8_t ch = board_uart_getchar();
+ if (ch == 0) break;
+ buf[i] = ch;
+ }
+
+ return i;
+}
+
+#endif
+
+#endif
+
+#endif // CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
|