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| author | Dean Camera <dean@fourwalledcubicle.com> | 2009-12-03 00:53:45 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-12-03 00:53:45 +0000 |
| commit | f69f03cb0d02937dee018264f0ac4e9be76fc1f4 (patch) | |
| tree | 5b3d139377206a367ce3aae8a0766265981930b5 /Projects/AVRISP/Lib/PDITarget.c | |
| parent | f92b56191de02ce95c35349274ccb4e522841348 (diff) | |
| download | lufa-f69f03cb0d02937dee018264f0ac4e9be76fc1f4.tar.gz lufa-f69f03cb0d02937dee018264f0ac4e9be76fc1f4.tar.bz2 lufa-f69f03cb0d02937dee018264f0ac4e9be76fc1f4.zip | |
Started implementing the low level PDI protocol in the AVRISP project, for XMEGA device programming.
Diffstat (limited to 'Projects/AVRISP/Lib/PDITarget.c')
| -rw-r--r-- | Projects/AVRISP/Lib/PDITarget.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/Projects/AVRISP/Lib/PDITarget.c b/Projects/AVRISP/Lib/PDITarget.c new file mode 100644 index 000000000..57a1a29ee --- /dev/null +++ b/Projects/AVRISP/Lib/PDITarget.c @@ -0,0 +1,105 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, provided that the above copyright notice appear in all
+ copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#if defined(ENABLE_XPROG_PROTOCOL)
+
+/** \file
+ *
+ * Target-related functions for the PDI Protocol decoder.
+ */
+
+#define INCLUDE_FROM_PDITARGET_C
+#include "PDITarget.h"
+
+void PDITarget_SendByte(uint8_t Byte)
+{
+ PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
+
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+
+ for (uint8_t i = 0; i < 8; i++)
+ {
+ if (Byte & 0x01)
+ PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
+ else
+ PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
+
+ Byte >>= 1;
+
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ }
+
+ PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
+
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+}
+
+uint8_t PDITarget_ReceiveByte(void)
+{
+ uint8_t ReceivedByte = 0;
+
+ PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
+
+ bool FoundStartBit;
+
+ do
+ {
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ FoundStartBit = !(PDIDATA_LINE_PIN & PDIDATA_LINE_MASK);
+ } while (!FoundStartBit);
+
+ for (uint8_t i = 0; i < 8; i++)
+ {
+ if (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK)
+ ReceivedByte |= 0x01;
+
+ ReceivedByte <<= 1;
+
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ }
+
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+ PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+
+ PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
+
+ return ReceivedByte;
+}
+
+#endif
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