diff options
Diffstat (limited to 'Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c')
| -rw-r--r-- | Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c new file mode 100644 index 000000000..7bcf0bea4 --- /dev/null +++ b/Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c @@ -0,0 +1,116 @@ +/*
+ 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.
+*/
+
+/** \file
+ *
+ * Target-related functions for the V2 Protocol decoder.
+ */
+
+#include "V2ProtocolTarget.h"
+
+/** Current memory address for FLASH/EEPROM memory read/write commands */
+uint32_t CurrentAddress;
+
+/** Table of masks for SPI_Init() from a given PARAM_SCK_DURATION value */
+static const uint8_t SPIMaskFromSCKDuration[] =
+ {
+ #if (F_CPU == 8000000)
+ SPI_SPEED_FCPU_DIV_2,
+ #endif
+ SPI_SPEED_FCPU_DIV_2, SPI_SPEED_FCPU_DIV_4, SPI_SPEED_FCPU_DIV_8,
+ SPI_SPEED_FCPU_DIV_16, SPI_SPEED_FCPU_DIV_32, SPI_SPEED_FCPU_DIV_64
+ #if (F_CPU == 16000000)
+ , SPI_SPEED_FCPU_DIV_128
+ #endif
+ };
+
+
+uint8_t V2Protocol_GetSPIPrescalerMask(void)
+{
+ uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
+
+ if (SCKDuration >= sizeof(SPIMaskFromSCKDuration))
+ SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1);
+
+ return SPIMaskFromSCKDuration[SCKDuration];
+}
+
+void V2Protocol_ChangeTargetResetLine(bool ResetTarget)
+{
+ if (ResetTarget)
+ {
+ RESET_LINE_DDR |= RESET_LINE_MASK;
+
+ if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY)))
+ RESET_LINE_PORT |= RESET_LINE_MASK;
+ }
+ else
+ {
+ RESET_LINE_PORT &= ~RESET_LINE_MASK;
+ RESET_LINE_DDR &= ~RESET_LINE_MASK;
+ }
+}
+
+void V2Protocol_DelayMS(uint8_t MS)
+{
+ while (MS--)
+ _delay_ms(1);
+}
+
+uint8_t V2Protocol_WaitWhileTargetBusy(void)
+{
+ uint8_t TimeoutMS = TARGET_BUSY_TIMEOUT_MS;
+ uint8_t ResponseByte;
+
+ do
+ {
+ V2Protocol_DelayMS(1);
+
+ SPI_SendByte(0xF0);
+ SPI_SendByte(0x00);
+
+ SPI_SendByte(0x00);
+ ResponseByte = SPI_ReceiveByte();
+ }
+ while ((ResponseByte & 0x01) && (TimeoutMS--));
+
+ if (!(TimeoutMS))
+ return STATUS_CMD_TOUT;
+ else
+ return STATUS_CMD_OK;
+}
+
+void V2Protocol_LoadExtendedAddress(void)
+{
+ SPI_SendByte(0x4D);
+ SPI_SendByte(0x00);
+ SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
+ SPI_SendByte(0x00);
+}
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