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Only issue the REPEAT instruction in the clone programmer if needed to reduce protocol overhead.

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This commit is contained in:
Dean Camera
2013-10-27 18:15:03 +01:00
parent 7024bb4c79
commit cf41d16bc7
1 changed files with 6 additions and 3 deletions
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9
Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
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@@ -240,9 +240,12 @@ bool XMEGANVM_ReadMemory(const uint32_t ReadAddress,
XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
XMEGANVM_SendAddress(ReadAddress);
/* Send the REPEAT command with the specified number of bytes to read */
XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
XPROGTarget_SendByte(ReadSize - 1);
if (ReadSize > 1)
{
/* Send the REPEAT command with the specified number of bytes to read */
XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
XPROGTarget_SendByte(ReadSize - 1);
}
/* Send a LD command with indirect access and post-increment to read out the bytes */
XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);