From 6ee79029d5eecbaea5125417731c87e765f3907c Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Mon, 5 Mar 2012 20:25:46 +0000 Subject: [PATCH] Raised the guard bits in the AVRISP-MKII clone project when in PDI and TPI to 32, to prevent communication errors on low quality connections to a target. --- LUFA/DoxygenPages/ChangeLog.txt | 2 +- Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c | 4 ++-- Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/LUFA/DoxygenPages/ChangeLog.txt b/LUFA/DoxygenPages/ChangeLog.txt index 3ba0fa4860..36954c2668 100644 --- a/LUFA/DoxygenPages/ChangeLog.txt +++ b/LUFA/DoxygenPages/ChangeLog.txt @@ -17,7 +17,7 @@ * - Core: * - Android Accessory Host property strings changed from a struct of pointer to an array to prevent unaligned access on greater than 8-bit architectures * - Library Applications: - * - None + * - Raised the guard bits in the AVRISP-MKII clone project when in PDI and TPI to 32, to prevent communication errors on low quality connections to a target * * Fixed: * - Core: diff --git a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c index 921fe015f0..b8832372f4 100644 --- a/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c +++ b/Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c @@ -128,9 +128,9 @@ bool TINYNVM_EnableTPI(void) /* Enable TPI programming mode with the attached target */ XPROGTarget_EnableTargetTPI(); - /* Lower direction change guard time to 0 USART bits */ + /* Lower direction change guard time to 32 USART bits */ XPROGTarget_SendByte(TPI_CMD_SSTCS | TPI_CTRL_REG); - XPROGTarget_SendByte(0x07); + XPROGTarget_SendByte(0x02); /* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */ XPROGTarget_SendByte(TPI_CMD_SKEY); diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c index 567bd57772..e1169d5f16 100644 --- a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c +++ b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c @@ -131,9 +131,9 @@ bool XMEGANVM_EnablePDI(void) XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG); XPROGTarget_SendByte(PDI_RESET_KEY); - /* Lower direction change guard time to 0 USART bits */ + /* Lower direction change guard time to 32 USART bits */ XPROGTarget_SendByte(PDI_CMD_STCS | PDI_CTRL_REG); - XPROGTarget_SendByte(0x07); + XPROGTarget_SendByte(0x02); /* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */ XPROGTarget_SendByte(PDI_CMD_KEY);