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Updated the software USART code in the XPLAIN Bridge application so that the incomming bits are sampled at their mid-point instead of starting point, to give maximum reliability (thanks to Anton).

This commit is contained in:
Dean Camera 2011-03-15 04:02:15 +00:00
parent 0111fb515d
commit 1a130eed6c
3 changed files with 9 additions and 3 deletions
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2
LUFA/ManPages/ChangeLog.txt
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@ -68,6 +68,8 @@
* - Changed TempDataLogger project's DS1307 driver to simplify the function interface and prevent a possible race condition
* - Changed AVRISP-MKII project to use the Watchdog interrupt for command timeouts, to reduce CPU usage and free timer 0
* for other uses
* - Updated the software USART code in the XPLAIN Bridge application so that the incomming bits are sampled at their mid-point
* instead of starting point, to give maximum reliability (thanks to Anton)
*
* <b>Fixed:</b>
* - Core:

4
LUFA/ManPages/LUFAPoweredProjects.txt
View File

@ -46,14 +46,16 @@
* - DIY PS3 controller emulator: https://code.google.com/p/diyps3controller/
* - EMUCOMBOX, a USB-RS422 adapter for E-Mu Emax samplers: http://users.skynet.be/emxp/EMUCOMBOX.htm
* - Estick JTAG, an ARM JTAG debugger: http://code.google.com/p/estick-jtag/
* - "Fingerlicking Wingdinger" (WARNING: Bad Language if no Javascript), a MIDI controller: http://noisybox.net/electronics/wingdinger/
* - "Fingerlicking Wingdinger" (WARNING: Bad language if no Javascript), a MIDI controller: http://noisybox.net/electronics/wingdinger/
* - Flyatar, a real-time fly tracking system: https://github.com/peterpolidoro/Flyatar
* - Garmin GPS USB to NMEA standard serial sentence translator: http://github.com/nall/garmin-transmogrifier/tree/master
* - Generic HID Device Creator: http://generichid.sourceforge.net/
* - Ghetto Drum, a MIDI drum controller: http://noisybox.net/art/gdrum/
* - IR Remote to Keyboard decoder: http://netzhansa.blogspot.com/2010/04/our-living-room-hi-fi-setup-needs-mp3.html
* - LED Panel controller: http://projects.peterpolidoro.net/caltech/panelscontroller/panelscontroller.htm
* - LUFA powered DDR dance mat (French): http://logicien-parfait.fr/dokuwiki/doku.php?id=projet:ddr_repair
* - Motherboard BIOS flasher: http://www.coreboot.org/InSystemFlasher
* - Multi-button Joystick (French): http://logicien-parfait.fr/dokuwiki/doku.php?id=projet:joystick
* - Nikon wireless camera remote control (Norwegian): http://hekta.org/~hpe1119/
* - PSGroove, a Playstation 3 Homebrew dongle: http://github.com/psgroove
* - Single LED Matrix Display: http://guysoft.wordpress.com/2009/10/08/bumble-b/

6
Projects/XPLAINBridge/Lib/SoftUART.c
View File

@ -81,8 +81,10 @@ ISR(INT0_vect, ISR_BLOCK)
/* Reset the number of reception bits remaining counter */
RX_BitsRemaining = 8;
/* Reset the bit reception timer */
TCNT1 = 0;
/* Reset the bit reception timer to -(1/2) of the total bit time, so that the first data bit is
* sampled mid way through the total bit time, making reception more robust.
*/
TCNT1 = -(OCR1A >> 1);
/* Check to see that the pin is still low (prevents glitches from starting a frame reception) */
if (!(SRXPIN & (1 << SRX)))