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| author | Christian Starkjohann <cs+github@obdev.at> | 2008-10-20 17:42:52 +0000 |
|---|---|---|
| committer | Christian Starkjohann <cs+github@obdev.at> | 2008-10-20 17:42:52 +0000 |
| commit | ba297b27bd708d35803341cd49c826f2061f9a9b (patch) | |
| tree | 2f2f4821fff2206607a3b880e3ce974671b97ddc | |
| parent | 055b06771fe7265f3134d15d94b303368a65d0d6 (diff) | |
| download | v-usb-ba297b27bd708d35803341cd49c826f2061f9a9b.tar.gz v-usb-ba297b27bd708d35803341cd49c826f2061f9a9b.tar.bz2 v-usb-ba297b27bd708d35803341cd49c826f2061f9a9b.zip | |
- Added reference to Henrik Haftmann for oscillator sync
| -rw-r--r-- | libs-device/osctune.h | 2 | ||||
| -rw-r--r-- | usbdrv/Changelog.txt | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/libs-device/osctune.h b/libs-device/osctune.h index a48f884..d1e34a0 100644 --- a/libs-device/osctune.h +++ b/libs-device/osctune.h @@ -35,6 +35,8 @@ range and allows a precision of better than +/-1%. A prescaler factor of 8 allows tuning to slightly more than +/-6% of the default frequency and is more precise than one step of OSCCAL. It is therefore not suitable to tune an 8 MHz oscillator to 12.5 MHz. + +Thanks to Henrik Haftmann for the idea to this routine! */ #define TIMER0_PRESCALING 64 /* must match the configuration for TIMER0 in main */ diff --git a/usbdrv/Changelog.txt b/usbdrv/Changelog.txt index 9d6844d..c1d2d5f 100644 --- a/usbdrv/Changelog.txt +++ b/usbdrv/Changelog.txt @@ -249,3 +249,5 @@ Scroll down to the bottom to see the most recent changes. - Added a module for 12.8 MHz RC oscillator with PLL in receiver loop. - Added hook to SOF code so that oscillator can be tuned to USB frame clock. - Added timeout to waitForJ loop. Helps preventing unexpected hangs. + - Added example code for oscillator tuning to libs-device (thanks to + Henrik Haftmann for the idea to this routine). |