diff options
| author | Dean <Dean@d5102386-fcda-11dd-9fdb-3debd5008f28> | 2010-11-08 03:41:48 +0000 |
|---|---|---|
| committer | Dean <Dean@d5102386-fcda-11dd-9fdb-3debd5008f28> | 2010-11-08 03:41:48 +0000 |
| commit | 0276341d61ef2d22cb6b0a7d4224cc7fc4a5748a (patch) | |
| tree | 3f070d28b9fe15ef998300769c256477669d5848 /Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c | |
| parent | 02301881c517bb20f420544b8fc9b07efeeb1d29 (diff) | |
Added board hardware driver support for the Adafruit U4 breakout board.
Fixed calculation of timer register reload values derived from F_CPU; must subtract one from the division result for the compare value to be correct.
Change AVRISP-MKII rescue clock speed to 4MHz to ensure that a 125KHz ISP speed works regardless of the target's fuses (i.e. DIV8 set).
git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@1559 d5102386-fcda-11dd-9fdb-3debd5008f28
Diffstat (limited to 'Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c')
| -rw-r--r-- | Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c index fe2f50d0..f4e9e3d3 100644 --- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c +++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c @@ -196,10 +196,10 @@ void ISPTarget_ConfigureRescueClock(void) DDRB |= (1 << 5); #endif - /* Start Timer 1 to generate a .5MHz clock on the OCR1A pin */ + /* Start Timer 1 to generate a 4MHz clock on the OCR1A pin */ TIMSK1 = 0; TCNT1 = 0; - OCR1A = (F_CPU / 2 / 500000UL); + OCR1A = ((F_CPU / 2 / 4000000UL) - 1); TCCR1A = (1 << COM1A0); TCCR1B = ((1 << WGM12) | (1 << CS10)); } |