From 0ce2950d811b8dc11e46602e7490d795d8ddfb5d Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Mon, 8 Nov 2010 03:41:48 +0000 Subject: 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). --- Projects/AVRISP-MKII/AVRISP-MKII.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'Projects/AVRISP-MKII/AVRISP-MKII.txt') diff --git a/Projects/AVRISP-MKII/AVRISP-MKII.txt b/Projects/AVRISP-MKII/AVRISP-MKII.txt index 534af5639..d569e7e3e 100644 --- a/Projects/AVRISP-MKII/AVRISP-MKII.txt +++ b/Projects/AVRISP-MKII/AVRISP-MKII.txt @@ -105,9 +105,9 @@ * * * - * In addition, the AVR's OCR1A pin will generate a .5MHz clock, to act as an external rescue device clock - * if the fuses have been mis-set. To use the recovery clock, connect the OCR1A pin of the USB AVR to the target - * AVR's XTAL1 pin, and set the ISP programming speed to 125KHz (note: other ISP speeds will not work correctly). + * In addition, the AVR's OCR1A pin will generate a 4MHz clock, to act as an external rescue device clock if the + * fuses have been mis-set. To use the recovery clock, connect the OCR1A pin of the USB AVR to the target AVR's + * XTAL1 pin, and set the ISP programming speed to 125KHz (note: other ISP speeds will not work correctly). * * 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n * 2 See AUX line related tokens in the \ref SSec_Options section -- cgit v1.2.3