Fixed PDI/TPI programming speed of ~250KHz in the AVRISP-MKII Clone project, instead...

diff --git a/LUFA/ManPages/ChangeLog.txt b/LUFA/ManPages/ChangeLog.txt
index 53b7cb8..7d4b2c1 100644 (file)
--- a/LUFA/ManPages/ChangeLog.txt
+++ b/LUFA/ManPages/ChangeLog.txt
@@ -101,6 +101,7 @@
   *  - Fixed USBtoSerial and XPLAINBridge demos discarding data from the PC if the send buffer becomes full
   *  - Fixed broken input in the MagStripe reader project due to an incorrect HID report descriptor
   *  - Fixed incorrect PollingIntervalMS values in the demo/project/bootloader endpoint descriptors (thanks to MCS Electronics)
+  *  - Fixed PDI/TPI programming speed of ~250KHz in the AVRISP-MKII Clone project, instead of the desired 500KHz
   *
   *  \section Sec_ChangeLog100807 Version 100807
   *  <b>New:</b>

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
index f4e9e3d..d315e9d 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
@@ -199,7 +199,7 @@ void ISPTarget_ConfigureRescueClock(void)
        /* Start Timer 1 to generate a 4MHz clock on the OCR1A pin */
        TIMSK1 = 0;
        TCNT1  = 0;
-       OCR1A  = ((F_CPU / 2 / 4000000UL) - 1);
+       OCR1A  = ((F_CPU / 2 / ISP_RESCUE_CLOCK_SPEED) - 1);
        TCCR1A = (1 << COM1A0);
        TCCR1B = ((1 << WGM12) | (1 << CS10));
 }

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
index c467298..aae4c5b 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
@@ -59,8 +59,11 @@
                /** Low level device command to issue an extended FLASH address, for devices with other 128KB of FLASH. */
                #define LOAD_EXTENDED_ADDRESS_CMD     0x4D
 
-               /** Macro to convert an ISP frequency to a number of timer clock cycles for the software SPI driver */
-               #define TIMER_COMP(freq) ((((F_CPU / 8) / freq) / 2) - 1)
+               /** Macro to convert an ISP frequency to a number of timer clock cycles for the software SPI driver. */
+               #define TIMER_COMP(freq)              (((F_CPU / 8) / 2 / freq) - 1)
+
+               /** ISP rescue clock speed, for clocking targets with incorrectly set fuses. */
+               #define ISP_RESCUE_CLOCK_SPEED        4000000
 
        /* External Variables: */
                extern bool HardwareSPIMode;

diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
index f0ef2b6..5d59f7f 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
@@ -79,7 +79,7 @@ void XPROGTarget_EnableTargetTPI(void)
        DDRD &= ~(1 << 2);
 
        /* Set up the synchronous USART for TINY communications - 8 data bits, even parity, 2 stop bits */
-       UBRR1  = (F_CPU / XPROG_HARDWARE_SPEED);
+       UBRR1  = ((F_CPU / 2 / XPROG_HARDWARE_SPEED) - 1);
        UCSR1B = (1 << TXEN1);
        UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);