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Are port B6 and B7 disconnected when fuse Ext. Crystal? I am using Mega48 with external crystal and port B bits 0..5 as outputs. If I OUT portb,r16 does it matter if bits 6 and 7 are on or should I mask them before the OUT or use SBI... |
Tuesday, 31 July 2007 - 06:24 |
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Need help with reference to ground voltage reading ATinys I am working on an avr digital current meter idea. I use a resistor network to drop the voltage to the pin threshold to switch from charging one capacitor to transfering the... |
Sunday, 22 July 2007 - 04:42 |
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Dragon users, how do you do it? I set mine up for HVSP programming tiny11,12,13,45...s The thing I don't like is unplugging the usb cable every time I swap the chip out , test it, and reprogram it. Is there a... |
Thursday, 31 May 2007 - 20:04 |
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Tiny programs for Tiny11 I was working on a dimmer program for the tiny11 and then came up with this idea. Since the internal oscillator on the tiny 11 is voltage dependent I made a variable frequency... |
Thursday, 31 May 2007 - 14:49 |
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(NEW) HELP HVSP mode Tiny11 Dragon NEW-> I posted the thread below last week. No problem programming the same chip every day for the last week. Finished programming ready to make 20 chips and 50% of them refuse to... |
Thursday, 17 May 2007 - 05:34 |
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Generating a software interrupt technical question I am working on a project on a Mega48 using an interrupt to clock in data from a 2 wire interface. I use the 8 bit timer0 in Normal mode to set a timeout window that allows 8 bits... |
Monday, 7 May 2007 - 03:27 |
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Some problems with SRAM, MEGA48 I am using a mega48 as a co-processor that takes input through two pins from a Basic stamp sending data with shiftout and receiving data with shiftin. One of the functions I wrote... |
Saturday, 28 April 2007 - 04:57 |
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Debug pin change interrupt mega48 Port C bits 3 and 4 The debugger is not working for pin change interrupts on port C pcint11..13. A low level on those pins trigger the interrupt every cycle. Even when the PCIFR - pcif1 is written... |
Saturday, 21 April 2007 - 06:25 |
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IRDA Controller Mega48 Project I am working with a mega48 as a memory storage device for Flash storage, temporary Sram storage, eprom storage, as well as allowing commands to make use of the ADC's the PWM... |
Tuesday, 17 April 2007 - 19:40 |
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Ok 5AM and I cant find this wierd bug MEGA48 The full code is attached. The main parts of the code are below. This is just stupid. I have a register mclock that seems to get random numbers in it anytime I uncomment the ROL... |
Sunday, 15 April 2007 - 11:08 |
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Message No WinAVR Found After using the simulator and crashing it because I was playing with self programming and overwriting the flash using SPM I rebooted the software and now all of my programs still... |
Saturday, 14 April 2007 - 07:15 |
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Connecting SRAM I/O pins to AVR I am adding an SRAM chip HM62256ALP-10 (32k x 8) to a project using a MEGA16L as in interface between another uC. Since the I/O lines on the SRAM can be input or output, should I... |
Thursday, 12 April 2007 - 16:03 |