Nugroho's blog.: assembler

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Showing posts with label assembler. Show all posts
Showing posts with label assembler. Show all posts
Monday, June 1, 2015

Timer Time: Using Internal ATTiny13A Chip’s Timer, Automatic Mode, With Duty Cycle, and Phase Correction

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The problem with the previous code is the phase, and it didn’t arise until we applied it on some ‘real’ hardware. Some hardware, like motor ...

Timer Time: Using Internal ATTiny13A   Chip’s Timer, Automatic Mode, With Duty Cycle

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Now , how to set the duty cycle? Uh, what’s duty cycle? Well, our previous program have the LED output turned on and off with certain freque...

Timer Time: Using Internal ATTiny13A Chip’s Timer, CTC with Automatic Mode

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What if we want it to do the task automatically? With neither interrupt routine nor call command?. We could use CTC mode . The TCNT0 will st...
Saturday, May 30, 2015

Timer Time: Using Internal ATTiny13A Chip’s Timer, "OVF" Interrupt Mode (slightly modified)

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We could speeding the timer by pre-loading TCNT0 with a value between 0 and 255, so TCNT0’ll start count at our own value instead of zero.  ...

Timer Time: Using Internal ATTiny13A Chip’s Timer, "OVF" Interrupt Mode

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Using interrupt, we have a subroutine that regularly called, automatically. It called when overflow flag (OVF) is set. As always, the timer/...
Friday, May 29, 2015

Timer Time: Using Internal ATTiny13A Chip’s Timer “CTC” Mode

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Clear Timer on Compare (CTC) as its name suggests, will clear the flag if counter has same value with compare value.  Thus, TCNT0 still co...

Timer Time: Using Internal ATTiny13A Chip’s Timer “Normal” Mode (Slightly Modified)

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Our timer is static, it have to wait TCNT0 to count from 0 to 255 and then start over. We could modify it so it count from x to 255 to make ...

Timer Time: Using Internal ATTiny13A Chip’s Timer “Normal” Mode

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Chip’s Internal Timer in ’Normal' mode will count from 0 to 255, set the overflow flag TOV0 to 0 and count again from 0 to 255, set the ...
Thursday, May 28, 2015

And Finally the Breathing LED is Here, :)

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Jonathan Ive style, Old Macbook Pro sleep indicator LED. Using interrupt, fast PWM on ATTiny13A. .include "../tn13Adef.INC"   .de...

Flip the Bit

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Maybe it's just me, but I recently realized that we have a handy feature on ATTiny13A for flip the value of the bit. so instead of sbic ...
Wednesday, May 27, 2015

Blinking LED using Interrupt on ATTiny13A

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Here's the template .include "../tn13Adef.INC"   .def a=r16 .org $ 0000               ; startup vector     rjmp onReset .or...

Oscillating LED Blink Delay on ATTiny13A

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Based on my ADC with PWM output program . The expected result is the old school MacbookPro unibody sleep indicator LED;  Sir Jonathan Ive st...
Tuesday, May 26, 2015

Timer on ATTiny13A using Interrupt

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 It started with this .include "../tn13Adef.inc"  .org 0000  rjmp reset  .org 0003  rjmp timer reset: sbi ddrb, 0       ...
Thursday, May 21, 2015

Serial Communication at ATTiny13A (#3)

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Since we need to set the baud rate. We have to use either manual delay or timer interrupt. For now, I am trying using manual delay. Check wh...

Serial Communication at ATTiny13A (#2)

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To send  bit data, we need 10 bit. 0(start)-8bit-1(stop) so r17 now has value 10 .include   "../tn13Adef.inc"   .cseg .org   0x00 ...

Serial Communication ATTiny13A (#1)

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ATTiny didn't come with TX/RX Pins, so I have to make it by myself.  Got it from http://www.bot-thoughts.com/2012/12/attiny-software-ser...