funkfinger

> ulimit -n
256
> ulimit -n 512
> ulimit -n
512

funkfinger

DEVICE     = attiny2313
#DEVICE     = attiny85
CLOCK      = 1000000

PROGRAMMER = -c usbtiny
#PROGRAMMER = -c dragon_hvsp -P usb

# attiny2313 doesn't like dragon_hvsp setting...
#PROGRAMMER = -c dragon_pp -P usb
OBJECTS    = main.o

funkfinger

/* ripped from http://aquaticus.info/pwm-sine-wave */

uint8_t  sine_wave[256] = {
  0x80, 0x83, 0x86, 0x89, 0x8C, 0x90, 0x93, 0x96,
  0x99, 0x9C, 0x9F, 0xA2, 0xA5, 0xA8, 0xAB, 0xAE,
  0xB1, 0xB3, 0xB6, 0xB9, 0xBC, 0xBF, 0xC1, 0xC4,
  0xC7, 0xC9, 0xCC, 0xCE, 0xD1, 0xD3, 0xD5, 0xD8,
  0xDA, 0xDC, 0xDE, 0xE0, 0xE2, 0xE4, 0xE6, 0xE8,
  0xEA, 0xEB, 0xED, 0xEF, 0xF0, 0xF1, 0xF3, 0xF4,
  0xF5, 0xF6, 0xF8, 0xF9, 0xFA, 0xFA, 0xFB, 0xFC,

funkfinger

// based largely on Atmel's AVR136: Low-Jitter Multi-Channel Software PWM Application Note:
// http://www.atmel.com/dyn/resources/prod_documents/doc8020.pdf

#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>

#define CHMAX 3 // maximum number of PWM channels
#define PWMDEFAULT 0x00 // default PWM value at start up for all channels

funkfinger

DEVICE     = attiny85
CLOCK      = 1000000
PROGRAMMER = -c usbtiny
OBJECTS    = main.o
FUSES      = -U lfuse:w:0x62:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
# generated by http://www.engbedded.com/fusecalc/

AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)

funkfinger

before do
  # remove and grab the file extension
  request.path_info.sub! %r{\.([^\./]+)$}, ''
  @format=$1 || 'html'
  @charset=mime_type($1) || 'text/html'
  content_type @charset, :charset => 'utf-8'
end