#include "usb_rawhid.h"
#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
-#define RF_SEND_BUFFER_LEN_MAX 128
+#define RF_SEND_BUFFER_LEN_MAX 502
+
+union multiint {
+ uint16_t u16;
+ uint8_t u8[2];
+} __attribute__((packed));
+
volatile uint16_t output_count=0;
volatile uint8_t active_buffer=0;
volatile uint16_t send_buffer=0;
volatile uint8_t capture=0;
-volatile uint8_t rf_send=0; //count of bits in rf_send_buffer that should be sent
-volatile uint8_t rf_send_reload=0; //count of bits in rf_send_buffer that should be sent
-volatile uint8_t rf_send_reload_count=0; // number of repetitions (times rf_send gets reloaded;
+volatile uint16_t rf_send_buf_pos=0; //count of bits in rf_send_buffer that should be sent
+volatile union multiint rf_send_buf_len; //count of bits in rf_send_buffer that should be sent
+volatile uint8_t rf_send_count=0; // number of repetitions (times rf_send gets reloaded;
uint8_t read_buffer[64]; // buffer for reading usb signals
uint8_t write_buffer[2][64]; // buffer for writing usb signals
uint8_t rf_send_buffer[RF_SEND_BUFFER_LEN_MAX]; // buffer for sending rf433 signals
-uint8_t rf_send_buffer_len=0;
+uint16_t rf_send_buf_offset=0;
+
+
+void reset()
+{
+ cli();
+ // disable watchdog, if enabled
+ // disable all peripherals
+ UDCON = 1;
+ USBCON = (1<<FRZCLK); // disable USB
+ UCSR1B = 0;
+ _delay_ms(5);
+ #if defined(__AVR_AT90USB162__) // Teensy 1.0
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
+ TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
+ DDRB = 0; DDRC = 0; DDRD = 0;
+ PORTB = 0; PORTC = 0; PORTD = 0;
+ asm volatile("jmp 0x3E00");
+ #elif defined(__AVR_ATmega32U4__) // Teensy 2.0
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
+ DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
+ PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+ asm volatile("jmp 0x7E00");
+ #elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+ asm volatile("jmp 0xFC00");
+ #elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+ asm volatile("jmp 0x1FC00");
+ #endif
+}
int main(void)
{
DDRF|=3;
PORTF&=~1;
// Configure timer 0 to generate a timer overflow interrupt every
- // 200*8 clock cycles, 100us
+ // 100*8 clock cycles, 50us
TCCR0A = 1<<WGM01;
TCCR0B = 1<<CS01;
- OCR0A = 249;
+ OCR0A = 99;
TCNT0 = 0;
TIMSK0 = (1<<OCIE0A);
int8_t r = usb_rawhid_recv(read_buffer, 0);
if (r>0)
{
- if (read_buffer[0]=='b') //begin capture
+ if (read_buffer[0]=='r') //reset
+ reset();
+ else if (read_buffer[0]=='b') //begin capture
capture=1;
else if (read_buffer[0]=='e') //end capture
capture=0;
else if (read_buffer[0]=='f') //fill send buffer
{
- int8_t byte_rem = r-1;
- while(byte_rem && rf_send_buffer_len<RF_SEND_BUFFER_LEN_MAX)
+ int8_t buffer_pos = 1;
+ if(!rf_send_buf_offset) {
+ rf_send_buf_len.u8[1]=read_buffer[1];
+ rf_send_buf_len.u8[0]=read_buffer[2];
+ buffer_pos+=2;
+ }
+ while(buffer_pos < r && rf_send_buf_offset<RF_SEND_BUFFER_LEN_MAX)
{
- rf_send_buffer[rf_send_buffer_len]=read_buffer[r-byte_rem];
- rf_send_buffer_len++;
- byte_rem--;
+ rf_send_buffer[rf_send_buf_offset]=read_buffer[buffer_pos];
+ rf_send_buf_offset++;
+ buffer_pos++;
}
}
else if (read_buffer[0]=='c') // clear send buffer
{
- rf_send_buffer_len=0;
+ rf_send_buf_offset=0;
}
else if (read_buffer[0]=='s') //send
{
+ //write_buffer[0][0]=rf_send_buf_len.u8[1];
+ //write_buffer[0][1]=rf_send_buf_len.u8[0];
+ //usb_rawhid_send(write_buffer, 23);
capture=0;
- if (r>2)
- rf_send_reload=rf_send_buffer_len*8-read_buffer[2]; // substract bit offset
- else
- rf_send_reload=rf_send_buffer_len*8;
- rf_send_reload_count=read_buffer[1];
+ rf_send_buf_pos=0;
+ rf_send_count=read_buffer[1]+1;
}
}
if (send_buffer)
{
send_buffer=0;
- usb_rawhid_send(write_buffer[active_buffer?0:1], 45);
+ usb_rawhid_send(write_buffer[active_buffer?0:1], 23);
}
}
}
ISR(TIMER0_COMPA_vect)
{
PORTF^=2;
- if (rf_send)
+ if (rf_send_count && rf_send_buf_pos<rf_send_buf_len.u16)
{
- if (rf_send_buffer[rf_send/8] & 0x80)
+ if ( rf_send_buffer[rf_send_buf_pos/8] & (1<< (rf_send_buf_pos%8)))
{
PORTF|=1;
} else {
PORTF&=~1;
}
- rf_send_buffer[rf_send/8]<<=1;
- rf_send--;
- } else if (rf_send_reload_count) {
- rf_send=rf_send_reload;
- } else if (capture) {
- write_buffer[active_buffer][output_count/8]<<=1;
- write_buffer[active_buffer][output_count++/8]|=PINB&1;
- if (output_count>=64*8)
- {
- output_count=0;
- active_buffer=active_buffer?0:1;
- send_buffer=1;
+ //rf_send_buffer[rf_send/8]>>=1;
+ rf_send_buf_pos++;
+ } else if (rf_send_count) {
+ rf_send_buf_pos=0;
+ rf_send_count--;
+ } else {
+ PORTF&=~1;
+ if (capture) {
+ write_buffer[active_buffer][output_count/8]<<=1;
+ write_buffer[active_buffer][output_count++/8]|=PIND&1;
+ if (output_count>=64*8)
+ {
+ output_count=0;
+ active_buffer=active_buffer?0:1;
+ send_buffer=1;
+ }
}
}
}
-
-
projects / svn42.git / blobdiff