() _________
:
(, )
..
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____ _____________2011
- 2011
1. . 2
1.1. . 3
2. . 4
2. . 11
2.1. . 11
2.2. . 12
2.3. . 13
2.4. . 14
2.5. DataFlash. 17
2.6. . 18
2.7. . 22
3. .. 24
4. : 26
5. . 35
6. . 36
, , , AVR , AT45DB161 DataFlash .
AT45DB161 DataFlash 2.7 - . 16 4096 528 . DataFlash 2 SRAM 528 . DataFlash .
AT45DB161 SPI . , , , . DataFlash , . DataFlash SPI 13 4 . DataFlash ( 2.7 3.6).
DataFlash (SPI), , DataFlash AVR .
AVR AT90S8535 . SPI / DataFlash. . - (<550 ), AT90S2333 (28- 2 -).
- 8-
- 8
- 4
- 4 1/4
- 550
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DataFlash, . .
1.
-, ( 1) , ( 2). , . ( -), , , . , . .
2.
3000 . () .
3000 , 6000 . . , RC-, . .
, , . ( 3). . , 256 8- 10 . . . , .. (3 8 ). AT90S8535 , AGND AREF .
3.
, , , .
. , / (SNR) .
4 , . .
4.
, . . , . max ( 5).
5.
8 . DataFlash.
DataFlash . , DataFlash . ( 200K bps), , . , 8 . , , .
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, . , , . .
, .
DataFlash 1. (528 ), 529 . , . , , DataFlash. , .
DataFlash. , .
DataFlash , . , ( , ), , , DataFlash . , 510 8- .
, . , . , , . DataFlash .
6.
- (). 6, 2 3 . : - , (8 ), - . , , . .
, , , . , , , ( ).
, , .
7.
4000 , (15.686 ).
.
8 , 10- 3922 (8 / 2? 210 = 3922 ), 7843 9- , 15.686 8- .
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(15.686 ) , 4000 . , 10- 8-.
. , 8. ( , .. 8 ) , ( 1).
8.
9.
, : , . , VCC PD0PD2. GND.
LED, .
DataFlash AVR SPI. ISP AVR, Chip Select(#CS) DataFlash . ISP , .
, AVCC, VCC RC- . AVCC.
(22 ) .
10.
. R1 R9 ( = R1/R9). R4 , C1 DC . R2 R3 . R5 8 . R5 , .
.
(R6, R7, R8, C2, C7 R7, R10, R11, C9, C5) (R11, C4). () . 4000 , (15.686 ).
.
C3 DC .
, . setup ().
SPI , , , . , AVR , DataFlash . AT90S8535, , , SS I/O.
SPI AT90S8535 PortB (PB5PB7). , DataFlash PortB (PB0PB2 PB4). (PB3) LED. , Serial Clock(SCK), Master Out/Slave In(MOSI), Chip Select(#CS), Write Protect(#WP) Reset(#RST) , Master In/Slave Out(MISO) Ready/Busy(RDY/#BSY) . PB3 LED PortB, 0xBD.
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PortB : , - .
AT90S8535 PortA. PortA .
PortD . Timer1 PD4.
. , (ADC Timer1 Overflow), , .
, . , LED , , .
, , .
, LED , , .
11.
Data Flash .
12.
erase (), , , DataFlash.
SPI DataFlash. . DataFlash : MIB , AT90S8535 - .
DataFlash SCK, , #CS (SPI 0), SCK, , #CS (SPI 3), . SPI 3. , , SPI 2 , 8 .
, #CS DataFlash, (), 0x50, 9- 13 . . , SPI (SPSR) , SPI , . , #CS , . Ready/Busy DataFlash , , . , . , 512 . 0xFF.
, . ADC0, , (ADMUX) . (ADCSR) 32, , , . - . , (832 448). , , , , .
15.686 . , () .
15.686 , 510 (15.686 x 510 = 8 ). , 510 32. 14 . 14 x 32 = 448 .
, . 62 (510448), .
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10- , 2 . 10 AGND AREF ( 0 5). 2.3 3.5. 10- . 0x1D5 2.3. , 3.5, MSB. , , flash_data char (8-). 8- DataFlash .
13.
DataFlash
14. DataFlash
DataFlash , , , .
write_to_flash j , k , . , DataFlash , .
, , , .
, .
, #CS DataFlash 0x84. 14 10- . 8- .
. SPI (SPSR), SPI , . #CS .
, DataFlash. , .
, , . , , , .
, DataFlash 8- 15.686 . , , . . , 16- / 1 OC1B. / A B (TCCRA/TCCRB). , 1.
, 1, #CS DataFlash. , #CS . Ready/Busy DataFlash , , 1 . 2. , 1, DataFlash 2.
, DataFlash . SPI , SPI (SPDR) . DataFlash, SPDR AVR DataFlash.
15.
0, 1 . DataFlash . AVR, , 1 . / 1 B (OCR1B), , (255 8- ).
, .
, / 1 .
16.
17.
. , , AREF.
, DataFlash, , . .
.
(.. wait playback). . , ACIS1 ( (ACSR)) , .
15.686 ( 510 ), . (/ 0 / 2), .
1.
: 2.
3. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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4. :
/* . 1. ,
. DataFlash 1 2
.
*/
#include io8535.h
#include
#include stdlib.h
#include dataflash.h
//
void setup (void);
void erasing (void);
void recording (void);
void interrupt[ADC_vect] sample_ready (void);
void write_to_flash (unsigned char ad_data);
void playback (void);
void next_page_to_next_buffer (unsigned char active_buffer, unsigned int page_counter);
void interrupt[TIMER1_OVF1_vect] out_now(void);
void active_buffer_to_speaker (unsigned char active_buffer);
//
volatile unsigned char wait = 0;
void setup(void)
{
DDRB = 0xBD; // SPI
// SCK, MISO, MOSI, CS, LED, WP, RDYBSY, RST
// PB7, PB6, PB5, PB4, PB3, PB2, PB1, PB0
// O I O O O O I O
// 1 0 1 1 1 1 0 1
PORTB = 0xFF; // ,
(LED )
DDRA = 0x00; // Port A
PORTA = 0x00;
DDRD = 0x10; // Port D (D4: )
_SEI(); //
}
void erasing(void)
{
unsigned int block_counter = 0;
unsigned char temp = 0x80;
ACSR |= 0x02; // , ,
// , SPI , , MSB, 3 SPI, Fcl/4
SPCR = 0x5C;
while (block_counter < 512)
{
PORTB &= ~DF_CHIP_SELECT; // DataFlash
SPDR = BLOCK_ERASE;
while (!(SPSR & temp)); //
SPDR = (char)(block_counter>>3);
while (!(SPSR & temp)); //
SPDR = (char)(block_counter<<5);
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
PORTB |= DF_CHIP_SELECT; // DataFlash
block_counter++;
while(!(PINB & 0x02)); //
}
SPCR = 0x00; // SPI
}
void recording(void)
{
// , SPI , , MSB, 3 SPI, Fcl/4
SPCR = 0x5C;
ADMUX = 0x00; // = 0
ADCSR = 0xDD; // , fCK/32,
while (!(PIND & 8)); //
( 3)
ADCSR = 0x00; //
SPCR = 0x00; // SPI
}
void interrupt[ADC_vect] sample_ready(void)
{
unsigned char count = 0;
while (count < 6) count++; //
ADCSR |= 0x40; //
write_to_flash(ADC-0x1D5); // , 8
}
void write_to_flash(unsigned char flash_data)
{
static unsigned int buffer_counter;
static unsigned int page_counter;
unsigned char temp = 0x80;
if((ACSR & 0x02)) // ,
{
buffer_counter = 0;
page_counter = 0; //
ACSR &= 0xFD; //
}
while(!(PINB & 0x02)); //
PORTB &= ~DF_CHIP_SELECT; // DataFlash
SPDR = BUFFER_1_WRITE;
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
SPDR = (char)(buffer_counter>>8); // +
while (!(SPSR & temp)); //
SPDR = (char)buffer_counter; // (. 2^8 = 256
)
while (!(SPSR & temp)); //
SPDR = flash_data; // SPI
while (!(SPSR & temp)); //
PORTB |= DF_CHIP_SELECT; // DataFlash
buffer_counter++;
if (buffer_counter > 528) // ,
{
buffer_counter = 0;
if (page_counter < 4096) //
{
PORTB &= ~DF_CHIP_SELECT; // DataFlash
SPDR = B1_TO_MM_PAGE_PROG_WITHOUT_ERASE; //
1
while (!(SPSR & temp)); //
SPDR = (char)(page_counter>>6);
while (!(SPSR & temp)); //
SPDR = (char)(page_counter<<2);
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
PORTB |= DF_CHIP_SELECT; // DataFlash
page_counter++;
}
else
{
PORTB |= 0x08; // LED
while (!(PIND & 8)); //
( 3)
}
}
}
void playback(void)
{
unsigned int page_counter = 0;
unsigned int buffer_counter = 0;
unsigned char active_buffer = 1; // = 1
unsigned char temp = 0x80;
TCCR1A = 0x21; // 8 , COM1B
TCNT1 = 0x00; // 1
TIFR = 0x04; // 1
TIMSK = 0x04; // 1
TCCR1B = 0x01; // . 1 = 1
OCR1B = 0x00; // B
// , SPI , , MSB, 3 SPI, Fcl/4
SPCR = 0x5C;
next_page_to_next_buffer (active_buffer, page_counter); // 0
1
while (!(PINB & 0x02)); // 0
1
while ((page_counter < 4095)&(!(PIND & 2))) //
( 1)
{
page_counter++; //
next_page_to_next_buffer (active_buffer, page_counter);
active_buffer_to_speaker (active_buffer);
if (active_buffer == 1) // 1
{
active_buffer++; // 2
}
else //
{
active_buffer--; // 1
}
}
TIMSK = 0x00; //
TCCR1B = 0x00; // 1
SPCR = 0x00; // SPI
}
void next_page_to_next_buffer (unsigned char active_buffer, unsigned int page_counter)
{
unsigned char temp = 0x80;
while(!(PINB & 0x02)); // ,
PORTB &= ~DF_CHIP_SELECT; // DataFlash
if (active_buffer == 1) // 1
{
SPDR = MM_PAGE_TO_B2_XFER; //
2
}
else //
{
SPDR = MM_PAGE_TO_B1_XFER; //
1
}
while (!(SPSR & temp)); //
SPDR = (char)(page_counter >> 6);
while (!(SPSR & temp)); //
SPDR = (char)(page_counter << 2);
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
PORTB |= DF_CHIP_SELECT; // DataFlash
}
void interrupt[TIMER1_OVF1_vect] out_now(void)
{
wait = 0; //
}
void active_buffer_to_speaker (unsigned char active_buffer)
{
//
unsigned int buffer_counter = 0;
unsigned char temp = 0x80;
PORTB &= ~DF_CHIP_SELECT; // DataFlash
if (active_buffer == 1) // 1
{
SPDR = BUFFER_1_READ; // 1
}
else //
{
SPDR = BUFFER_2_READ; // 2
}
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
SPDR = 0x00; // 0
while (!(SPSR & temp)); //
SPDR = 0x00; //
while (!(SPSR & temp)); //
while (buffer_counter < 528)
{
SPDR = 0xFF; //
while (!(SPSR & temp)); //
while(wait); // 1
OCR1B = SPDR; //
wait = 1; //
buffer_counter++;
}
PORTB |= DF_CHIP_SELECT; // DataFlash
}
void main(void)
{
setup();
for(;;)
{
if (!(PIND & 8)) // ( 3)
{
PORTB &= 0xF7; // LED
recording();
}
if (!(PIND & 4)) // ( 2)
{
PORTB &= 0xF7; // LED
erasing();
while (!(PIND & 4)); //
( 2)
}
if (!(PIND & 2)) // ( 1)
{
PORTB &= 0xF7; // LED
playback();
while (!(PIND & 2)); //
( 1)
}
PORTB |= 0x08; // LED
}
}
DataFlash.h
// 19.04.1999
// 8535
#include ina90.h
#pragma language=extended
// DataFlash (PB 0)
#define DF_RESET 0x01
// DataFlash / (PB 1)
#define DF_RDY_BUSY 0x02
// DataFlash (PB 2)
#define DF_WRITE_PROTECT 0x04
// DataFlash (PB 4)
#define DF_CHIP_SELECT 0x10
// 1
#define BUFFER_1 0x00
// 2
#define BUFFER_2 0x01
//
// 1
#define BUFFER_1_WRITE 0x84
// 2
#define BUFFER_2_WRITE 0x87
// 1
#define BUFFER_1_READ 0x54
// 2
#define BUFFER_2_READ 0x56
// 1
#define B1_TO_MM_PAGE_PROG_WITH_ERASE 0x83
// 2
#define B2_TO_MM_PAGE_PROG_WITH_ERASE 0x86
// 1
#define B1_TO_MM_PAGE_PROG_WITHOUT_ERASE 0x88
// 2
#define B2_TO_MM_PAGE_PROG_WITHOUT_ERASE 0x89
// 1
#define MM_PAGE_PROG_THROUGH_B1 0x82
// 2
#define MM_PAGE_PROG_THROUGH_B2 0x85
// 1
#define AUTO_PAGE_REWRITE_THROUGH_B1 0x58
// 2
#define AUTO_PAGE_REWRITE_THROUGH_B2 0x59
// 1
#define MM_PAGE_TO_B1_COMP 0x60
// 2
#define MM_PAGE_TO_B2_COMP 0x61
// 1
#define MM_PAGE_TO_B1_XFER 0x53
// 2
#define MM_PAGE_TO_B2_XFER 0x55
// DataFlash , ,
// /
#define STATUS_REGISTER 0x57
//
#define MAIN_MEMORY_PAGE_READ 0x52
// 528
#define PAGE_ERASE 0x81
// 512
#define BLOCK_ERASE 0x50
#define TRUE 0xff
#define FALSE 0x00
: , (SPI) DataFlash - () .
1. Proakis, J.G. and Manolakis, D.G. (1992)
Digital Signal Processing: Principles, Algorithms, and Applications
2. Datasheets:
Atmel AVR AT90S8535
