https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/ Форум о микроконтроллерах и электронике: обсуждение схем и проектов, помощь начинающим ru-RU Thu, 23 Apr 2026 00:23:49 +0000 wpForo 60 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-1393 Sun, 13 Nov 2011 11:22:37 +0000 Программирование микроконтроллеров sandro https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-1393 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-1329 Sun, 16 Oct 2011 18:17:41 +0000 Программирование микроконтроллеров sandro https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-1329 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-754 Mon, 12 Apr 2010 16:23:47 +0000 Как я понял, ответственность за Write-Protection ложится целиком на устройство чтения. Существует ли возможность программного обхода этого ограничения (может быть, к примеру, возможность программирования каких-либо регистров Card-Reader'а) для абстрактного устройства чтения и для вот такого в частности: usb 1-3: New USB device found, idVendor=058f, idProduct=6366 usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-3: Product: Mass Storage Device usb 1-3: Manufacturer: Generic usb 1-3: SerialNumber: 058F63666433 scsi13 : SCSI emulation for USB Mass Storage devices scsi 13:0:0:0: Direct-Access Multiple Card Reader 1.00 PQ: 0 ANSI: 0 Меня это интересует с точки зрения - надежно ли использование защищенной от записи Flash'ки на компьютере с неизвестным ПО, например вирусами.]]> Программирование микроконтроллеров TeXHaPb https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-754 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-369 Tue, 05 May 2009 23:52:16 +0000

а вот схема включения при питании 5 вольт:

]]> Программирование микроконтроллеров Radioded https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-369 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-368 Tue, 05 May 2009 11:56:23 +0000 Программирование микроконтроллеров mas_nk https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-368 https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-28 Sat, 28 Mar 2009 17:12:37 +0000 Вот сам исходник: /* MMC/SD application - SPI mode ATMega32 LCD 16*2 */ //_____ INCLUDES _________________________________________ #include <avr/io.h> #define F_CPU 1000000 #include <util/delay.h> #include <avr/interrupt.h> #include <string.h> #include <stdio.h> #include <stdlib.h> #include <lcd.h> #define MMC_CS_1 PORTB |=0b00001000 #define MMC_CS_0 PORTB &=0b11110111 #define OK 0x01 #define FAIL 0x02 //#define cbi(reg, bit) (reg&=~(1<<bit)) //#define sbi(reg, bit) (reg|= (1<<bit)) /** MMC/SD card SPI mode commands **/ /* #define CMD0 0x40 // software reset #define CMD1 0x41 // brings card out of idle state #define CMD9 0x49 // ask card to send card speficic data (CSD) #define CMD10 0x4A // ask card to send card identification (CID) #define CMD12 0x4C // stop transmission on multiple block read #define CMD13 0x4D // ask the card to send it's status register #define CMD16 0x50 // sets the block length used by the memory card #define CMD17 0x51 // read single block #define CMD18 0x52 // read multiple block #define CMD24 0x58 // writes a single block #define CMD25 0x59 // writes multiple blocks #define CMD27 0x5B // change the bits in CSD #define CMD28 0x5C // sets the write protection bit #define CMD29 0x5D // clears the write protection bit #define CMD30 0x5E // checks the write protection bit #define CMD32 0x60 // Sets the address of the first sector of the erase group #define CMD33 0x61 // Sets the address of the last sector of the erase group #define CMD34 0x62 // removes a sector from the selected group #define CMD35 0x63 // Sets the address of the first group #define CMD36 0x64 // Sets the address of the last erase group #define CMD37 0x65 // removes a group from the selected section #define CMD38 0x66 // erase all selected groups #define CMD42 0x6A // locks a block #define CMD58 0x7A // reads the OCR register #define CMD59 0x7B // turns CRC off */ char buffer; unsigned int i; char mmc_block; char number; char hello[]=" Hello!"; char cmd0_ok[] = "CMD0 OK"; char cmd0_fail[] = "CMD0 FAIL!!!"; char cmd1_ok[] = "CMD1 OK"; char cmd1_fail[] = "CMD1 FAIL!!!"; char mmc_init_ok[] = "MMC init OK"; char mmc_error[]= "Error"; char mmc_write_error[] = "Write Error"; char mmc_read_error[] = "Read Error"; unsigned char temp=0; unsigned int i=0; ISR(INT0_vect){ GICR &= ~(1<<INT0); _delay_ms(15); if ((PIND & 0b00000100) == 0){ // OK PORTD ^=(1<<7); // toggle Led } _delay_ms(30); GICR |= (1<<INT0); } void spi_init(void){ DDRB = 0b10111111; // all outputs, MISO - input SPCR = (0<<SPIE)|(1<<SPE)|(1<<MSTR)|(0<<CPOL)|(0<<CPHA)|(0<<SPR1)|(1<<SPR0); // master OSC/8 } unsigned char spi_transmit(unsigned char data){ SPDR = data; while(!(SPSR & (1<<SPIF))); // wait until transmitting return SPDR; } unsigned char mmc_command( unsigned char befF, unsigned int AdrH, unsigned int AdrL, unsigned char befH){ spi_transmit(0xFF); spi_transmit(befF); spi_transmit((AdrH & 0xFF00)>>8); spi_transmit(AdrH & 0x00FF); spi_transmit((AdrL & 0xFF00)>>8); spi_transmit(AdrL & 0x00FF); spi_transmit(befH); spi_transmit(0xFF); return spi_transmit(0xFF); } unsigned char mmc_init(void){ MMC_CS_1; _delay_ms(5); for(i=0; i<10; i++) { temp = spi_transmit(0xFF); _delay_us(10); } MMC_CS_0; _delay_ms(5); if (mmc_command(0x40, 0, 0, 0x95) == 0x01){ // CMD0 clearlcd(); _delay_ms(10); showstr(cmd0_ok); } else{ clearlcd(); _delay_ms(10); showstr(cmd0_fail); return 0; } while(mmc_command(0x41,0,0,0xFF) != 0x00) _delay_ms(10); // CMD1 clearlcd(); _delay_ms(10); showstr(cmd1_ok); //if (Command(0x50,0,512,0xFF) !=0) showstr(mmc_error); // CMD16 - set block length return OK; } void mmc_write(void){ if (mmc_command(0x58,0,0,0xFF) !=0){ // CMD24 - write a single block clearlcd(); showstr(mmc_write_error); } spi_transmit(0xFF); spi_transmit(0xFF); spi_transmit(0xFE); for (i=0; i<512; i++) spi_transmit(i & 0xFF); spi_transmit(0xFF); spi_transmit(0xFF); temp = spi_transmit(0xFF); if ( (temp & 0b00011111) != 0b00000101){ clearlcd(); showstr(mmc_write_error); } while(spi_transmit(0xFF) != 0xFF); } void mmc_read(void){ if ((mmc_command(0x51,0,0,0xFF)) != 0){ clearlcd(); showstr(mmc_read_error); } while (spi_transmit(0xFF) != 0xFE); for(i=0; i < 512; i++) mmc_block = spi_transmit(0xFF); // Передача байта данных spi_transmit(0xFF); // CRC16 spi_transmit(0xFF); } void delay_ms(unsigned int t){ unsigned int i; for (i=0; i<t; i++) _delay_ms(1); } int main (void) { lcdinit(); spi_init(); DDRD = 0b10000000; // inputs and PD7 - output PORTD |=(1<<2); PORTB = 0b00001000; MCUCR = 0b00001010; // Falling edge GICR |= (1<<INT0); clearlcd(); showstr(hello); delay_ms(400); if (mmc_init() == OK){ _delay_ms(100); clearlcd(); _delay_ms(10); showstr(mmc_init_ok); } SPCR = (0<<SPIE)|(1<<SPE)|(1<<MSTR)|(0<<CPOL)|(0<<CPHA)|(0<<SPR1)|(0<<SPR0); // CK/2 SPSR = (1<<SPI2X); clearlcd(); delay_ms(600); mmc_write(); delay_ms(100); mmc_read(); delay_ms(600); for (i=0; i<512; i++){ clearlcd(); _delay_ms(10); lcddata(mmc_block); delay_ms(300); } while(1); }

mmc.rar

]]> Программирование микроконтроллеров Radioded https://radioded.ru/forum/programmirovanie/%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0-%d1%81-mmc-sd-%d0%ba%d0%b0%d1%80%d1%82%d0%be%d0%b9-%d0%bf%d0%b0%d0%bc%d1%8f%d1%82%d0%b8/#post-28