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| /*#######################################################################################*/ |
| /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
| /*#######################################################################################*/ |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Copyright (c) 2008 Ingo Busker, Holger Buss |
| // + Nur für den privaten Gebrauch |
| // + FOR NON COMMERCIAL USE ONLY |
| // + www.MikroKopter.com |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
| // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
| // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
| // + bzgl. der Nutzungsbedingungen aufzunehmen. |
| // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
| // + Verkauf von Luftbildaufnahmen, usw. |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
| // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
| // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
| // + eindeutig als Ursprung verlinkt werden |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
| // + Benutzung auf eigene Gefahr |
| // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
| // + mit unserer Zustimmung zulässig |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
| // + this list of conditions and the following disclaimer. |
| // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
| // + from this software without specific prior written permission. |
| // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
| // + for non-commercial use (directly or indirectly) |
| // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
| // + with our written permission |
| // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
| // + clearly linked as origin |
| // + * PORTING this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
| // |
| // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| // + POSSIBILITY OF SUCH DAMAGE. |
| // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| #include "main.h" |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Module name: mmc.c |
| // Compiler used: avr-gcc 3.4.5 |
| // Last Modifikation: 24.07.2007 |
| // Version: 1.05 |
| // Authors: Stephan Busker |
| // Description: Source files for connecting to an sdcard using the SSC |
| // |
| //........................................................................................................................................ |
| // Functions: u8 SDC_init(void); |
| // u8 SDC_PutCommand (u8 *CMD); |
| // u8 SDC_PutSector(u32 addr,u8 *Buffer); |
| // u8 SDC_GetSector(u32 addr,u8 *Buffer); |
| // void SDC_GetBlock(u8 *CMD,u8 *Buffer,u16 Bytes); |
| // |
| ////........................................................................................................................................ |
| // ext. functions: extern void SSC_Init(void); |
| // extern u8 SSC_GetChar (void); |
| // extern void SSC_PutChar (u8); |
| // extern void SSC_Enable(void); |
| // extern void SSC_Disable(void); |
| //........................................................................................................................................ |
| // |
| // URL: www.Mikro-Control.de |
| // mailto: stephan.busker@mikro-control.de |
| //________________________________________________________________________________________________________________________________________ |
| |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Funtion: SDC_Init(void); |
| // |
| // Description: This function initialises the SDCard to spi-mode. |
| // |
| // |
| // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
| //________________________________________________________________________________________________________________________________________ |
| |
| u8 SDC_Init(void) |
| { |
| u16 Timeout = 0; |
| u8 CMD[] = {0x40,0x00,0x00,0x00,0x00,0x95}; |
| |
| u8 b; |
| |
| SSC_Init(); // Initialise SSC to transmit data to the sdcard. |
| SerialPutString("Init SD..."); |
| // Delay_ms(10); |
| |
| for (b = 0;b<0x0f;b++) // sending 74Clocks brings the sdcard into spimode. |
| { |
| SSC_PutChar(0xff); |
| } |
| |
| SerialPutString("reset..."); |
| while(SDC_PutCommand (CMD) !=1) // Sending CMD0 (Reset) to the sdcard. |
| { |
| if (Timeout++ > 200) |
| { |
| |
| return(1); |
| } |
| } |
| SerialPutString("ok."); |
| Timeout = 0; |
| CMD[0] = 0x41; |
| CMD[5] = 0xFF; |
| while( SDC_PutCommand (CMD) !=0) // Sending CMD1 to the sdcard. |
| { |
| if (Timeout++ > 100) |
| { |
| return(2); |
| } |
| } |
| |
| SSC_Disable(); // disable sdcard. |
| return(0); |
| } |
| |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Funtion: SDC_PutCommand(* CMD); |
| // |
| // Description: This function initialises the SDCard to spi-mode. |
| // |
| // |
| // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
| //________________________________________________________________________________________________________________________________________ |
| |
| u8 SDC_PutCommand (u8 *CMD) |
| { |
| u8 tmp = 0xff; |
| u16 Timeout = 0; |
| u16 a; |
| SSC_ClearRxFifo(); |
| SSC_Disable(); // disable chipselect |
| SSC_PutChar(0xFF); // Send 8 Clocks to the sdcard while card is not selected. |
| SSC_Enable(); // enable chipselect. |
| |
| // if (*CMD == 0x41) Delay_ms(10); // if command is CMD0 generate a short delay. |
| |
| for (a = 0;a<0x06;a++) // send the command sequence to the sdcard (6 bytes) |
| { |
| |
| SSC_PutChar(*CMD++); |
| } |
| |
| SSC_ClearRxFifo(); |
| while (tmp == 0xff) // Wait for response from sdcard. |
| { |
| tmp = SSC_GetChar(); |
| if (Timeout++ > 200) |
| { |
| break; // or timeout. |
| } |
| } |
| |
| return(tmp); |
| } |
| |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Funtion: SDC_PutSector(void); |
| // |
| // Description: This function writes one sector of data to the SSC |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| u8 SDC_PutSector(u32 addr,u8 *Buffer) |
| { |
| u8 tmp; |
| u8 CMD[] = {0x58,0x00,0x00,0x00,0x00,0xFF}; |
| u16 a; |
| addr = addr << 9; // convert sectoradress to byteadress |
| |
| CMD[1] = ((addr & 0xFF000000) >>24 ); |
| CMD[2] = ((addr & 0x00FF0000) >>16 ); |
| CMD[3] = ((addr & 0x0000FF00) >>8 ); |
| |
| tmp = SDC_PutCommand (CMD); // send command to sdcard. |
| if (tmp != 0) |
| { |
| return(tmp); |
| } |
| SSC_ClearRxFifo(); |
| for (a=0;a<100;a++) // wait until sdcard is ready |
| { |
| SSC_GetChar(); |
| } |
| |
| SSC_PutChar(0xFE); // send start of header to the SSC |
| |
| for (a=0;a<512;a++) // transmitt one sector (normaly 512bytes) of data to the sdcard. |
| { |
| SSC_PutChar(*Buffer++); |
| } |
| |
| SSC_PutChar(0xFF); // write two bytes of crc to the sdcard (not used in spi-mode) |
| SSC_PutChar(0xFF); |
| SSC_ClearRxFifo(); |
| while (SSC_GetChar() != 0xff){}; // wait untile the sdcard is ready. |
| |
| SSC_Disable(); // disable sdcard. |
| |
| return(0); |
| } |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
| // |
| // Description: This function reads one sector of data from the SSC |
| // |
| // |
| // Returnvalue: none |
| //________________________________________________________________________________________________________________________________________ |
| |
| u8 SDC_GetSector(u32 addr,u8 *Buffer) |
| { |
| u8 CMD[] = {0x51,0x00,0x00,0x00,0x00,0xFF}; |
| |
| addr = addr << 9; // convert sectoradress to byteadress. |
| |
| CMD[1] = ((addr & 0xFF000000) >>24 ); |
| CMD[2] = ((addr & 0x00FF0000) >>16 ); |
| CMD[3] = ((addr & 0x0000FF00) >>8 ); |
| |
| // sprintf(text,"\n\rGetSector: (%lu)", (u32)addr ); SerialPutString(text); |
| |
| SDC_GetBlock(CMD,Buffer,512); // read specified sector from sdcard. |
| |
| return(0); |
| } |
| |
| |
| |
| //________________________________________________________________________________________________________________________________________ |
| // Funtion: SDC_GetBlock(void); |
| // |
| // Description: This function reads one block of data of int bytes from the SSC. |
| // |
| // |
| // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
| //________________________________________________________________________________________________________________________________________ |
| |
| void SDC_GetBlock(u8 *CMD,u8 *Buffer,u16 Bytes) |
| { |
| if (SDC_PutCommand (CMD) != 0) // Send command to the sdcard. |
| { |
| return; |
| } |
| SSC_ClearRxFifo(); |
| // SerialPutString("\n\rWait."); |
| while (SSC_GetChar() != 0xfe){}; // wait until the sdcard is ready to transmitt data. |
| // SerialPutString("Ok."); |
| u16 a; |
| for (a=0;a<Bytes;a++) // read the block from the SSC (normaly 512Bytes) |
| { |
| *Buffer++ = SSC_GetChar(); |
| } |
| |
| SSC_GetChar(); // Read two bytes CRC- checksum (not used in spi-mode) |
| SSC_GetChar(); |
| SSC_Disable(); // disable sdcard. |
| } |
| |
| |
| |