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1 | ingob | 1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
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3 | /*#######################################################################################*/ |
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4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
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171 | ingob | 6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
1 | ingob | 7 | // + FOR NON COMMERCIAL USE ONLY |
8 | // + www.MikroKopter.com |
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9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
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11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
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12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
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13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
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14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
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15 | // + Verkauf von Luftbildaufnahmen, usw. |
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16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
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18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
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19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
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21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
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22 | // + eindeutig als Ursprung verlinkt werden |
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23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
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25 | // + Benutzung auf eigene Gefahr |
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26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
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27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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171 | ingob | 28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
1 | ingob | 29 | // + mit unserer Zustimmung zulässig |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
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32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
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34 | // + this list of conditions and the following disclaimer. |
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35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
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36 | // + from this software without specific prior written permission. |
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37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
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38 | // + for non-commercial use (directly or indirectly) |
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39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
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40 | // + with our written permission |
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41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
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42 | // + clearly linked as origin |
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171 | ingob | 43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
1 | ingob | 44 | // |
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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55 | // + POSSIBILITY OF SUCH DAMAGE. |
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56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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57 | #include "main.h" |
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58 | |||
59 | |||
60 | //________________________________________________________________________________________________________________________________________ |
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61 | // Module name: mmc.c |
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62 | // Compiler used: avr-gcc 3.4.5 |
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63 | // Last Modifikation: 24.07.2007 |
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64 | // Version: 1.05 |
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65 | // Authors: Stephan Busker |
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66 | // Description: Source files for connecting to an sdcard using the SSC |
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67 | // |
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68 | //........................................................................................................................................ |
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69 | // Functions: u8 SDC_init(void); |
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70 | // u8 SDC_PutCommand (u8 *CMD); |
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71 | // u8 SDC_PutSector(u32 addr,u8 *Buffer); |
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72 | // u8 SDC_GetSector(u32 addr,u8 *Buffer); |
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73 | // void SDC_GetBlock(u8 *CMD,u8 *Buffer,u16 Bytes); |
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74 | // |
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75 | ////........................................................................................................................................ |
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76 | // ext. functions: extern void SSC_Init(void); |
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77 | // extern u8 SSC_GetChar (void); |
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78 | // extern void SSC_PutChar (u8); |
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79 | // extern void SSC_Enable(void); |
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80 | // extern void SSC_Disable(void); |
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81 | //........................................................................................................................................ |
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82 | // |
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83 | // URL: www.Mikro-Control.de |
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84 | // mailto: stephan.busker@mikro-control.de |
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85 | //________________________________________________________________________________________________________________________________________ |
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86 | |||
87 | |||
88 | |||
89 | |||
90 | //________________________________________________________________________________________________________________________________________ |
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91 | // Funtion: SDC_Init(void); |
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92 | // |
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93 | // Description: This function initialises the SDCard to spi-mode. |
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94 | // |
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95 | // |
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96 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
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97 | //________________________________________________________________________________________________________________________________________ |
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98 | |||
99 | u8 SDC_Init(void) |
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100 | { |
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101 | u16 Timeout = 0; |
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102 | u8 CMD[] = {0x40,0x00,0x00,0x00,0x00,0x95}; |
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103 | |||
104 | u8 b; |
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105 | |||
106 | SSC_Init(); // Initialise SSC to transmit data to the sdcard. |
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107 | SerialPutString("Init SD..."); |
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108 | // Delay_ms(10); |
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109 | |||
110 | for (b = 0;b<0x0f;b++) // sending 74Clocks brings the sdcard into spimode. |
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111 | { |
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112 | SSC_PutChar(0xff); |
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113 | } |
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114 | |||
115 | SerialPutString("reset..."); |
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116 | while(SDC_PutCommand (CMD) !=1) // Sending CMD0 (Reset) to the sdcard. |
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117 | { |
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118 | if (Timeout++ > 200) |
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119 | { |
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120 | |||
121 | return(1); |
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122 | } |
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123 | } |
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124 | SerialPutString("ok."); |
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125 | Timeout = 0; |
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126 | CMD[0] = 0x41; |
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127 | CMD[5] = 0xFF; |
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128 | while( SDC_PutCommand (CMD) !=0) // Sending CMD1 to the sdcard. |
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129 | { |
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130 | if (Timeout++ > 100) |
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131 | { |
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132 | return(2); |
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133 | } |
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134 | } |
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135 | |||
136 | SSC_Disable(); // disable sdcard. |
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137 | return(0); |
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138 | } |
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139 | |||
140 | |||
141 | |||
142 | |||
143 | //________________________________________________________________________________________________________________________________________ |
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144 | // Funtion: SDC_PutCommand(* CMD); |
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145 | // |
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146 | // Description: This function initialises the SDCard to spi-mode. |
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147 | // |
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148 | // |
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149 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
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150 | //________________________________________________________________________________________________________________________________________ |
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151 | |||
152 | u8 SDC_PutCommand (u8 *CMD) |
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153 | { |
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154 | u8 tmp = 0xff; |
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155 | u16 Timeout = 0; |
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156 | u16 a; |
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157 | SSC_ClearRxFifo(); |
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158 | SSC_Disable(); // disable chipselect |
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159 | SSC_PutChar(0xFF); // Send 8 Clocks to the sdcard while card is not selected. |
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160 | SSC_Enable(); // enable chipselect. |
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161 | |||
162 | // if (*CMD == 0x41) Delay_ms(10); // if command is CMD0 generate a short delay. |
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163 | |||
164 | for (a = 0;a<0x06;a++) // send the command sequence to the sdcard (6 bytes) |
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165 | { |
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166 | |||
167 | SSC_PutChar(*CMD++); |
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168 | } |
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169 | |||
170 | SSC_ClearRxFifo(); |
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171 | while (tmp == 0xff) // Wait for response from sdcard. |
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172 | { |
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173 | tmp = SSC_GetChar(); |
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174 | if (Timeout++ > 200) |
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175 | { |
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176 | break; // or timeout. |
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177 | } |
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178 | } |
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179 | |||
180 | return(tmp); |
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181 | } |
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182 | |||
183 | |||
184 | |||
185 | |||
186 | //________________________________________________________________________________________________________________________________________ |
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187 | // Funtion: SDC_PutSector(void); |
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188 | // |
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189 | // Description: This function writes one sector of data to the SSC |
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190 | // |
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191 | // |
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192 | // Returnvalue: none |
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193 | //________________________________________________________________________________________________________________________________________ |
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194 | |||
195 | u8 SDC_PutSector(u32 addr,u8 *Buffer) |
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196 | { |
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197 | u8 tmp; |
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198 | u8 CMD[] = {0x58,0x00,0x00,0x00,0x00,0xFF}; |
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199 | u16 a; |
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200 | addr = addr << 9; // convert sectoradress to byteadress |
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201 | |||
202 | CMD[1] = ((addr & 0xFF000000) >>24 ); |
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203 | CMD[2] = ((addr & 0x00FF0000) >>16 ); |
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204 | CMD[3] = ((addr & 0x0000FF00) >>8 ); |
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205 | |||
206 | tmp = SDC_PutCommand (CMD); // send command to sdcard. |
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207 | if (tmp != 0) |
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208 | { |
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209 | return(tmp); |
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210 | } |
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211 | SSC_ClearRxFifo(); |
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212 | for (a=0;a<100;a++) // wait until sdcard is ready |
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213 | { |
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214 | SSC_GetChar(); |
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215 | } |
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216 | |||
217 | SSC_PutChar(0xFE); // send start of header to the SSC |
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218 | |||
219 | for (a=0;a<512;a++) // transmitt one sector (normaly 512bytes) of data to the sdcard. |
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220 | { |
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221 | SSC_PutChar(*Buffer++); |
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222 | } |
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223 | |||
224 | SSC_PutChar(0xFF); // write two bytes of crc to the sdcard (not used in spi-mode) |
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225 | SSC_PutChar(0xFF); |
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226 | SSC_ClearRxFifo(); |
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227 | while (SSC_GetChar() != 0xff){}; // wait untile the sdcard is ready. |
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228 | |||
229 | SSC_Disable(); // disable sdcard. |
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230 | |||
231 | return(0); |
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232 | } |
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233 | |||
234 | |||
235 | |||
236 | //________________________________________________________________________________________________________________________________________ |
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237 | // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
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238 | // |
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239 | // Description: This function reads one sector of data from the SSC |
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240 | // |
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241 | // |
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242 | // Returnvalue: none |
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243 | //________________________________________________________________________________________________________________________________________ |
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244 | |||
245 | u8 SDC_GetSector(u32 addr,u8 *Buffer) |
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246 | { |
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247 | u8 CMD[] = {0x51,0x00,0x00,0x00,0x00,0xFF}; |
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248 | |||
249 | addr = addr << 9; // convert sectoradress to byteadress. |
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250 | |||
251 | CMD[1] = ((addr & 0xFF000000) >>24 ); |
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252 | CMD[2] = ((addr & 0x00FF0000) >>16 ); |
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253 | CMD[3] = ((addr & 0x0000FF00) >>8 ); |
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254 | |||
255 | // sprintf(text,"\n\rGetSector: (%lu)", (u32)addr ); SerialPutString(text); |
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256 | |||
257 | SDC_GetBlock(CMD,Buffer,512); // read specified sector from sdcard. |
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258 | |||
259 | return(0); |
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260 | } |
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261 | |||
262 | |||
263 | |||
264 | //________________________________________________________________________________________________________________________________________ |
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265 | // Funtion: SDC_GetBlock(void); |
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266 | // |
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267 | // Description: This function reads one block of data of int bytes from the SSC. |
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268 | // |
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269 | // |
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270 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
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271 | //________________________________________________________________________________________________________________________________________ |
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272 | |||
273 | void SDC_GetBlock(u8 *CMD,u8 *Buffer,u16 Bytes) |
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274 | { |
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275 | if (SDC_PutCommand (CMD) != 0) // Send command to the sdcard. |
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276 | { |
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277 | return; |
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278 | } |
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279 | SSC_ClearRxFifo(); |
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280 | // SerialPutString("\n\rWait."); |
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281 | while (SSC_GetChar() != 0xfe){}; // wait until the sdcard is ready to transmitt data. |
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282 | // SerialPutString("Ok."); |
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283 | u16 a; |
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284 | for (a=0;a<Bytes;a++) // read the block from the SSC (normaly 512Bytes) |
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285 | { |
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286 | *Buffer++ = SSC_GetChar(); |
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287 | } |
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288 | |||
289 | SSC_GetChar(); // Read two bytes CRC- checksum (not used in spi-mode) |
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290 | SSC_GetChar(); |
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291 | SSC_Disable(); // disable sdcard. |
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292 | } |
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293 | |||
294 | |||
295 |