Chris Styles
/
m3pi_AVRprogrammer
AVR910.cpp@0:20fc0ecfb510, 2010-11-01 (annotated)
- Committer:
- chris
- Date:
- Mon Nov 01 17:11:45 2010 +0000
- Revision:
- 0:20fc0ecfb510
Initial
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
chris | 0:20fc0ecfb510 | 1 | //****************************************************************************/ |
chris | 0:20fc0ecfb510 | 2 | // Description: |
chris | 0:20fc0ecfb510 | 3 | // |
chris | 0:20fc0ecfb510 | 4 | // Program AVR chips with the AVR910 ISP (in-system programming) protocol, |
chris | 0:20fc0ecfb510 | 5 | // using an mbed. |
chris | 0:20fc0ecfb510 | 6 | // |
chris | 0:20fc0ecfb510 | 7 | // AVR Application Note: |
chris | 0:20fc0ecfb510 | 8 | // |
chris | 0:20fc0ecfb510 | 9 | // http://www.atmel.com/dyn/resources/prod_documents/doc0943.pdf |
chris | 0:20fc0ecfb510 | 10 | //****************************************************************************/ |
chris | 0:20fc0ecfb510 | 11 | |
chris | 0:20fc0ecfb510 | 12 | //****************************************************************************/ |
chris | 0:20fc0ecfb510 | 13 | // Includes |
chris | 0:20fc0ecfb510 | 14 | //****************************************************************************/ |
chris | 0:20fc0ecfb510 | 15 | #include "AVR910.h" |
chris | 0:20fc0ecfb510 | 16 | |
chris | 0:20fc0ecfb510 | 17 | Serial debug(USBTX, USBRX); |
chris | 0:20fc0ecfb510 | 18 | |
chris | 0:20fc0ecfb510 | 19 | AVR910::AVR910(PinName mosi, PinName miso, PinName sclk, PinName nReset) { |
chris | 0:20fc0ecfb510 | 20 | |
chris | 0:20fc0ecfb510 | 21 | spi_ = new SPI(mosi, miso, sclk); |
chris | 0:20fc0ecfb510 | 22 | spi_->frequency(32000); |
chris | 0:20fc0ecfb510 | 23 | spi_->format(8, 1); |
chris | 0:20fc0ecfb510 | 24 | nReset_ = new DigitalOut(nReset); |
chris | 0:20fc0ecfb510 | 25 | |
chris | 0:20fc0ecfb510 | 26 | } |
chris | 0:20fc0ecfb510 | 27 | |
chris | 0:20fc0ecfb510 | 28 | int AVR910::program(FILE* binary) { |
chris | 0:20fc0ecfb510 | 29 | |
chris | 0:20fc0ecfb510 | 30 | int response = 0; |
chris | 0:20fc0ecfb510 | 31 | |
chris | 0:20fc0ecfb510 | 32 | debug.printf("mbed AVR910 Programmer starting\n"); |
chris | 0:20fc0ecfb510 | 33 | |
chris | 0:20fc0ecfb510 | 34 | //Enter serial programming mode by pulling reset line low. |
chris | 0:20fc0ecfb510 | 35 | *nReset_ = 0; |
chris | 0:20fc0ecfb510 | 36 | |
chris | 0:20fc0ecfb510 | 37 | //Wait 20ms before issuing first command. |
chris | 0:20fc0ecfb510 | 38 | wait_ms(20); |
chris | 0:20fc0ecfb510 | 39 | |
chris | 0:20fc0ecfb510 | 40 | //Issue a programming enable command. |
chris | 0:20fc0ecfb510 | 41 | response = enableProgramming(); |
chris | 0:20fc0ecfb510 | 42 | |
chris | 0:20fc0ecfb510 | 43 | if (response < 0) { |
chris | 0:20fc0ecfb510 | 44 | debug.printf("Enable programming command not successful\n"); |
chris | 0:20fc0ecfb510 | 45 | } else { |
chris | 0:20fc0ecfb510 | 46 | debug.printf("Enable programming command successful\n"); |
chris | 0:20fc0ecfb510 | 47 | } |
chris | 0:20fc0ecfb510 | 48 | |
chris | 0:20fc0ecfb510 | 49 | //Read vendor code, part family and part number. |
chris | 0:20fc0ecfb510 | 50 | response = readVendorCode(); |
chris | 0:20fc0ecfb510 | 51 | |
chris | 0:20fc0ecfb510 | 52 | if (response == ATMEL_VENDOR_CODE) { |
chris | 0:20fc0ecfb510 | 53 | debug.printf("Microcontroller is an Atmel [0x%02x]\n", response); |
chris | 0:20fc0ecfb510 | 54 | } else if (response == DEVICE_LOCKED) { |
chris | 0:20fc0ecfb510 | 55 | debug.printf("Device is locked\n"); |
chris | 0:20fc0ecfb510 | 56 | } else { |
chris | 0:20fc0ecfb510 | 57 | debug.printf("Microcontroller is not an Atmel\n"); |
chris | 0:20fc0ecfb510 | 58 | } |
chris | 0:20fc0ecfb510 | 59 | |
chris | 0:20fc0ecfb510 | 60 | response = readPartFamilyAndFlashSize(); |
chris | 0:20fc0ecfb510 | 61 | |
chris | 0:20fc0ecfb510 | 62 | if (response == 0xFF) { |
chris | 0:20fc0ecfb510 | 63 | debug.printf("Device code erased or target missing\n"); |
chris | 0:20fc0ecfb510 | 64 | } else if (response == 0x01) { |
chris | 0:20fc0ecfb510 | 65 | debug.printf("Device locked\n"); |
chris | 0:20fc0ecfb510 | 66 | } else { |
chris | 0:20fc0ecfb510 | 67 | debug.printf("Part family and flash size code is: 0x%02x\n", response); |
chris | 0:20fc0ecfb510 | 68 | } |
chris | 0:20fc0ecfb510 | 69 | |
chris | 0:20fc0ecfb510 | 70 | response = readPartNumber(); |
chris | 0:20fc0ecfb510 | 71 | |
chris | 0:20fc0ecfb510 | 72 | if (response == 0xFF) { |
chris | 0:20fc0ecfb510 | 73 | debug.printf("Device code erased or target missing\n"); |
chris | 0:20fc0ecfb510 | 74 | } else if (response == 0x02) { |
chris | 0:20fc0ecfb510 | 75 | debug.printf("Device locked\n"); |
chris | 0:20fc0ecfb510 | 76 | } else { |
chris | 0:20fc0ecfb510 | 77 | debug.printf("Part number code is: 0x%02x\n", response); |
chris | 0:20fc0ecfb510 | 78 | } |
chris | 0:20fc0ecfb510 | 79 | |
chris | 0:20fc0ecfb510 | 80 | //Clear memory contents. |
chris | 0:20fc0ecfb510 | 81 | chipErase(); |
chris | 0:20fc0ecfb510 | 82 | |
chris | 0:20fc0ecfb510 | 83 | char pageOffset = 0; |
chris | 0:20fc0ecfb510 | 84 | int pageNumber = 0; |
chris | 0:20fc0ecfb510 | 85 | int c = 0; |
chris | 0:20fc0ecfb510 | 86 | int highLow = 0; |
chris | 0:20fc0ecfb510 | 87 | |
chris | 0:20fc0ecfb510 | 88 | while ((c = getc(binary)) != EOF) { |
chris | 0:20fc0ecfb510 | 89 | |
chris | 0:20fc0ecfb510 | 90 | //Page is fully loaded, time to write it to flash. |
chris | 0:20fc0ecfb510 | 91 | if (pageOffset == (PAGE_SIZE)) { |
chris | 0:20fc0ecfb510 | 92 | writeFlashMemoryPage(pageNumber); |
chris | 0:20fc0ecfb510 | 93 | debug.printf("Page %i written\n", pageNumber); |
chris | 0:20fc0ecfb510 | 94 | pageNumber++; |
chris | 0:20fc0ecfb510 | 95 | pageOffset = 0; |
chris | 0:20fc0ecfb510 | 96 | } |
chris | 0:20fc0ecfb510 | 97 | |
chris | 0:20fc0ecfb510 | 98 | //Write low byte. |
chris | 0:20fc0ecfb510 | 99 | if (highLow == 0) { |
chris | 0:20fc0ecfb510 | 100 | loadMemoryPage(WRITE_LOW_BYTE, pageOffset, c); |
chris | 0:20fc0ecfb510 | 101 | highLow = 1; |
chris | 0:20fc0ecfb510 | 102 | } |
chris | 0:20fc0ecfb510 | 103 | //Write high byte. |
chris | 0:20fc0ecfb510 | 104 | else { |
chris | 0:20fc0ecfb510 | 105 | loadMemoryPage(WRITE_HIGH_BYTE, pageOffset, c); |
chris | 0:20fc0ecfb510 | 106 | highLow = 0; |
chris | 0:20fc0ecfb510 | 107 | pageOffset++; |
chris | 0:20fc0ecfb510 | 108 | } |
chris | 0:20fc0ecfb510 | 109 | |
chris | 0:20fc0ecfb510 | 110 | } |
chris | 0:20fc0ecfb510 | 111 | |
chris | 0:20fc0ecfb510 | 112 | //We might have partially filled up a page. |
chris | 0:20fc0ecfb510 | 113 | writeFlashMemoryPage(pageNumber); |
chris | 0:20fc0ecfb510 | 114 | |
chris | 0:20fc0ecfb510 | 115 | int success = -1; |
chris | 0:20fc0ecfb510 | 116 | success = checkMemory(pageNumber, binary); |
chris | 0:20fc0ecfb510 | 117 | |
chris | 0:20fc0ecfb510 | 118 | //Leave serial programming mode by pulling reset line high. |
chris | 0:20fc0ecfb510 | 119 | *nReset_ = 1; |
chris | 0:20fc0ecfb510 | 120 | |
chris | 0:20fc0ecfb510 | 121 | return success; |
chris | 0:20fc0ecfb510 | 122 | |
chris | 0:20fc0ecfb510 | 123 | } |
chris | 0:20fc0ecfb510 | 124 | |
chris | 0:20fc0ecfb510 | 125 | void AVR910::setFrequency(int frequency){ |
chris | 0:20fc0ecfb510 | 126 | |
chris | 0:20fc0ecfb510 | 127 | spi_->frequency(frequency); |
chris | 0:20fc0ecfb510 | 128 | |
chris | 0:20fc0ecfb510 | 129 | } |
chris | 0:20fc0ecfb510 | 130 | |
chris | 0:20fc0ecfb510 | 131 | int AVR910::enableProgramming(void) { |
chris | 0:20fc0ecfb510 | 132 | |
chris | 0:20fc0ecfb510 | 133 | int response = 0; |
chris | 0:20fc0ecfb510 | 134 | int error = 0; |
chris | 0:20fc0ecfb510 | 135 | |
chris | 0:20fc0ecfb510 | 136 | //Programming Enable Command: 0xAC, 0x53, 0x00, 0x00 |
chris | 0:20fc0ecfb510 | 137 | //Byte two echo'd back in byte three. |
chris | 0:20fc0ecfb510 | 138 | spi_->write(0xAC); |
chris | 0:20fc0ecfb510 | 139 | |
chris | 0:20fc0ecfb510 | 140 | spi_->write(0x53); |
chris | 0:20fc0ecfb510 | 141 | |
chris | 0:20fc0ecfb510 | 142 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 143 | |
chris | 0:20fc0ecfb510 | 144 | if (response == 0x53) { |
chris | 0:20fc0ecfb510 | 145 | error = 0; |
chris | 0:20fc0ecfb510 | 146 | } else { |
chris | 0:20fc0ecfb510 | 147 | error = -1; |
chris | 0:20fc0ecfb510 | 148 | } |
chris | 0:20fc0ecfb510 | 149 | |
chris | 0:20fc0ecfb510 | 150 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 151 | |
chris | 0:20fc0ecfb510 | 152 | return error; |
chris | 0:20fc0ecfb510 | 153 | |
chris | 0:20fc0ecfb510 | 154 | } |
chris | 0:20fc0ecfb510 | 155 | |
chris | 0:20fc0ecfb510 | 156 | void AVR910::poll(void) { |
chris | 0:20fc0ecfb510 | 157 | |
chris | 0:20fc0ecfb510 | 158 | int response = 0; |
chris | 0:20fc0ecfb510 | 159 | |
chris | 0:20fc0ecfb510 | 160 | do { |
chris | 0:20fc0ecfb510 | 161 | spi_->write(0xF0); |
chris | 0:20fc0ecfb510 | 162 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 163 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 164 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 165 | } while ((response & 0x01) != 0); |
chris | 0:20fc0ecfb510 | 166 | |
chris | 0:20fc0ecfb510 | 167 | } |
chris | 0:20fc0ecfb510 | 168 | |
chris | 0:20fc0ecfb510 | 169 | int AVR910::readVendorCode(void) { |
chris | 0:20fc0ecfb510 | 170 | |
chris | 0:20fc0ecfb510 | 171 | int response = 0; |
chris | 0:20fc0ecfb510 | 172 | |
chris | 0:20fc0ecfb510 | 173 | //Issue read signature byte command. |
chris | 0:20fc0ecfb510 | 174 | //Address 0x00 is vendor code. |
chris | 0:20fc0ecfb510 | 175 | spi_->write(0x30); |
chris | 0:20fc0ecfb510 | 176 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 177 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 178 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 179 | |
chris | 0:20fc0ecfb510 | 180 | return response; |
chris | 0:20fc0ecfb510 | 181 | |
chris | 0:20fc0ecfb510 | 182 | } |
chris | 0:20fc0ecfb510 | 183 | |
chris | 0:20fc0ecfb510 | 184 | int AVR910::readPartFamilyAndFlashSize(void) { |
chris | 0:20fc0ecfb510 | 185 | |
chris | 0:20fc0ecfb510 | 186 | int response = 0; |
chris | 0:20fc0ecfb510 | 187 | |
chris | 0:20fc0ecfb510 | 188 | //Issue read signature byte command. |
chris | 0:20fc0ecfb510 | 189 | //Address 0x01 is part family and flash size code. |
chris | 0:20fc0ecfb510 | 190 | spi_->write(0x30); |
chris | 0:20fc0ecfb510 | 191 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 192 | spi_->write(0x01); |
chris | 0:20fc0ecfb510 | 193 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 194 | |
chris | 0:20fc0ecfb510 | 195 | return response; |
chris | 0:20fc0ecfb510 | 196 | |
chris | 0:20fc0ecfb510 | 197 | } |
chris | 0:20fc0ecfb510 | 198 | |
chris | 0:20fc0ecfb510 | 199 | int AVR910::readPartNumber(void) { |
chris | 0:20fc0ecfb510 | 200 | |
chris | 0:20fc0ecfb510 | 201 | int response = 0; |
chris | 0:20fc0ecfb510 | 202 | |
chris | 0:20fc0ecfb510 | 203 | //Issue read signature byte command. |
chris | 0:20fc0ecfb510 | 204 | //Address 0x02 is part number code. |
chris | 0:20fc0ecfb510 | 205 | spi_->write(0x30); |
chris | 0:20fc0ecfb510 | 206 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 207 | spi_->write(0x02); |
chris | 0:20fc0ecfb510 | 208 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 209 | |
chris | 0:20fc0ecfb510 | 210 | return response; |
chris | 0:20fc0ecfb510 | 211 | |
chris | 0:20fc0ecfb510 | 212 | } |
chris | 0:20fc0ecfb510 | 213 | |
chris | 0:20fc0ecfb510 | 214 | void AVR910::chipErase(void) { |
chris | 0:20fc0ecfb510 | 215 | |
chris | 0:20fc0ecfb510 | 216 | //Issue chip erase command. |
chris | 0:20fc0ecfb510 | 217 | spi_->write(0xAC); |
chris | 0:20fc0ecfb510 | 218 | spi_->write(0x80); |
chris | 0:20fc0ecfb510 | 219 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 220 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 221 | |
chris | 0:20fc0ecfb510 | 222 | poll(); |
chris | 0:20fc0ecfb510 | 223 | |
chris | 0:20fc0ecfb510 | 224 | //Temporarily release reset line. |
chris | 0:20fc0ecfb510 | 225 | *nReset_ = 1; |
chris | 0:20fc0ecfb510 | 226 | *nReset_ = 0; |
chris | 0:20fc0ecfb510 | 227 | |
chris | 0:20fc0ecfb510 | 228 | } |
chris | 0:20fc0ecfb510 | 229 | |
chris | 0:20fc0ecfb510 | 230 | void AVR910::loadMemoryPage(int highLow, char address, char data) { |
chris | 0:20fc0ecfb510 | 231 | |
chris | 0:20fc0ecfb510 | 232 | spi_->write(highLow); |
chris | 0:20fc0ecfb510 | 233 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 234 | spi_->write(address & 0x3F); |
chris | 0:20fc0ecfb510 | 235 | spi_->write(data); |
chris | 0:20fc0ecfb510 | 236 | |
chris | 0:20fc0ecfb510 | 237 | poll(); |
chris | 0:20fc0ecfb510 | 238 | |
chris | 0:20fc0ecfb510 | 239 | } |
chris | 0:20fc0ecfb510 | 240 | |
chris | 0:20fc0ecfb510 | 241 | void AVR910::writeFlashMemoryPage(char pageNumber) { |
chris | 0:20fc0ecfb510 | 242 | |
chris | 0:20fc0ecfb510 | 243 | spi_->write(0x4C); |
chris | 0:20fc0ecfb510 | 244 | spi_->write((pageNumber >> 2) & 0x3F); |
chris | 0:20fc0ecfb510 | 245 | spi_->write((pageNumber & 0x03) << 6); |
chris | 0:20fc0ecfb510 | 246 | spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 247 | |
chris | 0:20fc0ecfb510 | 248 | poll(); |
chris | 0:20fc0ecfb510 | 249 | |
chris | 0:20fc0ecfb510 | 250 | } |
chris | 0:20fc0ecfb510 | 251 | |
chris | 0:20fc0ecfb510 | 252 | char AVR910::readProgramMemory(int highLow, char pageNumber, char pageOffset) { |
chris | 0:20fc0ecfb510 | 253 | |
chris | 0:20fc0ecfb510 | 254 | int response = 0; |
chris | 0:20fc0ecfb510 | 255 | |
chris | 0:20fc0ecfb510 | 256 | spi_->write(highLow); |
chris | 0:20fc0ecfb510 | 257 | spi_->write((pageNumber >> 2) & 0x3F); |
chris | 0:20fc0ecfb510 | 258 | spi_->write(((pageNumber & 0x03) << 6) | (pageOffset & 0x3F)); |
chris | 0:20fc0ecfb510 | 259 | response = spi_->write(0x00); |
chris | 0:20fc0ecfb510 | 260 | |
chris | 0:20fc0ecfb510 | 261 | poll(); |
chris | 0:20fc0ecfb510 | 262 | |
chris | 0:20fc0ecfb510 | 263 | return response; |
chris | 0:20fc0ecfb510 | 264 | |
chris | 0:20fc0ecfb510 | 265 | } |
chris | 0:20fc0ecfb510 | 266 | |
chris | 0:20fc0ecfb510 | 267 | int AVR910::checkMemory(int numPages, FILE* binary){ |
chris | 0:20fc0ecfb510 | 268 | |
chris | 0:20fc0ecfb510 | 269 | int success = 0; |
chris | 0:20fc0ecfb510 | 270 | int response = 0; |
chris | 0:20fc0ecfb510 | 271 | char c = 0; |
chris | 0:20fc0ecfb510 | 272 | |
chris | 0:20fc0ecfb510 | 273 | //Go back to the beginning of the binary file. |
chris | 0:20fc0ecfb510 | 274 | fseek(binary, 0, SEEK_SET); |
chris | 0:20fc0ecfb510 | 275 | |
chris | 0:20fc0ecfb510 | 276 | for(int i = 0; i < numPages; i++){ |
chris | 0:20fc0ecfb510 | 277 | for (int j = 0; j < PAGE_SIZE; j++) { |
chris | 0:20fc0ecfb510 | 278 | c = getc(binary); |
chris | 0:20fc0ecfb510 | 279 | //Read program memory low byte. |
chris | 0:20fc0ecfb510 | 280 | response = readProgramMemory(READ_LOW_BYTE, i, j); |
chris | 0:20fc0ecfb510 | 281 | //debug.printf("Low byte: 0x%02x\n", response); |
chris | 0:20fc0ecfb510 | 282 | if( c != response ){ |
chris | 0:20fc0ecfb510 | 283 | debug.printf("page %i low byte %i: 0x%02x\n", i, j, response); |
chris | 0:20fc0ecfb510 | 284 | debug.printf("correct byte is 0x%02x\n", c); |
chris | 0:20fc0ecfb510 | 285 | success = -1; |
chris | 0:20fc0ecfb510 | 286 | } |
chris | 0:20fc0ecfb510 | 287 | |
chris | 0:20fc0ecfb510 | 288 | c = getc(binary); |
chris | 0:20fc0ecfb510 | 289 | //Read program memory high byte. |
chris | 0:20fc0ecfb510 | 290 | response = readProgramMemory(READ_HIGH_BYTE, i, j); |
chris | 0:20fc0ecfb510 | 291 | //debug.printf("High byte: 0x%02x\n", response); |
chris | 0:20fc0ecfb510 | 292 | if( c != response ){ |
chris | 0:20fc0ecfb510 | 293 | debug.printf("page %i high byte %i: 0x%02x\n", i, j, response); |
chris | 0:20fc0ecfb510 | 294 | debug.printf("correct byte is 0x%02x\n", c); |
chris | 0:20fc0ecfb510 | 295 | success = -1; |
chris | 0:20fc0ecfb510 | 296 | } |
chris | 0:20fc0ecfb510 | 297 | } |
chris | 0:20fc0ecfb510 | 298 | } |
chris | 0:20fc0ecfb510 | 299 | |
chris | 0:20fc0ecfb510 | 300 | return success; |
chris | 0:20fc0ecfb510 | 301 | |
chris | 0:20fc0ecfb510 | 302 | } |