Siva ram
I2C boot loader with Blinky code Should test it with Freescale boards fingers crossed should work
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main.cpp
00001 #include "mbed.h" 00002 #include <stdbool.h> 00003 #include <stdint.h> 00004 //#include <fcntl.h> 00005 #include <stdlib.h> 00006 #include <stdio.h> 00007 //#include <memory.h> 00008 00009 00010 /* 00011 00012 Use pull up resistors 00013 Test Sample I2C with Tiva 00014 Learn about the I2C in freescale boards 00015 Check I2CReceiveData and I2CSendData compatibitily with Tiva 00016 Now Use ROM boot loader 00017 if it works get the flash code from CDMS people and try with that 00018 00019 */ 00020 00021 // BootLoader 00022 00023 Serial pc(USBTX, USBRX); // tx, rx 00024 00025 I2C i2c(D15, D14); 00026 00027 const int addr = 0x42; 00028 00029 #define COMMAND_PING 0x20 00030 #define COMMAND_DOWNLOAD 0x21 00031 #define COMMAND_RUN 0x22 00032 #define COMMAND_GET_STATUS 0x23 00033 #define COMMAND_SEND_DATA 0x24 00034 #define COMMAND_RESET 0x25 00035 #define COMMAND_RET_SUCCESS 0x40 00036 #define COMMAND_RET_UNKNOWN_CMD 0x41 00037 #define COMMAND_RET_INVALID_CMD 0x42 00038 #define COMMAND_RET_INVALID_ADR 0x43 00039 #define COMMAND_RET_FLASH_FAIL 0x44 00040 #define COMMAND_RET_CRC_FAIL 0x45 00041 #define COMMAND_ACK 0xcc 00042 #define COMMAND_NAK 0x33 00043 00044 //***************************************************************************** 00045 // 00046 //! This variable will be set to the starting address of the binary will be 00047 //! programmed into to device. 00048 // 00049 00050 static uint32_t g_ui32DownloadAddress; 00051 00052 00053 // 00054 //! This variable will be set to the start execution address for the binary 00055 //! that is downloaded. 00056 // 00057 00058 static uint32_t g_ui32StartAddress; 00059 00060 00061 00062 00063 uint32_t g_ui32DataSize; 00064 uint8_t g_pui8Buffer[256]; 00065 00066 uint8_t CheckSum(uint8_t *pui8Data, uint8_t ui8Size); 00067 00068 // 00069 00070 int 00071 I2CSendData(uint8_t const *pui8Data, uint8_t ui8Size) 00072 { 00073 00074 int i; 00075 char temp[ui8Size]; 00076 00077 00078 00079 for(i=0;i<ui8Size;i++) 00080 { 00081 00082 temp[i] = pui8Data[i]; 00083 00084 } 00085 00086 00087 if(i2c.write(addr, temp, ui8Size,0) == 0) 00088 { 00089 return (0); 00090 } 00091 00092 00093 pc.printf("Write Error\n"); 00094 return (-1); 00095 00096 00097 } 00098 00099 int 00100 I2CReceiveData(uint8_t *pui8Data, uint8_t ui8Size) 00101 { 00102 00103 int i; 00104 char temp[ui8Size]; 00105 00106 00107 00108 for(i=0;i<ui8Size;i++) 00109 { 00110 00111 temp[i] = pui8Data[i]; 00112 00113 } 00114 00115 00116 if(i2c.read(addr, temp, ui8Size,0) == 0) 00117 { 00118 return (0); 00119 } 00120 00121 pc.printf("Recieve Error\n"); 00122 return (-1); 00123 00124 } 00125 00126 00127 //**************************************************************************** 00128 // 00129 //! AckPacket() sends an Acknowledge a packet. 00130 //! 00131 //! This function acknowledges a packet has been received from the device. 00132 //! 00133 //! \return The function returns zero to indicated success while any non-zero 00134 //! value indicates a failure. 00135 // 00136 //**************************************************************************** 00137 00138 00139 00140 00141 00142 int32_t 00143 AckPacket(void) 00144 { 00145 uint8_t ui8Ack; 00146 00147 ui8Ack = COMMAND_ACK; 00148 return(I2CSendData(&ui8Ack, 1)); 00149 } 00150 00151 00152 // 00153 //! NakPacket() sends a No Acknowledge packet. 00154 //! 00155 //! This function sends a no acknowledge for a packet that has been 00156 //! received unsuccessfully from the device. 00157 //! 00158 //! \return The function returns zero to indicated success while any non-zero 00159 //! value indicates a failure. 00160 // 00161 00162 int32_t 00163 NakPacket(void) 00164 { 00165 uint8_t ui8Nak; 00166 00167 ui8Nak = COMMAND_NAK; 00168 return(I2CSendData(&ui8Nak, 1)); 00169 } 00170 00171 00172 // 00173 //! GetPacket() receives a data packet. 00174 //! 00175 //! \param pui8Data is the location to store the data received from the device. 00176 //! \param pui8Size is the number of bytes returned in the pui8Data buffer that 00177 //! was provided. 00178 //! 00179 //! This function receives a packet of data from UART port. 00180 //! 00181 //! \returns The function returns zero to indicated success while any non-zero 00182 //! value indicates a failure. 00183 // 00184 00185 int32_t 00186 GetPacket(uint8_t *pui8Data, uint8_t *pui8Size) 00187 { 00188 uint8_t ui8CheckSum; 00189 uint8_t ui8Size; 00190 00191 // 00192 // Get the size and the checksum. 00193 // 00194 do 00195 { 00196 if(I2CReceiveData(&ui8Size, 1)) 00197 { 00198 return(-1); 00199 } 00200 } 00201 while(ui8Size == 0); 00202 00203 if(I2CReceiveData(&ui8CheckSum, 1)) 00204 { 00205 return(-1); 00206 } 00207 *pui8Size = ui8Size - 2; 00208 00209 if(I2CReceiveData(pui8Data, *pui8Size)) 00210 { 00211 *pui8Size = 0; 00212 return(-1); 00213 } 00214 00215 // 00216 // Calculate the checksum from the data. 00217 // 00218 if(CheckSum(pui8Data, *pui8Size) != ui8CheckSum) 00219 { 00220 *pui8Size = 0; 00221 return(NakPacket()); 00222 } 00223 00224 return(AckPacket()); 00225 } 00226 00227 00228 // 00229 //! CheckSum() Calculates an 8 bit checksum 00230 //! 00231 //! \param pui8Data is a pointer to an array of 8 bit data of size ui8Size. 00232 //! \param ui8Size is the size of the array that will run through the checksum 00233 //! algorithm. 00234 //! 00235 //! This function simply calculates an 8 bit checksum on the data passed in. 00236 //! 00237 //! \return The function returns the calculated checksum. 00238 // 00239 00240 uint8_t 00241 CheckSum(uint8_t *pui8Data, uint8_t ui8Size) 00242 { 00243 int32_t i; 00244 uint8_t ui8CheckSum; 00245 00246 ui8CheckSum = 0; 00247 00248 for(i = 0; i < ui8Size; ++i) 00249 { 00250 ui8CheckSum += pui8Data[i]; 00251 } 00252 return(ui8CheckSum); 00253 } 00254 00255 00256 // 00257 //! SendPacket() sends a data packet. 00258 //! 00259 //! \param pui8Data is the location of the data to be sent to the device. 00260 //! \param ui8Size is the number of bytes to send from puData. 00261 //! \param bAck is a boolean that is true if an ACK/NAK packet should be 00262 //! received in response to this packet. 00263 //! 00264 //! This function sends a packet of data to the device. 00265 //! 00266 //! \returns The function returns zero to indicated success while any non-zero 00267 //! value indicates a failure. 00268 // 00269 00270 int32_t 00271 SendPacket(uint8_t *pui8Data, uint8_t ui8Size, bool bAck) 00272 { 00273 uint8_t ui8CheckSum; 00274 uint8_t ui8Ack; 00275 00276 ui8CheckSum = CheckSum(pui8Data, ui8Size); 00277 00278 // 00279 // Make sure that we add the bytes for the size and checksum to the total. 00280 // 00281 ui8Size += 2; 00282 00283 // 00284 // Send the Size in bytes. 00285 // 00286 if(I2CSendData(&ui8Size, 1)) 00287 { 00288 return(-1); 00289 } 00290 00291 // 00292 // Send the CheckSum 00293 // 00294 if(I2CSendData(&ui8CheckSum, 1)) 00295 { 00296 return(-1); 00297 } 00298 00299 // 00300 // Now send the remaining bytes out. 00301 // 00302 ui8Size -= 2; 00303 00304 // 00305 // Send the Data 00306 // 00307 if(I2CSendData(pui8Data, ui8Size)) 00308 { 00309 return(-1); 00310 } 00311 00312 // 00313 // Return immediately if no ACK/NAK is expected. 00314 // 00315 if(!bAck) 00316 { 00317 return(0); 00318 } 00319 00320 // 00321 // Wait for the acknowledge from the device. 00322 // 00323 do 00324 { 00325 if(I2CReceiveData(&ui8Ack, 1)) 00326 { 00327 return(-1); 00328 } 00329 } 00330 while(ui8Ack == 0); 00331 00332 if(ui8Ack != COMMAND_ACK) 00333 { 00334 return(-1); 00335 } 00336 return(0); 00337 } 00338 00339 00340 int32_t 00341 SendCommand(uint8_t *pui8Command, uint8_t ui8Size) 00342 { 00343 uint8_t ui8Status; 00344 00345 // 00346 // Send the command itself. 00347 // 00348 if(SendPacket(pui8Command, ui8Size, 1) < 0) 00349 { 00350 return(-1); 00351 } 00352 00353 // 00354 // Send the get status command to tell the device to return status to 00355 // the host. 00356 // 00357 ui8Status = COMMAND_GET_STATUS; 00358 if(SendPacket(&ui8Status, 1, 1) < 0) 00359 { 00360 pc.printf("Failed to Get Status\n"); 00361 return(-1); 00362 } 00363 00364 // 00365 // Read back the status provided from the device. 00366 // 00367 ui8Size = sizeof(ui8Status); 00368 if(GetPacket(&ui8Status, &ui8Size) < 0) 00369 { 00370 pc.printf("Failed to Get Packet\n"); 00371 return(-1); 00372 } 00373 if(ui8Status != COMMAND_RET_SUCCESS) 00374 { 00375 pc.printf("Failed to get download command Return Code: %04x\n", 00376 ui8Status); 00377 return(-1); 00378 } 00379 return(0); 00380 } 00381 00382 00383 00384 int main() { 00385 00386 g_ui32DownloadAddress = 0; 00387 g_ui32StartAddress = 0xffffffff; 00388 g_ui32DataSize = 8; 00389 uint8_t ui8Command; 00390 00391 00392 uint32_t ui32TransferLength = 1424; 00393 uint32_t ui32Offset; 00394 uint8_t pui8FileBuffer[] = {0 , 1 , 0 , 32 , 95 , 5 , 0 , 0 , 109 , 5 , 0 , 0 , 251 , 3 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 107 , 5 , 0 , 0 , 0 , 42 , 74 , 208 , 95 , 234 , 0 , 12 , 139 , 7 , 28 , 209 , 131 , 7 , 34 , 209 , 16 , 42 , 8 , 211 , 112 , 180 , 16 , 58 , 120 , 201 , 120 , 192 , 16 , 58 , 251 , 210 , 112 , 188 , 16 , 50 , 56 , 208 , 4 , 42 , 44 , 211 , 8 , 42 , 5 , 211 , 12 , 42 , 36 , 191 , 8 , 201 , 8 , 192 , 8 , 201 , 8 , 192 , 8 , 201 , 8 , 192 , 146 , 7 , 42 , 208 , 146 , 15 , 34 , 224 , 11 , 120 , 3 , 112 , 73 , 28 , 64 , 28 , 82 , 30 , 34 , 208 , 139 , 7 , 247 , 209 , 195 , 7 , 20 , 209 , 131 , 7 , 216 , 208 , 18 , 31 , 18 , 211 , 8 , 201 , 3 , 128 , 27 , 12 , 67 , 128 , 0 , 29 , 18 , 31 , 248 , 210 , 10 , 224 , 8 , 201 , 3 , 112 , 27 , 10 , 67 , 112 , 27 , 10 , 131 , 112 , 27 , 10 , 195 , 112 , 0 , 29 , 18 , 31 , 244 , 210 , 18 , 29 , 5 , 208 , 11 , 120 , 3 , 112 , 73 , 28 , 64 , 28 , 82 , 30 , 249 , 209 , 96 , 70 , 112 , 71 , 240 , 181 , 30 , 72 , 1 , 39 , 248 , 66 , 1 , 208 , 0 , 240 , 195 , 248 , 30 , 77 , 30 , 79 , 31 , 78 , 189 , 66 , 6 , 210 , 3 , 205 , 4 , 120 , 164 , 0 , 52 , 89 , 64 , 28 , 160 , 71 , 246 , 231 , 22 , 77 , 22 , 79 , 189 , 66 , 2 , 210 , 16 , 205 , 160 , 71 , 250 , 231 , 240 , 189 , 3 , 37 , 27 , 224 , 65 , 104 , 8 , 48 , 10 , 28 , 42 , 64 , 11 , 209 , 26 , 28 , 42 , 64 , 171 , 67 , 5 , 208 , 4 , 104 , 4 , 48 , 12 , 96 , 4 , 49 , 4 , 59 , 249 , 209 , 19 , 28 , 5 , 208 , 4 , 120 , 1 , 48 , 12 , 112 , 1 , 49 , 1 , 59 , 249 , 209 , 2 , 28 , 42 , 64 , 1 , 208 , 168 , 67 , 4 , 48 , 3 , 104 , 0 , 43 , 224 , 209 , 112 , 71 , 192 , 70 , 255 , 255 , 255 , 255 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 136 , 5 , 0 , 0 , 144 , 5 , 0 , 0 , 128 , 5 , 0 , 0 , 112 , 181 , 16 , 248 , 1 , 75 , 27 , 224 , 64 , 28 , 90 , 177 , 29 , 10 , 9 , 209 , 2 , 37 , 16 , 248 , 1 , 107 , 109 , 30 , 70 , 234 , 3 , 35 , 249 , 209 , 1 , 224 , 4 , 43 , 2 , 211 , 16 , 248 , 1 , 91 , 3 , 224 , 37 , 70 , 1 , 224 , 1 , 248 , 1 , 91 , 91 , 30 , 179 , 241 , 255 , 63 , 249 , 209 , 1 , 224 , 1 , 248 , 1 , 59 , 16 , 248 , 1 , 59 , 156 , 66 , 249 , 209 , 16 , 248 , 1 , 59 , 0 , 43 , 231 , 209 , 16 , 248 , 1 , 91 , 3 , 120 , 45 , 2 , 91 , 25 , 213 , 209 , 112 , 189 , 254 , 231 , 18 , 72 , 19 , 75 , 32 , 33 , 1 , 96 , 2 , 104 , 18 , 73 , 173 , 241 , 8 , 13 , 0 , 146 , 2 , 32 , 88 , 96 , 0 , 34 , 195 , 248 , 32 , 1 , 24 , 104 , 64 , 240 , 2 , 0 , 24 , 96 , 0 , 146 , 0 , 152 , 129 , 66 , 11 , 216 , 24 , 104 , 32 , 240 , 2 , 0 , 24 , 96 , 0 , 146 , 0 , 152 , 129 , 66 , 239 , 217 , 0 , 152 , 64 , 28 , 0 , 144 , 248 , 231 , 0 , 152 , 64 , 28 , 0 , 144 , 236 , 231 , 8 , 225 , 15 , 64 , 252 , 83 , 2 , 64 , 64 , 13 , 3 , 0 , 78 , 246 , 136 , 81 , 206 , 242 , 0 , 1 , 8 , 104 , 79 , 240 , 240 , 3 , 64 , 234 , 3 , 64 , 8 , 96 , 9 , 72 , 133 , 70 , 9 , 72 , 133 , 68 , 111 , 70 , 7 , 32 , 135 , 67 , 189 , 70 , 7 , 72 , 111 , 70 , 7 , 96 , 255 , 247 , 67 , 255 , 0 , 240 , 79 , 248 , 1 , 32 , 0 , 240 , 48 , 248 , 254 , 231 , 192 , 70 , 0 , 0 , 0 , 32 , 0 , 1 , 0 , 0 , 16 , 1 , 0 , 32 , 112 , 181 , 15 , 77 , 6 , 70 , 115 , 136 , 0 , 36 , 22 , 224 , 160 , 0 , 0 , 235 , 196 , 0 , 48 , 24 , 65 , 104 , 194 , 104 , 128 , 104 , 74 , 185 , 42 , 104 , 82 , 177 , 10 , 120 , 85 , 248 , 34 , 48 , 74 , 28 , 1 , 70 , 16 , 70 , 152 , 71 , 1 , 224 , 255 , 247 , 206 , 254 , 115 , 136 , 100 , 28 , 164 , 178 , 163 , 66 , 230 , 220 , 112 , 189 , 128 , 5 , 0 , 0 , 0 , 191 , 112 , 71 , 8 , 181 , 255 , 247 , 251 , 255 , 254 , 231 , 56 , 181 , 5 , 70 , 9 , 72 , 0 , 104 , 128 , 71 , 9 , 76 , 32 , 29 , 0 , 104 , 16 , 177 , 1 , 70 , 40 , 70 , 136 , 71 , 32 , 104 , 0 , 177 , 128 , 71 , 5 , 72 , 0 , 104 , 128 , 71 , 255 , 247 , 232 , 255 , 56 , 189 , 192 , 70 , 0 , 1 , 0 , 32 , 8 , 1 , 0 , 32 , 4 , 1 , 0 , 32 , 4 , 73 , 177 , 241 , 255 , 63 , 7 , 191 , 0 , 33 , 8 , 28 , 8 , 104 , 9 , 29 , 255 , 247 , 98 , 191 , 255 , 255 , 255 , 255 , 3 , 73 , 8 , 96 , 112 , 71 , 2 , 73 , 9 , 31 , 8 , 96 , 112 , 71 , 112 , 71 , 4 , 1 , 0 , 32 , 208 , 248 , 3 , 32 , 195 , 29 , 8 , 70 , 25 , 70 , 255 , 247 , 135 , 190 , 255 , 247 , 121 , 191 , 112 , 71 , 1 , 34 , 255 , 247 , 25 , 191 , 254 , 231 , 254 , 231 , 0 , 0 , 0 , 1 , 75 , 5 , 0 , 0 , 75 , 5 , 1 , 14 , 0 , 1 , 0 , 0 , 0 , 0 , 101 , 5 , 0 , 0 , 81 , 5 , 0 , 0 , 112 , 5 , 0 , 0 , 0 , 1 , 0 , 32}; 00395 00396 00397 if(g_ui32StartAddress != 0xffffffff) 00398 { 00399 // 00400 // Send the run command but just send the packet, there will likely 00401 // be no boot loader to answer after this command completes. 00402 // 00403 g_pui8Buffer[0] = COMMAND_RUN; 00404 g_pui8Buffer[1] = (uint8_t)(g_ui32StartAddress>>24); 00405 g_pui8Buffer[2] = (uint8_t)(g_ui32StartAddress>>16); 00406 g_pui8Buffer[3] = (uint8_t)(g_ui32StartAddress>>8); 00407 g_pui8Buffer[4] = (uint8_t)g_ui32StartAddress; 00408 if(SendPacket(g_pui8Buffer, 5, 0) < 0) 00409 { 00410 pc.printf("Failed to Send Run command\n"); 00411 } 00412 else 00413 { 00414 pc.printf("Running from address %08x\n",g_ui32StartAddress); 00415 } 00416 00417 } 00418 00419 else 00420 { 00421 00422 g_pui8Buffer[0] = COMMAND_DOWNLOAD; 00423 g_pui8Buffer[1] = (uint8_t)(g_ui32DownloadAddress >> 24); 00424 g_pui8Buffer[2] = (uint8_t)(g_ui32DownloadAddress >> 16); 00425 g_pui8Buffer[3] = (uint8_t)(g_ui32DownloadAddress >> 8); 00426 g_pui8Buffer[4] = (uint8_t)g_ui32DownloadAddress; 00427 g_pui8Buffer[5] = (uint8_t)(ui32TransferLength>>24); 00428 g_pui8Buffer[6] = (uint8_t)(ui32TransferLength>>16); 00429 g_pui8Buffer[7] = (uint8_t)(ui32TransferLength>>8); 00430 g_pui8Buffer[8] = (uint8_t)ui32TransferLength; 00431 } 00432 00433 00434 ui8Command = COMMAND_PING; 00435 if(SendCommand(&ui8Command, 1) < 0) 00436 { 00437 pc.printf("Ping fail"); 00438 return(-1); 00439 } 00440 00441 if(SendCommand(g_pui8Buffer, 9) < 0) 00442 { 00443 pc.printf("Failed to Send Download Command\n"); 00444 return(-1); 00445 } 00446 00447 00448 ui32Offset = 0; 00449 00450 pc.printf("Remaining Bytes: "); 00451 do 00452 { 00453 uint8_t ui8BytesSent; 00454 00455 g_pui8Buffer[0] = COMMAND_SEND_DATA; 00456 00457 pc.printf("%08ld", ui32TransferLength); 00458 00459 // 00460 // Send out 8 bytes at a time to throttle download rate and avoid 00461 // overruning the device since it is programming flash on the fly. 00462 // 00463 if(ui32TransferLength >= g_ui32DataSize) 00464 { 00465 memcpy(&g_pui8Buffer[1], &pui8FileBuffer[ui32Offset], g_ui32DataSize); 00466 00467 ui32Offset += g_ui32DataSize; 00468 ui32TransferLength -= g_ui32DataSize; 00469 ui8BytesSent = g_ui32DataSize + 1; 00470 } 00471 else 00472 { 00473 memcpy(&g_pui8Buffer[1], &pui8FileBuffer[ui32Offset], ui32TransferLength); 00474 ui32Offset += ui32TransferLength; 00475 ui8BytesSent = ui32TransferLength + 1; 00476 ui32TransferLength = 0; 00477 } 00478 // 00479 // Send the Send Data command to the device. 00480 // 00481 if(SendCommand(g_pui8Buffer, ui8BytesSent) < 0) 00482 { 00483 pc.printf("Failed to Send Packet data\n"); 00484 break; 00485 } 00486 00487 pc.printf("\b\b\b\b\b\b\b\b"); 00488 } while (ui32TransferLength); 00489 pc.printf("00000000\n"); 00490 00491 g_pui8Buffer[0] = COMMAND_RESET; 00492 SendPacket(g_pui8Buffer, 1, 0); 00493 00494 }
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