Siva ram / Mbed 2 deprecated I2Cboot

I2C boot loader

Dependencies:   mbed

Fork of I2C_HelloWorld_Mbed by mbed official

main.cpp@1:c39e5581f901, 2015-05-23 (annotated)

Committer:
Piasiv1206
Date:
Sat May 23 23:04:50 2015 +0000
Revision:
1:c39e5581f901
Parent:
0:f76c26307f9a 
Main code alone left; Should figure out a way to store code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:f76c26307f9a 1 #include "mbed.h"
Piasiv1206 1:c39e5581f901 2 #include <stdbool.h>
Piasiv1206 1:c39e5581f901 3 #include <stdint.h>
Piasiv1206 1:c39e5581f901 4 #include <fcntl.h>
Piasiv1206 1:c39e5581f901 5 #include <stdlib.h>
Piasiv1206 1:c39e5581f901 6 #include <stdio.h>
Piasiv1206 1:c39e5581f901 7 #include <memory.h>
Piasiv1206 1:c39e5581f901 8
Piasiv1206 1:c39e5581f901 9
Piasiv1206 1:c39e5581f901 10 // BootLoader
Piasiv1206 1:c39e5581f901 11
Piasiv1206 1:c39e5581f901 12 Serial pc(USBTX, USBRX); // tx, rx
mbed_official 0:f76c26307f9a 13
mbed_official 0:f76c26307f9a 14 I2C i2c(p28, p27);
mbed_official 0:f76c26307f9a 15
mbed_official 0:f76c26307f9a 16 const int addr = 0x90;
mbed_official 0:f76c26307f9a 17
Piasiv1206 1:c39e5581f901 18 #define COMMAND_PING 0x20
Piasiv1206 1:c39e5581f901 19 #define COMMAND_DOWNLOAD 0x21
Piasiv1206 1:c39e5581f901 20 #define COMMAND_RUN 0x22
Piasiv1206 1:c39e5581f901 21 #define COMMAND_GET_STATUS 0x23
Piasiv1206 1:c39e5581f901 22 #define COMMAND_SEND_DATA 0x24
Piasiv1206 1:c39e5581f901 23 #define COMMAND_RESET 0x25
Piasiv1206 1:c39e5581f901 24 #define COMMAND_RET_SUCCESS 0x40
Piasiv1206 1:c39e5581f901 25 #define COMMAND_RET_UNKNOWN_CMD 0x41
Piasiv1206 1:c39e5581f901 26 #define COMMAND_RET_INVALID_CMD 0x42
Piasiv1206 1:c39e5581f901 27 #define COMMAND_RET_INVALID_ADR 0x43
Piasiv1206 1:c39e5581f901 28 #define COMMAND_RET_FLASH_FAIL 0x44
Piasiv1206 1:c39e5581f901 29 #define COMMAND_RET_CRC_FAIL 0x45
Piasiv1206 1:c39e5581f901 30 #define COMMAND_ACK 0xcc
Piasiv1206 1:c39e5581f901 31 #define COMMAND_NAK 0x33
Piasiv1206 1:c39e5581f901 32
Piasiv1206 1:c39e5581f901 33 //*****************************************************************************
Piasiv1206 1:c39e5581f901 34 //
Piasiv1206 1:c39e5581f901 35 //! This variable will be set to the starting address of the binary will be
Piasiv1206 1:c39e5581f901 36 //! programmed into to device.
Piasiv1206 1:c39e5581f901 37 //
Piasiv1206 1:c39e5581f901 38 //*****************************************************************************
Piasiv1206 1:c39e5581f901 39 static uint32_t g_ui32DownloadAddress;
Piasiv1206 1:c39e5581f901 40
Piasiv1206 1:c39e5581f901 41 //*****************************************************************************
Piasiv1206 1:c39e5581f901 42 //
Piasiv1206 1:c39e5581f901 43 //! This variable will be set to the start execution address for the binary
Piasiv1206 1:c39e5581f901 44 //! that is downloaded.
Piasiv1206 1:c39e5581f901 45 //
Piasiv1206 1:c39e5581f901 46 //*****************************************************************************
Piasiv1206 1:c39e5581f901 47 static uint32_t g_ui32StartAddress;
Piasiv1206 1:c39e5581f901 48
Piasiv1206 1:c39e5581f901 49 //*****************************************************************************
Piasiv1206 1:c39e5581f901 50
Piasiv1206 1:c39e5581f901 51
Piasiv1206 1:c39e5581f901 52 uint32_t g_ui32DataSize;
Piasiv1206 1:c39e5581f901 53 uint8_t g_pui8Buffer[256];
Piasiv1206 1:c39e5581f901 54
Piasiv1206 1:c39e5581f901 55
Piasiv1206 1:c39e5581f901 56 //
Piasiv1206 1:c39e5581f901 57
Piasiv1206 1:c39e5581f901 58 int
Piasiv1206 1:c39e5581f901 59 I2CSendData(uint8_t const *pui8Data, uint8_t ui8Size)
Piasiv1206 1:c39e5581f901 60 {
Piasiv1206 1:c39e5581f901 61
Piasiv1206 1:c39e5581f901 62 if(i2c.write(addr, pui8Data, ui8Size) == 1)
Piasiv1206 1:c39e5581f901 63 {
Piasiv1206 1:c39e5581f901 64 return (0);
Piasiv1206 1:c39e5581f901 65 }
Piasiv1206 1:c39e5581f901 66
Piasiv1206 1:c39e5581f901 67 else
Piasiv1206 1:c39e5581f901 68
Piasiv1206 1:c39e5581f901 69 {
Piasiv1206 1:c39e5581f901 70 return (-1);
Piasiv1206 1:c39e5581f901 71 }
mbed_official 0:f76c26307f9a 72
Piasiv1206 1:c39e5581f901 73
Piasiv1206 1:c39e5581f901 74 }
Piasiv1206 1:c39e5581f901 75
Piasiv1206 1:c39e5581f901 76 int
Piasiv1206 1:c39e5581f901 77 I2CReceiveData(uint8_t *pui8Data, uint8_t ui8Size)
Piasiv1206 1:c39e5581f901 78 {
Piasiv1206 1:c39e5581f901 79 if(i2c.read(addr, pui8Data, ui8Size == 0)
Piasiv1206 1:c39e5581f901 80 {
Piasiv1206 1:c39e5581f901 81 return (0);
Piasiv1206 1:c39e5581f901 82 }
Piasiv1206 1:c39e5581f901 83
Piasiv1206 1:c39e5581f901 84 return (-1);
Piasiv1206 1:c39e5581f901 85
Piasiv1206 1:c39e5581f901 86 }
mbed_official 0:f76c26307f9a 87
Piasiv1206 1:c39e5581f901 88
Piasiv1206 1:c39e5581f901 89 //****************************************************************************
Piasiv1206 1:c39e5581f901 90 //
Piasiv1206 1:c39e5581f901 91 //! AckPacket() sends an Acknowledge a packet.
Piasiv1206 1:c39e5581f901 92 //!
Piasiv1206 1:c39e5581f901 93 //! This function acknowledges a packet has been received from the device.
Piasiv1206 1:c39e5581f901 94 //!
Piasiv1206 1:c39e5581f901 95 //! \return The function returns zero to indicated success while any non-zero
Piasiv1206 1:c39e5581f901 96 //! value indicates a failure.
Piasiv1206 1:c39e5581f901 97 //
Piasiv1206 1:c39e5581f901 98 //****************************************************************************
Piasiv1206 1:c39e5581f901 99 int32_t
Piasiv1206 1:c39e5581f901 100 AckPacket(void)
Piasiv1206 1:c39e5581f901 101 {
Piasiv1206 1:c39e5581f901 102 uint8_t ui8Ack;
Piasiv1206 1:c39e5581f901 103
Piasiv1206 1:c39e5581f901 104 ui8Ack = COMMAND_ACK;
Piasiv1206 1:c39e5581f901 105 return(I2CSendData(&ui8Ack, 1));
Piasiv1206 1:c39e5581f901 106 }
Piasiv1206 1:c39e5581f901 107
Piasiv1206 1:c39e5581f901 108 //****************************************************************************
Piasiv1206 1:c39e5581f901 109 //
Piasiv1206 1:c39e5581f901 110 //! NakPacket() sends a No Acknowledge packet.
Piasiv1206 1:c39e5581f901 111 //!
Piasiv1206 1:c39e5581f901 112 //! This function sends a no acknowledge for a packet that has been
Piasiv1206 1:c39e5581f901 113 //! received unsuccessfully from the device.
Piasiv1206 1:c39e5581f901 114 //!
Piasiv1206 1:c39e5581f901 115 //! \return The function returns zero to indicated success while any non-zero
Piasiv1206 1:c39e5581f901 116 //! value indicates a failure.
Piasiv1206 1:c39e5581f901 117 //
Piasiv1206 1:c39e5581f901 118 //****************************************************************************
Piasiv1206 1:c39e5581f901 119 int32_t
Piasiv1206 1:c39e5581f901 120 NakPacket(void)
Piasiv1206 1:c39e5581f901 121 {
Piasiv1206 1:c39e5581f901 122 uint8_t ui8Nak;
Piasiv1206 1:c39e5581f901 123
Piasiv1206 1:c39e5581f901 124 ui8Nak = COMMAND_NAK;
Piasiv1206 1:c39e5581f901 125 return(I2CSendData(&ui8Nak, 1));
Piasiv1206 1:c39e5581f901 126 }
Piasiv1206 1:c39e5581f901 127
Piasiv1206 1:c39e5581f901 128 //*****************************************************************************
Piasiv1206 1:c39e5581f901 129 //
Piasiv1206 1:c39e5581f901 130 //! GetPacket() receives a data packet.
Piasiv1206 1:c39e5581f901 131 //!
Piasiv1206 1:c39e5581f901 132 //! \param pui8Data is the location to store the data received from the device.
Piasiv1206 1:c39e5581f901 133 //! \param pui8Size is the number of bytes returned in the pui8Data buffer that
Piasiv1206 1:c39e5581f901 134 //! was provided.
Piasiv1206 1:c39e5581f901 135 //!
Piasiv1206 1:c39e5581f901 136 //! This function receives a packet of data from UART port.
Piasiv1206 1:c39e5581f901 137 //!
Piasiv1206 1:c39e5581f901 138 //! \returns The function returns zero to indicated success while any non-zero
Piasiv1206 1:c39e5581f901 139 //! value indicates a failure.
Piasiv1206 1:c39e5581f901 140 //
Piasiv1206 1:c39e5581f901 141 //*****************************************************************************
Piasiv1206 1:c39e5581f901 142 int32_t
Piasiv1206 1:c39e5581f901 143 GetPacket(uint8_t *pui8Data, uint8_t *pui8Size)
Piasiv1206 1:c39e5581f901 144 {
Piasiv1206 1:c39e5581f901 145 uint8_t ui8CheckSum;
Piasiv1206 1:c39e5581f901 146 uint8_t ui8Size;
Piasiv1206 1:c39e5581f901 147
Piasiv1206 1:c39e5581f901 148 //
Piasiv1206 1:c39e5581f901 149 // Get the size and the checksum.
Piasiv1206 1:c39e5581f901 150 //
Piasiv1206 1:c39e5581f901 151 do
Piasiv1206 1:c39e5581f901 152 {
Piasiv1206 1:c39e5581f901 153 if(I2CReceiveData(&ui8Size, 1))
Piasiv1206 1:c39e5581f901 154 {
Piasiv1206 1:c39e5581f901 155 return(-1);
Piasiv1206 1:c39e5581f901 156 }
Piasiv1206 1:c39e5581f901 157 }
Piasiv1206 1:c39e5581f901 158 while(ui8Size == 0);
Piasiv1206 1:c39e5581f901 159
Piasiv1206 1:c39e5581f901 160 if(I2CReceiveData(&ui8CheckSum, 1))
Piasiv1206 1:c39e5581f901 161 {
Piasiv1206 1:c39e5581f901 162 return(-1);
Piasiv1206 1:c39e5581f901 163 }
Piasiv1206 1:c39e5581f901 164 *pui8Size = ui8Size - 2;
Piasiv1206 1:c39e5581f901 165
Piasiv1206 1:c39e5581f901 166 if(I2CReceiveData(pui8Data, *pui8Size))
Piasiv1206 1:c39e5581f901 167 {
Piasiv1206 1:c39e5581f901 168 *pui8Size = 0;
Piasiv1206 1:c39e5581f901 169 return(-1);
Piasiv1206 1:c39e5581f901 170 }
Piasiv1206 1:c39e5581f901 171
Piasiv1206 1:c39e5581f901 172 //
Piasiv1206 1:c39e5581f901 173 // Calculate the checksum from the data.
Piasiv1206 1:c39e5581f901 174 //
Piasiv1206 1:c39e5581f901 175 if(CheckSum(pui8Data, *pui8Size) != ui8CheckSum)
Piasiv1206 1:c39e5581f901 176 {
Piasiv1206 1:c39e5581f901 177 *pui8Size = 0;
Piasiv1206 1:c39e5581f901 178 return(NakPacket());
Piasiv1206 1:c39e5581f901 179 }
Piasiv1206 1:c39e5581f901 180
Piasiv1206 1:c39e5581f901 181 return(AckPacket());
Piasiv1206 1:c39e5581f901 182 }
Piasiv1206 1:c39e5581f901 183
Piasiv1206 1:c39e5581f901 184 //*****************************************************************************
Piasiv1206 1:c39e5581f901 185 //
Piasiv1206 1:c39e5581f901 186 //! CheckSum() Calculates an 8 bit checksum
Piasiv1206 1:c39e5581f901 187 //!
Piasiv1206 1:c39e5581f901 188 //! \param pui8Data is a pointer to an array of 8 bit data of size ui8Size.
Piasiv1206 1:c39e5581f901 189 //! \param ui8Size is the size of the array that will run through the checksum
Piasiv1206 1:c39e5581f901 190 //! algorithm.
Piasiv1206 1:c39e5581f901 191 //!
Piasiv1206 1:c39e5581f901 192 //! This function simply calculates an 8 bit checksum on the data passed in.
Piasiv1206 1:c39e5581f901 193 //!
Piasiv1206 1:c39e5581f901 194 //! \return The function returns the calculated checksum.
Piasiv1206 1:c39e5581f901 195 //
Piasiv1206 1:c39e5581f901 196 //*****************************************************************************
Piasiv1206 1:c39e5581f901 197 uint8_t
Piasiv1206 1:c39e5581f901 198 CheckSum(uint8_t *pui8Data, uint8_t ui8Size)
Piasiv1206 1:c39e5581f901 199 {
Piasiv1206 1:c39e5581f901 200 int32_t i;
Piasiv1206 1:c39e5581f901 201 uint8_t ui8CheckSum;
Piasiv1206 1:c39e5581f901 202
Piasiv1206 1:c39e5581f901 203 ui8CheckSum = 0;
Piasiv1206 1:c39e5581f901 204
Piasiv1206 1:c39e5581f901 205 for(i = 0; i < ui8Size; ++i)
Piasiv1206 1:c39e5581f901 206 {
Piasiv1206 1:c39e5581f901 207 ui8CheckSum += pui8Data[i];
Piasiv1206 1:c39e5581f901 208 }
Piasiv1206 1:c39e5581f901 209 return(ui8CheckSum);
Piasiv1206 1:c39e5581f901 210 }
Piasiv1206 1:c39e5581f901 211
Piasiv1206 1:c39e5581f901 212 //*****************************************************************************
Piasiv1206 1:c39e5581f901 213 //
Piasiv1206 1:c39e5581f901 214 //! SendPacket() sends a data packet.
Piasiv1206 1:c39e5581f901 215 //!
Piasiv1206 1:c39e5581f901 216 //! \param pui8Data is the location of the data to be sent to the device.
Piasiv1206 1:c39e5581f901 217 //! \param ui8Size is the number of bytes to send from puData.
Piasiv1206 1:c39e5581f901 218 //! \param bAck is a boolean that is true if an ACK/NAK packet should be
Piasiv1206 1:c39e5581f901 219 //! received in response to this packet.
Piasiv1206 1:c39e5581f901 220 //!
Piasiv1206 1:c39e5581f901 221 //! This function sends a packet of data to the device.
Piasiv1206 1:c39e5581f901 222 //!
Piasiv1206 1:c39e5581f901 223 //! \returns The function returns zero to indicated success while any non-zero
Piasiv1206 1:c39e5581f901 224 //! value indicates a failure.
Piasiv1206 1:c39e5581f901 225 //
Piasiv1206 1:c39e5581f901 226 //*****************************************************************************
Piasiv1206 1:c39e5581f901 227 int32_t
Piasiv1206 1:c39e5581f901 228 SendPacket(uint8_t *pui8Data, uint8_t ui8Size, bool bAck)
Piasiv1206 1:c39e5581f901 229 {
Piasiv1206 1:c39e5581f901 230 uint8_t ui8CheckSum;
Piasiv1206 1:c39e5581f901 231 uint8_t ui8Ack;
Piasiv1206 1:c39e5581f901 232
Piasiv1206 1:c39e5581f901 233 ui8CheckSum = CheckSum(pui8Data, ui8Size);
Piasiv1206 1:c39e5581f901 234
Piasiv1206 1:c39e5581f901 235 //
Piasiv1206 1:c39e5581f901 236 // Make sure that we add the bytes for the size and checksum to the total.
Piasiv1206 1:c39e5581f901 237 //
Piasiv1206 1:c39e5581f901 238 ui8Size += 2;
Piasiv1206 1:c39e5581f901 239
Piasiv1206 1:c39e5581f901 240 //
Piasiv1206 1:c39e5581f901 241 // Send the Size in bytes.
Piasiv1206 1:c39e5581f901 242 //
Piasiv1206 1:c39e5581f901 243 if(I2CSendData(&ui8Size, 1))
Piasiv1206 1:c39e5581f901 244 {
Piasiv1206 1:c39e5581f901 245 return(-1);
Piasiv1206 1:c39e5581f901 246 }
Piasiv1206 1:c39e5581f901 247
Piasiv1206 1:c39e5581f901 248 //
Piasiv1206 1:c39e5581f901 249 // Send the CheckSum
Piasiv1206 1:c39e5581f901 250 //
Piasiv1206 1:c39e5581f901 251 if(I2CSendData(&ui8CheckSum, 1))
Piasiv1206 1:c39e5581f901 252 {
Piasiv1206 1:c39e5581f901 253 return(-1);
Piasiv1206 1:c39e5581f901 254 }
Piasiv1206 1:c39e5581f901 255
Piasiv1206 1:c39e5581f901 256 //
Piasiv1206 1:c39e5581f901 257 // Now send the remaining bytes out.
Piasiv1206 1:c39e5581f901 258 //
Piasiv1206 1:c39e5581f901 259 ui8Size -= 2;
Piasiv1206 1:c39e5581f901 260
Piasiv1206 1:c39e5581f901 261 //
Piasiv1206 1:c39e5581f901 262 // Send the Data
Piasiv1206 1:c39e5581f901 263 //
Piasiv1206 1:c39e5581f901 264 if(I2CSendData(pui8Data, ui8Size))
Piasiv1206 1:c39e5581f901 265 {
Piasiv1206 1:c39e5581f901 266 return(-1);
Piasiv1206 1:c39e5581f901 267 }
Piasiv1206 1:c39e5581f901 268
Piasiv1206 1:c39e5581f901 269 //
Piasiv1206 1:c39e5581f901 270 // Return immediately if no ACK/NAK is expected.
Piasiv1206 1:c39e5581f901 271 //
Piasiv1206 1:c39e5581f901 272 if(!bAck)
Piasiv1206 1:c39e5581f901 273 {
Piasiv1206 1:c39e5581f901 274 return(0);
Piasiv1206 1:c39e5581f901 275 }
Piasiv1206 1:c39e5581f901 276
Piasiv1206 1:c39e5581f901 277 //
Piasiv1206 1:c39e5581f901 278 // Wait for the acknowledge from the device.
Piasiv1206 1:c39e5581f901 279 //
Piasiv1206 1:c39e5581f901 280 do
Piasiv1206 1:c39e5581f901 281 {
Piasiv1206 1:c39e5581f901 282 if(I2CReceiveData(&ui8Ack, 1))
Piasiv1206 1:c39e5581f901 283 {
Piasiv1206 1:c39e5581f901 284 return(-1);
Piasiv1206 1:c39e5581f901 285 }
Piasiv1206 1:c39e5581f901 286 }
Piasiv1206 1:c39e5581f901 287 while(ui8Ack == 0);
Piasiv1206 1:c39e5581f901 288
Piasiv1206 1:c39e5581f901 289 if(ui8Ack != COMMAND_ACK)
Piasiv1206 1:c39e5581f901 290 {
Piasiv1206 1:c39e5581f901 291 return(-1);
Piasiv1206 1:c39e5581f901 292 }
Piasiv1206 1:c39e5581f901 293 return(0);
Piasiv1206 1:c39e5581f901 294 }
Piasiv1206 1:c39e5581f901 295
Piasiv1206 1:c39e5581f901 296
Piasiv1206 1:c39e5581f901 297 int32_t
Piasiv1206 1:c39e5581f901 298 SendCommand(uint8_t *pui8Command, uint8_t ui8Size)
Piasiv1206 1:c39e5581f901 299 {
Piasiv1206 1:c39e5581f901 300 uint8_t ui8Status;
Piasiv1206 1:c39e5581f901 301
Piasiv1206 1:c39e5581f901 302 //
Piasiv1206 1:c39e5581f901 303 // Send the command itself.
Piasiv1206 1:c39e5581f901 304 //
Piasiv1206 1:c39e5581f901 305 if(SendPacket(pui8Command, ui8Size, 1) < 0)
Piasiv1206 1:c39e5581f901 306 {
Piasiv1206 1:c39e5581f901 307 return(-1);
Piasiv1206 1:c39e5581f901 308 }
Piasiv1206 1:c39e5581f901 309
Piasiv1206 1:c39e5581f901 310 //
Piasiv1206 1:c39e5581f901 311 // Send the get status command to tell the device to return status to
Piasiv1206 1:c39e5581f901 312 // the host.
Piasiv1206 1:c39e5581f901 313 //
Piasiv1206 1:c39e5581f901 314 ui8Status = COMMAND_GET_STATUS;
Piasiv1206 1:c39e5581f901 315 if(SendPacket(&ui8Status, 1, 1) < 0)
Piasiv1206 1:c39e5581f901 316 {
Piasiv1206 1:c39e5581f901 317 pc.printf("Failed to Get Status\n");
Piasiv1206 1:c39e5581f901 318 return(-1);
Piasiv1206 1:c39e5581f901 319 }
Piasiv1206 1:c39e5581f901 320
Piasiv1206 1:c39e5581f901 321 //
Piasiv1206 1:c39e5581f901 322 // Read back the status provided from the device.
Piasiv1206 1:c39e5581f901 323 //
Piasiv1206 1:c39e5581f901 324 ui8Size = sizeof(ui8Status);
Piasiv1206 1:c39e5581f901 325 if(GetPacket(&ui8Status, &ui8Size) < 0)
Piasiv1206 1:c39e5581f901 326 {
Piasiv1206 1:c39e5581f901 327 pc.printf("Failed to Get Packet\n");
Piasiv1206 1:c39e5581f901 328 return(-1);
Piasiv1206 1:c39e5581f901 329 }
Piasiv1206 1:c39e5581f901 330 if(ui8Status != COMMAND_RET_SUCCESS)
Piasiv1206 1:c39e5581f901 331 {
Piasiv1206 1:c39e5581f901 332 pc.printf("Failed to get download command Return Code: %04x\n",
Piasiv1206 1:c39e5581f901 333 ui8Status);
Piasiv1206 1:c39e5581f901 334 return(-1);
Piasiv1206 1:c39e5581f901 335 }
Piasiv1206 1:c39e5581f901 336 return(0);
Piasiv1206 1:c39e5581f901 337 }
Piasiv1206 1:c39e5581f901 338
mbed_official 0:f76c26307f9a 339
Piasiv1206 1:c39e5581f901 340
Piasiv1206 1:c39e5581f901 341 int main() {
Piasiv1206 1:c39e5581f901 342
Piasiv1206 1:c39e5581f901 343 g_ui32DownloadAddress = 0;
Piasiv1206 1:c39e5581f901 344 g_ui32StartAddress = 0xffffffff;
Piasiv1206 1:c39e5581f901 345 g_ui32DataSize = 8;
Piasiv1206 1:c39e5581f901 346 uint8_t ui8Command;
Piasiv1206 1:c39e5581f901 347
Piasiv1206 1:c39e5581f901 348
Piasiv1206 1:c39e5581f901 349 uint32_t ui32TransferLength;
Piasiv1206 1:c39e5581f901 350 uint8_t *pui8FileBuffer;
Piasiv1206 1:c39e5581f901 351 uint32_t ui32Offset;
Piasiv1206 1:c39e5581f901 352
Piasiv1206 1:c39e5581f901 353 g_pui8Buffer[0] = COMMAND_DOWNLOAD;
Piasiv1206 1:c39e5581f901 354 g_pui8Buffer[1] = (uint8_t)(g_ui32DownloadAddress >> 24);
Piasiv1206 1:c39e5581f901 355 g_pui8Buffer[2] = (uint8_t)(g_ui32DownloadAddress >> 16);
Piasiv1206 1:c39e5581f901 356 g_pui8Buffer[3] = (uint8_t)(g_ui32DownloadAddress >> 8);
Piasiv1206 1:c39e5581f901 357 g_pui8Buffer[4] = (uint8_t)g_ui32DownloadAddress;
Piasiv1206 1:c39e5581f901 358 g_pui8Buffer[5] = (uint8_t)(ui32TransferLength>>24);
Piasiv1206 1:c39e5581f901 359 g_pui8Buffer[6] = (uint8_t)(ui32TransferLength>>16);
Piasiv1206 1:c39e5581f901 360 g_pui8Buffer[7] = (uint8_t)(ui32TransferLength>>8);
Piasiv1206 1:c39e5581f901 361 g_pui8Buffer[8] = (uint8_t)ui32TransferLength;
Piasiv1206 1:c39e5581f901 362
Piasiv1206 1:c39e5581f901 363 ui8Command = COMMAND_PING;
Piasiv1206 1:c39e5581f901 364 if(SendCommand(&ui8Command, 1) < 0)
Piasiv1206 1:c39e5581f901 365 {
Piasiv1206 1:c39e5581f901 366 pc.printf("Ping fail");
Piasiv1206 1:c39e5581f901 367 return(-1);
Piasiv1206 1:c39e5581f901 368 }
Piasiv1206 1:c39e5581f901 369
Piasiv1206 1:c39e5581f901 370 if(SendCommand(g_pui8Buffer, 9) < 0)
Piasiv1206 1:c39e5581f901 371 {
Piasiv1206 1:c39e5581f901 372 printf("Failed to Send Download Command\n");
Piasiv1206 1:c39e5581f901 373 return(-1);
mbed_official 0:f76c26307f9a 374 }
Piasiv1206 1:c39e5581f901 375
Piasiv1206 1:c39e5581f901 376
Piasiv1206 1:c39e5581f901 377 ui32Offset = 0;
Piasiv1206 1:c39e5581f901 378
Piasiv1206 1:c39e5581f901 379 printf("Remaining Bytes: ");
Piasiv1206 1:c39e5581f901 380 do
Piasiv1206 1:c39e5581f901 381 {
Piasiv1206 1:c39e5581f901 382 uint8_t ui8BytesSent;
Piasiv1206 1:c39e5581f901 383
Piasiv1206 1:c39e5581f901 384 g_pui8Buffer[0] = COMMAND_SEND_DATA;
Piasiv1206 1:c39e5581f901 385
Piasiv1206 1:c39e5581f901 386 printf("%08ld", ui32TransferLength);
Piasiv1206 1:c39e5581f901 387
Piasiv1206 1:c39e5581f901 388 //
Piasiv1206 1:c39e5581f901 389 // Send out 8 bytes at a time to throttle download rate and avoid
Piasiv1206 1:c39e5581f901 390 // overruning the device since it is programming flash on the fly.
Piasiv1206 1:c39e5581f901 391 //
Piasiv1206 1:c39e5581f901 392 if(ui32TransferLength >= g_ui32DataSize)
Piasiv1206 1:c39e5581f901 393 {
Piasiv1206 1:c39e5581f901 394 memcpy(&g_pui8Buffer[1], &pui8FileBuffer[ui32Offset], g_ui32DataSize);
Piasiv1206 1:c39e5581f901 395
Piasiv1206 1:c39e5581f901 396 ui32Offset += g_ui32DataSize;
Piasiv1206 1:c39e5581f901 397 ui32TransferLength -= g_ui32DataSize;
Piasiv1206 1:c39e5581f901 398 ui8BytesSent = g_ui32DataSize + 1;
Piasiv1206 1:c39e5581f901 399 }
Piasiv1206 1:c39e5581f901 400 else
Piasiv1206 1:c39e5581f901 401 {
Piasiv1206 1:c39e5581f901 402 memcpy(&g_pui8Buffer[1], &pui8FileBuffer[ui32Offset], ui32TransferLength);
Piasiv1206 1:c39e5581f901 403 ui32Offset += ui32TransferLength;
Piasiv1206 1:c39e5581f901 404 ui8BytesSent = ui32TransferLength + 1;
Piasiv1206 1:c39e5581f901 405 ui32TransferLength = 0;
Piasiv1206 1:c39e5581f901 406 }
Piasiv1206 1:c39e5581f901 407 //
Piasiv1206 1:c39e5581f901 408 // Send the Send Data command to the device.
Piasiv1206 1:c39e5581f901 409 //
Piasiv1206 1:c39e5581f901 410 if(SendCommand(g_pui8Buffer, ui8BytesSent) < 0)
Piasiv1206 1:c39e5581f901 411 {
Piasiv1206 1:c39e5581f901 412 printf("Failed to Send Packet data\n");
Piasiv1206 1:c39e5581f901 413 break;
Piasiv1206 1:c39e5581f901 414 }
Piasiv1206 1:c39e5581f901 415
Piasiv1206 1:c39e5581f901 416 printf("\b\b\b\b\b\b\b\b");
Piasiv1206 1:c39e5581f901 417 } while (ui32TransferLength);
Piasiv1206 1:c39e5581f901 418 printf("00000000\n");
Piasiv1206 1:c39e5581f901 419
mbed_official 0:f76c26307f9a 420 }