Sameera Nawarathne / Mbed 2 deprecated EEPROM_MY

EEPRoM

Dependencies:   eeprom mbed

main.cpp@0:770fea48cb00, 2017-03-03 (annotated)

Committer:
sameera0824
Date:
Fri Mar 03 11:36:09 2017 +0000
Revision:
0:770fea48cb00
EEPROM example

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sameera0824 0:770fea48cb00 1 // Example
sameera0824 0:770fea48cb00 2
sameera0824 0:770fea48cb00 3 #include <string>
sameera0824 0:770fea48cb00 4
sameera0824 0:770fea48cb00 5 #include "mbed.h"
sameera0824 0:770fea48cb00 6 #include "eeprom.h"
sameera0824 0:770fea48cb00 7
sameera0824 0:770fea48cb00 8 #define EEPROM_ADDR 0x0 // I2c EEPROM address is 0x00
sameera0824 0:770fea48cb00 9
sameera0824 0:770fea48cb00 10 #define SDA p9 // I2C SDA pin
sameera0824 0:770fea48cb00 11 #define SCL p10 // I2C SCL pin
sameera0824 0:770fea48cb00 12
sameera0824 0:770fea48cb00 13 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
sameera0824 0:770fea48cb00 14 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
sameera0824 0:770fea48cb00 15
sameera0824 0:770fea48cb00 16 DigitalOut led2(LED2);
sameera0824 0:770fea48cb00 17
sameera0824 0:770fea48cb00 18 typedef struct _MyData {
sameera0824 0:770fea48cb00 19 int16_t sdata;
sameera0824 0:770fea48cb00 20 int32_t idata;
sameera0824 0:770fea48cb00 21 float fdata;
sameera0824 0:770fea48cb00 22 } MyData;
sameera0824 0:770fea48cb00 23
sameera0824 0:770fea48cb00 24 static void myerror(std::string msg)
sameera0824 0:770fea48cb00 25 {
sameera0824 0:770fea48cb00 26 printf("Error %s\n",msg.c_str());
sameera0824 0:770fea48cb00 27 exit(1);
sameera0824 0:770fea48cb00 28 }
sameera0824 0:770fea48cb00 29
sameera0824 0:770fea48cb00 30 void eeprom_test(void)
sameera0824 0:770fea48cb00 31 {
sameera0824 0:770fea48cb00 32 EEPROM ep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C64); // 24C64 eeprom with sda = p9 and scl = p10
sameera0824 0:770fea48cb00 33 uint8_t data[256],data_r[256];
sameera0824 0:770fea48cb00 34 int8_t ival;
sameera0824 0:770fea48cb00 35 uint16_t s;
sameera0824 0:770fea48cb00 36 int16_t sdata,sdata_r;
sameera0824 0:770fea48cb00 37 int32_t ldata[1024];
sameera0824 0:770fea48cb00 38 int32_t eeprom_size,max_size;
sameera0824 0:770fea48cb00 39 uint32_t addr;
sameera0824 0:770fea48cb00 40 int32_t idata,idata_r;
sameera0824 0:770fea48cb00 41 uint32_t i,j,k,l,t,id;
sameera0824 0:770fea48cb00 42 float fdata,fdata_r;
sameera0824 0:770fea48cb00 43 MyData md,md_r;
sameera0824 0:770fea48cb00 44
sameera0824 0:770fea48cb00 45 eeprom_size = ep.getSize();
sameera0824 0:770fea48cb00 46 max_size = MIN(eeprom_size,256);
sameera0824 0:770fea48cb00 47
sameera0824 0:770fea48cb00 48 printf("Test EEPROM I2C model %s of %d bytes\n\n",ep.getName(),eeprom_size);
sameera0824 0:770fea48cb00 49
sameera0824 0:770fea48cb00 50 // Test sequential read byte (max_size first bytes)
sameera0824 0:770fea48cb00 51 for(i = 0;i < max_size;i++) {
sameera0824 0:770fea48cb00 52 ep.read(i,ival);
sameera0824 0:770fea48cb00 53 data_r[i] = ival;
sameera0824 0:770fea48cb00 54 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 55 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 56 }
sameera0824 0:770fea48cb00 57
sameera0824 0:770fea48cb00 58 printf("Test sequential read %d first bytes :\n",max_size);
sameera0824 0:770fea48cb00 59 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 60 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 61 addr = i * 16 + j;
sameera0824 0:770fea48cb00 62 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 63 }
sameera0824 0:770fea48cb00 64 printf("\n");
sameera0824 0:770fea48cb00 65 }
sameera0824 0:770fea48cb00 66
sameera0824 0:770fea48cb00 67 // Test sequential read byte (max_size last bytes)
sameera0824 0:770fea48cb00 68 for(i = 0;i < max_size;i++) {
sameera0824 0:770fea48cb00 69 addr = eeprom_size - max_size + i;
sameera0824 0:770fea48cb00 70 ep.read(addr,ival);
sameera0824 0:770fea48cb00 71 data_r[i] = ival;
sameera0824 0:770fea48cb00 72 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 73 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 74 }
sameera0824 0:770fea48cb00 75
sameera0824 0:770fea48cb00 76 printf("\nTest sequential read %d last bytes :\n",max_size);
sameera0824 0:770fea48cb00 77 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 78 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 79 addr = i * 16 + j;
sameera0824 0:770fea48cb00 80 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 81 }
sameera0824 0:770fea48cb00 82 printf("\n");
sameera0824 0:770fea48cb00 83 }
sameera0824 0:770fea48cb00 84
sameera0824 0:770fea48cb00 85 // Test write byte (max_size first bytes)
sameera0824 0:770fea48cb00 86 for(i = 0;i < max_size;i++)
sameera0824 0:770fea48cb00 87 data[i] = i;
sameera0824 0:770fea48cb00 88
sameera0824 0:770fea48cb00 89 for(i = 0;i < max_size;i++) {
sameera0824 0:770fea48cb00 90 ep.write(i,(int8_t)data[i]);
sameera0824 0:770fea48cb00 91 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 92 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 93 }
sameera0824 0:770fea48cb00 94
sameera0824 0:770fea48cb00 95 // Test read byte (max_size first bytes)
sameera0824 0:770fea48cb00 96 for(i = 0;i < max_size;i++) {
sameera0824 0:770fea48cb00 97 ep.read(i,(int8_t&)ival);
sameera0824 0:770fea48cb00 98 data_r[i] = (uint8_t)ival;
sameera0824 0:770fea48cb00 99 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 100 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 101 }
sameera0824 0:770fea48cb00 102
sameera0824 0:770fea48cb00 103 printf("\nTest write and read %d first bytes :\n",max_size);
sameera0824 0:770fea48cb00 104 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 105 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 106 addr = i * 16 + j;
sameera0824 0:770fea48cb00 107 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 108 }
sameera0824 0:770fea48cb00 109 printf("\n");
sameera0824 0:770fea48cb00 110 }
sameera0824 0:770fea48cb00 111
sameera0824 0:770fea48cb00 112 // Test current address read byte (max_size first bytes)
sameera0824 0:770fea48cb00 113 ep.read((uint32_t)0,(int8_t&)ival); // current address is 0
sameera0824 0:770fea48cb00 114 data_r[0] = (uint8_t)ival;
sameera0824 0:770fea48cb00 115 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 116 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 117
sameera0824 0:770fea48cb00 118 for(i = 1;i < max_size;i++) {
sameera0824 0:770fea48cb00 119 ep.read((int8_t&)ival);
sameera0824 0:770fea48cb00 120 data_r[i] = (uint8_t)ival;
sameera0824 0:770fea48cb00 121 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 122 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 123 }
sameera0824 0:770fea48cb00 124
sameera0824 0:770fea48cb00 125 printf("\nTest current address read %d first bytes :\n",max_size);
sameera0824 0:770fea48cb00 126 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 127 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 128 addr = i * 16 + j;
sameera0824 0:770fea48cb00 129 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 130 }
sameera0824 0:770fea48cb00 131 printf("\n");
sameera0824 0:770fea48cb00 132 }
sameera0824 0:770fea48cb00 133
sameera0824 0:770fea48cb00 134 // Test sequential read byte (first max_size bytes)
sameera0824 0:770fea48cb00 135 ep.read((uint32_t)0,(int8_t *)data_r,(uint32_t) max_size);
sameera0824 0:770fea48cb00 136 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 137 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 138
sameera0824 0:770fea48cb00 139 printf("\nTest sequential read %d first bytes :\n",max_size);
sameera0824 0:770fea48cb00 140 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 141 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 142 addr = i * 16 + j;
sameera0824 0:770fea48cb00 143 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 144 }
sameera0824 0:770fea48cb00 145 printf("\n");
sameera0824 0:770fea48cb00 146 }
sameera0824 0:770fea48cb00 147
sameera0824 0:770fea48cb00 148 // Test write short, long, float
sameera0824 0:770fea48cb00 149 sdata = -15202;
sameera0824 0:770fea48cb00 150 addr = eeprom_size - 16;
sameera0824 0:770fea48cb00 151 ep.write(addr,(int16_t)sdata); // short write at address eeprom_size - 16
sameera0824 0:770fea48cb00 152 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 153 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 154
sameera0824 0:770fea48cb00 155 idata = 45123;
sameera0824 0:770fea48cb00 156 addr = eeprom_size - 12;
sameera0824 0:770fea48cb00 157 ep.write(addr,(int32_t)idata); // long write at address eeprom_size - 12
sameera0824 0:770fea48cb00 158 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 159 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 160
sameera0824 0:770fea48cb00 161 fdata = -12.26;
sameera0824 0:770fea48cb00 162 addr = eeprom_size - 8;
sameera0824 0:770fea48cb00 163 ep.write(addr,(float)fdata); // float write at address eeprom_size - 8
sameera0824 0:770fea48cb00 164 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 165 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 166
sameera0824 0:770fea48cb00 167 // Test read short, long, float
sameera0824 0:770fea48cb00 168 printf("\nTest write and read short (%d), long (%d), float (%f) :\n",
sameera0824 0:770fea48cb00 169 sdata,idata,fdata);
sameera0824 0:770fea48cb00 170
sameera0824 0:770fea48cb00 171 ep.read((uint32_t)(eeprom_size - 16),(int16_t&)sdata_r);
sameera0824 0:770fea48cb00 172 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 173 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 174 printf("sdata %d\n",sdata_r);
sameera0824 0:770fea48cb00 175
sameera0824 0:770fea48cb00 176 ep.read((uint32_t)(eeprom_size - 12),(int32_t&)idata_r);
sameera0824 0:770fea48cb00 177 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 178 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 179 printf("idata %d\n",idata_r);
sameera0824 0:770fea48cb00 180
sameera0824 0:770fea48cb00 181 ep.read((uint32_t)(eeprom_size - 8),fdata_r);
sameera0824 0:770fea48cb00 182 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 183 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 184 printf("fdata %f\n",fdata_r);
sameera0824 0:770fea48cb00 185
sameera0824 0:770fea48cb00 186 // Test read and write a structure
sameera0824 0:770fea48cb00 187 md.sdata = -15203;
sameera0824 0:770fea48cb00 188 md.idata = 45124;
sameera0824 0:770fea48cb00 189 md.fdata = -12.27;
sameera0824 0:770fea48cb00 190
sameera0824 0:770fea48cb00 191 ep.write((uint32_t)(eeprom_size - 32),(void *)&md,sizeof(md)); // write a structure eeprom_size - 32
sameera0824 0:770fea48cb00 192 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 193 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 194
sameera0824 0:770fea48cb00 195 printf("\nTest write and read a structure (%d %d %f) :\n",md.sdata,md.idata,md.fdata);
sameera0824 0:770fea48cb00 196
sameera0824 0:770fea48cb00 197 ep.read((uint32_t)(eeprom_size - 32),(void *)&md_r,sizeof(md_r));
sameera0824 0:770fea48cb00 198 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 199 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 200
sameera0824 0:770fea48cb00 201 printf("md.sdata %d\n",md_r.sdata);
sameera0824 0:770fea48cb00 202 printf("md.idata %d\n",md_r.idata);
sameera0824 0:770fea48cb00 203 printf("md.fdata %f\n",md_r.fdata);
sameera0824 0:770fea48cb00 204
sameera0824 0:770fea48cb00 205 // Test read and write of an array of the first max_size bytes
sameera0824 0:770fea48cb00 206 for(i = 0;i < max_size;i++)
sameera0824 0:770fea48cb00 207 data[i] = max_size - i - 1;
sameera0824 0:770fea48cb00 208
sameera0824 0:770fea48cb00 209 ep.write((uint32_t)(0),data,(uint32_t)max_size);
sameera0824 0:770fea48cb00 210 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 211 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 212
sameera0824 0:770fea48cb00 213 ep.read((uint32_t)(0),data_r,(uint32_t)max_size);
sameera0824 0:770fea48cb00 214 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 215 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 216
sameera0824 0:770fea48cb00 217 printf("\nTest write and read an array of the first %d bytes :\n",max_size);
sameera0824 0:770fea48cb00 218 for(i = 0;i < max_size/16;i++) {
sameera0824 0:770fea48cb00 219 for(j = 0;j < 16;j++) {
sameera0824 0:770fea48cb00 220 addr = i * 16 + j;
sameera0824 0:770fea48cb00 221 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:770fea48cb00 222 }
sameera0824 0:770fea48cb00 223 printf("\n");
sameera0824 0:770fea48cb00 224 }
sameera0824 0:770fea48cb00 225 printf("\n");
sameera0824 0:770fea48cb00 226
sameera0824 0:770fea48cb00 227 // Test write and read an array of int32
sameera0824 0:770fea48cb00 228 s = eeprom_size / 4; // size of eeprom in int32
sameera0824 0:770fea48cb00 229 int ldata_size = sizeof(ldata) / 4; // size of data array in int32
sameera0824 0:770fea48cb00 230 l = s / ldata_size; // loop index
sameera0824 0:770fea48cb00 231
sameera0824 0:770fea48cb00 232 // size of read / write in bytes
sameera0824 0:770fea48cb00 233 t = eeprom_size;
sameera0824 0:770fea48cb00 234 if(t > ldata_size * 4)
sameera0824 0:770fea48cb00 235 t = ldata_size * 4;
sameera0824 0:770fea48cb00 236
sameera0824 0:770fea48cb00 237 printf("Test write and read an array of %d int32 (write entire memory) :\n",t/4);
sameera0824 0:770fea48cb00 238
sameera0824 0:770fea48cb00 239 // Write entire eeprom
sameera0824 0:770fea48cb00 240 if(l) {
sameera0824 0:770fea48cb00 241 for(k = 0;k < l;k++) {
sameera0824 0:770fea48cb00 242 for(i = 0;i < ldata_size;i++)
sameera0824 0:770fea48cb00 243 ldata[i] = ldata_size * k + i;
sameera0824 0:770fea48cb00 244
sameera0824 0:770fea48cb00 245 addr = k * ldata_size * 4;
sameera0824 0:770fea48cb00 246 ep.write(addr,(void *)ldata,t);
sameera0824 0:770fea48cb00 247 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 248 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 249 }
sameera0824 0:770fea48cb00 250
sameera0824 0:770fea48cb00 251 printf("Write OK\n");
sameera0824 0:770fea48cb00 252
sameera0824 0:770fea48cb00 253 // Read entire eeprom
sameera0824 0:770fea48cb00 254 id = 0;
sameera0824 0:770fea48cb00 255 for(k = 0;k < l;k++) {
sameera0824 0:770fea48cb00 256 addr = k * ldata_size * 4;
sameera0824 0:770fea48cb00 257 ep.read(addr,(void *)ldata,t);
sameera0824 0:770fea48cb00 258 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 259 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 260
sameera0824 0:770fea48cb00 261 // format outputs with 8 words rows
sameera0824 0:770fea48cb00 262 for(i = 0;i < ldata_size / 8;i++) {
sameera0824 0:770fea48cb00 263 id++;
sameera0824 0:770fea48cb00 264 printf("%4d ",id);
sameera0824 0:770fea48cb00 265 for(j = 0;j < 8;j++) {
sameera0824 0:770fea48cb00 266 addr = i * 8 + j;
sameera0824 0:770fea48cb00 267 printf("%5d ",ldata[addr]);
sameera0824 0:770fea48cb00 268 }
sameera0824 0:770fea48cb00 269 printf("\n");
sameera0824 0:770fea48cb00 270 }
sameera0824 0:770fea48cb00 271 }
sameera0824 0:770fea48cb00 272 }
sameera0824 0:770fea48cb00 273 else {
sameera0824 0:770fea48cb00 274 for(i = 0;i < s;i++)
sameera0824 0:770fea48cb00 275 ldata[i] = i;
sameera0824 0:770fea48cb00 276
sameera0824 0:770fea48cb00 277 addr = 0;
sameera0824 0:770fea48cb00 278 ep.write(addr,(void *)ldata,t);
sameera0824 0:770fea48cb00 279 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 280 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 281
sameera0824 0:770fea48cb00 282 printf("Write OK\n");
sameera0824 0:770fea48cb00 283
sameera0824 0:770fea48cb00 284 // Read entire eeprom
sameera0824 0:770fea48cb00 285 id = 0;
sameera0824 0:770fea48cb00 286
sameera0824 0:770fea48cb00 287 addr = 0;
sameera0824 0:770fea48cb00 288 ep.read(addr,(void *)ldata,t);
sameera0824 0:770fea48cb00 289 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 290 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 291
sameera0824 0:770fea48cb00 292 // format outputs with 8 words rows
sameera0824 0:770fea48cb00 293 for(i = 0;i < s / 8;i++) {
sameera0824 0:770fea48cb00 294 id++;
sameera0824 0:770fea48cb00 295 printf("%4d ",id);
sameera0824 0:770fea48cb00 296 for(j = 0;j < 8;j++) {
sameera0824 0:770fea48cb00 297 addr = i * 8 + j;
sameera0824 0:770fea48cb00 298 printf("%5d ",ldata[addr]);
sameera0824 0:770fea48cb00 299 }
sameera0824 0:770fea48cb00 300 printf("\n");
sameera0824 0:770fea48cb00 301 }
sameera0824 0:770fea48cb00 302 }
sameera0824 0:770fea48cb00 303
sameera0824 0:770fea48cb00 304 // clear eeprom
sameera0824 0:770fea48cb00 305 printf("\nClear eeprom\n");
sameera0824 0:770fea48cb00 306
sameera0824 0:770fea48cb00 307 ep.clear();
sameera0824 0:770fea48cb00 308 if(ep.getError() != 0)
sameera0824 0:770fea48cb00 309 myerror(ep.getErrorMessage());
sameera0824 0:770fea48cb00 310
sameera0824 0:770fea48cb00 311 printf("End\n");
sameera0824 0:770fea48cb00 312
sameera0824 0:770fea48cb00 313 }
sameera0824 0:770fea48cb00 314
sameera0824 0:770fea48cb00 315 int main()
sameera0824 0:770fea48cb00 316 {
sameera0824 0:770fea48cb00 317
sameera0824 0:770fea48cb00 318 eeprom_test();
sameera0824 0:770fea48cb00 319
sameera0824 0:770fea48cb00 320 return(0);
sameera0824 0:770fea48cb00 321 }