Sameera Nawarathne / Mbed 2 deprecated EEROM_1768

1768 EEPROM

Dependencies:   eeprom mbed

main.cpp@0:1f91042451ac, 2017-02-02 (annotated)

Committer:
sameera0824
Date:
Thu Feb 02 03:41:16 2017 +0000
Revision:
0:1f91042451ac
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sameera0824 0:1f91042451ac 1 // Example
sameera0824 0:1f91042451ac 2
sameera0824 0:1f91042451ac 3 #include <string>
sameera0824 0:1f91042451ac 4
sameera0824 0:1f91042451ac 5 #include "mbed.h"
sameera0824 0:1f91042451ac 6 #include "eeprom.h"
sameera0824 0:1f91042451ac 7
sameera0824 0:1f91042451ac 8 #define EEPROM_ADDR 0x0 // I2c EEPROM address is 0x00
sameera0824 0:1f91042451ac 9
sameera0824 0:1f91042451ac 10 #define SDA p9 // I2C SDA pin
sameera0824 0:1f91042451ac 11 #define SCL p10 // I2C SCL pin
sameera0824 0:1f91042451ac 12
sameera0824 0:1f91042451ac 13 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
sameera0824 0:1f91042451ac 14 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
sameera0824 0:1f91042451ac 15
sameera0824 0:1f91042451ac 16 DigitalOut led2(LED2);
sameera0824 0:1f91042451ac 17
sameera0824 0:1f91042451ac 18 typedef struct _MyData {
sameera0824 0:1f91042451ac 19 int16_t sdata;
sameera0824 0:1f91042451ac 20 int32_t idata;
sameera0824 0:1f91042451ac 21 float fdata;
sameera0824 0:1f91042451ac 22 } MyData;
sameera0824 0:1f91042451ac 23
sameera0824 0:1f91042451ac 24 static void myerror(std::string msg)
sameera0824 0:1f91042451ac 25 {
sameera0824 0:1f91042451ac 26 printf("Error %s\n",msg.c_str());
sameera0824 0:1f91042451ac 27 exit(1);
sameera0824 0:1f91042451ac 28 }
sameera0824 0:1f91042451ac 29
sameera0824 0:1f91042451ac 30 void eeprom_test(void)
sameera0824 0:1f91042451ac 31 {
sameera0824 0:1f91042451ac 32 EEPROM ep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C64); // 24C64 eeprom with sda = p9 and scl = p10
sameera0824 0:1f91042451ac 33 uint8_t data[256],data_r[256];
sameera0824 0:1f91042451ac 34 int8_t ival;
sameera0824 0:1f91042451ac 35 uint16_t s;
sameera0824 0:1f91042451ac 36 int16_t sdata,sdata_r;
sameera0824 0:1f91042451ac 37 int32_t ldata[1024];
sameera0824 0:1f91042451ac 38 int32_t eeprom_size,max_size;
sameera0824 0:1f91042451ac 39 uint32_t addr;
sameera0824 0:1f91042451ac 40 int32_t idata,idata_r;
sameera0824 0:1f91042451ac 41 uint32_t i,j,k,l,t,id;
sameera0824 0:1f91042451ac 42 float fdata,fdata_r;
sameera0824 0:1f91042451ac 43 MyData md,md_r;
sameera0824 0:1f91042451ac 44
sameera0824 0:1f91042451ac 45 eeprom_size = ep.getSize();
sameera0824 0:1f91042451ac 46 max_size = MIN(eeprom_size,256);
sameera0824 0:1f91042451ac 47
sameera0824 0:1f91042451ac 48 printf("Test EEPROM I2C model %s of %d bytes\n\n",ep.getName(),eeprom_size);
sameera0824 0:1f91042451ac 49
sameera0824 0:1f91042451ac 50 // Test sequential read byte (max_size first bytes)
sameera0824 0:1f91042451ac 51 for(i = 0;i < max_size;i++) {
sameera0824 0:1f91042451ac 52 ep.read(i,ival);
sameera0824 0:1f91042451ac 53 data_r[i] = ival;
sameera0824 0:1f91042451ac 54 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 55 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 56 }
sameera0824 0:1f91042451ac 57
sameera0824 0:1f91042451ac 58 printf("Test sequential read %d first bytes :\n",max_size);
sameera0824 0:1f91042451ac 59 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 60 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 61 addr = i * 16 + j;
sameera0824 0:1f91042451ac 62 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 63 }
sameera0824 0:1f91042451ac 64 printf("\n");
sameera0824 0:1f91042451ac 65 }
sameera0824 0:1f91042451ac 66
sameera0824 0:1f91042451ac 67 // Test sequential read byte (max_size last bytes)
sameera0824 0:1f91042451ac 68 for(i = 0;i < max_size;i++) {
sameera0824 0:1f91042451ac 69 addr = eeprom_size - max_size + i;
sameera0824 0:1f91042451ac 70 ep.read(addr,ival);
sameera0824 0:1f91042451ac 71 data_r[i] = ival;
sameera0824 0:1f91042451ac 72 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 73 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 74 }
sameera0824 0:1f91042451ac 75
sameera0824 0:1f91042451ac 76 printf("\nTest sequential read %d last bytes :\n",max_size);
sameera0824 0:1f91042451ac 77 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 78 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 79 addr = i * 16 + j;
sameera0824 0:1f91042451ac 80 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 81 }
sameera0824 0:1f91042451ac 82 printf("\n");
sameera0824 0:1f91042451ac 83 }
sameera0824 0:1f91042451ac 84
sameera0824 0:1f91042451ac 85 // Test write byte (max_size first bytes)
sameera0824 0:1f91042451ac 86 for(i = 0;i < max_size;i++)
sameera0824 0:1f91042451ac 87 data[i] = i;
sameera0824 0:1f91042451ac 88
sameera0824 0:1f91042451ac 89 for(i = 0;i < max_size;i++) {
sameera0824 0:1f91042451ac 90 ep.write(i,(int8_t)data[i]);
sameera0824 0:1f91042451ac 91 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 92 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 93 }
sameera0824 0:1f91042451ac 94
sameera0824 0:1f91042451ac 95 // Test read byte (max_size first bytes)
sameera0824 0:1f91042451ac 96 for(i = 0;i < max_size;i++) {
sameera0824 0:1f91042451ac 97 ep.read(i,(int8_t&)ival);
sameera0824 0:1f91042451ac 98 data_r[i] = (uint8_t)ival;
sameera0824 0:1f91042451ac 99 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 100 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 101 }
sameera0824 0:1f91042451ac 102
sameera0824 0:1f91042451ac 103 printf("\nTest write and read %d first bytes :\n",max_size);
sameera0824 0:1f91042451ac 104 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 105 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 106 addr = i * 16 + j;
sameera0824 0:1f91042451ac 107 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 108 }
sameera0824 0:1f91042451ac 109 printf("\n");
sameera0824 0:1f91042451ac 110 }
sameera0824 0:1f91042451ac 111
sameera0824 0:1f91042451ac 112 // Test current address read byte (max_size first bytes)
sameera0824 0:1f91042451ac 113 ep.read((uint32_t)0,(int8_t&)ival); // current address is 0
sameera0824 0:1f91042451ac 114 data_r[0] = (uint8_t)ival;
sameera0824 0:1f91042451ac 115 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 116 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 117
sameera0824 0:1f91042451ac 118 for(i = 1;i < max_size;i++) {
sameera0824 0:1f91042451ac 119 ep.read((int8_t&)ival);
sameera0824 0:1f91042451ac 120 data_r[i] = (uint8_t)ival;
sameera0824 0:1f91042451ac 121 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 122 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 123 }
sameera0824 0:1f91042451ac 124
sameera0824 0:1f91042451ac 125 printf("\nTest current address read %d first bytes :\n",max_size);
sameera0824 0:1f91042451ac 126 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 127 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 128 addr = i * 16 + j;
sameera0824 0:1f91042451ac 129 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 130 }
sameera0824 0:1f91042451ac 131 printf("\n");
sameera0824 0:1f91042451ac 132 }
sameera0824 0:1f91042451ac 133
sameera0824 0:1f91042451ac 134 // Test sequential read byte (first max_size bytes)
sameera0824 0:1f91042451ac 135 ep.read((uint32_t)0,(int8_t *)data_r,(uint32_t) max_size);
sameera0824 0:1f91042451ac 136 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 137 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 138
sameera0824 0:1f91042451ac 139 printf("\nTest sequential read %d first bytes :\n",max_size);
sameera0824 0:1f91042451ac 140 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 141 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 142 addr = i * 16 + j;
sameera0824 0:1f91042451ac 143 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 144 }
sameera0824 0:1f91042451ac 145 printf("\n");
sameera0824 0:1f91042451ac 146 }
sameera0824 0:1f91042451ac 147
sameera0824 0:1f91042451ac 148 // Test write short, long, float
sameera0824 0:1f91042451ac 149 sdata = -15202;
sameera0824 0:1f91042451ac 150 addr = eeprom_size - 16;
sameera0824 0:1f91042451ac 151 ep.write(addr,(int16_t)sdata); // short write at address eeprom_size - 16
sameera0824 0:1f91042451ac 152 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 153 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 154
sameera0824 0:1f91042451ac 155 idata = 45123;
sameera0824 0:1f91042451ac 156 addr = eeprom_size - 12;
sameera0824 0:1f91042451ac 157 ep.write(addr,(int32_t)idata); // long write at address eeprom_size - 12
sameera0824 0:1f91042451ac 158 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 159 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 160
sameera0824 0:1f91042451ac 161 fdata = -12.26;
sameera0824 0:1f91042451ac 162 addr = eeprom_size - 8;
sameera0824 0:1f91042451ac 163 ep.write(addr,(float)fdata); // float write at address eeprom_size - 8
sameera0824 0:1f91042451ac 164 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 165 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 166
sameera0824 0:1f91042451ac 167 // Test read short, long, float
sameera0824 0:1f91042451ac 168 printf("\nTest write and read short (%d), long (%d), float (%f) :\n",
sameera0824 0:1f91042451ac 169 sdata,idata,fdata);
sameera0824 0:1f91042451ac 170
sameera0824 0:1f91042451ac 171 ep.read((uint32_t)(eeprom_size - 16),(int16_t&)sdata_r);
sameera0824 0:1f91042451ac 172 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 173 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 174 printf("sdata %d\n",sdata_r);
sameera0824 0:1f91042451ac 175
sameera0824 0:1f91042451ac 176 ep.read((uint32_t)(eeprom_size - 12),(int32_t&)idata_r);
sameera0824 0:1f91042451ac 177 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 178 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 179 printf("idata %d\n",idata_r);
sameera0824 0:1f91042451ac 180
sameera0824 0:1f91042451ac 181 ep.read((uint32_t)(eeprom_size - 8),fdata_r);
sameera0824 0:1f91042451ac 182 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 183 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 184 printf("fdata %f\n",fdata_r);
sameera0824 0:1f91042451ac 185
sameera0824 0:1f91042451ac 186 // Test read and write a structure
sameera0824 0:1f91042451ac 187 md.sdata = -15203;
sameera0824 0:1f91042451ac 188 md.idata = 45124;
sameera0824 0:1f91042451ac 189 md.fdata = -12.27;
sameera0824 0:1f91042451ac 190
sameera0824 0:1f91042451ac 191 ep.write((uint32_t)(eeprom_size - 32),(void *)&md,sizeof(md)); // write a structure eeprom_size - 32
sameera0824 0:1f91042451ac 192 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 193 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 194
sameera0824 0:1f91042451ac 195 printf("\nTest write and read a structure (%d %d %f) :\n",md.sdata,md.idata,md.fdata);
sameera0824 0:1f91042451ac 196
sameera0824 0:1f91042451ac 197 ep.read((uint32_t)(eeprom_size - 32),(void *)&md_r,sizeof(md_r));
sameera0824 0:1f91042451ac 198 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 199 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 200
sameera0824 0:1f91042451ac 201 printf("md.sdata %d\n",md_r.sdata);
sameera0824 0:1f91042451ac 202 printf("md.idata %d\n",md_r.idata);
sameera0824 0:1f91042451ac 203 printf("md.fdata %f\n",md_r.fdata);
sameera0824 0:1f91042451ac 204
sameera0824 0:1f91042451ac 205 // Test read and write of an array of the first max_size bytes
sameera0824 0:1f91042451ac 206 for(i = 0;i < max_size;i++)
sameera0824 0:1f91042451ac 207 data[i] = max_size - i - 1;
sameera0824 0:1f91042451ac 208
sameera0824 0:1f91042451ac 209 ep.write((uint32_t)(0),data,(uint32_t)max_size);
sameera0824 0:1f91042451ac 210 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 211 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 212
sameera0824 0:1f91042451ac 213 ep.read((uint32_t)(0),data_r,(uint32_t)max_size);
sameera0824 0:1f91042451ac 214 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 215 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 216
sameera0824 0:1f91042451ac 217 printf("\nTest write and read an array of the first %d bytes :\n",max_size);
sameera0824 0:1f91042451ac 218 for(i = 0;i < max_size/16;i++) {
sameera0824 0:1f91042451ac 219 for(j = 0;j < 16;j++) {
sameera0824 0:1f91042451ac 220 addr = i * 16 + j;
sameera0824 0:1f91042451ac 221 printf("%3d ",(uint8_t)data_r[addr]);
sameera0824 0:1f91042451ac 222 }
sameera0824 0:1f91042451ac 223 printf("\n");
sameera0824 0:1f91042451ac 224 }
sameera0824 0:1f91042451ac 225 printf("\n");
sameera0824 0:1f91042451ac 226
sameera0824 0:1f91042451ac 227 // Test write and read an array of int32
sameera0824 0:1f91042451ac 228 s = eeprom_size / 4; // size of eeprom in int32
sameera0824 0:1f91042451ac 229 int ldata_size = sizeof(ldata) / 4; // size of data array in int32
sameera0824 0:1f91042451ac 230 l = s / ldata_size; // loop index
sameera0824 0:1f91042451ac 231
sameera0824 0:1f91042451ac 232 // size of read / write in bytes
sameera0824 0:1f91042451ac 233 t = eeprom_size;
sameera0824 0:1f91042451ac 234 if(t > ldata_size * 4)
sameera0824 0:1f91042451ac 235 t = ldata_size * 4;
sameera0824 0:1f91042451ac 236
sameera0824 0:1f91042451ac 237 printf("Test write and read an array of %d int32 (write entire memory) :\n",t/4);
sameera0824 0:1f91042451ac 238
sameera0824 0:1f91042451ac 239 // Write entire eeprom
sameera0824 0:1f91042451ac 240 if(l) {
sameera0824 0:1f91042451ac 241 for(k = 0;k < l;k++) {
sameera0824 0:1f91042451ac 242 for(i = 0;i < ldata_size;i++)
sameera0824 0:1f91042451ac 243 ldata[i] = ldata_size * k + i;
sameera0824 0:1f91042451ac 244
sameera0824 0:1f91042451ac 245 addr = k * ldata_size * 4;
sameera0824 0:1f91042451ac 246 ep.write(addr,(void *)ldata,t);
sameera0824 0:1f91042451ac 247 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 248 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 249 }
sameera0824 0:1f91042451ac 250
sameera0824 0:1f91042451ac 251 printf("Write OK\n");
sameera0824 0:1f91042451ac 252
sameera0824 0:1f91042451ac 253 // Read entire eeprom
sameera0824 0:1f91042451ac 254 id = 0;
sameera0824 0:1f91042451ac 255 for(k = 0;k < l;k++) {
sameera0824 0:1f91042451ac 256 addr = k * ldata_size * 4;
sameera0824 0:1f91042451ac 257 ep.read(addr,(void *)ldata,t);
sameera0824 0:1f91042451ac 258 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 259 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 260
sameera0824 0:1f91042451ac 261 // format outputs with 8 words rows
sameera0824 0:1f91042451ac 262 for(i = 0;i < ldata_size / 8;i++) {
sameera0824 0:1f91042451ac 263 id++;
sameera0824 0:1f91042451ac 264 printf("%4d ",id);
sameera0824 0:1f91042451ac 265 for(j = 0;j < 8;j++) {
sameera0824 0:1f91042451ac 266 addr = i * 8 + j;
sameera0824 0:1f91042451ac 267 printf("%5d ",ldata[addr]);
sameera0824 0:1f91042451ac 268 }
sameera0824 0:1f91042451ac 269 printf("\n");
sameera0824 0:1f91042451ac 270 }
sameera0824 0:1f91042451ac 271 }
sameera0824 0:1f91042451ac 272 }
sameera0824 0:1f91042451ac 273 else {
sameera0824 0:1f91042451ac 274 for(i = 0;i < s;i++)
sameera0824 0:1f91042451ac 275 ldata[i] = i;
sameera0824 0:1f91042451ac 276
sameera0824 0:1f91042451ac 277 addr = 0;
sameera0824 0:1f91042451ac 278 ep.write(addr,(void *)ldata,t);
sameera0824 0:1f91042451ac 279 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 280 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 281
sameera0824 0:1f91042451ac 282 printf("Write OK\n");
sameera0824 0:1f91042451ac 283
sameera0824 0:1f91042451ac 284 // Read entire eeprom
sameera0824 0:1f91042451ac 285 id = 0;
sameera0824 0:1f91042451ac 286
sameera0824 0:1f91042451ac 287 addr = 0;
sameera0824 0:1f91042451ac 288 ep.read(addr,(void *)ldata,t);
sameera0824 0:1f91042451ac 289 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 290 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 291
sameera0824 0:1f91042451ac 292 // format outputs with 8 words rows
sameera0824 0:1f91042451ac 293 for(i = 0;i < s / 8;i++) {
sameera0824 0:1f91042451ac 294 id++;
sameera0824 0:1f91042451ac 295 printf("%4d ",id);
sameera0824 0:1f91042451ac 296 for(j = 0;j < 8;j++) {
sameera0824 0:1f91042451ac 297 addr = i * 8 + j;
sameera0824 0:1f91042451ac 298 printf("%5d ",ldata[addr]);
sameera0824 0:1f91042451ac 299 }
sameera0824 0:1f91042451ac 300 printf("\n");
sameera0824 0:1f91042451ac 301 }
sameera0824 0:1f91042451ac 302 }
sameera0824 0:1f91042451ac 303
sameera0824 0:1f91042451ac 304 // clear eeprom
sameera0824 0:1f91042451ac 305 printf("\nClear eeprom\n");
sameera0824 0:1f91042451ac 306
sameera0824 0:1f91042451ac 307 ep.clear();
sameera0824 0:1f91042451ac 308 if(ep.getError() != 0)
sameera0824 0:1f91042451ac 309 myerror(ep.getErrorMessage());
sameera0824 0:1f91042451ac 310
sameera0824 0:1f91042451ac 311 printf("End\n");
sameera0824 0:1f91042451ac 312
sameera0824 0:1f91042451ac 313 }
sameera0824 0:1f91042451ac 314
sameera0824 0:1f91042451ac 315 int main()
sameera0824 0:1f91042451ac 316 {
sameera0824 0:1f91042451ac 317
sameera0824 0:1f91042451ac 318 eeprom_test();
sameera0824 0:1f91042451ac 319
sameera0824 0:1f91042451ac 320 return(0);
sameera0824 0:1f91042451ac 321 }
sameera0824 0:1f91042451ac 322
sameera0824 0:1f91042451ac 323