Sameera Nawarathne
1768 EEPROM
Revision 0:1f91042451ac, committed 2017-02-02
- Comitter:
- sameera0824
- Date:
- Thu Feb 02 03:41:16 2017 +0000
- Commit message:
- test
Changed in this revision
diff -r 000000000000 -r 1f91042451ac eeprom.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/eeprom.lib Thu Feb 02 03:41:16 2017 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/bborredon/code/eeprom/#925096a4c7f0
diff -r 000000000000 -r 1f91042451ac main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Feb 02 03:41:16 2017 +0000
@@ -0,0 +1,323 @@
+// Example
+
+#include <string>
+
+#include "mbed.h"
+#include "eeprom.h"
+
+#define EEPROM_ADDR 0x0 // I2c EEPROM address is 0x00
+
+#define SDA p9 // I2C SDA pin
+#define SCL p10 // I2C SCL pin
+
+#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
+#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
+
+DigitalOut led2(LED2);
+
+typedef struct _MyData {
+ int16_t sdata;
+ int32_t idata;
+ float fdata;
+ } MyData;
+
+static void myerror(std::string msg)
+{
+ printf("Error %s\n",msg.c_str());
+ exit(1);
+}
+
+void eeprom_test(void)
+{
+ EEPROM ep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C64); // 24C64 eeprom with sda = p9 and scl = p10
+ uint8_t data[256],data_r[256];
+ int8_t ival;
+ uint16_t s;
+ int16_t sdata,sdata_r;
+ int32_t ldata[1024];
+ int32_t eeprom_size,max_size;
+ uint32_t addr;
+ int32_t idata,idata_r;
+ uint32_t i,j,k,l,t,id;
+ float fdata,fdata_r;
+ MyData md,md_r;
+
+ eeprom_size = ep.getSize();
+ max_size = MIN(eeprom_size,256);
+
+ printf("Test EEPROM I2C model %s of %d bytes\n\n",ep.getName(),eeprom_size);
+
+ // Test sequential read byte (max_size first bytes)
+ for(i = 0;i < max_size;i++) {
+ ep.read(i,ival);
+ data_r[i] = ival;
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ printf("Test sequential read %d first bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+
+ // Test sequential read byte (max_size last bytes)
+ for(i = 0;i < max_size;i++) {
+ addr = eeprom_size - max_size + i;
+ ep.read(addr,ival);
+ data_r[i] = ival;
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ printf("\nTest sequential read %d last bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+
+ // Test write byte (max_size first bytes)
+ for(i = 0;i < max_size;i++)
+ data[i] = i;
+
+ for(i = 0;i < max_size;i++) {
+ ep.write(i,(int8_t)data[i]);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ // Test read byte (max_size first bytes)
+ for(i = 0;i < max_size;i++) {
+ ep.read(i,(int8_t&)ival);
+ data_r[i] = (uint8_t)ival;
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ printf("\nTest write and read %d first bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+
+ // Test current address read byte (max_size first bytes)
+ ep.read((uint32_t)0,(int8_t&)ival); // current address is 0
+ data_r[0] = (uint8_t)ival;
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ for(i = 1;i < max_size;i++) {
+ ep.read((int8_t&)ival);
+ data_r[i] = (uint8_t)ival;
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ printf("\nTest current address read %d first bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+
+ // Test sequential read byte (first max_size bytes)
+ ep.read((uint32_t)0,(int8_t *)data_r,(uint32_t) max_size);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("\nTest sequential read %d first bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+
+ // Test write short, long, float
+ sdata = -15202;
+ addr = eeprom_size - 16;
+ ep.write(addr,(int16_t)sdata); // short write at address eeprom_size - 16
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ idata = 45123;
+ addr = eeprom_size - 12;
+ ep.write(addr,(int32_t)idata); // long write at address eeprom_size - 12
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ fdata = -12.26;
+ addr = eeprom_size - 8;
+ ep.write(addr,(float)fdata); // float write at address eeprom_size - 8
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ // Test read short, long, float
+ printf("\nTest write and read short (%d), long (%d), float (%f) :\n",
+ sdata,idata,fdata);
+
+ ep.read((uint32_t)(eeprom_size - 16),(int16_t&)sdata_r);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ printf("sdata %d\n",sdata_r);
+
+ ep.read((uint32_t)(eeprom_size - 12),(int32_t&)idata_r);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ printf("idata %d\n",idata_r);
+
+ ep.read((uint32_t)(eeprom_size - 8),fdata_r);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ printf("fdata %f\n",fdata_r);
+
+ // Test read and write a structure
+ md.sdata = -15203;
+ md.idata = 45124;
+ md.fdata = -12.27;
+
+ ep.write((uint32_t)(eeprom_size - 32),(void *)&md,sizeof(md)); // write a structure eeprom_size - 32
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("\nTest write and read a structure (%d %d %f) :\n",md.sdata,md.idata,md.fdata);
+
+ ep.read((uint32_t)(eeprom_size - 32),(void *)&md_r,sizeof(md_r));
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("md.sdata %d\n",md_r.sdata);
+ printf("md.idata %d\n",md_r.idata);
+ printf("md.fdata %f\n",md_r.fdata);
+
+ // Test read and write of an array of the first max_size bytes
+ for(i = 0;i < max_size;i++)
+ data[i] = max_size - i - 1;
+
+ ep.write((uint32_t)(0),data,(uint32_t)max_size);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ ep.read((uint32_t)(0),data_r,(uint32_t)max_size);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("\nTest write and read an array of the first %d bytes :\n",max_size);
+ for(i = 0;i < max_size/16;i++) {
+ for(j = 0;j < 16;j++) {
+ addr = i * 16 + j;
+ printf("%3d ",(uint8_t)data_r[addr]);
+ }
+ printf("\n");
+ }
+ printf("\n");
+
+ // Test write and read an array of int32
+ s = eeprom_size / 4; // size of eeprom in int32
+ int ldata_size = sizeof(ldata) / 4; // size of data array in int32
+ l = s / ldata_size; // loop index
+
+ // size of read / write in bytes
+ t = eeprom_size;
+ if(t > ldata_size * 4)
+ t = ldata_size * 4;
+
+ printf("Test write and read an array of %d int32 (write entire memory) :\n",t/4);
+
+ // Write entire eeprom
+ if(l) {
+ for(k = 0;k < l;k++) {
+ for(i = 0;i < ldata_size;i++)
+ ldata[i] = ldata_size * k + i;
+
+ addr = k * ldata_size * 4;
+ ep.write(addr,(void *)ldata,t);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+ }
+
+ printf("Write OK\n");
+
+ // Read entire eeprom
+ id = 0;
+ for(k = 0;k < l;k++) {
+ addr = k * ldata_size * 4;
+ ep.read(addr,(void *)ldata,t);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ // format outputs with 8 words rows
+ for(i = 0;i < ldata_size / 8;i++) {
+ id++;
+ printf("%4d ",id);
+ for(j = 0;j < 8;j++) {
+ addr = i * 8 + j;
+ printf("%5d ",ldata[addr]);
+ }
+ printf("\n");
+ }
+ }
+ }
+ else {
+ for(i = 0;i < s;i++)
+ ldata[i] = i;
+
+ addr = 0;
+ ep.write(addr,(void *)ldata,t);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("Write OK\n");
+
+ // Read entire eeprom
+ id = 0;
+
+ addr = 0;
+ ep.read(addr,(void *)ldata,t);
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ // format outputs with 8 words rows
+ for(i = 0;i < s / 8;i++) {
+ id++;
+ printf("%4d ",id);
+ for(j = 0;j < 8;j++) {
+ addr = i * 8 + j;
+ printf("%5d ",ldata[addr]);
+ }
+ printf("\n");
+ }
+ }
+
+ // clear eeprom
+ printf("\nClear eeprom\n");
+
+ ep.clear();
+ if(ep.getError() != 0)
+ myerror(ep.getErrorMessage());
+
+ printf("End\n");
+
+}
+
+int main()
+{
+
+ eeprom_test();
+
+ return(0);
+}
+
+
diff -r 000000000000 -r 1f91042451ac mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Feb 02 03:41:16 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5 \ No newline at end of file