Sameera Nawarathne
memory read and write
Revision 0:af6898dbc5ab, committed 2017-02-07
- Comitter:
- sameera0824
- Date:
- Tue Feb 07 14:08:37 2017 +0000
- Commit message:
- eep read and write
Changed in this revision
diff -r 000000000000 -r af6898dbc5ab eeprom.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/eeprom.lib Tue Feb 07 14:08:37 2017 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/bborredon/code/eeprom/#925096a4c7f0
diff -r 000000000000 -r af6898dbc5ab main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Feb 07 14:08:37 2017 +0000
@@ -0,0 +1,261 @@
+#include "mbed.h"
+#include <string>
+#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))
+
+#define MB_ID 0x00
+#define NO_OF_DEV 0x01
+#define DEV_1_ID 0x02
+#define DEV_1_ST 0x03
+#define DEV_1_VAL 0x04
+#define DEV_2_ID 0x05
+#define DEV_2_ST 0x06
+#define DEV_2_VAL 0x07
+#define DEV_3_ID 0x08
+#define DEV_3_VAL 0x09
+#define DEV_4_ID 0x0A
+#define DEV_4_ST 0x0B
+#define DEV_4_VAL 0x0C
+
+int mb_ID = 0x00;
+int NOno_of_dev = 0x00;
+int dev_1_id = 0x00;
+int dev_1_st = 0x00;
+int dev_1_val = 0x00;
+int dev_2_id = 0x00;
+int dev_2_st = 0x00;
+int dev_2_val = 0x00;
+int dev_3_id = 0x00;
+int dev_3_st = 0x00;
+int dev_3_val = 0x00;
+int dev_4_id = 0x00;
+int dev_5_st = 0x00;
+int dev_6_val = 0x00;
+
+
+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);
+//}
+
+int ID_Map(int8_t id)
+{
+ int return_val =0;
+
+ if (id == 0x01) //ethernet
+ return_val=DEV_1_ID;
+
+ else if (id == 0x02) //CAN
+ return_val=DEV_2_ID;
+
+ else if (id ==0x03) //tem
+ return_val=DEV_3_ID;
+
+ else if (id == 0x04) //aceslometer
+ return_val=DEV_3_ID;
+
+ else
+ return_val= -1;
+
+ return return_val;
+ }
+
+bool healthWrite( int8_t id, int8_t status, int8_t val)
+ {
+ EEPROM eep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C128); // 24C64 eeprom with sda = p9 and scl = p10
+ int8_t add = ID_Map(id);
+ bool return_val = false;
+ if (add == 0)
+ {
+ printf("\r\n EEPROM not working..!!!");
+ return_val = false;
+ }
+ else if (add == -1)
+ {
+ printf("\r\n Wrong Memory address..!!!");
+ return_val = false;
+ }
+ else
+ {
+
+ eep.write(add,id);
+ if(eep.getError() != 0)
+ return_val = false;
+ else
+ return_val = true;
+
+ eep.write(add+1,status);
+ if(eep.getError() != 0)
+ return_val = false;
+ else
+ return_val = true;
+
+ eep.write(add+2,val);
+ if(eep.getError() != 0)
+ return_val = false;
+ else
+ return_val = true;
+ }
+
+ //printf("\r\n Memory \r\n");
+ //printf("\r\n %3d \r\n",i);
+ //printf("\r\n Value is \r\n");
+ //printf("\r\n %3d \r\n",ival);
+
+ return return_val;
+ }
+
+int healthReadStatus( int8_t id)
+{
+ EEPROM eep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C128); // 24C64 eeprom with sda = p9 and scl = p10
+ int8_t add = ID_Map(id);
+ int return_val = -1;
+ int8_t Status;
+ if (add == 0)
+ {
+ printf("\r\n EEPROM not working..!!!");
+ return_val = -1;
+ }
+ else if (add == -1)
+ {
+ printf("\r\n Wrong Memory address..!!!");
+ return_val = -1;
+ }
+ else
+ {
+ eep.read(add+1,Status);
+ if (eep.getError() != 0)
+ return_val = -1;
+
+ else return_val=Status;
+ }
+ return return_val;
+
+ }
+ int healthReadValue( int8_t id)
+{
+ EEPROM eep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C128); // 24C64 eeprom with sda = p9 and scl = p10
+ int8_t add = ID_Map(id);
+ int8_t val;
+ int8_t return_val = -1;
+ if (add == 0)
+ {
+ printf("\r\n EEPROM not working..!!!");
+ return_val = -1;
+ }
+ else if (add == -1)
+ {
+ printf("\r\n Wrong Memory address request..!!!");
+ return_val = -1;
+ }
+ else
+ {
+ eep.read(add+2,val);
+ if(eep.getError() != 0)
+ return_val = -1;
+
+ else
+ return_val = val;
+
+ }
+ return return_val;
+}
+
+int main() {
+ EEPROM eep(SDA,SCL,EEPROM_ADDR,EEPROM::T24C128); // 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 max_size,eeprom_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 = eep.getSize();
+ max_size = MIN(eeprom_size,256);
+
+ printf("\r\n Test EEPROM I2C model %s of %d bytes\r\n",eep.getName(),eeprom_size);
+
+ int8_t id =0x02;
+
+ //healthWrite( int8_t id, int8_t status, int8_t val)
+ bool helthW = healthWrite( id ,0x01, 0x05);
+
+ if (helthW == true)
+ {
+ printf("\r\n helth write successfull \r\n");
+ }
+ else
+ {
+ printf("\r\n helth write NOT successfull\r\n");
+ }
+///////////////////////////////////////////////////////////////////////
+ int helthRS = healthReadStatus(id);
+
+ if (helthRS == -1)
+ {
+ printf("\r\n helth read NOT successfull...!!! \r\n");
+ }
+ else
+ {
+ printf("\r\n device %X Status %X \r\n",id,helthRS);
+ }
+/////////////////////////////////////////////////////////////////////
+ int helthRV = healthReadValue(id);
+ if (helthRV == -1)
+ {
+ printf("\r\n helth read NOT successfull...!!! \r\n");
+ }
+ else
+ {
+ printf("\r\n device %X Value %X \r\n",id, helthRV);
+ }
+//////////////////////////////////////////////////////////////////
+//
+// i=2;
+//
+// eep.read(i,ival);
+// if(eep.getError() != 0)
+// myerror(eep.getErrorMessage());
+//
+// printf("\r\n Memory \r\n");
+// printf("\r\n %3d \r\n",i);
+// printf("\r\n Value is \r\n");
+// printf("\r\n %3d \r\n",ival);
+//
+// ival = 3;
+//
+// eep.write(i,ival);
+// if(eep.getError() != 0)
+// myerror(eep.getErrorMessage());
+//
+// printf("\r\n Memory \r\n");
+// printf("\r\n %3d \r\n",i);
+// printf("\r\n Value is \r\n");
+// printf("\r\n %3d \r\n",ival);
+
+
+ while(1) {
+
+ }
+}
diff -r 000000000000 -r af6898dbc5ab mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Feb 07 14:08:37 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/176b8275d35d \ No newline at end of file