Diff: main.cpp

Revision:

0:e2acb437847f

Child:

1:541e44bb5f9b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Jan 20 17:57:59 2015 +0000
@@ -0,0 +1,77 @@
+#include "mbed.h"       
+I2CSlave slave(D14,D15);                       //configuring pins p27, p28 as I2Cslave
+Serial pc (USBTX,USBRX);
+InterruptIn master_intrpt(D9);
+ 
+DigitalOut slave_intrpt(D10);
+ 
+int ack0 = 1;
+int ack1 = 1;                               //read/write mode for i2c 0 : write2slave, 1 : write2master
+
+
+char writedata;
+char readdata;
+ 
+void FUNC_I2C_WRITE2CDMS()
+{
+        
+            slave.address(0x20);
+            while(ack0==1)
+            {       
+            if(slave.receive()==1)
+            {
+                ack0=slave.write(&writedata,1);
+               
+                
+            }
+            else if(slave.receive()==3 || slave.receive()==2)
+            {
+                ack1=slave.read(&readdata,1);
+            }
+            }
+            if(!ack0 )
+           {
+                printf("slave has written %c to slave\n\r",writedata);
+                    //printf("\n \r %d %d %d %d %d\n",*data_reg,*status_reg,*c1_reg,*c2_reg,*freq_reg);
+           }
+            else
+            {
+            printf("\n\r data not written to slave \n");
+            }
+             if(!ack1 )
+           {
+                printf("slave has read %c to master \n \r",writedata);
+                    //printf("\n \r %d %d %d %d %d\n",*data_reg,*status_reg,*c1_reg,*c2_reg,*freq_reg);
+           }
+            else
+            {
+            printf("\n\r data not read from master \n");
+            }
+}
+
+        
+void FUNC_INT()
+{
+
+    FUNC_I2C_WRITE2CDMS();
+    slave_intrpt = 0;   
+}
+ 
+
+
+ 
+ 
+int main()
+{   
+    printf("\n slave started\n\r");
+    
+    master_intrpt.rise(&FUNC_INT);
+    while(1)
+    {
+    writedata = pc.getc();
+    slave_intrpt=1;
+                
+    }
+     
+}
+ 
\ No newline at end of file