Pradeep Kotipalli / Mbed 2 deprecated cdms_16thjune

hk

Dependencies:   mbed-rtos mbed

Fork of vr1_0CDMS_1_0 by Team Fox

i2c.cpp@6:1f8dbe33c66a, 2015-06-16 (annotated)

Committer:
pradeepvk2208
Date:
Tue Jun 16 16:37:37 2015 +0000
Revision:
6:1f8dbe33c66a
Parent:
3:0c3f7c3fabc9 
cdmshk

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cholletisaik777 0:d6e3d1e21484 1 #include "mbed.h"
cholletisaik777 0:d6e3d1e21484 2 //#include "pin_config.h"
cholletisaik777 0:d6e3d1e21484 3 #include "i2c.h"
cholletisaik777 0:d6e3d1e21484 4
cholletisaik777 0:d6e3d1e21484 5 Serial gc(USBTX,USBRX);
sakthipriya 3:0c3f7c3fabc9 6 InterruptIn irpt_4m_slv(D9); //I2c interrupt from CDMS
sakthipriya 3:0c3f7c3fabc9 7 DigitalOut irpt_2_slv(D8); //I2C interrupt to CDMS
sakthipriya 3:0c3f7c3fabc9 8 I2C master(D14,D15);
cholletisaik777 0:d6e3d1e21484 9
cholletisaik777 0:d6e3d1e21484 10
cholletisaik777 0:d6e3d1e21484 11
cholletisaik777 0:d6e3d1e21484 12 const int addr = 0x20; //slave address
cholletisaik777 0:d6e3d1e21484 13 Timer t;
cholletisaik777 0:d6e3d1e21484 14
cholletisaik777 0:d6e3d1e21484 15
cholletisaik777 0:d6e3d1e21484 16 void FCTN_I2C_READ(char *data, int length )
cholletisaik777 0:d6e3d1e21484 17 {
cholletisaik777 0:d6e3d1e21484 18 bool read_ack = true;
cholletisaik777 0:d6e3d1e21484 19 irpt_2_slv = 0;
cholletisaik777 0:d6e3d1e21484 20 t.start();
cholletisaik777 0:d6e3d1e21484 21 read_ack=master.read(addr|1,data,length);
cholletisaik777 0:d6e3d1e21484 22 t.stop();
cholletisaik777 0:d6e3d1e21484 23 if(read_ack == 0)
cholletisaik777 0:d6e3d1e21484 24 printf("\r\n\rData received from BAE is %s \r\n",data);
cholletisaik777 0:d6e3d1e21484 25 else
cholletisaik777 0:d6e3d1e21484 26 {
cholletisaik777 0:d6e3d1e21484 27 printf("\r\n \r data not received \r\n");
cholletisaik777 0:d6e3d1e21484 28 master.stop();
cholletisaik777 0:d6e3d1e21484 29 }
cholletisaik777 0:d6e3d1e21484 30 irpt_2_slv = 1;
cholletisaik777 0:d6e3d1e21484 31 printf("\r\n\r %d \r\n",t.read_us());
cholletisaik777 0:d6e3d1e21484 32 t.reset();
cholletisaik777 0:d6e3d1e21484 33 }
cholletisaik777 0:d6e3d1e21484 34
cholletisaik777 0:d6e3d1e21484 35 void FCTN_I2C_WRITE(char *data,int length)
cholletisaik777 0:d6e3d1e21484 36 {
cholletisaik777 0:d6e3d1e21484 37 bool write_ack = true;
cholletisaik777 0:d6e3d1e21484 38 irpt_2_slv = 0;
cholletisaik777 0:d6e3d1e21484 39 t.start();
cholletisaik777 0:d6e3d1e21484 40 write_ack=master.write(addr|0x00,data,length);
cholletisaik777 0:d6e3d1e21484 41 t.stop();
cholletisaik777 0:d6e3d1e21484 42 if(write_ack == 0)
cholletisaik777 0:d6e3d1e21484 43 printf("\r\n\rData sent to BAE is %s \r\n",data);
cholletisaik777 0:d6e3d1e21484 44 else
cholletisaik777 0:d6e3d1e21484 45 {
cholletisaik777 0:d6e3d1e21484 46 printf("\r\n\r data not sent \r\n");
cholletisaik777 0:d6e3d1e21484 47 master.stop();
cholletisaik777 0:d6e3d1e21484 48 }
cholletisaik777 0:d6e3d1e21484 49 irpt_2_slv = 1;
cholletisaik777 0:d6e3d1e21484 50 printf("\r\n\r %d \r\n",t.read_us());
cholletisaik777 0:d6e3d1e21484 51 t.reset();
cholletisaik777 0:d6e3d1e21484 52 }
cholletisaik777 0:d6e3d1e21484 53
cholletisaik777 0:d6e3d1e21484 54 bool check = 1;
cholletisaik777 0:d6e3d1e21484 55 void FCTN_MASTER_I2C(char i2c_data_type , char* i2c_data)
cholletisaik777 0:d6e3d1e21484 56 {
cholletisaik777 0:d6e3d1e21484 57 FCTN_I2C_WRITE(&i2c_data_type,1);
cholletisaik777 0:d6e3d1e21484 58 wait_ms(10);
cholletisaik777 0:d6e3d1e21484 59 switch(i2c_data_type)
cholletisaik777 0:d6e3d1e21484 60 {
cholletisaik777 0:d6e3d1e21484 61 case 's':
cholletisaik777 0:d6e3d1e21484 62 FCTN_I2C_WRITE(i2c_data,11);
cholletisaik777 0:d6e3d1e21484 63 break;
cholletisaik777 0:d6e3d1e21484 64
cholletisaik777 0:d6e3d1e21484 65 case 'l':
cholletisaik777 0:d6e3d1e21484 66 FCTN_I2C_WRITE(i2c_data,135);
cholletisaik777 0:d6e3d1e21484 67 break;
cholletisaik777 0:d6e3d1e21484 68
cholletisaik777 0:d6e3d1e21484 69 case 'h':
cholletisaik777 0:d6e3d1e21484 70 FCTN_I2C_READ(i2c_data,25);
cholletisaik777 0:d6e3d1e21484 71 break;
cholletisaik777 0:d6e3d1e21484 72
cholletisaik777 0:d6e3d1e21484 73 default:
cholletisaik777 0:d6e3d1e21484 74 printf("\r\n\r invalid command \r\n");
cholletisaik777 0:d6e3d1e21484 75 }
cholletisaik777 0:d6e3d1e21484 76 }