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cdms b4 check
Dependencies: SDFileSystem mbed-rtos mbed
Fork of CDMS_BAE_1 by
Diff: i2c.cpp
- Revision:
- 7:60e940b7a36b
- Child:
- 8:4acac3bf5e9b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/i2c.cpp Thu Feb 05 23:19:46 2015 +0000 @@ -0,0 +1,157 @@ +#include "mbed.h" +#include "rtos.h" +#include "i2c.h" +DigitalOut interrupt(D9); +const int addr = 0x20; //slave address +I2C master (D14,D15); //configure pins p27,p28 as I2C master +Serial pc (USBTX,USBRX); +//DigitalOut interrupt(D9); +//InterruptIn data_ready(D10); + +int reset; +Timer t; +Timer t1; +Timer t2; +Timer t3; + +typedef struct +{ + char data; // To avoid dynamic memory allocation + int length; +}i2c_data; + +//Mail<i2c_data,16> i2c_data_receive; +Mail<i2c_data,16> i2c_data_send; + +//Thread * ptr_t_i2c; +void FUNC_I2C_MASTER_FSLAVE(char * data,int length) +{ + + + bool ack0 =true; + + interrupt = 1; + t1.start(); + //wait_ms(20); + ack0 = master.read(addr|1,data,length); + t1.stop(); + + + if(!ack0) + { + printf("\n master has read %s from slave\n\r",data); + + } + //master.stop(); + + printf("\n%d\n\r",t1.read_us()); + t1.reset(); + storedata(data); + interrupt=0; + +} + +typedef struct { + char Voltage[9]; + char Current[5]; + char Temperature[2]; + char PanelTemperature[3];//read by the 4 thermistors on solar panels + char BatteryTemperature; //to be populated + char faultpoll; //polled faults + char faultir; //interrupted faults + char power_mode; //power modes + char AngularSpeed[3]; + char Bnewvalue[3]; + + //float magnetometer,gyro=>to be addes +} hk_data; +hk_data decode_data; + +/*void TC_DECODE(char *data_hk) //getting the structure back from hk data sent by bae +{ + for(int i=0;i<=7;i++) + { + decode_data.Voltage[i] = data_hk[i]; + decode_data.Voltage[8] = '\0'; + } + for(int i=0;i<=3;i++) + { + decode_data.Current[i] = data_hk[8+i]; + decode_data.Current[4] = '\0'; + } + decode_data.Temperature[0] = data_hk[12]; + decode_data.Temperature[1] = '\0'; + for(int i=0;i<=1;i++) + { + decode_data.PanelTemperature[i] = data_hk[13+i]; + decode_data.PanelTemperature[2] = '\0'; + } + decode_data.BatteryTemperature = data_hk[15]; + decode_data.faultpoll = data_hk[16]; + decode_data.faultir = data_hk[17]; + decode_data.power_mode = data_hk[18]; + for(int i=0;i<=1;i++) + { + decode_data.AngularSpeed[i] = data_hk[19+i]; + decode_data.AngularSpeed[2] = '\0'; + } + for(int i=0;i<=1;i++) + { + decode_data.Bnewvalue[i] = data_hk[21+i]; + decode_data.Bnewvalue[2] = '\0'; + } + printf("\n voltage %s\n\r",decode_data.Voltage); + printf("\n current %s\n\r",decode_data.Current); + printf("\n faultpoll %c\n\r",decode_data.faultpoll); +}*/ + + + +char writedata; +bool write2slave; +bool master_status_write; +void FUNC_MASTER_WRITE() +{ //wait(1); + write2slave=true; + + + + char data = pc.getc(); + interrupt = 1; + t.start(); + t3.start(); + wait_ms(20); + i2c_data * i2c_data_s = i2c_data_send.alloc(); + i2c_data_s->data = data; + i2c_data_s->length = 1; + i2c_data_send.put(i2c_data_s); + master_status_write = true; + + // interrupt = 1; + + osEvent evt = i2c_data_send.get(); + if (evt.status == osEventMail) + { + i2c_data *i2c_data_s = (i2c_data*)evt.value.p; + writedata = i2c_data_s -> data; + t.stop(); + //t3.start(); + master_status_write = (bool) master.write(addr|0x00,&writedata,1); + t3.stop(); + if(master_status_write==0) + { + printf("master has written %c to slave\n\r",writedata); + write2slave=false; + } + i2c_data_send.free(i2c_data_s); + printf("\n%d\n",t.read_us()); + t.reset(); + printf("\n%d\n",t3.read_us()); + t3.reset(); + } + interrupt = 0; +} + + + + \ No newline at end of file