Chaitanya Vanapalli
hk thread working
Fork of
rtos_cdms_testing_trash
by 
Chaitanya Vanapalli
Revision 7:6b1a6941ac87, committed 2014-09-18
- Comitter:
- viswa_chaitanya
- Date:
- Thu Sep 18 10:32:43 2014 +0000
- Parent:
- 6:209f4db62daf
- Commit message:
- working code of cdms with i2c
Changed in this revision
--- a/main.cpp Tue Jun 04 16:01:32 2013 +0100
+++ b/main.cpp Thu Sep 18 10:32:43 2014 +0000
@@ -1,21 +1,103 @@
#include "mbed.h"
#include "rtos.h"
+#include "master.h"
+
+//#include "tmtc.h"
+//#include "science.h"
+//#include "hk.h"
-DigitalOut led1(LED1);
-DigitalOut led2(LED2);
+#define intmax 11999
+
+Thread* t_tmtc;
+Thread* t_science_store_sd;
+Thread* t_hk_store_sd;
+
+void t_tmtc_main(void const *args);
+void t_science_main(void const *args);
+void t_hk_main(void const *args);
+void scheduler(void const * args);
+
+Timer timer_main;
+int schedcount = 1;
+Mutex critical;
-void led2_thread(void const *args) {
+int main() {
+ Thread thread_tmtc(t_tmtc_main, NULL, osPriorityIdle);
+ t_tmtc = &thread_tmtc;
+ Thread thread_science(t_science_main, NULL, osPriorityLow);
+ t_science_store_sd = &thread_science;
+ Thread thread_hk(t_hk_main, NULL, osPriorityBelowNormal);
+ t_hk_store_sd = &thread_hk;
+
+ RtosTimer schedule(scheduler,osTimerPeriodic);
+ timer_main.start();
+ schedule.start(5000);
+ Thread::wait(osWaitForever);
+}
+
+void scheduler(void const * args)
+{
+ if(schedcount == intmax+1) //the value is reset at this value so as to ensure smooth flow, 65532 and 0 are divisible by 3 and 2.
+ {
+ schedcount =0;
+ }
+
+ if(schedcount%4==0)
+ {
+ printf("\nHK signal at %f\n",timer_main.read());
+ t_hk_store_sd->signal_set(0x01);
+ }
+
+ if(schedcount%3==0)
+ {
+ printf("\nScience signal at %f\n",timer_main.read());
+ t_science_store_sd->signal_set(0x01);
+ }
+
+ if(schedcount==5)
+ {
+ printf("\nTMTC signalled");
+ t_tmtc->signal_set(0x1);
+ }
+
+ schedcount++;
+}
+
+void t_science_main(void const *args) {
while (true) {
- led2 = !led2;
- Thread::wait(1000);
+ Thread::signal_wait(0x1);
+ critical.lock();
+ printf("science data aquisition started\n");
+ wait(3);
+ printf("science data acquisition ended\n");
+ t_hk_store_sd->signal_set(0x10);
+ critical.unlock();
+ wait(3);
+ printf("Science data written to SD card\n");
}
}
-
-int main() {
- Thread thread(led2_thread);
-
+
+void t_hk_main(void const *args) {
while (true) {
- led1 = !led1;
- Thread::wait(500);
+ Thread::signal_wait(0x1);
+ critical.lock();
+ printf("HK acquisition started\n");
+ FUNC_I2C_MASTER_MAIN('1',0x20,24 );
+ wait(2);
+ printf("HK acquisition ended\n");
+ critical.unlock();
+ wait(2);
+ printf("HK data written to SD card");
}
}
+
+void t_tmtc_main(void const *args) {
+ Thread::signal_wait(0x1);
+ critical.lock();
+ printf("tmtc started\n");
+ wait(5);
+ printf("tmtc ended\n");
+ critical.unlock();
+ wait(5);
+ printf("tmtc executed\n");
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/master.cpp Thu Sep 18 10:32:43 2014 +0000
@@ -0,0 +1,81 @@
+#include "master.h"
+
+I2C master (p28,p27); //configure pins p27,p28 as I2C master
+Serial pc (USBTX,USBRX);
+
+struct SensorData //HK_data_structure
+{
+ char voltage[10];
+ char current[10];
+ char temp[10];
+} Sensor;
+
+void FUNC_I2C_MASTER_MAIN(char command, int slave_address, int iterations)
+{
+ wait(0.5);
+ printf("1\n");
+ bool acknowledge1;
+ bool acknowledge2;
+ uint8_t loopvariable2=0;
+ bool loopvariable1 = true;
+ bool loopvariable3 = true;
+ while(loopvariable1)
+ {
+//-------------writing the command to slave--------------------------------------------------------------
+ printf("2\n");
+ master.frequency(100000); //set clock frequency
+ master.start(); //initiating the data transfer
+ acknowledge2 = (bool) master.write(slave_address|0x00); //addressing the slave to write
+ if(acknowledge2) //proceeding further only if slave is addressed
+ {
+ printf("3\n");
+ acknowledge1 = (bool) master.write(command); //sending the command to slave
+ if(acknowledge1) //proceeding further only if sent data is acknowledged
+ {
+ printf("acknowledge1=%d\n",acknowledge1);
+ loopvariable1=false; //if acknowledged, breaking loop in next iteration
+
+//--------------reading data from slave---------------------------------------------------------------
+ while(loopvariable3)
+ {
+ master.frequency(100000); //set clock frequency
+ master.start(); //initiate data transfer
+ acknowledge1 = (bool) master.write(slave_address | 0x01); //addressing the slave to read
+
+ if(acknowledge1) //proceedong only if slae is addressed
+ {
+ loopvariable3 = false;
+ while(loopvariable2<8)
+ {
+ Sensor.voltage[loopvariable2] = receive_byte(); //receiving data if acknowledged
+ printf(" voltage%d = %x\n",loopvariable2,Sensor.voltage[loopvariable2]);
+
+ Sensor.current[loopvariable2] = receive_byte(); //receiving data if acknowledged
+ printf(" current%d = %x\n",loopvariable2, Sensor.current[loopvariable2]);
+
+ Sensor.temp[loopvariable2] = receive_byte(); //receiving data if acknowledged
+ printf(" temperature%d = %x\n",loopvariable2,Sensor.temp[loopvariable2]);
+
+ loopvariable2++;
+
+ } //while(loopvariable2<30)
+ }//if(acknowledge1==1)
+
+ master.stop();
+ }//while(loopvariable3)
+ }//if(acknowledge1==1)
+ }//if(acknowledge2==1)
+ }//while(loopvariable1)
+ printf("done");
+}//main
+
+
+//----------------function to read and return the data received-----------------------------------
+char receive_byte()
+{
+
+ char value;
+ value = master.read(1);
+ return(value); //returning the 4 byte floating point number
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/master.h Thu Sep 18 10:32:43 2014 +0000 @@ -0,0 +1,10 @@ +#include "mbed.h" //library +#define get_hk_data '1' //sample telecommands +#define telecommand2 '2' +#define telecommand3 '3' +#define telecommand4 '4' +#define telecommand5 '5' + +const int addr = 0x20; //slave address +char receive_byte(); //funtion to receive float data +void FUNC_I2C_MASTER_MAIN(char command, int slave_address, int iterations); \ No newline at end of file
--- a/mbed-rtos.lib Tue Jun 04 16:01:32 2013 +0100 +++ b/mbed-rtos.lib Thu Sep 18 10:32:43 2014 +0000 @@ -1,1 +1,1 @@ -https://mbed.org/users/mbed_official/code/mbed-rtos/ \ No newline at end of file +https://mbed.org/users/mbed_official/code/mbed-rtos/#631c0f1008c3
--- a/mbed.bld Tue Jun 04 16:01:32 2013 +0100 +++ b/mbed.bld Thu Sep 18 10:32:43 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/ \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file