Gopal Nair
"Design MOD 10 Binary Counter ""Design a Embedded System Application using ST-Nucleo-F40, Which generates binary counting sequence on PTB port starting from 0 till 9. Each count incremented every 500msec. Four LEDs are connected on PTB Output port in active low configuration."
Revision 0:55964073973e, committed 2017-08-16
- Comitter:
- naray23
- Date:
- Wed Aug 16 10:57:17 2017 +0000
- Commit message:
- First Version
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Aug 16 10:57:17 2017 +0000
@@ -0,0 +1,86 @@
+#include "mbed.h"
+
+enum HW_State{RST,RUN};
+
+DigitalOut Reset(PTD4);
+BusIn Input(PTA12,PTA4,PTA5,PTC8);
+
+Serial pc(USBTX,USBRX);
+
+enum HW_State FRDM_State;
+int Program_State[3];
+unsigned char command;
+ char curr_state;
+ char prev_state;
+ Timer t;
+ int timer_ms;
+
+
+ void Check_error(char curr_state,char prev_state)
+{
+ if(((curr_state == 0) && ((prev_state == 0) || (prev_state == 9)) ||((prev_state+1) == curr_state))) //At Start or at Roll over
+ {
+ Program_State[0] = 0;
+ }
+ else
+ {
+ Program_State[0] = -1;
+ }
+}
+
+
+int main() {
+ Reset = 1;//Need to find what is the reset Methdology
+ FRDM_State=RST;
+ prev_state =0;
+ Input.mode(PullNone);
+
+ while(1) {
+ if(pc.readable())
+ {
+ command=pc.getc();
+ switch(command)
+ {
+ case 's':
+ case 'S': Reset =0;
+ FRDM_State=RUN;
+ t.start();
+ break;
+ case 'x':
+ case 'X': Reset =1;
+ FRDM_State=RST;
+ break;
+
+ }
+ }
+ if(FRDM_State == RUN)
+ {
+ curr_state=Input & Input.mask();
+ if(curr_state != prev_state)
+ {
+ t.stop();
+ timer_ms=t.read_ms();
+ t.reset();
+ t.start();
+ Check_error(curr_state,prev_state);
+ prev_state = curr_state;
+ if(( timer_ms> 494) && (timer_ms < 505))
+ {
+ Program_State[1] = 0;
+ }
+ else
+ {
+ Program_State[1] = -1;
+ }
+
+ if(curr_state == 0 && prev_state == 9)
+ {
+ pc.printf("%d,%d\n\r",Program_State[0],Program_State[1]);
+ }
+ }
+ }
+
+ }
+}
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Aug 16 10:57:17 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/fd96258d940d \ No newline at end of file