Digital Control System
/
Lab1_2
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Dependencies: mbed
Lab1_2.cpp@0:3fda85229347, 2021-10-25 (annotated)
- Committer:
- duncan_120
- Date:
- Mon Oct 25 09:35:55 2021 +0000
- Revision:
- 0:3fda85229347
- Child:
- 1:2c4a65353203
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| duncan_120 | 0:3fda85229347 | 1 | #include "mbed.h" |
| duncan_120 | 0:3fda85229347 | 2 | #define BAUD_RATE 115200 |
| duncan_120 | 0:3fda85229347 | 3 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 4 | //----------------- Hardware Declaration ------------------- |
| duncan_120 | 0:3fda85229347 | 5 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 6 | Serial uart(USBTX, USBRX); |
| duncan_120 | 0:3fda85229347 | 7 | DigitalOut myled1(A4); |
| duncan_120 | 0:3fda85229347 | 8 | DigitalOut myled2(A5); |
| duncan_120 | 0:3fda85229347 | 9 | Ticker timer; |
| duncan_120 | 0:3fda85229347 | 10 | |
| duncan_120 | 0:3fda85229347 | 11 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 12 | //--------------------- System variable ------------------------ |
| duncan_120 | 0:3fda85229347 | 13 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 14 | float blink_sec = 0.2; |
| duncan_120 | 0:3fda85229347 | 15 | const int kTimerMicroSecond = 1000; |
| duncan_120 | 0:3fda85229347 | 16 | |
| duncan_120 | 0:3fda85229347 | 17 | int i; |
| duncan_120 | 0:3fda85229347 | 18 | static int x=0; |
| duncan_120 | 0:3fda85229347 | 19 | |
| duncan_120 | 0:3fda85229347 | 20 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 21 | //--------------------- function zone ------------------------ |
| duncan_120 | 0:3fda85229347 | 22 | //---------------------------------------------------------------- |
| duncan_120 | 0:3fda85229347 | 23 | |
| duncan_120 | 0:3fda85229347 | 24 | void InitializeTimer(); |
| duncan_120 | 0:3fda85229347 | 25 | void InitializeUart(); |
| duncan_120 | 0:3fda85229347 | 26 | void UartReceiveInterrupt(); |
| duncan_120 | 0:3fda85229347 | 27 | void TimerInterrupt(); |
| duncan_120 | 0:3fda85229347 | 28 | |
| duncan_120 | 0:3fda85229347 | 29 | |
| duncan_120 | 0:3fda85229347 | 30 | int main() |
| duncan_120 | 0:3fda85229347 | 31 | { |
| duncan_120 | 0:3fda85229347 | 32 | InitializeUart(); |
| duncan_120 | 0:3fda85229347 | 33 | while(1) |
| duncan_120 | 0:3fda85229347 | 34 | { |
| duncan_120 | 0:3fda85229347 | 35 | if(x==1) { |
| duncan_120 | 0:3fda85229347 | 36 | InitializeTimer(); |
| duncan_120 | 0:3fda85229347 | 37 | x=0; |
| duncan_120 | 0:3fda85229347 | 38 | } |
| duncan_120 | 0:3fda85229347 | 39 | wait(1); |
| duncan_120 | 0:3fda85229347 | 40 | i++; |
| duncan_120 | 0:3fda85229347 | 41 | |
| duncan_120 | 0:3fda85229347 | 42 | |
| duncan_120 | 0:3fda85229347 | 43 | } |
| duncan_120 | 0:3fda85229347 | 44 | |
| duncan_120 | 0:3fda85229347 | 45 | } |
| duncan_120 | 0:3fda85229347 | 46 | |
| duncan_120 | 0:3fda85229347 | 47 | void InitializeUart() |
| duncan_120 | 0:3fda85229347 | 48 | { |
| duncan_120 | 0:3fda85229347 | 49 | myled1= 1; |
| duncan_120 | 0:3fda85229347 | 50 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 51 | uart.baud(BAUD_RATE); |
| duncan_120 | 0:3fda85229347 | 52 | uart.attach(&UartReceiveInterrupt, Serial::RxIrq); |
| duncan_120 | 0:3fda85229347 | 53 | uart.printf("UART OK\r\n"); |
| duncan_120 | 0:3fda85229347 | 54 | } |
| duncan_120 | 0:3fda85229347 | 55 | |
| duncan_120 | 0:3fda85229347 | 56 | |
| duncan_120 | 0:3fda85229347 | 57 | void UartReceiveInterrupt() |
| duncan_120 | 0:3fda85229347 | 58 | { |
| duncan_120 | 0:3fda85229347 | 59 | while(uart.readable()) |
| duncan_120 | 0:3fda85229347 | 60 | { |
| duncan_120 | 0:3fda85229347 | 61 | // write your code here |
| duncan_120 | 0:3fda85229347 | 62 | if(uart.getc()) |
| duncan_120 | 0:3fda85229347 | 63 | { |
| duncan_120 | 0:3fda85229347 | 64 | uart.printf("This program runs %d seconds.\r\n",i); |
| duncan_120 | 0:3fda85229347 | 65 | x=1; |
| duncan_120 | 0:3fda85229347 | 66 | } |
| duncan_120 | 0:3fda85229347 | 67 | } |
| duncan_120 | 0:3fda85229347 | 68 | } |
| duncan_120 | 0:3fda85229347 | 69 | |
| duncan_120 | 0:3fda85229347 | 70 | |
| duncan_120 | 0:3fda85229347 | 71 | |
| duncan_120 | 0:3fda85229347 | 72 | void InitializeTimer() |
| duncan_120 | 0:3fda85229347 | 73 | { |
| duncan_120 | 0:3fda85229347 | 74 | timer.attach_us(&TimerInterrupt, kTimerMicroSecond); // the address of the function to be attached (timer1_ITR) and the interval (1000 micro-seconds) |
| duncan_120 | 0:3fda85229347 | 75 | uart.printf("TIMER OK\r\n"); |
| duncan_120 | 0:3fda85229347 | 76 | myled1= 0; |
| duncan_120 | 0:3fda85229347 | 77 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 78 | } |
| duncan_120 | 0:3fda85229347 | 79 | |
| duncan_120 | 0:3fda85229347 | 80 | |
| duncan_120 | 0:3fda85229347 | 81 | void TimerInterrupt() |
| duncan_120 | 0:3fda85229347 | 82 | { |
| duncan_120 | 0:3fda85229347 | 83 | static int timer_count = 0; |
| duncan_120 | 0:3fda85229347 | 84 | // write your code here |
| duncan_120 | 0:3fda85229347 | 85 | if(timer_count == 500) |
| duncan_120 | 0:3fda85229347 | 86 | { |
| duncan_120 | 0:3fda85229347 | 87 | myled1= 1; //1暗 0亮 |
| duncan_120 | 0:3fda85229347 | 88 | myled2= 0; |
| duncan_120 | 0:3fda85229347 | 89 | timer_count++; |
| duncan_120 | 0:3fda85229347 | 90 | uart.printf("This program runs %d seconds.\r\n",i); |
| duncan_120 | 0:3fda85229347 | 91 | } |
| duncan_120 | 0:3fda85229347 | 92 | else if (timer_count == 2500) |
| duncan_120 | 0:3fda85229347 | 93 | { |
| duncan_120 | 0:3fda85229347 | 94 | myled1= 0; |
| duncan_120 | 0:3fda85229347 | 95 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 96 | timer_count = 0; |
| duncan_120 | 0:3fda85229347 | 97 | uart.printf("This program runs %d seconds.\r\n",i); |
| duncan_120 | 0:3fda85229347 | 98 | |
| duncan_120 | 0:3fda85229347 | 99 | } |
| duncan_120 | 0:3fda85229347 | 100 | else |
| duncan_120 | 0:3fda85229347 | 101 | { |
| duncan_120 | 0:3fda85229347 | 102 | timer_count++; |
| duncan_120 | 0:3fda85229347 | 103 | |
| duncan_120 | 0:3fda85229347 | 104 | } |
| duncan_120 | 0:3fda85229347 | 105 | } |