Digital Control System
/
Lab1_2
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Dependencies: mbed
Lab1_2.cpp@2:b514c679dba8, 2021-10-27 (annotated)
- Committer:
- duncan_120
- Date:
- Wed Oct 27 05:12:47 2021 +0000
- Revision:
- 2:b514c679dba8
- Parent:
- 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 | 1:2c4a65353203 | 18 | |
| 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 | 1:2c4a65353203 | 33 | |
| duncan_120 | 1:2c4a65353203 | 34 | InitializeTimer(); |
| duncan_120 | 1:2c4a65353203 | 35 | |
| duncan_120 | 1:2c4a65353203 | 36 | while(1){ |
| duncan_120 | 1:2c4a65353203 | 37 | //please write your code here |
| duncan_120 | 0:3fda85229347 | 38 | wait(1); |
| duncan_120 | 0:3fda85229347 | 39 | i++; |
| duncan_120 | 0:3fda85229347 | 40 | } |
| duncan_120 | 0:3fda85229347 | 41 | } |
| duncan_120 | 0:3fda85229347 | 42 | |
| duncan_120 | 0:3fda85229347 | 43 | void InitializeUart() |
| duncan_120 | 0:3fda85229347 | 44 | { |
| duncan_120 | 0:3fda85229347 | 45 | myled1= 1; |
| duncan_120 | 0:3fda85229347 | 46 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 47 | uart.baud(BAUD_RATE); |
| duncan_120 | 0:3fda85229347 | 48 | uart.attach(&UartReceiveInterrupt, Serial::RxIrq); |
| duncan_120 | 0:3fda85229347 | 49 | uart.printf("UART OK\r\n"); |
| duncan_120 | 0:3fda85229347 | 50 | } |
| duncan_120 | 0:3fda85229347 | 51 | |
| duncan_120 | 0:3fda85229347 | 52 | |
| duncan_120 | 0:3fda85229347 | 53 | void UartReceiveInterrupt() |
| duncan_120 | 0:3fda85229347 | 54 | { |
| duncan_120 | 0:3fda85229347 | 55 | while(uart.readable()) |
| duncan_120 | 0:3fda85229347 | 56 | { |
| duncan_120 | 0:3fda85229347 | 57 | // write your code here |
| duncan_120 | 0:3fda85229347 | 58 | if(uart.getc()) |
| duncan_120 | 0:3fda85229347 | 59 | { |
| duncan_120 | 0:3fda85229347 | 60 | uart.printf("This program runs %d seconds.\r\n",i); |
| duncan_120 | 1:2c4a65353203 | 61 | |
| duncan_120 | 0:3fda85229347 | 62 | } |
| duncan_120 | 0:3fda85229347 | 63 | } |
| duncan_120 | 0:3fda85229347 | 64 | } |
| duncan_120 | 0:3fda85229347 | 65 | |
| duncan_120 | 0:3fda85229347 | 66 | |
| duncan_120 | 0:3fda85229347 | 67 | |
| duncan_120 | 0:3fda85229347 | 68 | void InitializeTimer() |
| duncan_120 | 0:3fda85229347 | 69 | { |
| duncan_120 | 0:3fda85229347 | 70 | 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 | 71 | uart.printf("TIMER OK\r\n"); |
| duncan_120 | 0:3fda85229347 | 72 | myled1= 0; |
| duncan_120 | 0:3fda85229347 | 73 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 74 | } |
| duncan_120 | 0:3fda85229347 | 75 | |
| duncan_120 | 0:3fda85229347 | 76 | |
| duncan_120 | 0:3fda85229347 | 77 | void TimerInterrupt() |
| duncan_120 | 0:3fda85229347 | 78 | { |
| duncan_120 | 0:3fda85229347 | 79 | static int timer_count = 0; |
| duncan_120 | 0:3fda85229347 | 80 | // write your code here |
| duncan_120 | 0:3fda85229347 | 81 | if(timer_count == 500) |
| duncan_120 | 0:3fda85229347 | 82 | { |
| duncan_120 | 0:3fda85229347 | 83 | myled1= 1; //1暗 0亮 |
| duncan_120 | 0:3fda85229347 | 84 | myled2= 0; |
| duncan_120 | 0:3fda85229347 | 85 | timer_count++; |
| duncan_120 | 0:3fda85229347 | 86 | } |
| duncan_120 | 0:3fda85229347 | 87 | else if (timer_count == 2500) |
| duncan_120 | 0:3fda85229347 | 88 | { |
| duncan_120 | 0:3fda85229347 | 89 | myled1= 0; |
| duncan_120 | 0:3fda85229347 | 90 | myled2= 1; |
| duncan_120 | 0:3fda85229347 | 91 | timer_count = 0; |
| duncan_120 | 0:3fda85229347 | 92 | |
| duncan_120 | 0:3fda85229347 | 93 | } |
| duncan_120 | 0:3fda85229347 | 94 | else |
| duncan_120 | 0:3fda85229347 | 95 | { |
| duncan_120 | 0:3fda85229347 | 96 | timer_count++; |
| duncan_120 | 0:3fda85229347 | 97 | |
| duncan_120 | 0:3fda85229347 | 98 | } |
| duncan_120 | 0:3fda85229347 | 99 | } |