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Dependencies:   mbed

Fork of Nucleo-getc by Cortex Challenge Team

main.cpp@4:472805b710a0, 2015-08-05 (annotated)

Committer:
mfwic
Date:
Wed Aug 05 23:03:52 2015 +0000
Revision:
4:472805b710a0
Parent:
3:e316c5e314e1 
Test publish for imported code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfwic 4:472805b710a0 1 //RK: User enters mulitple characters from keyboard terminated with Enter/Return.
mfwic 4:472805b710a0 2 //Only recognizes numbers. Limit of 10. Overrun caused negative results.
dousape2 1:4486f14a88ad 3 /**********************************************************************************
dousape2 1:4486f14a88ad 4 * @file main.cpp
dousape2 1:4486f14a88ad 5 * @author Petr Dousa
dousape2 1:4486f14a88ad 6 * @version V1.00
dousape2 1:4486f14a88ad 7 * @date 22-March-2015
Foxnec 3:e316c5e314e1 8 * @brief Every single second push to serial message and read from serial
mfwic 4:472805b710a0 9 * Serial speed is set to 9600.
dousape2 1:4486f14a88ad 10 ***********************************************************************************/
dousape2 1:4486f14a88ad 11
dousape2 1:4486f14a88ad 12 /* Includes ----------------------------------------------------------------------*/
dousape2 0:2a0d1131965d 13 #include "mbed.h"
dousape2 0:2a0d1131965d 14
dousape2 1:4486f14a88ad 15 /* Defines -----------------------------------------------------------------------*/
dousape2 1:4486f14a88ad 16 #define buffer_size 256 // incoming buffer size
dousape2 1:4486f14a88ad 17 #define buffer_fill buffer_size+1 // number, when buffer is ready
dousape2 1:4486f14a88ad 18
dousape2 1:4486f14a88ad 19 /* Function prototypes -----------------------------------------------------------*/
dousape2 1:4486f14a88ad 20 void serialRx();
dousape2 2:416bbbc23e82 21 int serialGetBuffer(char * & data);
dousape2 0:2a0d1131965d 22
dousape2 1:4486f14a88ad 23 /* Variables ---------------------------------------------------------------------*/
Foxnec 3:e316c5e314e1 24 // additional variables for incoming data
dousape2 1:4486f14a88ad 25 char serial_buffer[buffer_size]; // buffer to save incoming data
dousape2 1:4486f14a88ad 26 char serial_buffer2[buffer_size]; // second buffer to save incoming data
dousape2 1:4486f14a88ad 27 int serial_buffer_where=0; // index array for buffer
dousape2 1:4486f14a88ad 28 int serial_buffer2_where=0; // index array for second buffer
dousape2 1:4486f14a88ad 29 bool serial_end_line = false; // searching for end line
dousape2 1:4486f14a88ad 30
dousape2 1:4486f14a88ad 31 //mbed - initialization of peripherals
dousape2 0:2a0d1131965d 32 Serial pc(SERIAL_TX, SERIAL_RX);
dousape2 0:2a0d1131965d 33 DigitalOut myled(LED1);
dousape2 0:2a0d1131965d 34
dousape2 1:4486f14a88ad 35 /* Functions----------------------------------------------------------------------*/
dousape2 0:2a0d1131965d 36
dousape2 1:4486f14a88ad 37 /*******************************************************************************
dousape2 1:4486f14a88ad 38 * Function Name : serialRx.
dousape2 2:416bbbc23e82 39 * Description : Incoming interruption fom serial. Fill two buffers with
Foxnec 3:e316c5e314e1 40 * incoming data and prepare it to serialGetBuffer.
dousape2 1:4486f14a88ad 41 * Input : None.
dousape2 1:4486f14a88ad 42 * Output : None.
dousape2 1:4486f14a88ad 43 * Return : None.
dousape2 1:4486f14a88ad 44 *******************************************************************************/
dousape2 0:2a0d1131965d 45 void serialRx()
dousape2 0:2a0d1131965d 46 {
dousape2 1:4486f14a88ad 47 while(pc.readable()) { // read all data from serial
dousape2 1:4486f14a88ad 48 char character=pc.getc(); // get a char form serial
dousape2 1:4486f14a88ad 49 if(((int)character==10 || (int)character==13) && serial_end_line) { // search for end line /r or /n
Foxnec 3:e316c5e314e1 50 serial_end_line=true; // end was find in the previous charascter, skip
dousape2 0:2a0d1131965d 51 continue;
dousape2 1:4486f14a88ad 52 } else {
dousape2 1:4486f14a88ad 53 serial_end_line=false; // clear serial_end_line flag
dousape2 1:4486f14a88ad 54 }
Foxnec 3:e316c5e314e1 55 if(serial_buffer_where!=buffer_fill && !(serial_buffer2_where != 0 && serial_buffer2_where!=buffer_fill)) {
dousape2 0:2a0d1131965d 56 serial_buffer[serial_buffer_where++]=character;
Foxnec 3:e316c5e314e1 57 if(serial_buffer_where==buffer_size) { // check if incoming data are smaller than buffer size
dousape2 1:4486f14a88ad 58 serial_buffer[buffer_size-1]='\0'; // posibility to lost data, if the incoming data are too big
dousape2 1:4486f14a88ad 59 serial_buffer_where=buffer_fill; // set index array to indicate buffer fill
dousape2 2:416bbbc23e82 60 continue;
dousape2 0:2a0d1131965d 61 }
Foxnec 3:e316c5e314e1 62 if(character==13 || character==10) { // if end of line (\r \n) is indicated, prepare the buffer to serialGetBuffer
dousape2 1:4486f14a88ad 63 serial_buffer[serial_buffer_where-1]='\0'; // set end of buffer with 0
dousape2 1:4486f14a88ad 64 serial_buffer_where=buffer_fill; // set index array to indicate buffer fill
dousape2 1:4486f14a88ad 65 serial_end_line=true; // end of line was find, set serial_end_line flag
dousape2 0:2a0d1131965d 66 }
dousape2 1:4486f14a88ad 67 } else if(serial_buffer2_where!=buffer_fill) { // same for second buffer
dousape2 0:2a0d1131965d 68 serial_buffer2[serial_buffer2_where++]=character;
dousape2 0:2a0d1131965d 69 if(serial_buffer2_where==buffer_size) {
dousape2 0:2a0d1131965d 70 serial_buffer2[buffer_size-1]='\0';
dousape2 0:2a0d1131965d 71 serial_buffer2_where=buffer_fill;
dousape2 2:416bbbc23e82 72 continue;
dousape2 0:2a0d1131965d 73 }
dousape2 0:2a0d1131965d 74 if(character==13 || character==10) {
dousape2 0:2a0d1131965d 75 serial_buffer2[serial_buffer2_where-1]='\0';
dousape2 0:2a0d1131965d 76 serial_buffer2_where=buffer_fill;
dousape2 0:2a0d1131965d 77 serial_end_line=true;
dousape2 0:2a0d1131965d 78 }
Foxnec 3:e316c5e314e1 79 } /*else { // the buffers are full and thedata are lost
dousape2 0:2a0d1131965d 80 while(!pc.writeable());
dousape2 0:2a0d1131965d 81 pc.printf("Code is too slow!\n");
dousape2 1:4486f14a88ad 82 //pc.printf("I get: \"%c\", DEC: %d\n",character,(int)character);
dousape2 0:2a0d1131965d 83 }*/
dousape2 0:2a0d1131965d 84 }
dousape2 0:2a0d1131965d 85 }
dousape2 0:2a0d1131965d 86
dousape2 1:4486f14a88ad 87 /*******************************************************************************
dousape2 1:4486f14a88ad 88 * Function Name : serialGetBuffer.
dousape2 1:4486f14a88ad 89 * Description : Timer overflow handle. Blinks the LED.
dousape2 1:4486f14a88ad 90 * Input : Char array with size buffer_size.
dousape2 1:4486f14a88ad 91 * Output : Char array with incoming data.
dousape2 1:4486f14a88ad 92 * Return : 0 - on no data, 1 - one buffer is fill, 2 -two buffers are fill (posibility to lost data)
dousape2 1:4486f14a88ad 93 *******************************************************************************/
dousape2 2:416bbbc23e82 94 int serialGetBuffer(char * & data)
dousape2 0:2a0d1131965d 95 {
dousape2 0:2a0d1131965d 96 if(serial_buffer_where==buffer_fill && serial_buffer2_where==buffer_fill) {
dousape2 2:416bbbc23e82 97 data=serial_buffer;
dousape2 2:416bbbc23e82 98 //memcpy(data, serial_buffer, strlen(serial_buffer)+1);
dousape2 0:2a0d1131965d 99 serial_buffer_where=0;
dousape2 0:2a0d1131965d 100 return 2;
dousape2 0:2a0d1131965d 101 } else if(serial_buffer2_where==buffer_fill) {
dousape2 2:416bbbc23e82 102 data=serial_buffer2;
dousape2 2:416bbbc23e82 103 //memcpy(data, serial_buffer2, strlen(serial_buffer2)+1);
dousape2 0:2a0d1131965d 104 serial_buffer2_where=0;
dousape2 0:2a0d1131965d 105 return 1;
dousape2 0:2a0d1131965d 106 } else if(serial_buffer_where==buffer_fill) {
dousape2 2:416bbbc23e82 107 data=serial_buffer;
dousape2 2:416bbbc23e82 108 //memcpy(data, serial_buffer, strlen(serial_buffer)+1);
dousape2 0:2a0d1131965d 109 serial_buffer_where=0;
dousape2 0:2a0d1131965d 110 return 1;
dousape2 0:2a0d1131965d 111 } else {
dousape2 0:2a0d1131965d 112 return 0;
dousape2 0:2a0d1131965d 113 }
dousape2 0:2a0d1131965d 114 }
dousape2 0:2a0d1131965d 115
dousape2 1:4486f14a88ad 116 /***********************************************************************************
dousape2 1:4486f14a88ad 117 * Function Name : main.
dousape2 1:4486f14a88ad 118 * Description : Main routine.
dousape2 1:4486f14a88ad 119 * Input : None.
dousape2 1:4486f14a88ad 120 * Output : None.
dousape2 1:4486f14a88ad 121 * Return : None.
dousape2 1:4486f14a88ad 122 ***********************************************************************************/
dousape2 1:4486f14a88ad 123 int main()
dousape2 1:4486f14a88ad 124 {
dousape2 1:4486f14a88ad 125 int i = 1;
dousape2 1:4486f14a88ad 126 int j = 0;
dousape2 2:416bbbc23e82 127 int k = 0;
dousape2 1:4486f14a88ad 128
Foxnec 3:e316c5e314e1 129 //array for data that are coming to user
dousape2 2:416bbbc23e82 130 char * prijata_data;
dousape2 1:4486f14a88ad 131
mfwic 4:472805b710a0 132 pc.baud(9600); // set serial speed to 9600
Foxnec 3:e316c5e314e1 133 pc.attach(&serialRx,Serial::RxIrq); // attach serialRx to reception interrupt
mfwic 4:472805b710a0 134 //pc.attach(&serialRx);
mfwic 4:472805b710a0 135 pc.printf("Hello World !\r\n");
dousape2 1:4486f14a88ad 136
dousape2 1:4486f14a88ad 137 while(1) {
mfwic 4:472805b710a0 138 wait_ms(10); // wait 10 milliseconds
dousape2 1:4486f14a88ad 139 if(serialGetBuffer(prijata_data)) { // get char array from serial
dousape2 1:4486f14a88ad 140 sscanf (prijata_data,"%d",&j); // sscanf for searching integer
mfwic 4:472805b710a0 141 pc.printf("From PC:%d.\r\n" ,j); // write to serial incoming integer
dousape2 1:4486f14a88ad 142 }
dousape2 2:416bbbc23e82 143
dousape2 2:416bbbc23e82 144 k++;
dousape2 2:416bbbc23e82 145
mfwic 4:472805b710a0 146 if (k>=6000) { //print once per second
mfwic 4:472805b710a0 147 pc.printf("This program running for %d minutess.\r\n", i++); // write some string to serial
dousape2 2:416bbbc23e82 148
dousape2 2:416bbbc23e82 149 myled = !myled; // blink LED
dousape2 2:416bbbc23e82 150
dousape2 2:416bbbc23e82 151 k=0;
dousape2 2:416bbbc23e82 152 }
dousape2 1:4486f14a88ad 153 }
dousape2 1:4486f14a88ad 154 }
dousape2 1:4486f14a88ad 155