![](/media/cache/group/AET.jpg.50x50_q85.jpg)
Mjerenje napona - 03.11
Dependencies: mbed
Fork of VT1_Pervan by
main.cpp
- Committer:
- fpervan
- Date:
- 2016-11-17
- Revision:
- 6:4c46c5ba3aa3
- Parent:
- 5:0406c84a3d6f
- Child:
- 7:90c8a704c9f0
File content as of revision 6:4c46c5ba3aa3:
void SegInit(void); // function to initialise 7-seg displays void HostInit(void); // function to initialise the host terminal char GetKeyInput(void); // function to get a keyboard input from the terminal char SegConvert(char SegValue); // function to convert a number to a 7-segment byte #include "mbed.h" Serial pc(USBTX, USBRX); // comms to host PC BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12); // A,B,C,D,E,F,G,DP BusOut Seg2(p13,p14,p15,p16,p17,p18,p19,p20); // A,B,C,D,E,F,G,DP void SegInit(void); // function prototype void HostInit(void); // function prototype char GetKeyInput(void); // function prototype char SegConvert(char SegValue); // function prototype char data1, data2; // variable declarations int main() { // main program SegInit(); // call function to initialise the 7-seg displays HostInit(); // call function to initialise the host terminal while (1) { // infinite loop data2 = GetKeyInput(); // call function to get 1st key press Seg2=SegConvert(data2); // call function to convert and output data1 = GetKeyInput(); // call function to get 2nd key press Seg1=SegConvert(data1); // call function to convert and output pc.printf(" "); // display spaces between 2 digit numbers } } void SegInit(void) { Seg1=SegConvert(0); // initialise to zero Seg2=SegConvert(0); // initialise to zero } void HostInit(void) { pc.printf("\n\rType two digit numbers to be displayed on the 7-seg display\n\r"); } char GetKeyInput(void) { char c = pc.getc(); // get keyboard data (note num. ascii range 0x30-0x39) pc.printf("%c",c); // print ascii value to host PC terminal return (c&0x0F); // return value as non-ascii (bitmask c with value 0x0F) } char SegConvert(char SegValue) { // function 'SegConvert' char SegByte=0x00; switch (SegValue) { //DPGFEDCBA case 0 : SegByte = 0x3F;break; // 00111111 binary case 1 : SegByte = 0x06;break; // 00000110 binary case 2 : SegByte = 0x5B;break; // 01011011 binary case 3 : SegByte = 0x4F;break; // 01001111 binary case 4 : SegByte = 0x66;break; // 01100110 binary case 5 : SegByte = 0x6D;break; // 01101101 binary case 6 : SegByte = 0x7D;break; // 01111101 binary case 7 : SegByte = 0x07;break; // 00000111 binary case 8 : SegByte = 0x7F;break; // 01111111 binary case 9 : SegByte = 0x6F;break; // 01101111 binary } return SegByte; }