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Dependencies:   mbed

src/serial.cpp@30:d8721a46ee03, 2019-03-06 (annotated)

Committer:
Slord2142
Date:
Wed Mar 06 22:32:31 2019 +0000
Revision:
30:d8721a46ee03
Parent:
16:5791665200cb 
Removed extraneous comments from all files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfwic 0:44a3005d4f20 1 #include "mbed.h"
mfwic 0:44a3005d4f20 2 #include "serial.h"
mfwic 0:44a3005d4f20 3 #include "stdio.h"
mfwic 0:44a3005d4f20 4 #include "string.h"
mfwic 0:44a3005d4f20 5 #include "globals.h"
mfwic 1:9f8583ba2431 6 #include "all_io.h"
mfwic 0:44a3005d4f20 7
mfwic 0:44a3005d4f20 8 /************* GLOBAL VARIABLES *****************************/
mfwic 0:44a3005d4f20 9 struct serialStatusBits serialStatus;
mfwic 16:5791665200cb 10 char strbuf[150] = {0};
mfwic 0:44a3005d4f20 11 char rxbuf[MAXRXBUF+1] = {0};
mfwic 0:44a3005d4f20 12 volatile unsigned int bufloc = 0;
mfwic 0:44a3005d4f20 13
mfwic 0:44a3005d4f20 14 /************* FORWARD DECLARATIONS *************************/
mfwic 0:44a3005d4f20 15 void Rx_IRQHandler(void);
mfwic 0:44a3005d4f20 16
mfwic 0:44a3005d4f20 17
mfwic 0:44a3005d4f20 18 // set up serial port for 115200 baud
mfwic 7:860b3a8275cb 19 Serial dcm1(USBTX, USBRX, 921600);
mfwic 0:44a3005d4f20 20
mfwic 0:44a3005d4f20 21
mfwic 0:44a3005d4f20 22 // initialize the serial port variables
mfwic 0:44a3005d4f20 23 void initSerial(void)
mfwic 0:44a3005d4f20 24 {
mfwic 0:44a3005d4f20 25 // create the RxIRQ callback
mfwic 2:46faae84b8b0 26 dcm1.attach(&Rx_IRQHandler, Serial::RxIrq);
mfwic 0:44a3005d4f20 27
mfwic 0:44a3005d4f20 28 }
mfwic 0:44a3005d4f20 29
mfwic 0:44a3005d4f20 30
mfwic 0:44a3005d4f20 31 // this is the interrupt request handler (IRQ) for ALL Recoev interrupts
mfwic 0:44a3005d4f20 32 void Rx_IRQHandler(void)
mfwic 0:44a3005d4f20 33 {
mfwic 0:44a3005d4f20 34 // reinit the repeat flag
mfwic 0:44a3005d4f20 35 serialStatus.repeat = FALSE;
mfwic 0:44a3005d4f20 36
mfwic 0:44a3005d4f20 37 // check if the USART1 receive interrupt flag was set
mfwic 2:46faae84b8b0 38 while (dcm1.readable())
mfwic 0:44a3005d4f20 39 {
mfwic 2:46faae84b8b0 40 rxbuf[bufloc] = dcm1.getc();
mfwic 0:44a3005d4f20 41
mfwic 0:44a3005d4f20 42 if (rxbuf[bufloc] == CR) // check for end of command
mfwic 0:44a3005d4f20 43 {
mfwic 0:44a3005d4f20 44 serialStatus.command = TRUE;
mfwic 0:44a3005d4f20 45 rxbuf[bufloc] = 0;
mfwic 0:44a3005d4f20 46 bufloc = 0;
mfwic 0:44a3005d4f20 47 return;
mfwic 0:44a3005d4f20 48 }
mfwic 0:44a3005d4f20 49 else if (rxbuf[bufloc] == '$') // check for computer command
mfwic 0:44a3005d4f20 50 {
mfwic 0:44a3005d4f20 51 serialStatus.computer = TRUE;
mfwic 0:44a3005d4f20 52 bufloc = 0; // reset the buffer if computer command
mfwic 0:44a3005d4f20 53 }
mfwic 0:44a3005d4f20 54 else if (rxbuf[bufloc] == ')') // check for repeat command
mfwic 0:44a3005d4f20 55 {
mfwic 0:44a3005d4f20 56 serialStatus.repeat = TRUE;
mfwic 0:44a3005d4f20 57 rxbuf[bufloc] = 0;
mfwic 0:44a3005d4f20 58 }
mfwic 0:44a3005d4f20 59
mfwic 0:44a3005d4f20 60 // Echo character back out the serial port
mfwic 0:44a3005d4f20 61 if (!serialStatus.computer)
mfwic 0:44a3005d4f20 62 {
mfwic 2:46faae84b8b0 63 dcm1.putc((unsigned char)rxbuf[bufloc]);
mfwic 0:44a3005d4f20 64 }
mfwic 0:44a3005d4f20 65
mfwic 0:44a3005d4f20 66 // handle backspace
mfwic 0:44a3005d4f20 67 if (rxbuf[bufloc] != 0x08)
mfwic 0:44a3005d4f20 68 {
mfwic 0:44a3005d4f20 69 bufloc++; // increment the location
mfwic 0:44a3005d4f20 70 }
mfwic 0:44a3005d4f20 71 else
mfwic 0:44a3005d4f20 72 {
mfwic 0:44a3005d4f20 73 if (bufloc > 0)
mfwic 0:44a3005d4f20 74 {
mfwic 0:44a3005d4f20 75 rxbuf[--bufloc] = 0; // set to null
mfwic 0:44a3005d4f20 76 }
mfwic 0:44a3005d4f20 77 else
mfwic 0:44a3005d4f20 78 {
mfwic 0:44a3005d4f20 79 rxbuf[bufloc] = 0; // set to null
mfwic 0:44a3005d4f20 80 }
mfwic 0:44a3005d4f20 81 }
mfwic 0:44a3005d4f20 82
mfwic 0:44a3005d4f20 83 // check for overflow
mfwic 0:44a3005d4f20 84 if (bufloc >= MAXRXBUF)
mfwic 0:44a3005d4f20 85 {
mfwic 0:44a3005d4f20 86 bufloc = 0;
mfwic 0:44a3005d4f20 87 rxbuf[0] = 0;
mfwic 0:44a3005d4f20 88 }
mfwic 0:44a3005d4f20 89
Slord2142 30:d8721a46ee03 90
mfwic 0:44a3005d4f20 91 }
mfwic 0:44a3005d4f20 92 }
mfwic 0:44a3005d4f20 93
mfwic 0:44a3005d4f20 94
mfwic 0:44a3005d4f20 95
mfwic 1:9f8583ba2431 96 // send buffer to the serial port
mfwic 0:44a3005d4f20 97 void sendSerial(char *buf)
mfwic 0:44a3005d4f20 98 {
mfwic 2:46faae84b8b0 99 dcm1.printf(buf);
mfwic 0:44a3005d4f20 100 }
mfwic 0:44a3005d4f20 101
mfwic 1:9f8583ba2431 102 /************************************************************
mfwic 1:9f8583ba2431 103 * Routine: showRangeError
mfwic 1:9f8583ba2431 104 * Input: error -- 0 = in range, 1 = out of range
mfwic 1:9f8583ba2431 105 * Output: none
mfwic 1:9f8583ba2431 106 * Description:
mfwic 1:9f8583ba2431 107 * Sends a floating point number (value) over the serial port
mfwic 1:9f8583ba2431 108 * if it is being retrieved (GET)
mfwic 1:9f8583ba2431 109 *
mfwic 1:9f8583ba2431 110 **************************************************************/
mfwic 1:9f8583ba2431 111 void showRangeError(int intValue, int iBadValue, float fBadValue)
mfwic 1:9f8583ba2431 112 {
mfwic 12:fd1fd1857628 113 if (intValue){
mfwic 12:fd1fd1857628 114 sprintf(strbuf, " Out of Range: %d", iBadValue);
mfwic 12:fd1fd1857628 115 }else{
mfwic 12:fd1fd1857628 116 sprintf(strbuf, " Out of Range: %0.3f", fBadValue);
mfwic 12:fd1fd1857628 117 }
mfwic 1:9f8583ba2431 118
mfwic 1:9f8583ba2431 119 sendSerial(strbuf);
mfwic 1:9f8583ba2431 120 }
mfwic 0:44a3005d4f20 121