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Dependencies:   mbed

src/serial.cpp@1:bc3509459a27, 2022-12-06 (annotated)

Committer:
Slord2142
Date:
Tue Dec 06 18:47:01 2022 +0000
Revision:
1:bc3509459a27
Parent:
0:b3410a1e9843 
Helix commit 1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Slord2142 0:b3410a1e9843 1 #include "mbed.h"
Slord2142 0:b3410a1e9843 2 #include "serial.h"
Slord2142 0:b3410a1e9843 3 #include "stdio.h"
Slord2142 0:b3410a1e9843 4 #include "string.h"
Slord2142 0:b3410a1e9843 5 #include "globals.h"
Slord2142 0:b3410a1e9843 6 #include "all_io.h"
Slord2142 0:b3410a1e9843 7
Slord2142 0:b3410a1e9843 8 /************* GLOBAL VARIABLES *****************************/
Slord2142 0:b3410a1e9843 9 struct serialStatusBits serialStatus;
Slord2142 0:b3410a1e9843 10 char strbuf[150] = {0};
Slord2142 0:b3410a1e9843 11 char rxbuf[MAXRXBUF+1] = {0};
Slord2142 0:b3410a1e9843 12 volatile unsigned int bufloc = 0;
Slord2142 0:b3410a1e9843 13
Slord2142 0:b3410a1e9843 14 /************* FORWARD DECLARATIONS *************************/
Slord2142 0:b3410a1e9843 15 void Rx_IRQHandler(void);
Slord2142 0:b3410a1e9843 16
Slord2142 0:b3410a1e9843 17
Slord2142 0:b3410a1e9843 18 // set up serial port for 115200 baud
Slord2142 1:bc3509459a27 19 Serial dcm1(USBTX, USBRX, 115200);
Slord2142 0:b3410a1e9843 20 //Serial dcm1(USBTX, USBRX, 921600);
Slord2142 1:bc3509459a27 21 //Serial dcm1(PA_2, PA_3, 921600);
Slord2142 0:b3410a1e9843 22
Slord2142 0:b3410a1e9843 23
Slord2142 0:b3410a1e9843 24 // initialize the serial port variables
Slord2142 0:b3410a1e9843 25 void initSerial(void)
Slord2142 0:b3410a1e9843 26 {
Slord2142 0:b3410a1e9843 27 // create the RxIRQ callback
Slord2142 0:b3410a1e9843 28 dcm1.attach(&Rx_IRQHandler, Serial::RxIrq);
Slord2142 0:b3410a1e9843 29
Slord2142 0:b3410a1e9843 30 }
Slord2142 0:b3410a1e9843 31
Slord2142 0:b3410a1e9843 32
Slord2142 0:b3410a1e9843 33 // this is the interrupt request handler (IRQ) for ALL Recoev interrupts
Slord2142 0:b3410a1e9843 34 void Rx_IRQHandler(void)
Slord2142 0:b3410a1e9843 35 {
Slord2142 0:b3410a1e9843 36 // reinit the repeat flag
Slord2142 0:b3410a1e9843 37 serialStatus.repeat = FALSE;
Slord2142 0:b3410a1e9843 38
Slord2142 0:b3410a1e9843 39 // check if the USART1 receive interrupt flag was set
Slord2142 0:b3410a1e9843 40 while (dcm1.readable())
Slord2142 0:b3410a1e9843 41 {
Slord2142 0:b3410a1e9843 42 //led_usb = 0;
Slord2142 0:b3410a1e9843 43 rxbuf[bufloc] = dcm1.getc();
Slord2142 0:b3410a1e9843 44
Slord2142 0:b3410a1e9843 45 if (rxbuf[bufloc] == CR) // check for end of command
Slord2142 0:b3410a1e9843 46 {
Slord2142 0:b3410a1e9843 47 serialStatus.command = TRUE;
Slord2142 0:b3410a1e9843 48 rxbuf[bufloc] = 0;
Slord2142 0:b3410a1e9843 49 bufloc = 0;
Slord2142 0:b3410a1e9843 50 return;
Slord2142 0:b3410a1e9843 51 }
Slord2142 0:b3410a1e9843 52 else if (rxbuf[bufloc] == '$') // check for computer command
Slord2142 0:b3410a1e9843 53 {
Slord2142 0:b3410a1e9843 54 serialStatus.computer = TRUE;
Slord2142 0:b3410a1e9843 55 bufloc = 0; // reset the buffer if computer command
Slord2142 0:b3410a1e9843 56 }
Slord2142 0:b3410a1e9843 57 else if (rxbuf[bufloc] == ')') // check for repeat command
Slord2142 0:b3410a1e9843 58 {
Slord2142 0:b3410a1e9843 59 serialStatus.repeat = TRUE;
Slord2142 0:b3410a1e9843 60 rxbuf[bufloc] = 0;
Slord2142 0:b3410a1e9843 61 }
Slord2142 0:b3410a1e9843 62
Slord2142 0:b3410a1e9843 63 // Echo character back out the serial port
Slord2142 0:b3410a1e9843 64 if (!serialStatus.computer)
Slord2142 0:b3410a1e9843 65 {
Slord2142 0:b3410a1e9843 66 dcm1.putc((unsigned char)rxbuf[bufloc]);
Slord2142 0:b3410a1e9843 67 }
Slord2142 0:b3410a1e9843 68
Slord2142 0:b3410a1e9843 69 // handle backspace
Slord2142 0:b3410a1e9843 70 if (rxbuf[bufloc] != 0x08)
Slord2142 0:b3410a1e9843 71 {
Slord2142 0:b3410a1e9843 72 bufloc++; // increment the location
Slord2142 0:b3410a1e9843 73 }
Slord2142 0:b3410a1e9843 74 else
Slord2142 0:b3410a1e9843 75 {
Slord2142 0:b3410a1e9843 76 if (bufloc > 0)
Slord2142 0:b3410a1e9843 77 {
Slord2142 0:b3410a1e9843 78 rxbuf[--bufloc] = 0; // set to null
Slord2142 0:b3410a1e9843 79 }
Slord2142 0:b3410a1e9843 80 else
Slord2142 0:b3410a1e9843 81 {
Slord2142 0:b3410a1e9843 82 rxbuf[bufloc] = 0; // set to null
Slord2142 0:b3410a1e9843 83 }
Slord2142 0:b3410a1e9843 84 }
Slord2142 0:b3410a1e9843 85
Slord2142 0:b3410a1e9843 86 // check for overflow
Slord2142 0:b3410a1e9843 87 if (bufloc >= MAXRXBUF)
Slord2142 0:b3410a1e9843 88 {
Slord2142 0:b3410a1e9843 89 bufloc = 0;
Slord2142 0:b3410a1e9843 90 rxbuf[0] = 0;
Slord2142 0:b3410a1e9843 91 }
Slord2142 0:b3410a1e9843 92
Slord2142 0:b3410a1e9843 93 //led_usb = 1;
Slord2142 0:b3410a1e9843 94 }
Slord2142 0:b3410a1e9843 95 }
Slord2142 0:b3410a1e9843 96
Slord2142 0:b3410a1e9843 97
Slord2142 0:b3410a1e9843 98 // sends carriage return and linefeed and prompt character
Slord2142 0:b3410a1e9843 99 /*
Slord2142 0:b3410a1e9843 100 void sendCRLF(void)
Slord2142 0:b3410a1e9843 101 {
Slord2142 0:b3410a1e9843 102 char strMenu[30] ={0};
Slord2142 0:b3410a1e9843 103
Slord2142 0:b3410a1e9843 104 menu_type = MENU_DCM1;
Slord2142 0:b3410a1e9843 105
Slord2142 0:b3410a1e9843 106 switch(menuType)
Slord2142 0:b3410a1e9843 107 {
Slord2142 0:b3410a1e9843 108 case MENU_DCM1: strcpy(strMenu,"DCM1"); break;
Slord2142 0:b3410a1e9843 109 case MENU_DIFFERENTIAL: strcpy(strMenu,"DIFF"); break;
Slord2142 0:b3410a1e9843 110 case MENU_SINGLE: strcpy(strMenu,"SINGLE"); break;
Slord2142 0:b3410a1e9843 111 case MENU_DUAL: strcpy(strMenu,"DUAL"); break;
Slord2142 0:b3410a1e9843 112 case MENU_INVERT: strcpy(strMenu,"INVERT"); break;
Slord2142 0:b3410a1e9843 113 case MENU_SETTINGS: strcpy(strMenu,"SET"); break;
Slord2142 0:b3410a1e9843 114 case MENU_SETTINGS_CHAN1: strcpy(strMenu,"SET CHAN1"); break;
Slord2142 0:b3410a1e9843 115 case MENU_SETTINGS_CHAN2: strcpy(strMenu,"SET CHAN2"); break;
Slord2142 0:b3410a1e9843 116 case MENU_SETTINGS_CLOCK: strcpy(strMenu,"SET CLOCK"); break;
Slord2142 0:b3410a1e9843 117 case MENU_CALIBRATE: strcpy(strMenu,"CAL"); break;
Slord2142 0:b3410a1e9843 118 case MENU_TEST: strcpy(strMenu,"TEST"); break;
Slord2142 0:b3410a1e9843 119 case MENU_MAIN: strcpy(strMenu,"MAIN"); break;
Slord2142 0:b3410a1e9843 120 default: strcpy(strMenu,"UNDF"); break;
Slord2142 0:b3410a1e9843 121 }
Slord2142 0:b3410a1e9843 122
Slord2142 0:b3410a1e9843 123 // append the CR,LF and the ready character
Slord2142 0:b3410a1e9843 124 if(serialStatus.computer)
Slord2142 0:b3410a1e9843 125 {
Slord2142 0:b3410a1e9843 126 sendSerial("\r");
Slord2142 0:b3410a1e9843 127 }
Slord2142 0:b3410a1e9843 128 else
Slord2142 0:b3410a1e9843 129 {
Slord2142 0:b3410a1e9843 130 // adds a carrot so you know you are talking in terminal
Slord2142 0:b3410a1e9843 131 sprintf(strbuf,"\n\r%s>",strMenu);
Slord2142 0:b3410a1e9843 132 sendSerial(strbuf);
Slord2142 0:b3410a1e9843 133 // sendSerial("\n\r>");
Slord2142 0:b3410a1e9843 134 }
Slord2142 0:b3410a1e9843 135 }*/
Slord2142 0:b3410a1e9843 136
Slord2142 0:b3410a1e9843 137 // send buffer to the serial port
Slord2142 0:b3410a1e9843 138 void sendSerial(char *buf)
Slord2142 0:b3410a1e9843 139 {
Slord2142 0:b3410a1e9843 140 //led_usb = 0;
Slord2142 0:b3410a1e9843 141 dcm1.printf(buf);
Slord2142 0:b3410a1e9843 142 //led_usb = 1;
Slord2142 0:b3410a1e9843 143 }
Slord2142 0:b3410a1e9843 144
Slord2142 0:b3410a1e9843 145 /************************************************************
Slord2142 0:b3410a1e9843 146 * Routine: showRangeError
Slord2142 0:b3410a1e9843 147 * Input: error -- 0 = in range, 1 = out of range
Slord2142 0:b3410a1e9843 148 * Output: none
Slord2142 0:b3410a1e9843 149 * Description:
Slord2142 0:b3410a1e9843 150 * Sends a floating point number (value) over the serial port
Slord2142 0:b3410a1e9843 151 * if it is being retrieved (GET)
Slord2142 0:b3410a1e9843 152 *
Slord2142 0:b3410a1e9843 153 **************************************************************/
Slord2142 0:b3410a1e9843 154 void showRangeError(int intValue, int iBadValue, float fBadValue)
Slord2142 0:b3410a1e9843 155 {
Slord2142 0:b3410a1e9843 156 if (intValue){
Slord2142 0:b3410a1e9843 157 sprintf(strbuf, " Out of Range: %d", iBadValue);
Slord2142 0:b3410a1e9843 158 }else{
Slord2142 0:b3410a1e9843 159 sprintf(strbuf, " Out of Range: %0.3f", fBadValue);
Slord2142 0:b3410a1e9843 160 }
Slord2142 0:b3410a1e9843 161
Slord2142 0:b3410a1e9843 162 sendSerial(strbuf);
Slord2142 0:b3410a1e9843 163 }
Slord2142 0:b3410a1e9843 164