APS Lab / Mbed 2 deprecated xrocusOS_ADXL355

xrocusOS_ADXL355 version

Dependencies:   mbed SDFileSystem

common/UartReceiver.cpp@0:c347f602596d, 2019-04-20 (annotated)

Committer:
Inscape_ao
Date:
Sat Apr 20 09:23:39 2019 +0000
Revision:
0:c347f602596d
Child:
13:7cda5bef6390
create UartReceiver, CommandParser

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Inscape_ao 0:c347f602596d 1 #include "UartReceiver.h"
Inscape_ao 0:c347f602596d 2 #include "global.h"
Inscape_ao 0:c347f602596d 3
Inscape_ao 0:c347f602596d 4 void isrUartRx() {
Inscape_ao 0:c347f602596d 5 pUR->concat();
Inscape_ao 0:c347f602596d 6 }
Inscape_ao 0:c347f602596d 7
Inscape_ao 0:c347f602596d 8 /* Constructor(Accepted) */
Inscape_ao 0:c347f602596d 9 UartReceiver::UartReceiver(Serial *pSetUart)
Inscape_ao 0:c347f602596d 10 {
Inscape_ao 0:c347f602596d 11 nesthead = 0;
Inscape_ao 0:c347f602596d 12 nesttail = 0;
Inscape_ao 0:c347f602596d 13 tail = 0;
Inscape_ao 0:c347f602596d 14 head = 0;
Inscape_ao 0:c347f602596d 15 pUart = pSetUart;
Inscape_ao 0:c347f602596d 16 pLineHandler = NULL;
Inscape_ao 0:c347f602596d 17 }
Inscape_ao 0:c347f602596d 18
Inscape_ao 0:c347f602596d 19 /* Start Handling */
Inscape_ao 0:c347f602596d 20 void UartReceiver::run(void)
Inscape_ao 0:c347f602596d 21 {
Inscape_ao 0:c347f602596d 22 pUart->attach(isrUartRx, Serial::RxIrq);
Inscape_ao 0:c347f602596d 23 }
Inscape_ao 0:c347f602596d 24
Inscape_ao 0:c347f602596d 25 /* Stop Handling */
Inscape_ao 0:c347f602596d 26 void UartReceiver::stop(void)
Inscape_ao 0:c347f602596d 27 {
Inscape_ao 0:c347f602596d 28 pUart->attach(NULL, Serial::RxIrq);
Inscape_ao 0:c347f602596d 29 }
Inscape_ao 0:c347f602596d 30
Inscape_ao 0:c347f602596d 31 /* Update Line Handler Handling */
Inscape_ao 0:c347f602596d 32 void* UartReceiver::setLineHandler(void(*setLineHandler)(char*))
Inscape_ao 0:c347f602596d 33 {
Inscape_ao 0:c347f602596d 34 void(*prevLineHandler)(char*) = pLineHandler;
Inscape_ao 0:c347f602596d 35 pLineHandler = setLineHandler;
Inscape_ao 0:c347f602596d 36 return (void*)prevLineHandler;
Inscape_ao 0:c347f602596d 37 }
Inscape_ao 0:c347f602596d 38
Inscape_ao 0:c347f602596d 39 /* Export Fixed Buffer Pointer */
Inscape_ao 0:c347f602596d 40 char* UartReceiver::dequeue_str(void)
Inscape_ao 0:c347f602596d 41 {
Inscape_ao 0:c347f602596d 42 char *ret = NULL;
Inscape_ao 0:c347f602596d 43 if (nesthead != nesttail) {
Inscape_ao 0:c347f602596d 44 ret = &inner_buffer[nesthead][0];
Inscape_ao 0:c347f602596d 45 nesthead++;
Inscape_ao 0:c347f602596d 46 if (nesthead >= RXBUF_NEST) {
Inscape_ao 0:c347f602596d 47 nesthead = 0;
Inscape_ao 0:c347f602596d 48 }
Inscape_ao 0:c347f602596d 49 }
Inscape_ao 0:c347f602596d 50 return ret;
Inscape_ao 0:c347f602596d 51 }
Inscape_ao 0:c347f602596d 52
Inscape_ao 0:c347f602596d 53 /* Recv char from UART and Concat to Liquid Buffer */
Inscape_ao 0:c347f602596d 54 void UartReceiver::concat()
Inscape_ao 0:c347f602596d 55 {
Inscape_ao 0:c347f602596d 56 char ch;
Inscape_ao 0:c347f602596d 57 int fixed;
Inscape_ao 0:c347f602596d 58 /* connect all buffers */
Inscape_ao 0:c347f602596d 59 while (pUart->readable() != 0) {
Inscape_ao 0:c347f602596d 60 ch = pUart->getc();
Inscape_ao 0:c347f602596d 61 fixed = this->enqueue_ch(ch);
Inscape_ao 0:c347f602596d 62 if (fixed != BufOpen) {
Inscape_ao 0:c347f602596d 63 if (pLineHandler != NULL) {
Inscape_ao 0:c347f602596d 64 (this->pLineHandler)(this->dequeue_str());
Inscape_ao 0:c347f602596d 65 } else {
Inscape_ao 0:c347f602596d 66 pUart->printf("CALL DEF HANDLER:%s", this->dequeue_str());
Inscape_ao 0:c347f602596d 67 }
Inscape_ao 0:c347f602596d 68 }
Inscape_ao 0:c347f602596d 69 }
Inscape_ao 0:c347f602596d 70 }
Inscape_ao 0:c347f602596d 71
Inscape_ao 0:c347f602596d 72 /* Get Pointer */
Inscape_ao 0:c347f602596d 73 Serial *UartReceiver::getCurrentUart(void)
Inscape_ao 0:c347f602596d 74 {
Inscape_ao 0:c347f602596d 75 return this->pUart;
Inscape_ao 0:c347f602596d 76 }
Inscape_ao 0:c347f602596d 77
Inscape_ao 0:c347f602596d 78 /* Concat to Liquid Buffer */
Inscape_ao 0:c347f602596d 79 /** return UartReceiver::BufFixed, UartReceiver::BufOpen */
Inscape_ao 0:c347f602596d 80 int UartReceiver::enqueue_ch(char ch)
Inscape_ao 0:c347f602596d 81 {
Inscape_ao 0:c347f602596d 82 int ret = BufOpen;
Inscape_ao 0:c347f602596d 83 inner_buffer[nesttail][tail] = ch;
Inscape_ao 0:c347f602596d 84 if (ch == '\n' || ch == '\r') {
Inscape_ao 0:c347f602596d 85 /** switch buffer */
Inscape_ao 0:c347f602596d 86 inner_buffer[nesttail][tail] = '\0';
Inscape_ao 0:c347f602596d 87 nesttail++;
Inscape_ao 0:c347f602596d 88 tail = 0;
Inscape_ao 0:c347f602596d 89 if (nesttail >= RXBUF_NEST) {
Inscape_ao 0:c347f602596d 90 nesttail = 0;
Inscape_ao 0:c347f602596d 91 }
Inscape_ao 0:c347f602596d 92 ret = BufFixed;
Inscape_ao 0:c347f602596d 93 } else {
Inscape_ao 0:c347f602596d 94 tail++;
Inscape_ao 0:c347f602596d 95 if (tail >= RXBUF_SIZE) {
Inscape_ao 0:c347f602596d 96 /** -- stack overflow --- */
Inscape_ao 0:c347f602596d 97 /** IGNORED **/
Inscape_ao 0:c347f602596d 98 tail = RXBUF_SIZE - 1;
Inscape_ao 0:c347f602596d 99 }
Inscape_ao 0:c347f602596d 100 }
Inscape_ao 0:c347f602596d 101 return ret;
Inscape_ao 0:c347f602596d 102 }