Diff: common/UartReceiver.cpp

Revision:

0:c347f602596d

Child:

13:7cda5bef6390

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/common/UartReceiver.cpp	Sat Apr 20 09:23:39 2019 +0000
@@ -0,0 +1,102 @@
+#include "UartReceiver.h"
+#include "global.h"
+
+void isrUartRx() {
+    pUR->concat();
+}
+
+/* Constructor(Accepted) */
+UartReceiver::UartReceiver(Serial *pSetUart)
+{
+    nesthead = 0;
+    nesttail = 0;
+    tail = 0;
+    head = 0;
+    pUart = pSetUart;
+    pLineHandler = NULL;
+}
+
+/* Start Handling */
+void UartReceiver::run(void)
+{
+    pUart->attach(isrUartRx, Serial::RxIrq);
+}
+
+/* Stop Handling */
+void UartReceiver::stop(void)
+{
+    pUart->attach(NULL, Serial::RxIrq);
+}
+
+/* Update Line Handler Handling */
+void* UartReceiver::setLineHandler(void(*setLineHandler)(char*))
+{
+    void(*prevLineHandler)(char*) = pLineHandler;
+    pLineHandler = setLineHandler;
+    return (void*)prevLineHandler;
+}
+
+/* Export Fixed Buffer Pointer */
+char* UartReceiver::dequeue_str(void)
+{
+    char *ret = NULL;
+    if (nesthead != nesttail) {
+        ret = &inner_buffer[nesthead][0];
+        nesthead++;
+        if (nesthead >= RXBUF_NEST) {
+            nesthead = 0;
+        }
+    }
+    return ret;
+}
+
+/* Recv char from UART and Concat to Liquid Buffer */
+void UartReceiver::concat()
+{
+    char ch;
+    int fixed;
+    /* connect all buffers */
+    while (pUart->readable() != 0) {
+        ch = pUart->getc();
+        fixed = this->enqueue_ch(ch);
+        if (fixed != BufOpen) {
+            if (pLineHandler != NULL) {
+                (this->pLineHandler)(this->dequeue_str());
+            } else {
+                pUart->printf("CALL DEF HANDLER:%s", this->dequeue_str());
+            }
+        }
+    }
+}
+
+/* Get Pointer */
+Serial *UartReceiver::getCurrentUart(void)
+{
+    return this->pUart;
+}
+
+/* Concat to Liquid Buffer */
+/** return UartReceiver::BufFixed, UartReceiver::BufOpen */
+int UartReceiver::enqueue_ch(char ch)
+{
+    int ret = BufOpen;
+    inner_buffer[nesttail][tail] = ch;
+    if (ch == '\n' || ch == '\r') {
+        /** switch buffer */
+        inner_buffer[nesttail][tail] = '\0';
+        nesttail++;
+        tail = 0;
+        if (nesttail >= RXBUF_NEST) {
+            nesttail = 0;
+        }
+        ret = BufFixed;
+    } else {
+        tail++;
+        if (tail >= RXBUF_SIZE) {
+            /** -- stack overflow --- */
+            /** IGNORED **/
+            tail = RXBUF_SIZE - 1;
+        }
+    }
+    return ret;
+}
\ No newline at end of file