steeven lee / BufferedSerial

Inherit from Serial and use software buffers for TX and RX. This allows the UART peripherals to operate in a IRQ driven mode. Overrides most (but not all) stdio functions as Serial did

Dependencies:   Buffer

Dependents:   mbed_esp8266_demo

Fork of BufferedSerial by Sam Grove

Diff: BufferedSerial.cpp

Revision:
11:9c34df035d99
Parent:
10:9ee15ae3d1a3
diff -r 9ee15ae3d1a3 -r 9c34df035d99 BufferedSerial.cpp
--- a/BufferedSerial.cpp	Wed Jan 07 18:37:11 2015 +0000
+++ b/BufferedSerial.cpp	Sun May 03 02:48:55 2015 +0000
@@ -52,9 +52,36 @@
 
 int BufferedSerial::getc(void)
 {
+    while (!readable() && !SERIAL_BASE::readable())
+        ;
     return _rxbuf;
 }
 
+
+char* BufferedSerial::readl(char *s, int size) 
+{
+    if (s == NULL || size <= 0)
+        return NULL;
+
+    char* ptr = s;
+
+    while (1) {
+        if (readable()) {
+            if ((size--) > 0) {
+                *ptr = _rxbuf;
+                if (*ptr == '\n' || *ptr == 0) {
+                    break;
+                }
+                ptr++;
+            } else
+                goto end;
+        }
+    }
+    if (size > 0)
+        *ptr = 0;
+    end: return s;
+}
+
 int BufferedSerial::putc(int c)
 {
     _txbuf = (char)c;