Diff: SoftSerial.cpp

Revision:

0:064ba08b22ef

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SoftSerial.cpp	Sat Sep 23 21:01:23 2017 +0000
@@ -0,0 +1,40 @@
+#include "SoftSerial.h"
+
+SoftSerial::SoftSerial(PinName TX, PinName RX, const char* name) {
+    tx_en = rx_en = false;
+    if (TX != NC) {
+        tx = new DigitalOut(TX);
+        tx_en = true;
+        tx->write(1);
+        tx_bit = -1;
+        txticker.attach(this, &SoftSerial::tx_handler);
+    }
+    if (RX != NC) {
+        rx = new InterruptIn(RX);
+        rx_en = true;
+        out_valid = false;
+        rxticker.attach(this, &SoftSerial::rx_handler);
+        rx->fall(this, &SoftSerial::rx_gpio_irq_handler);
+    }
+    
+    baud(9600);
+    format();
+}
+
+SoftSerial::~SoftSerial() {
+    if (tx_en)
+        delete(tx);
+    if (rx_en)
+        delete(rx);
+}
+
+void SoftSerial::baud(int baudrate) {
+    bit_period = 1000000 / baudrate;
+}
+
+void SoftSerial::format(int bits, Parity parity, int stop_bits) {
+    _bits = bits;
+    _parity = parity;
+    _stop_bits = stop_bits;
+    _total_bits = 1 + _bits + _stop_bits + (bool)_parity;
+}