Diff: XMIT_IR.cpp

Revision:

1:ae1d2167a10c

Parent:

0:556f9be6047d

Child:

2:2eb0a3a29b5b

--- a/XMIT_IR.cpp	Thu Oct 04 13:57:37 2012 +0000
+++ b/XMIT_IR.cpp	Sat Oct 06 01:44:32 2012 +0000
@@ -3,23 +3,67 @@
 
 
 
-irTransmitter::irTransmitter(PinName TX, PinName PWM)
+IRTransmitter::IRTransmitter(PinName TX, PinName PWM, PinName RX, int data_buff_len, void (*fptr)(void))
 {
+    ir_serial = new Serial(TX,RX);
+    ir_pwm = new PwmOut(PWM);
+    data_buffer_out = new char(data_buff_len);
+    data_buffer_in = new char(data_buff_len+2);
 
+    //Initialize modules
+    (*ir_pwm).period(1.0/38000.0);  //38kHz Modulation Freq
+    (*ir_pwm) = 0.5;                //pulse width = 50%
+    (*ir_serial).baud(2400);
+    (*ir_serial).attach(fptr,Serial::RxIrq);
+}
+
+IRTransmitter::~IRTransmitter()
+{
+    delete ir_serial;
+    delete ir_pwm;
+    delete data_buffer_out;
+    delete data_buffer_in;
 }
 
-irTransmitter::~irTransmitter()
+
+void IRTransmitter::MakePacket(char* data,int len)
+{
+    char check =0x0;
+    (*ir_serial).putc(ASCII_STX);
+    for(int i=0; i<len; i++) {
+        check^=data[i];
+        (*ir_serial).putc(data[i]);
+    }
+    (*ir_serial).putc(check);
+    (*ir_serial).putc(ASCII_ETX);
+}
+
+char IRTransmitter::ReadPacket(char* data)
 {
+    osEvent evt = ir_data_mailbox.get();
+    if(evt.status == osEventMail) {
+        char* mail = (char*)evt.value.p;
+        (*data) = (*mail);
+        ir_data_mailbox.free(mail);
+        return 0;
+    }
+    return 1;
+}
+
+//Handle Reception of RX data (mail it to appropriate thread)
+void IRTransmitter::isr_uartrx(void)
+{
+    //get RX data (and prevent ISR from looping forever
+    uint32_t RBR = LPC_UART1->RBR; //This only works for p13/p14!
+
+    //write letter and put in mailbox
+    char* mail = ir_data_mailbox.alloc();
+    mail[0] = (char)RBR;
+    ir_data_mailbox.put(mail);
+
+    //Let message handler run
+    //(*threadptr_irstuff).signal_set(0x1);
 
 }
 
-irReceiver::irReceiver()
-{
 
-}
-
-irReceiver::~irReceiver()
-{
-
-}
-