Diff: eth_comfort.h

Revision:

0:b79cb3278583

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eth_comfort.h	Wed Apr 27 19:02:00 2011 +0000
@@ -0,0 +1,98 @@
+#ifndef ETH_COMFORT_H
+#define ETH_COMFORT_H
+
+/*!
+ * \file       eth_comfort.h
+ * \brief      Read the messages from the ETH-Radio-Shutter
+ * \author     Karl Zweimüller 
+ */
+
+
+#include "mbed.h"
+
+#include "rfm12b.h"
+
+// a message from the eth-Device
+struct eth_message {
+    uint8_t    cnt;                //message-counter
+    uint8_t    len;                //message-length
+    uint32_t   adr;                // unique address of device
+    uint8_t    cmd;                // the command
+    uint8_t    data;               // optional data
+    uint8_t    xdata;              // optional extra data
+    uint16_t   crc;                // crc fro the message
+};
+
+/**
+  * Class for the ETH-Window shutter by ELV(R)
+  * Uses the rfm12B to receive the signals sent by the radio-shutter
+  *
+ */
+class eth_comfort {
+
+public:
+
+    /**
+     * Constructor.
+    *
+    * @param mosi SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p5 or p11
+    * @param miso SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p6 or p12
+    * @param sclk SPI-Interface. One of the 2 PSI-Interfaces of mbed. Pin p7 or p13
+    * @param nsel Chip-Select.   A Digial Output of mbed
+    * @param rxdata  Data-Pin for received data. A DigitalIn of mbed
+    * @param rxled   LED1 - LED4 for showing received bytes
+    */
+    eth_comfort(PinName mosi, PinName miso, PinName sclk, PinName nsel, PinName rxdata, PinName rxled);
+
+
+// initialize eth_comfort-receiver
+    void init();
+
+// is a new message readable - non blocking
+    bool readable();
+
+// read a eth-messsage - non blocking, shows the old message if no new is available
+    eth_message getMessage();
+
+
+
+private:
+
+// Interrupt Routine
+    void ISR();
+
+// the last received message
+    eth_message last_message;
+
+// new meeesage
+    eth_message new_message;
+
+// is a new message in the buffer?
+    bool message_received;
+
+// calcualte the crc for eth
+    uint16_t calcCRC16r( uint16_t c,uint16_t crc, uint16_t mask);
+
+    volatile uint8_t bit_cnt;
+    volatile uint16_t buffer_cnt;
+
+    volatile uint8_t rbyte;
+
+    volatile uint8_t buf[1024];
+    volatile uint8_t pack_ok,startbit;
+    volatile uint8_t decode,bcnt,lastbit;
+    volatile uint8_t state;
+    volatile uint16_t b;
+    volatile uint8_t blocklength;
+    int i,j,k;
+    bool  crc_ok;
+    uint16_t crc, swapped;
+
+    rfm12b *rfm12b_spi;
+
+    DigitalOut *rxLED;
+
+};
+
+#endif
+