NEC Near Field Communication RF module library

Diff: NECnfc.h

Revision:

0:337524afec9b

Child:

2:9e108187ccfe

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NECnfc.h	Tue Jul 17 08:30:31 2012 +0000
@@ -0,0 +1,108 @@
+/**
+ * NEC Near Field Communication RF module library for mbed
+ * Copyright (c) 2012 Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file
+ * @brief NEC Near Field Communication RF module library for mbed
+ * @note H001-000003-001 (950MHz), TY24FM-E2024 (2.4GHz)
+ */
+
+#include "mbed.h"
+
+enum NECTYPE {
+    NECTYPE_950MHz,
+    NECTYPE_2400MHz,
+};
+
+enum NECMSG {
+    NECMSG_ACK           = 0x00,
+    NECMSG_NOACK         = 0x01,
+    NECMSG_SEARCH        = 0x10,
+    NECMSG_SEND_DAT      = 0x11,
+    NECMSG_RESEND        = 0x12,
+    NECMSG_SEND_NOACK    = 0x13,
+    NECMSG_ENERGY_DETECT = 0x16,
+    NECMSG_SEND_CMD      = 0x17,
+    NECMSG_WRITE_RFCONF  = 0x21,
+    NECMSG_READ_RSSI     = 0x24,
+    NECMSG_READ_CONFIG   = 0x29,
+    NECMSG_WRITE_CONFIG  = 0x2A,
+    NECMSG_READ_DEFAULT  = 0x7D,
+    NECMSG_WRITE_DEFAULT = 0x7E,
+    NECMSG_RESET         = 0x77,
+};
+
+enum NECPWR {
+    NECPWR_LOW           = 0x00,
+    NECPWR_MID           = 0x01,
+    NECPWR_HIGH          = 0x02,
+};
+
+enum NECBAUD {
+    NECBAUD_9600           = 0x02,
+    NECBAUD_50k            = 0x06,
+    NECBAUD_100k           = 0x07,
+};
+
+enum NECUART {
+    UART_4800           = 0x01,
+    UART_9600           = 0x02,
+    UART_19200          = 0x04,
+    UART_38400          = 0x05,
+    UART_56700          = 0x06,
+    UART_115200         = 0x08,
+};
+
+struct ifMessage {
+    uint16_t start;
+    uint8_t  length;
+    uint8_t  msgid;
+    uint8_t  msgno;
+    uint32_t dstid;
+    uint32_t srcid;
+    uint8_t  parameter[242];
+} __attribute__((packed));
+
+
+/**
+ * NECnfc class
+ */
+class NECnfc {
+public:
+    /**
+     * Default constructor
+     */
+    NECnfc (PinName p_tx, PinName p_rx, PinName p_reset);
+
+    /**
+     * configuration
+     */
+    int begin (int ch, NECBAUD baud, NECUART uart = UART_115200, NECPWR power = NECPWR_LOW, NECTYPE type = NECTYPE_950MHz);
+    /**
+     * send
+     */
+    int send (int msgid, unsigned long dest, char *param, int len);
+    /**
+     * read
+     */
+    int read (struct ifMessage *ifmsg, int timeout = 5000);
+    /**
+     * read data ready
+     */
+    int readable ();
+    
+protected:
+    void isr_rx ();
+    
+private:
+    Serial rf;
+    DigitalOut reset;
+    int msgno;
+    struct ifMessage rxmsg;
+    char *rxbuf;
+    int rxlen, rxmode;
+    volatile int rxflg;
+
+};