Revision 0:ac66b38a42e3, committed 2011-05-03

Comitter:

okini3939

Date:

Tue May 03 12:13:42 2011 +0000

Child:

1:25b5d99157c4

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DMX/DMX.cpp	Tue May 03 12:13:42 2011 +0000
@@ -0,0 +1,138 @@
+/*
+ * DMX512 send/recv library
+ * Copyright (c) 2011 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file DMX.cpp
+ * @brief DMX512 send/recv
+ */
+
+#include "mbed.h"
+#include "DMX.h"
+
+DMX::DMX (PinName p_tx, PinName p_rx) : dmx(p_tx, p_rx) {
+    int i;
+
+    for (i = 0; i < DMX_SIZE; i ++) {
+        data_tx[i] = 0;
+        data_rx[i] = 0;
+    }
+    mode_tx = DMX_MODE_BEGIN;
+    mode_rx = DMX_MODE_BEGIN;
+
+    dmx.baud(250000);
+    dmx.format(8, Serial::None, 2);
+    dmx.attach(this, &DMX::int_rx, Serial::RxIrq);
+
+    ticker01.attach_us(this, &DMX::int_timer, 100); // 10kHz
+    
+    if (p_tx == p9) {
+      uart_lcr = &LPC_UART3->LCR;
+    } else
+    if (p_tx == p13) {
+      uart_lcr = &LPC_UART1->LCR;
+    } else
+    if (p_tx == p28) {
+      uart_lcr = &LPC_UART2->LCR;
+    }
+    if (p_rx == p10) {
+      uart_lsr = &LPC_UART3->LSR;
+    } else
+    if (p_rx == p14) {
+      uart_lsr = &LPC_UART1->LSR;
+    } else
+    if (p_rx == p27) {
+      uart_lsr = &LPC_UART2->LSR;
+    }
+}
+
+void DMX::put (int addr, int data) {
+    data_tx[addr] = data;
+}
+
+int DMX::get (int addr) {
+    return data_rx[addr];
+}
+
+void DMX::int_timer () {
+
+    switch (mode_tx) {
+    case DMX_MODE_BEGIN:
+        // Break Time
+        *uart_lcr |= (1 << 6);
+        addr_tx = 0;
+        mode_tx = DMX_MODE_BREAK;
+        break;
+
+    case DMX_MODE_BREAK:
+        addr_tx ++;
+        if (addr_tx >= DMX_TIME_BREAK) {
+            // Mark After Break
+            *uart_lcr &= ~(1 << 6);
+            addr_tx = 0;
+            mode_tx = DMX_MODE_MAB;
+        }
+        break;
+
+    case DMX_MODE_MAB:
+        addr_tx ++;
+        if (addr_tx >= DMX_TIME_MAB) {
+            // Start code
+            addr_tx = 0;
+            mode_tx = DMX_MODE_DATA;
+            dmx.attach(this, &DMX::int_tx, Serial::TxIrq);
+            dmx.putc(0);
+        }
+        break;
+    }
+}
+
+void DMX::int_tx () {
+    // Data
+    if (mode_tx == DMX_MODE_DATA) {
+        dmx.putc(data_tx[addr_tx]);
+        addr_tx ++;
+        
+        if (addr_tx >= DMX_SIZE) {
+            dmx.attach(0, Serial::TxIrq);
+            mode_tx = DMX_MODE_BEGIN;
+        }
+    }
+}
+
+void DMX::int_rx () {
+    int flg, dat;
+
+    flg = *uart_lsr;
+    dat = dmx.getc();
+
+    if (flg & (1 << 3) || flg & (1 << 4)) {
+        // Break Time
+        mode_rx = DMX_MODE_BREAK;
+        return;
+    }
+
+    if (mode_rx == DMX_MODE_BREAK) {
+
+        // Start Code
+        if (dat == 0) {
+            addr_rx = 0;
+            mode_rx = DMX_MODE_DATA;
+        } else {
+            mode_rx = DMX_MODE_ERROR;
+        }
+
+    } else
+    if (mode_rx == DMX_MODE_DATA) {
+
+        // Data
+        data_rx[addr_rx] = dat;
+        addr_rx ++;
+        
+        if (addr_rx >= DMX_SIZE) {
+            mode_rx = DMX_MODE_BEGIN;
+        }
+    }
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DMX/DMX.h	Tue May 03 12:13:42 2011 +0000
@@ -0,0 +1,73 @@
+/*
+ * DMX512 send/recv library
+ * Copyright (c) 2011 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file DMX.h
+ * @brief DMX512 send/recv
+ */
+ 
+#ifndef DMX_H
+#define DMX_H
+
+#include "mbed.h"
+
+#define DMX_SIZE 512
+#define DMX_TIME_BREAK 2 // 200us
+#define DMX_TIME_MAB 1 // 100us
+
+enum DMX_MODE {
+    DMX_MODE_BEGIN,
+    DMX_MODE_START,
+    DMX_MODE_BREAK,
+    DMX_MODE_MAB,
+    DMX_MODE_DATA,
+    DMX_MODE_ERROR,
+};
+
+/** brief DMX512 class (sender/client)
+ */
+class DMX {
+public:
+    /** init DMX class
+     * @param p_tx TX serial port (p9, p13, p28)
+     * @param p_rx RX serial port (p10, p14, p27)
+     */
+    DMX (PinName p_tx, PinName p_rx); 
+
+    /** Send the message
+     * @param addr DMX data address (0-511)
+     * @param data DMX data (0-255)
+     */
+    void put (int addr, int data);
+
+    /** Send the message
+     * @param addr DMX data address (0-511)
+     * @return DMX data (0-255)
+     */
+    int get (int addr);
+
+protected:
+
+    void int_timer ();
+    void int_tx ();
+    void int_rx ();
+//    void int_tx (MODSERIAL_IRQ_INFO *q);
+//    void int_rx (MODSERIAL_IRQ_INFO *q);
+
+    Serial dmx;
+//    MODSERIAL dmx;
+    Ticker ticker01;
+    __IO uint8_t *uart_lcr;
+    __I  uint8_t *uart_lsr;
+    volatile DMX_MODE mode_tx, mode_rx;
+    volatile int addr_tx, addr_rx;
+    unsigned char data_tx[512];
+    unsigned char data_rx[512];
+
+private:
+
+};
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 03 12:13:42 2011 +0000
@@ -0,0 +1,35 @@
+#include "mbed.h"
+#include "DMX.h"
+
+DMX dmx(p9, p10);
+//DMX dmx(p13, p14);
+//DMX dmx(p28, p27);
+
+DigitalOut myled(LED1);
+Serial pc(USBTX, USBRX);
+
+int main() {
+    int i, j;
+
+    j = 0;
+    while(1) {
+        myled = 1;
+        wait(0.2);
+        myled = 0;
+        wait(0.2);
+
+        j = j + 10;
+        if (j >= 256) j = 0;
+        for (i = 0; i < DMX_SIZE; i ++) {
+            dmx.put(i, j);
+        }
+
+        pc.printf("tx: %d\r\n", j);
+        
+        pc.printf("rx: ", dmx.get(0));
+        for (i = 0; i < 16; i ++) {
+            pc.printf("%d ", dmx.get(i));
+        }
+        pc.printf("\r\n");
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue May 03 12:13:42 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912