Revision 0:9b1aa393acb3, committed 2014-05-12

Comitter:

va009039

Date:

Mon May 12 15:53:39 2014 +0000

Child:

1:3d02f8b77d68

Commit message:

first commit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BaseUsbUartBridge.cpp	Mon May 12 15:53:39 2014 +0000
@@ -0,0 +1,59 @@
+#include "BaseUsbUartBridge.h"
+
+// http://mbed.org/handbook/USBSerial
+// http://mbed.org/media/uploads/samux/serial.zip
+
+BaseUsbUartBridge::BaseUsbUartBridge(PinName tx, PinName rx, int uart_buf_size, int usb_buf_size)
+    : SerialBase(tx, rx), USBCDC(0x1f00, 0x2012, 0x0001, true),
+    uart_buf(uart_buf_size), usb_buf(usb_buf_size)
+{
+    SerialBase::attach(this, &BaseUsbUartBridge::uart_handler, RxIrq);
+}
+
+void BaseUsbUartBridge::poll()
+{
+    uint8_t c;
+    int size = uart_buf.available();
+    if (size > 0) {
+        uint8_t buf[MAX_PACKET_SIZE_EPBULK];
+        if (size > sizeof(buf)) {
+            size = sizeof(buf);
+        }
+        for(int i = 0; i < size; i++) {
+            uart_buf.dequeue(&c);
+            buf[i] = c;
+            monitor(_UART, c);
+        }
+        if (terminal_connected) {
+            USBCDC::send(buf, size);
+        }
+    }
+    
+    if (usb_buf.dequeue(&c)) {
+        SerialBase::_base_putc(c);
+        monitor(_USB, c);
+    }
+}
+
+void BaseUsbUartBridge::uart_handler(void)
+{
+    uint8_t c = SerialBase::_base_getc();
+    uart_buf.queue(c);
+}
+
+bool BaseUsbUartBridge::bulk_callback()
+{
+    uint8_t c[65];
+    uint32_t size = 0;
+
+    //we read the packet received and put it on the circular buffer
+    readEP(c, &size);
+    for (uint32_t i = 0; i < size; i++) {
+        usb_buf.queue(c[i]);
+    }
+
+    // We reactivate the endpoint to receive next characters
+    readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+    return true;    
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BaseUsbUartBridge.h	Mon May 12 15:53:39 2014 +0000
@@ -0,0 +1,29 @@
+#pragma once
+#include "mbed.h"
+#include "USBCDC.h"
+#include "CircBuffer.h"
+
+typedef enum {
+    _USB,_UART,
+} src_t;
+
+class BaseUsbUartBridge : public SerialBase, public USBCDC {
+public:
+    BaseUsbUartBridge(PinName tx, PinName rx, int uart_buf_size = 256, int usb_buf_size = 1024);
+    void poll();
+
+protected:
+    virtual bool EP2_OUT_callback() { return bulk_callback(); }
+    virtual void lineCodingChanged(int baud, int bits, int parity, int stop){
+        SerialBase::baud(baud);
+    }
+    virtual void controlLineStateChanged(int rts, int dtr){}
+    virtual void monitor(src_t src, uint8_t c) {}
+
+private:
+    bool bulk_callback();
+    void uart_handler(void);
+    CircBuffer<uint8_t> uart_buf;
+    CircBuffer<uint8_t> usb_buf;
+};
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBDevice.lib	Mon May 12 15:53:39 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/va009039/code/USBDevice/#c4c8fd0b0f12

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon May 12 15:53:39 2014 +0000
@@ -0,0 +1,64 @@
+#include "BaseUsbUartBridge.h"
+DigitalOut led_xbee(LED1),led_usb(LED2),led_reset(LED3),led_heartbeat(LED4);
+RawSerial pc(MBED_UARTUSB);
+#if defined(TARGET_LPC4088)
+#define XBEE_UART P4_22,P4_23
+DigitalOut xbee_rts(P4_21);
+DigitalOut xbee_dtr(P4_19);
+DigitalOut xbee_reset(P4_17);
+DigitalIn reset_sw(P2_10);
+#define SW_MODE PullUp
+#elif defined(TARGET_LPC1768)
+#define XBEE_UART p9,p10
+DigitalOut xbee_rts(p21);
+DigitalOut xbee_dtr(p22);
+DigitalOut xbee_reset(p30);
+DigitalIn reset_sw(p14);
+#define SW_MODE PullDown
+#else
+#error "target error"
+#endif
+
+class USB_XBee : public BaseUsbUartBridge {
+public:
+    USB_XBee(PinName tx, PinName rx) : BaseUsbUartBridge(tx, rx) {}
+    virtual void controlLineStateChanged(int rts, int dtr){
+        xbee_rts = rts ^ 1;
+        xbee_dtr = dtr ^ 1;
+    }
+    virtual void monitor(src_t src, uint8_t c) {
+        switch(src) {
+            case _UART: led_xbee = !led_xbee; break;
+            case _USB: led_usb = !led_usb; break;
+        }
+        //pc.putc(c);// debug
+    }
+};
+
+USB_XBee usb_xbee(XBEE_UART);
+
+int main() {
+    pc.baud(115200);
+
+    xbee_rts = 0;
+    xbee_dtr = 0;
+    xbee_reset = 1;
+    reset_sw.mode(SW_MODE);
+    int prev_sw = 1;
+
+    Timer heartbeat_t;
+    heartbeat_t.reset();
+    heartbeat_t.start();
+    while(1) {
+        if (reset_sw ^ prev_sw) {
+            prev_sw = reset_sw;
+            xbee_reset = prev_sw ^ (SW_MODE == PullDown ? 1 : 0);
+            led_reset = xbee_reset;
+        }
+        if (heartbeat_t.read_ms() > 500) {
+            heartbeat_t.reset();
+            led_heartbeat = !led_heartbeat;
+        }
+        usb_xbee.poll();
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon May 12 15:53:39 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8a40adfe8776
\ No newline at end of file