Diff: example2.h

Revision:

0:055897ab699b

Child:

1:46c8c60e744a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/example2.h	Sun Jan 16 18:27:44 2011 +0000
@@ -0,0 +1,103 @@
+/*
+    Copyright (c) 2011 Andy Kirkham
+ 
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+ 
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+ 
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+*/
+
+#ifdef MAX3100_EXAMPLE_COMPILE
+
+/*
+ * Connecting up the MAX3100 for this test program. Note, to form a "loopback"
+ * the MAX3100 TX pin (13) is connected to the RX pin (12). Don't forget thwe Xtal
+ * and power pins that are not shown here. Although I do PullUp mode on the IRQ pin
+ * I still needed a real external pull up resistor on the IRQ lines. You may need to
+ * add two pullups to teh two interrupt lines at p9 and p11.
+ *                                          ____________
+ *                                         /            \ U1
+ * Mbed MOSI p5 |-------*---------------> 1| Din     TX | 13 ------\
+ *      MISO p6 |-----*-|---------------> 2| Dout       |          |
+ *      SCLK p7 |---*-|-|---------------> 3| Sclk    RX | 12 ------/
+ *           p8 |---|-|-|---------------> 4| CS         |
+ *           p9 |---|-|-|---------------> 5| IRQ        | MAX3100 
+ *                  | | |        +5v ---> 6| SHTD       | Xtal and PWR not shown.
+ *                  | | |                  \____________/
+ *                  | | |                   ____________
+ *                  | | |                  /            \ U2
+ *                  | | \---------------> 1| Din     TX | 13 ------\
+ *                  | \-----------------> 2| Dout       |          |
+ *                  \-------------------> 3| Sclk    RX | 12 ------/
+ *          p10 |-----------------------> 4| CS         |
+ *          p11 |-----------------------> 5| IRQ        | MAX3100
+ *                               +5v ---> 6| SHTD       | Xtal and PWR not shown.
+ *                                         \____________/
+ *
+ * This example shows two MAX3100 sharing a single SPI bus. Each device, however, 
+ * still has it's own CS and IRQ signals.
+ */
+
+#include "mbed.h"
+#include "MAX3100.h"
+
+Serial  pc(USBTX, USBRX);
+SPI     spi(p5, p6, p7);
+MAX3100 *max1;
+MAX3100 *max2;
+
+int main() {
+        
+    // Set the PC USB serial baud rate.
+    pc.baud(115200);
+
+    // Format the SPI interface.    
+    spi.format(16, 0);
+    spi.frequency(MAX3100_SPI_FREQ);
+    
+    // Create the two MAX3100 objects which share the SPI bus.
+    max1 = new MAX3100(&spi, p8, p9);
+    max2 = new MAX3100(&spi, p10, p11);
+    
+    // Enable the interrupts.
+    max1->enableRxIrq();
+    max1->enableTxIrq();
+    max2->enableRxIrq();
+    max2->enableTxIrq();
+    
+    max1->printf("\nHello World.\n");
+    max2->printf("\nHello World.\n");
+    
+    // Any byte received on the "USB serial port" is sent to both MAX3100 devices.
+    // Any byte received by a MAX3100 device is sent to the "USB serial port".
+    while (1) {
+        if (pc.readable()) {
+            int c = pc.getc();
+            while (!max1->writable());
+            max1->putc(c);            
+            while (!max2->writable());
+            max2->putc(c);            
+        }
+        if (max1->readable()) {
+            pc.putc( max1->getc() );
+        }
+        if (max2->readable()) {
+            pc.putc( max2->getc() );
+        }
+    }    
+}
+
+#endif