Diff: main.cpp

Revision:

0:c862449fe089

Child:

1:85d249817f55

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 04 20:59:46 2016 +0000
@@ -0,0 +1,91 @@
+/* 
+ * Naam:            PCF8574_ButtonPress
+ *
+ * Omschrijving:
+ *                  I2C testprogramma:
+ *                  -Configureer PCF8574 4x OUT, 4x IN.
+ *                  -Zet alle PCF8574-Leds aan en geef terminal echo.
+ *                  -Zet alle PCF8574-Leds uit en geef terminal echo.
+ *                  -Zet led 2 aan ten teken 'Initialisatie Klaar' en geef terminal echo.
+ *                  -Als PCF8574-Knop# ingedrukt: PCF8574-Led# aan
+ *                  -Als PCF8574-Knop# losgelaten: PCF8574-Led# uit.
+ *
+ * Aanmaakdatum:    04 april 2016
+ * 
+ * Geschreven door: Marout Yasuo Sluijter-Borms
+ * 
+ * Copyright (c) 2016, MYSB, The Manhattan Project
+ * Zie einde programma /  See end of program.
+ */ 
+ 
+/*  Libraries en classes insluiten  */
+#include "mbed.h"
+#include "PCF8574.h"
+
+/*  Definieer seriële poorten       */
+Serial pc(USBTX, USBRX);            //  tx, rx communicatie met PC terminal via USB.
+I2C i2c_bus( p9, p10);              //  I2C bus.
+PCF8574 pcf0( p9, p10, 0x70);       //  Eerste PCF8574 chip
+PCF8574 pcf1( p9, p10, 0x72);       //  Tweede PCF8574 chip
+
+
+/*  Definieer digitale IO           */
+DigitalOut led(LED2);               //  Led 2 op mbed is signaal 'Initialisatie klaar'.
+
+/*  Definieer Analoge IO            */
+
+/*  Definieer globale variabelen    */
+char DataIn;                        //  Data ingelezen van PCF8574
+char DataOut;                       //  Data te schrijven naar PCF8574
+
+/*  Definieer globale constanten    */
+// const int chipaddress = 0x40;           //  Adres van de PCF8574
+const int i2c_speed = 400000;           //  Bussnelheid 400kHz
+const int baudrate = 38400;             //  Baudrate communicatie met terminal
+
+/*  Start hoofprogramma             */
+
+int main()
+{
+//    pc.baud(baudrate);                 //  stel baudrate in van usb serial
+    pc.printf("\x1B\x48\x1B\x4A\r");        // scherm schoon en cursor linksboven
+    pc.printf("PCF8574A als bidirectionele IO\n\r");
+
+    i2c_bus.frequency( i2c_speed);          //  Zet de I2C bus op 400kHz
+
+    pc.printf("Zet I2C speed op %d Hz.\n\r", i2c_speed);        //  echo naar de terminal
+
+    while (1)
+        {
+            DataOut = 0xF0;
+//            pcf0.write(DataOut);
+            DataIn = pcf0.read();       //  lees eerste chip uit
+            pc.printf("Waaarde van inputs: %d.\r\n", DataIn);        //  echo gelezen data naar terminal
+            wait ( 0.2);
+            DataOut = DataIn >> 4;     //  Shift DataIn 4 plaatsen rechts
+            pc.printf("Waaarde van outputs: %d.\r\n", DataOut);        //  echo gemodificeerde data naar terminal
+            wait ( 0.2);
+            pcf0.write(DataOut);
+        }       //  endwhile
+
+}       //  endmain
+
+/*
+ * 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.
+ */