Revision 0:d7de08989175, committed 2016-02-29

Comitter:

hemmer_matthias

Date:

Mon Feb 29 12:06:30 2016 +0000

Commit message:

bla

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/I2C.cpp	Mon Feb 29 12:06:30 2016 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#include "I2C.h"
+
+I2C pc9555 (p28, p27);    //SDA,SCL
+
+void bertl_PC9555_init()
+{
+    char data[2];
+    
+    // I2C Initialisierung
+    pc9555.frequency(PC9555_FREQUENCY);
+    
+    // Port 0 = LEDs
+    
+    // Adresse, RW# = 0, Config Port 0 (6) = 0x00 (=OutPut), Stop
+    data[0] = PC9555_Port0_DIR_IN;
+    data[1] = 0x00;     // Output    
+    pc9555.write(PC9555_ADDR, data, 2);  
+    
+    // Adresse, RW# = 0, Config Port 1 (7) = 0x00 (=InPut), Stop
+    data[0] = PC9555_Port1_DIR_IN;
+    data[1] = 0xFF;     // Input
+    pc9555.write(PC9555_ADDR, data, 2);  
+    
+    // Adresse, RW# = 0, Polarity Inversion Port 0 (4) = 0xFF (= inverted) , Stop  
+    data[0] = PC9555_Port0_INV;
+    data[1] = 0xFF;
+    pc9555.write(PC9555_ADDR, data, 2); 
+    
+     // Adresse, RW# = 0, Polarity Inversion Port 1 (5) = 0x00 (=NonInverted) , Stop
+    data[0] = PC9555_Port1_INV;
+    data[1] = 0x00;
+    pc9555.write(PC9555_ADDR, data, 2);      
+}
+
+void bertl_PC9555_leds(unsigned char leds)
+{
+    char data[2];   // Two Bytes for Transmitt via I2C
+    
+    // Send leds to Port0 of PC9555 tp I2C: 
+    // Start, Adress, RW# = 0, CMD I2C_Port0_OUT , leds, Stop
+    data[0] = PC9555_Port0_OUT;
+    data[1] = ~leds;        //bitwise inversion since HW is switched on with 0 (invers logic)
+    pc9555.write(PC9555_ADDR, data, 2);
+}
+
+unsigned char bertl_PC9555_switches()
+{
+    char data[1];
+    data[0] = PC9555_Port1_IN;
+    pc9555.write(PC9555_ADDR, data, 1, true); // tell him, we want to read Port1, no STOP
+    pc9555.read(PC9555_ADDR, data, 1, false); // read 1 byte, then send STOP
+    return((unsigned char) data[0]);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/I2C.h	Mon Feb 29 12:06:30 2016 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+
+// LED-Defines
+#define LED_FL_WHITE    0x01 // 0b0000 0001
+#define LED_FR_WHITE    0x04 // 0b0000 0100
+#define LED_FL_ORANGE   0x02 // 0b0000 0010
+#define LED_FR_ORANGE   0x08 // 0b0000 1000
+#define LED_BL_ORANGE   0x20 // 0b0010 0000
+#define LED_BR_ORANGE   0x80 // 0b1000 0000
+#define LED_BL_RED      0x10 // 0b0001 0000
+#define LED_BR_RED      0x40 // 0b0100 0000
+
+#define LED_L_ORANGE (LED_FL_ORANGE | LED_BL_ORANGE) // 0b0000 0010 | 0b0010 0000 = 0b0010 0010
+#define LED_R_ORANGE (LED_FR_ORANGE | LED_BR_ORANGE) // right blinkers    
+#define LED_WHITE    (LED_FL_WHITE  | LED_FR_WHITE)  // front light
+#define LED_RED      (LED_BL_RED    | LED_BR_RED)    //back light
+
+#define SW_FM 0x04
+#define SW_FL
+#define SW_FR
+#define SW_F (SW_FM|SW_FL|SW_FR)
+
+// PC9555-defines
+#define PC9555_ADDR 0x40 // A2 = A1 = A0 = 0
+#define PC9555_FREQUENCY 100000 // f in Hz
+
+//PC9555 Commands
+#define PC9555_Port0_IN (0)
+#define PC9555_Port1_IN (1)
+#define PC9555_Port0_OUT (2)
+#define PC9555_Port1_OUT (3)
+#define PC9555_Port0_INV (4)
+#define PC9555_Port1_INV (5)
+#define PC9555_Port0_DIR_IN (6)
+#define PC9555_Port1_DIR_IN (7)
+
+void bertl_PC9555_init();
+void bertl_PC9555_leds(unsigned char leds);
+unsigned char bertl_PC9555_switches();
\ No newline at end of file