Diff: main.cpp

Revision:

0:d65648cc3923

Child:

2:0cc3bba73370

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Feb 25 06:51:30 2015 +0000
@@ -0,0 +1,61 @@
+#include "mbed.h"
+
+#include "PCA9955A.h"
+PCA9955A    led_cntlr( p28, p27, 0x02 );    //  SDA, SCL, Slave_address(option)
+
+#define     GRADATION_PERIOD    6.0
+
+int main()
+{
+    led_cntlr.gradation_group_setting( 0,  1 ); //  Port  1 is assigned to group 0
+    led_cntlr.gradation_group_setting( 0,  5 ); //  Port  5 is assigned to group 0
+    led_cntlr.gradation_group_setting( 0,  9 ); //  Port  9 is assigned to group 0
+    led_cntlr.gradation_group_setting( 0, 13 ); //  Port 13 is assigned to group 0
+    led_cntlr.gradation_group_setting( 1,  2 ); //  Port  2 is assigned to group 1
+    led_cntlr.gradation_group_setting( 1,  6 ); //  Port  6 is assigned to group 1
+    led_cntlr.gradation_group_setting( 1, 10 ); //  Port 10 is assigned to group 1
+    led_cntlr.gradation_group_setting( 1, 14 ); //  Port 14 is assigned to group 1
+    led_cntlr.gradation_group_setting( 2,  3 ); //  Port  3 is assigned to group 2
+    led_cntlr.gradation_group_setting( 2,  7 ); //  Port  7 is assigned to group 2
+    led_cntlr.gradation_group_setting( 2, 11 ); //  Port 11 is assigned to group 2
+    led_cntlr.gradation_group_setting( 2, 15 ); //  Port 15 is assigned to group 2
+    //  Port 0, 4, 8 and 12 are not assigned to any groups
+    //  Group 3 has no assigned port
+
+    //  Making same gradation shape to group 0, 1 and 2
+    //  The gradation shape will be total 6 seconds cycle including 2 seconds LED-OFF
+    float cycle   =
+    led_cntlr.gradation_ramp_setting( 0, GRADATION_PERIOD, HOLD_0_00_SEC, HOLD_2_00_SEC, RAMP_UP_DOWN );
+    led_cntlr.gradation_ramp_setting( 1, GRADATION_PERIOD, HOLD_0_00_SEC, HOLD_2_00_SEC, RAMP_UP_DOWN );
+    led_cntlr.gradation_ramp_setting( 2, GRADATION_PERIOD, HOLD_0_00_SEC, HOLD_2_00_SEC, RAMP_UP_DOWN );
+
+    //  Start group 0
+    led_cntlr.gradation_start( 0 );
+
+    //  Start group 1 (after 1/3 cycle delay)
+    wait( cycle / 3.0 );
+    led_cntlr.gradation_start( 1 );
+
+    //  Start group 2 (after 1/3 cycle delay)
+    wait( cycle / 3.0 );
+    led_cntlr.gradation_start( 2 );
+
+    //
+    //  Now the gradation control for 3 groups are working
+    //
+
+    //
+    //  Next while loop perform manual control for Rest of ports (0, 4, 8 and 12).
+    //  You will see the operation for manual controll ports will be stopped if the I2C line is removed.
+    //  But it continues the gradation control if only power supply is available
+    //
+    while(1) {
+        for ( int i = 1; i <= 100; i++ ) {
+            led_cntlr.pwm(  0, (float)i / 100.0 );
+            led_cntlr.pwm(  4, (float)i / 100.0 );
+            led_cntlr.pwm(  8, (float)i / 100.0 );
+            led_cntlr.pwm( 12, (float)i / 100.0 );
+            wait( 0.01 );
+        }
+    }
+}
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