ledDriver test a tester

pfrison
1 parent 6a806062
Showing 3 changed files with 80 additions and 17 deletions Show diff stats
tests/atmega2560/ledControl/ledControl.c
tests/atmega2560/ledControl/tlc5947.c
tests/atmega2560/ledControl/tlc5947.h
 #include <avr/io.h>
 #include <util/delay.h>
+#include <math.h>
+
+#define	NB_DRIVERS 3
+#define MAX_VALUE 85 //TODO tbd !
+#define DELAY 100
 int main(void){
-	// SCLK PIN 37
-	// SIN PIN 35
-	DDRC = 0x03;
-	uint8_t LEDs = {10, 20, 30, 40, 50, 60, 70, 80, 90,
-		100, 110, 120, 130, 140, 150, 160, 170, 180, 190
-		200, 210, 220, 230, 240};
-	uint8_t ANDs = {0x001, 0x002, 0x004, 0x008, 0x010, 0x020, 0x040, 0x080,
-		0x100, 0x200, 0x400, 0x800};
+	// Initialisation
+	unsigned int ledValues[NB_DRIVERS * DLED_CHANNELS];
+	init_LED_Drivers(NB_DRIVERS);
+	// Animation
+	unsigned int animTick = 0;
 	while(1){
-		for(int i=0; i<24; i++){
-			uint16_t n = LEDs[i] << 4;
-			int clkStatus = 0;
-			for(int j=0; j<12; j++){
-				if(j == 6)
-					clkStatus = 1;
-				PORTC = (n & ANDs[j]) << 1 | clkStatus;
-				_delay_ms(1);
-			}
+		// Build animation
+		for(int i=0; i<NB_DRIVERS * DLED_CHANNELS; i++){
+			double sinIn = (double) animTick / 8;
+			unsigned int val = (unsigned int) (0.5 + (sin(sinIn) * 0.5));
+			ledValues[i] = val * MAX_VALUE;
 		}
+		animTick++;
+		if(animTick >= 10000)
+			animTick = 0;
+
+		set_LED_Drivers(groupes, NB_DRIVERS);
+		_delay_ms(100);
 	}
 	return 0;
 }
@@ -0,0 +1,52 @@
+#include <avr/io.h>
+#include "tlc5947.h"
+
+#define	DLED_CHANNELS	24
+
+#define DDR_DLED	DDRD
+#define PORT_DLED	PORTD
+
+#define PIN_DLED_CLOCK	5
+#define PIN_DLED_DATA	4
+#define PIN_DLED_LATCH	6
+
+void init_LED_Drivers(int nb){
+    // LED drivers I/O as outputs
+    DDR_DLED |= (1<<PIN_DLED_CLOCK) | (1<<PIN_DLED_DATA) | (1<<PIN_DLED_LATCH);
+    // Set LATCH output low
+    PORT_DLED &= ~(1<<PIN_DLED_LATCH);
+}
+
+
+void set_LED_Drivers(unsigned int pwm[], int nb){
+    // Set LATCH output low
+    PORT_DLED &= ~(1<<PIN_DLED_LATCH);
+    // 24 channels per TLC5947
+    int i;
+    for(i=DLED_CHANNELS*nb-1; i>=0; i--){
+        // 12 bits per channel, send MSB first
+        int v=pwm[i];
+        int j;
+        for(j=0; j<12; j++){
+            // Set CLOCK output low
+            PORT_DLED &= ~(1<<PIN_DLED_CLOCK);
+
+            // Set DATA as stated by bit #j of i
+            if(v & 0x0800)
+                PORT_DLED |= (1<<PIN_DLED_DATA);
+            else
+                PORT_DLED &= ~(1<<PIN_DLED_DATA);
+
+            // Set CLOCK output HIGH
+            PORT_DLED |= (1<<PIN_DLED_CLOCK);
+            v <<= 1;
+        }
+    }
+    // Set CLOCK output low
+    PORT_DLED &= ~(1<<PIN_DLED_CLOCK);
+
+    // Set LATCH output high
+    PORT_DLED |= (1<<PIN_DLED_LATCH);
+    // Set LATCH output low
+    PORT_DLED &= ~(1<<PIN_DLED_LATCH);
+}
@@ -0,0 +1,7 @@
+#ifndef TLC5947
+#define TLC5947
+
+void init_LED_Drivers(int nb);
+void set_LED_Drivers(unsigned int pwm[], int nb);
+
+#endif