9ce6804b
 pfrison
ledDriver test a ...
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#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);
}
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