Changeset 2034:47fdcec46b5c in roaraudio

Timestamp:

06/21/09 15:07:14 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

use 18 states from no data to 0xFFFF for 16 bit LED PWM

Files:

• libroarlight/pwm.c (modified) (2 diffs)
• roard/driver_pwmled.c (modified) (2 diffs)

libroarlight/pwm.c

@@ -31 +31 @@
     0xFFFF
 */
-    0xFFFF, 0x7F7F, 0x777F, 0x7777,  0x5777, 0x5757, 0x5557, 0x5555,
-    0x1555, 0x1515, 0x1115, 0x1111,  0x0111, 0x0101, 0x0001, 0x0000
+    0xFFFF, 0x7FFF, 0x7F7F, 0x777F, 0x7777,  0x5777, 0x5757, 0x5557,
+    0x5555, 0x1555, 0x1515, 0x1115, 0x1111,  0x0111, 0x0101, 0x0001,
+    0x0000
                             };
 
@@ -51 +52 @@
   return -1;
 
- if ( value < 0 || value > state->bits )
+ if ( value < 0 || value > (state->bits+1) )
   return -1;
 

roard/driver_pwmled.c

@@ -94 +94 @@
 ssize_t driver_pwmled_write (struct roar_vio_calls * vio,  void *buf, size_t count) {
  struct driver_pwmled * self = vio->inst;
+ int value;
 
  if ( vio == NULL || buf == NULL )
@@ -101 +102 @@
   return -1;
 
- if ( roar_light_pwm_set(&(self->state), ((unsigned char*)buf)[self->channel] / 16) == -1 )
+ value = ((unsigned char*)buf)[self->channel] / 15;
+
+ if ( roar_light_pwm_set(&(self->state), value) == -1 )
   return -1;
 
-                                                                    // bit per word, bit per byte
- return roar_light_pwm_send(&(self->state), &(self->vio), self->rate/11/8/100) == 0 ? count : -1;
+ if ( value ) {
+                                                                     // bit per word, bit per byte
+  return roar_light_pwm_send(&(self->state), &(self->vio), self->rate/11/8/100) == 0 ? count : -1;
+ }
+
+ return count;
 }