added support for analog pins (not perfect...)

1 files changed, 46 insertions, 0 deletions

diff --git a/software/rhmixxx/analog.c b/software/rhmixxx/analog.c
index 45c89b0..e15c2eb 100644
--- a/software/rhmixxx/analog.c
+++ b/software/rhmixxx/analog.c
@@ -27,10 +27,56 @@
 #define ANALOG_PORT PORTF
 #define ANALOG_DDR DDRF
 
+#ifndef DISABLE_ANALOG
+
+#include <LUFA/Drivers/Peripheral/ADC.h>
+uint8_t analog_last_sent[ANALOG_NUM_INPUTS];
+static uint8_t analog_channels[] = { ADC_CHANNEL0, ADC_CHANNEL1, ADC_CHANNEL2, ADC_CHANNEL3,
+                                     ADC_CHANNEL4, ADC_CHANNEL5, ADC_CHANNEL6, ADC_CHANNEL7 };
+
+#endif
+
 void analog_init(void)
 {
+  ANALOG_DDR = 0x00;
+  ANALOG_PORT = 0x00;
+
+#ifndef DISABLE_ANALOG
+  int i;
+  for(i = 0; i < ANALOG_NUM_INPUTS; ++i)
+    analog_last_sent[i] = 0;
+
+  ADC_Init(ADC_SINGLE_CONVERSION | ADC_PRESCALE_2);
+  ADC_SetupChannel(ADC_CHANNEL0);
+  ADC_SetupChannel(ADC_CHANNEL1);
+  ADC_SetupChannel(ADC_CHANNEL2);
+  ADC_SetupChannel(ADC_CHANNEL3);
+  ADC_SetupChannel(ADC_CHANNEL4);
+  ADC_SetupChannel(ADC_CHANNEL5);
+  ADC_SetupChannel(ADC_CHANNEL6);
+  ADC_SetupChannel(ADC_CHANNEL7);
+#endif
+}
+
+uint8_t analog_get_value(uint8_t channel)
+{
+#ifndef DISABLE_ANALOG
+  if(channel < ANALOG_NUM_INPUTS)
+    return analog_last_sent[channel];
+#endif
+  return 0;
 }
 
 void analog_task(void)
 {
+#ifndef DISABLE_ANALOG
+  uint8_t i;
+  for(i = 0; i < ANALOG_NUM_INPUTS; ++i) {
+    uint8_t tmp = (ADC_GetChannelReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | analog_channels[i])) >> 3;
+    if(analog_last_sent[i] != tmp) {
+      analog_last_sent[i] = tmp;
+      eventqueue_push(ANALOG_MIDI_NOTE_OFFSET + i, 0);
+    }
+  }
+#endif
 }