From cbc941282074856fc6179761b70a0c9879b0b64d Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Tue, 11 Oct 2011 21:56:36 +0200
Subject: update firmware to @319

---
 firmware/adc.c | 152 ++++++++++++++++++++++++++++++---------------------------
 1 file changed, 81 insertions(+), 71 deletions(-)

(limited to 'firmware/adc.c')

diff --git a/firmware/adc.c b/firmware/adc.c
index a9449b7..915dbce 100644
--- a/firmware/adc.c
+++ b/firmware/adc.c
@@ -37,19 +37,27 @@
 #include "protocol.h"
 #include "adc.h"
 
+#include <stdio.h>
+#include "debug.h"
+
+
 void adc_parser(char *buf)
 {
+  //debugf("adc parser CMD %02x\n",buf[0]);
    switch(buf[0])
    {
       case CMD_ADC_INIT_PIN:
-         adc_init_usb((int)buf[2]);
-      break;
+         adc_init_usb(buf[2]);
+        break;
+      case CMD_ADC_DEINIT_PIN:
+         adc_deinit_usb(buf[2]);
+        break;
       case CMD_ADC_GET:
-         adc_get_usb((int)buf[2]);
-      break;
+         adc_get_usb(buf[2]);
+        break;
       case CMD_ADC_REF:
-         adc_ref_usb((int)buf[2]);
-      break;
+         adc_ref_usb(buf[2]);
+        break;
 
       default:
          answer[0]=buf[0];
@@ -59,42 +67,49 @@ void adc_parser(char *buf)
     }
 }
 
-int adc_init(int pin)
+int adc_init(uint8_t pin)
 {
-   if (pin >= 33 && pin <= 40)
-   {
-      octopus.ports[pin] = PIN_AD;
-
-      switch(pin)
-      {
-         case 40:	  break;
-         case 39:	  break;
-         case 38:	  break;
-         case 37:	  break;
-         case 36:	  break;
-         case 35:	  break;
-         case 34:	  break;
-         case 33:	  break;
-         default:
-	         return RSP_IMPOSSIBLE_PIN_CONFIG;
-      } 
-      return RSP_OK; 
-   }
-   return RSP_UNKOWN_PIN;
+  if (pin >= 10 && pin <= 17)
+  {
+     octopus.ports[pin] = PIN_AD;
+     ADMUX |= (1<<REFS1) | (1<<REFS0); // interne Referenzspannung nutzen
+     return RSP_OK; 
+  }
+
+  return RSP_UNKOWN_PIN;
 }
 
-void adc_init_usb(int pin)
+void adc_init_usb(uint8_t pin)
 {
    answer[0]=CMD_ADC_INIT_PIN;
-   answer[1]= (unsigned char)adc_init(pin);
+   answer[1]=(unsigned char)adc_init(pin);
    answer[2]=0;
 
    CommandAnswer(3);
 }
 
-void adc_get_usb(int pin)
+int adc_deinit(uint8_t pin)
+{
+  if (octopus.ports[pin] == PIN_AD)
+  {
+     octopus.ports[pin] = PIN_NONE;
+     return RSP_OK; 
+  }
+
+  return RSP_UNKOWN_PIN;
+}
+
+void adc_deinit_usb(uint8_t pin)
+{
+   answer[0]=CMD_ADC_DEINIT_PIN;
+   answer[1]= (unsigned char)adc_deinit(pin);
+   answer[2]=0;
+
+   CommandAnswer(3);
+}
+
+void adc_get_usb(uint8_t pin)
 {
- 
    uint16_t result;
    //uint8_t result[2];
 
@@ -110,64 +125,59 @@ void adc_get_usb(int pin)
 }
 
 
-int adc_get(int pin, uint16_t *value)
+int adc_get(uint8_t pin, uint16_t *value)
 {
-   *value = 0;
-
-   if (octopus.ports[pin] == PIN_AD)
-   {
-      switch (pin)
-      {
-         case 40: *value =_adc_read_channel(0); break;
-         case 39: *value =_adc_read_channel(1); break;
-         case 38: *value =_adc_read_channel(2); break;
-         case 37: *value =_adc_read_channel(3); break;
-         case 36: *value =_adc_read_channel(4); break;
-         case 35: *value =_adc_read_channel(5); break;
-         case 34: *value =_adc_read_channel(6); break;
-         case 33: *value =_adc_read_channel(7); break;
-         default:
-	      return RSP_IMPOSSIBLE_PIN_CONFIG;
-      } 
-      return RSP_OK;
-   } 
-   else 
-   {
-      return RSP_WRONG_PIN_CONFIG;
-   } 
+  *value = 0;
+
+  if (octopus.ports[pin] == PIN_AD)
+  {
+    // 40  => 0
+    // 39  => 1
+    // 38  => 2
+    // pin  => 40-pin
+    *value =_adc_read_channel(17 - pin);
+    debugf("Wert %i\r\n",*value);
+    return RSP_OK;
+  }
+  else 
+    return RSP_WRONG_PIN_CONFIG;
 }
 
-void adc_ref_usb(int ref)
+void adc_ref_usb(uint8_t ref)
 {
    answer[0]=CMD_ADC_REF;
    answer[1]=adc_ref(ref);
-   CommandAnswer(2);
+   answer[2]=0;
+   CommandAnswer(3);
 }
 
-int adc_ref(int ref)
+int adc_ref(uint8_t ref)
 {
-   ADMUX = 0x00;
-
-   switch(ref){
-      case PARAM_ADC_AREF:  break;
-      case PARAM_ADC_AVCC:  ADMUX |= (1<<REFS0); break;
-      case PARAM_ADC_INTERNAL:  ADMUX |= (1<<REFS1) | (1<<REFS0); break;
-      default:
-         return RSP_ERROR;
-   }
-   return RSP_OK;
+  ADMUX = 0x00;
+
+  switch(ref)
+  {
+    case PARAM_ADC_AREF:  break;
+    case PARAM_ADC_AVCC:  ADMUX |= (1<<REFS0); break;
+    case PARAM_ADC_INTERNAL:  ADMUX |= (1<<REFS1) | (1<<REFS0); break;
+    default:
+      return RSP_ERROR;
+  }
+
+  return RSP_OK;
 }
 
-uint16_t _adc_read_channel(int mux)
+uint16_t _adc_read_channel(uint8_t mux)
 {
    int i;
    uint16_t result;
+
+   //ADMUX |= mux;                      // Kanal waehlen
  
    ADCSRA = (1<<ADEN) | (1<<ADPS1) | (1<<ADPS0);    // Frequenzvorteiler 
                               // setzen auf 8 (1) und ADC aktivieren (1)
  
-   //ADMUX |= (unsigned char)mux;                      // Kanal waehlen
-   ADMUX = (ADMUX & 0xF0) | (unsigned char) mux; // select channel
+   ADMUX = (ADMUX & 0xF0) | mux; // select channel
   
    //ADMUX |= (1<<REFS1) | (1<<REFS0); // interne Referenzspannung nutzen 
  
-- 
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