From 78068e9588cdbd7d99c4334685d5b6664444d8bd Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Mon, 2 Jun 2014 01:47:54 +0000
Subject: added support gpio inputs (no lp until now)


diff --git a/software/rhmixxx/gpio.c b/software/rhmixxx/gpio.c
index bdc1378..4b3171a 100644
--- a/software/rhmixxx/gpio.c
+++ b/software/rhmixxx/gpio.c
@@ -21,36 +21,52 @@
 
 #include <avr/io.h>
 #include "gpio.h"
+#include "eventqueue.h"
 
 #define GPIO_PIN PINE
 #define GPIO_PORT PORTE
 #define GPIO_DDR DDRE
+#define GPIO_NUM_INPUTS 4
+#define GPIO_NUM_OUTPUTS 4
+
+uint8_t input_last_sent[GPIO_NUM_INPUTS];
 
 void gpio_init(void)
 {
   GPIO_DDR = 0x0F;
   GPIO_PORT = 0xF0;
+
+  uint8_t i;
+  for(i = 0; i < GPIO_NUM_INPUTS; ++i)
+    input_last_sent[i] = 0;
 }
 
 void gpio_out_on(uint8_t num)
 {
-  if(num < 4)
+  if(num < GPIO_NUM_OUTPUTS)
     GPIO_PORT |= (1 << num);
 }
 
 void gpio_out_off(uint8_t num)
 {
-  if(num < 4)
+  if(num < GPIO_NUM_OUTPUTS)
     GPIO_PORT &= ~(1 << num);
 }
 
 void gpio_out_toggle(uint8_t num)
 {
-  if(num < 4)
+  if(num < GPIO_NUM_OUTPUTS)
     GPIO_PORT ^= (1 << num);
 }
 
 void gpio_task(void)
 {
-  // TODO generate events on change of GPI
+  uint8_t i;
+  for(i = 0; i < GPIO_NUM_INPUTS; ++i) {
+    uint8_t current_state = GPIO_PIN & (1<<(i+4));
+    if(current_state != input_last_sent[i]) {
+      input_last_sent[i] = current_state;
+      eventqueue_push(i + 64, ((current_state) ? 0 : 1)); // TODO: offset should be defined somewhere
+    }
+  }
 }
diff --git a/software/rhmixxx/keypad.c b/software/rhmixxx/keypad.c
index 6bdb01f..f27c711 100644
--- a/software/rhmixxx/keypad.c
+++ b/software/rhmixxx/keypad.c
@@ -160,12 +160,7 @@ static inline void keypad_key_lowpass(uint8_t key_idx, uint8_t current_state)
 
     if(current_state != keypad_state[key_idx].last_sent) {
       keypad_state[key_idx].last_sent = current_state;
-
-      if(current_state) {
-        eventqueue_push(key_idx, 0);
-      } else {
-        eventqueue_push(key_idx, 1);
-      }
+      eventqueue_push(key_idx, ((current_state) ? 0 : 1));
     }
   }
 }
-- 
cgit v0.10.2