From f021c6fe95603891a9da63b04791e2e934555ec7 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Thu, 25 Oct 2007 15:36:55 +0000
Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@65
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 demos/AVR-AT90CANx-GCC/chcore.c | 92 +++++++++++++++++++++++++++------
 readme.txt                      |  1 +
 2 files changed, 78 insertions(+), 15 deletions(-)

diff --git a/demos/AVR-AT90CANx-GCC/chcore.c b/demos/AVR-AT90CANx-GCC/chcore.c
index 9d2e0e1b2..ed9d90d01 100644
--- a/demos/AVR-AT90CANx-GCC/chcore.c
+++ b/demos/AVR-AT90CANx-GCC/chcore.c
@@ -21,26 +21,88 @@
 
 #include <avr/io.h>
 
+/*
+ * All inputs with pullups.
+ */
+#define VAL_DDRA  0x00
+#define VAL_PORTA 0xFF
+
+/*
+ * All inputs with pullups.
+ */
+#define VAL_DDRB  0x00
+#define VAL_PORTB 0xFF
+
+/*
+ * All inputs with pullups.
+ */
+#define VAL_DDRC  0x00
+#define VAL_PORTC 0xFF
+
+/*       PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0
+ *        IN  IN OUT  IN OUT  IN  IN  IN
+ * DDRD    0   0   1   0   1   0   0   0
+ *        PU HiZ VAL  PU VAL HiZ HiZ HiZ
+ * PORTD   1   0  ?1   1   1   0   0   0
+ */
+#define VAL_DDRD  0x28
+#define VAL_PORTD 0xB8
+
+/*       PE7 PE6 BUT LED PE3 PE2 PE1 PE0
+ *        IN  IN  IN OUT  IN  IN OUT  IN
+ * DDRE    0   0   0   1   0   0   1   0
+ *        PU  PU HiZ VAL  PU  PU VAL HiZ
+ * PORTE   1   1   0   1   1   1   1   0
+ */
+#define VAL_DDRE  0x12
+#define VAL_PORTE 0xDE
+
+/*       TDI TDO TMS TCK PF3 PF2 PF1 PF0
+ *         x   x   x   x  IN  IN  IN  IN
+ * DDRF    0   0   0   0   0   0   0   0
+ *         x   x   x   x  PU  PU  PU  PU
+ * PORTF   0   0   0   0   1   1   1   1
+ *
+ */
+#define VAL_DDRF  0x00
+#define VAL_PORTF 0x0F
+
+/*         x   x   x   x   x PG2 PG1 PG0
+ *         x   x   x   x   x  IN  IN  IN
+ * DDRG    0   0   0   0   0   0   0   0
+ *         x   x   x   x   x  PU  PU  PU
+ * PORTG   0   0   0   0   0   1   1   1
+ *
+ */
+#define VAL_DDRG  0x00
+#define VAL_PORTG 0x07
+
 void hwinit(void) {
 
   /*
    * I/O ports setup.
-   * Everything configured as input with pull-up initially.
    */
-  DDRA  = 0;
-  PORTA = 0xFF;
-  DDRB  = 0;
-  PORTB = 0xFF;
-  DDRC  = 0;
-  PORTC = 0xFF;
-  DDRD  = 0;
-  PORTD = 0xFF;
-  DDRE  = 0;
-  PORTE = 0xFF;
-  DDRF  = 0;
-  PORTF = 0xFF;
-  DDRG  = 0;
-  PORTG = 0xFF;
+  DDRA  = VAL_DDRA;
+  PORTA = VAL_PORTA;
+  DDRB  = VAL_DDRB;
+  PORTB = VAL_PORTB;
+  DDRC  = VAL_DDRC;
+  PORTC = VAL_PORTC;
+  DDRD  = VAL_DDRD;
+  PORTD = VAL_PORTD;
+  DDRE  = VAL_DDRE;
+  PORTE = VAL_PORTE;
+  DDRF  = VAL_DDRF;
+  PORTF = VAL_PORTF;
+  DDRG  = VAL_DDRG;
+  PORTG = VAL_PORTG;
+
+  /*
+   * External interrupts setup, all disabled initially.
+   */
+   EICRA = 0x00;
+   EICRB = 0x00;
+   EIMSK = 0x00;
 
   /*
    * Enables Idle mode for SLEEP instruction.
diff --git a/readme.txt b/readme.txt
index 030794714..50182db84 100644
--- a/readme.txt
+++ b/readme.txt
@@ -51,6 +51,7 @@ AVR-AT90CANx-GCC    - Port on AVR AT90CAN128, not complete yet.
   order to minimize the number of interrupts generated, it is possible to
   disable the feature and return to the old code which is a bit smaller, see
   the configuration parameters in ./ARM7-LPC214x/GCC/lpc214x_serial.h.
+- Some more work done on the AVR port, not tested yet.
 
 *** 0.3.4 ***
 - Fixed a problem in chVTSetI().