From: Fabrice Desclaux <serpilliere@droids-corp.org>
Date: Sun, 26 Feb 2012 21:52:40 +0000 (+0100)
Subject: rc_servos: revert use of registers for global variables
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=90919fb720235d8f3551cbc31b81e70078498f20;p=protos%2Frc_servos.git

rc_servos: revert use of registers for global variables
---

diff --git a/main.c b/main.c
index df8fb93..d390554 100644
--- a/main.c
+++ b/main.c
@@ -21,10 +21,11 @@ static struct servo servo_table[] = {
 };
 #define NB_SERVO (sizeof(servo_table)/sizeof(*servo_table))
 
-register uint8_t bypass asm("r2");
-register uint8_t done asm("r3");
-register uint8_t portval asm("r4");
-register uint8_t rxidx asm("r5");
+static volatile uint8_t bypass;
+static volatile uint8_t done;
+static volatile uint8_t portval;
+static volatile uint8_t rxidx;
+
 #define BYPASS_ENABLE 14
 #define BYPASS_DISABLE 15
 
@@ -39,22 +40,22 @@ register uint8_t rxidx asm("r5");
  * Command 14 is to enable bypass mode.
  * Command 15 is to disable bypass mode.
  */
-register union {
+static volatile union {
 	uint8_t u8;
 	struct {
 		uint8_t zero:1;
 		uint8_t cmd_num:4;
 		uint8_t val_msb:3;
 	};
-} byte0 asm("r6");
+} byte0;
 
-register union {
+static volatile union {
 	uint8_t u8;
 	struct {
 		uint8_t one:1;
 		uint8_t val_lsb:7;
 	};
-} byte1 asm("r7");
+} byte1;
 
 SIGNAL(TIMER1_COMPA_vect)
 {