pt100: fix regression introduced in f925d2c

diff --git a/pt100/uart.c b/pt100/uart.c
index caa0077b2ab1b501f8ed845c0634b95c5315c652..08f682363a0f8057384fb991129499cb532adadd 100644 (file)
--- a/pt100/uart.c
+++ b/pt100/uart.c
@@ -27,7 +27,6 @@
 
 uint8_t rxcnt = 0, txpoint = 0;
 volatile uint8_t txcnt = 0;
-volatile uint8_t busy = 0;
 uint8_t rxbuf[15];
 uint8_t txbuf[15];
 
@@ -55,8 +54,6 @@ void forward_msg(uint8_t i) {
   else                rxbuf[2]--;
   sei();
   while (TX_BUSY()) {};
-  while (busy == 1) {};
-  busy = 1;
   memcpy ((uint8_t*)txbuf,(uint8_t*)rxbuf,i);
   STARTTX(i);
   }  
@@ -74,8 +71,6 @@ uint8_t is_my_address(uint8_t s) {
 
 void send_answer_hex(uint8_t type, uint8_t chan, uint32_t v) {
   sei();
-  while (busy == 1) {};
-  busy = 1;
   while(TX_BUSY());
   txbuf[0]='A';
   txbuf[1]=type;
@@ -160,6 +155,5 @@ ISR(USART0_UDRE_vect) {
     txpoint = 0;
     txcnt = 0;
     UCSR0B &= ~(1<< UDRIE0);
-    busy = 0;
     }
   }
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