From 66f62e972aa769f834df88a8f7e9785aa0c2e5e2 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Thu, 2 Jun 2016 22:51:17 +0000
Subject: [PATCH] Use the correct register and bit flag to enable the correct
 timer counter compare interrupt

---
 avr/send.c | 22 +++++++++++-----------
 bin/main.c |  4 +---
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/avr/send.c b/avr/send.c
index 84f3653..c6f0bf8 100644
--- a/avr/send.c
+++ b/avr/send.c
@@ -6,7 +6,7 @@
 #include <tabby/printer.h>
 #include <tabby/avr/uart.h>
 
-#define TIMER1_INTERVAL  1953
+#define TIMER1_INTERVAL 1953
 
 enum {
     TABBY_SEND_READING  =  0,
@@ -52,14 +52,9 @@ static void spi_start() {
     DDRB |= (1 << DDB5);
 
     /*
-     * Enable timer interrupt vector
+     * Set timer clock divider to 1/1
      */
-    TIMSK0 = (1 << TOIE0);
-
-    /*
-     * Reset timer counter to zero
-     */
-    TCNT1 = 0;
+    TCCR1B = (1 << CS10);
 
     /*
      * Set timer interval
@@ -67,14 +62,19 @@ static void spi_start() {
     OCR1A = TIMER1_INTERVAL;
 
     /*
-     * Set timer clock divider to 1/1
+     * Reset timer counter to zero
      */
-    TCCR1B = (1 << CS10);
+    TCNT1 = 0;
+
+    /*
+     * Enable timer interrupt vector for match on OCR1A
+     */
+    TIMSK0 = (1 << OCIE1A);
 }
 
 static void spi_end() {
     DDRB   &= ~((1 << DDB5) | (1 << DDB4) | (1 << DDB3));
-    TIMSK0 &= ~(1 << TOIE0);
+    TIMSK0 &= ~(1 << OCIE1A);
     TCNT1   = 0;
     OCR1A   = TIMER1_INTERVAL;
     TCCR1B  = (1 << CS10);
diff --git a/bin/main.c b/bin/main.c
index c25dedc..e99b635 100644
--- a/bin/main.c
+++ b/bin/main.c
@@ -29,8 +29,6 @@ int main(int argc, char **argv) {
 
     tabby_printer_packet header;
 
-    uint16_t checksum;
-
     uint8_t body[TABBY_PRINTER_MAX_PACKET_SIZE];
 
     if (argc != 2) {
@@ -45,7 +43,7 @@ int main(int argc, char **argv) {
     }
 
     while (1) {
-        status = tabby_printer_packet_recv(fd, &header, &body, &checksum);
+        status = tabby_printer_packet_recv(fd, &header, &body);
 
         if (status < 0) {
             fprintf(stderr, "%s: %s: %s\n",