SO FREAKING ANNOYINGLY CLOSE

avr/send.c

@@ -152,19 +152,24 @@ static uint16_t checksum() {
 }
 
 int main() {
-    uint16_t sum = 0;
+    uint16_t sum = 0,
+             c;
 
     uart_init();
 
     sei();
 
     while (1) {
-        uint8_t c;
+        uart_putchar('O', NULL);
 
-        while (flags != TABBY_SEND_READING) {
-            sleep_mode();
+        c = uart_getchar(NULL);
+
+        if (c == 'K') {
+            break;
         }
+    }
 
+    while (1) {
         if (flags & TABBY_SEND_COMPLETE) {
             uart_putchar(device, NULL);
             uart_putchar(status, NULL);
@@ -172,6 +177,8 @@ int main() {
             flags = TABBY_SEND_READING;
         }
 
+        while (flags != TABBY_SEND_READING);
+
         c = uart_getchar(NULL);
 
         switch (i) {
@@ -250,9 +257,10 @@ int main() {
                 } else if (b == header.size + 1) {
                     sum |= c << 8;
 
+                    i = 0;
+                    b = 0;
+
                     if (sum == checksum()) {
-                        i      = 0;
-                        b      = 0;
                         flags |= TABBY_SEND_BUFFERED;
 
                         spi_start();

bin/main.c

@@ -25,11 +25,11 @@ static void usage(int argc, char **argv, char *message, ...) {
 }
 
 int main(int argc, char **argv) {
-    int fd, status;
+    int fd;
 
     tabby_printer_packet header;
 
-    uint8_t body[TABBY_PRINTER_MAX_PACKET_SIZE];
+    uint16_t response;
 
     if (argc != 2) {
         usage(argc, argv, "No device specified");
@@ -42,19 +42,27 @@ int main(int argc, char **argv) {
         goto error_link_open;
     }
 
-    while (1) {
-        status = tabby_printer_packet_recv(fd, &header, &body);
+    header.preamble[0] = 0x88;
+    header.preamble[1] = 0x33;
+    header.type        = 0x0f;
+    header.compression = 0;
+    header.size        = 0;
 
-        if (status < 0) {
-            fprintf(stderr, "%s: %s: %s\n",
-                argv[0], "tabby_printer_packet_recv()", strerror(errno));
+    printf("Waiting for AVR to reboot after CTS\n");
 
-            continue;
-        }
+    sleep(1);
 
-        if (header.type == 0x04) {
-            write(1, body, header.size);
-        }
+    printf("Initializing link\n");
+
+    tabby_printer_link_init(fd);
+
+    printf("Interrogating printer\n");
+
+    if (tabby_printer_packet_send(fd, &header, NULL, &response) < 0) {
+        fprintf(stderr, "%s: %s: %s: %s\n",
+            argv[0], "tabby_printer_packet_send()", argv[1], strerror(errno));
+    } else {
+        printf("Got response code %04x\n", response);
     }
 
     tabby_link_close(fd);