[avrdude-dev] Patch to support updated buspirate firmware in avrdude

[Kari Knuuttila]

Hi,

BusPirate uart interface saw some updates in recent versions which broke 
the avrdude support.

This patch fixes:
* Recognition of command input line.
* 'y' answer to "Are you sure" question when performing reset.

Patch is backwards compatible.
Tested with latest BusPirate Fw 5.3 (new UI) and FW 4.3 (old UI).

-Kari Knuuttila


---
Index: buspirate.c
===================================================================
--- buspirate.c (revision 945)
+++ buspirate.c (working copy)
@@ -257,7 +257,11 @@
 static int buspirate_is_prompt(char *str)
 {
        /* Prompt ends with '>' all other input probably ends with '\n' */
-       return (str[strlen(str) - 1] == '>');
+    if( str[strlen(str) - 1] == '>' ||
+        str[strlen(str) - 2] == '>' )
+        return 1;
+    else
+        return 0;
 }

 static int buspirate_expect(struct programmer_t *pgm, char *send,
@@ -536,6 +540,7 @@
 static void buspirate_enable(struct programmer_t *pgm)
 {
        unsigned char *reset_str = "#\n";
+       unsigned char *accept_str = "y\n";
        char *rcvd;
        int fw_v1 = 0, fw_v2 = 0;
        int rc, print_banner = 0;
@@ -559,6 +564,9 @@
                        buspirate_enable(pgm);
                        return;
                }
+               if (strncmp(rcvd, "Are you sure?",13) == 0) {
+                       buspirate_send_bin(pgm, accept_str, 
strlen(accept_str));
+               }
                if (strncmp(rcvd, "RESET", 5) == 0) {
                        print_banner = 1;
                        continue;