+void set_echo() {
+ if (my_strncmp("CHO ON", (char*)sci_rx_buf+1, 6))
+ sci_echo = 1;
+ else if (my_strncmp("CHO OFF", (char*)sci_rx_buf+1, 7))
+ sci_echo = 0;
+ else
+ unknown_command();
+}
+
+void moo() {
+ if (!my_strncmp("OO", (char*)sci_rx_buf+1, 2)) {
+ unknown_command();
+ return;
+ }
+ send_string(
+" ____________" CRLF
+" |__________|" CRLF
+" / /\\" CRLF
+" / U C C / \\" CRLF
+" /___________/___/|" CRLF
+" | | |" CRLF
+" | ==\\ /== | |" CRLF
+" | O O | \\ \\ |" CRLF
+" | < | \\ \\|" CRLF
+" /| | \\ \\" CRLF
+" / | \\_____/ | / /" CRLF
+" / /| | / /|" CRLF
+"/||\\| | /||\\/" CRLF
+" -------------| " CRLF
+" | | | | " CRLF
+" <__/ \\__>" CRLF
+"" CRLF
+" ... Where's the cheese?" CRLF
+ );
+}
+
+void help() {
+ send_string(
+ "Valid commands are:" CRLF
+ " ABOUT ROM information" CRLF
+ " PING pongs" CRLF
+ " ECHO {ON|OFF} turn echo on or off" CRLF
+ " Vnn vend an item" CRLF
+ " VALL vend all items" CRLF
+ " DXXXXXXXXXX show a message on the display" CRLF
+ " B[nn] beep for a duration nn (optional)" CRLF
+ " S[...] query all internal switch states" CRLF
+ " H[...] this help screen" CRLF
+ " GETROM download the ROM source code using xmodem" CRLF
+ "Comments start with a #" CRLF
+ );
+}
+
+extern const char _rom_src_data[];
+extern const u16 _rom_src_len;
+void getrom() {
+ if (!my_strncmp("ETROM", (char*)sci_rx_buf+1, 5)) {
+ unknown_command();
+ return;
+ }
+ char s[4];
+ send_string("Writing to serial port (maybe). Size is 0x");
+ send_string(u82hex(_rom_src_len >> 8));
+ send_string(u82hex(_rom_src_len & 0xff));
+ send_string("@0x");
+ send_string(u82hex((u16)(&_rom_src_data) >> 8));
+ send_string(u82hex((u16)(&_rom_src_data) & 0xff));
+ send_string(" with signature ");
+ s[0] = _rom_src_data[0];
+ s[1] = _rom_src_data[1];
+ s[2] = _rom_src_data[2];
+ s[3] = '\0';
+ send_string(s);
+ send_string(CRLF " Type YES to download rom.tar.bz2 via XMODEM: ");
+ msg_clr();
+ while (!sci_have_packet); /* spin */
+ if (!my_strncmp("YES", (char*)sci_rx_buf, 3)) {
+ send_string(CRLF "Transfer cancelled." CRLF);
+ return;
+ }
+
+ sci_init();
+ sci_doing_xmodem = 1;
+ if (!xmodem_init_xfer()) {
+ sci_doing_xmodem = 0;
+ send_string("XMODEM init failed. Nobody's listening :(" CRLF);
+ return;
+ }
+ char *p = (char*)_rom_src_data;
+ char *end = (char*)_rom_src_data+_rom_src_len;
+ bool aborted = 0;
+ while (1) {
+ if (p + 128 > end) {
+ /* send partial packet */
+ if (!xmodem_send_packet((char*)p, end-p)) aborted = 1;
+ break;
+ } if ((u16)p == 0xb600) {
+ /* we have an eeprom here. skip it. */
+ p += 0x0200;
+ continue;
+ } else if (!xmodem_send_packet((char*)p, 128)) {
+ aborted = 1;
+ break;
+ }
+ p += 128;
+ }
+
+ xmodem_finish_xfer();
+ sci_doing_xmodem = 0;
+ if (aborted)
+ send_string(CRLF "Transfer aborted." CRLF);
+ else
+ send_string(CRLF "Transfer complete." CRLF);
+}
+
+void quit() {
+ if (my_strncmp("UIT", (char*)sci_rx_buf+1, 3))
+ send_string("013 You can't quit you doofus." CRLF);
+ else
+ unknown_command();
+}
+
+//SHA1_CTX ctx;
+//u8 sha1_digest[SHA1_SIGNATURE_SIZE];
+