- //If head == tail, there's nothing to read, or if we just got initialized
- if(cmd_head == cmd_tail){
- return 0;
- }
- //Pick out the next unread command
- UsbCommand* last_unread = &cmdBuffer[cmd_tail];
- memcpy(response, last_unread, sizeof(UsbCommand));
- //Increment tail - this is a circular buffer, so modulo buffer size
- cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
-
- return 1;
-
-}
-
-/**
- * Waits for a certain response type. This method waits for a maximum of
- * ms_timeout milliseconds for a specified response command.
- *@brief WaitForResponseTimeout
- * @param cmd command to wait for
- * @param response struct to copy received command into.
- * @param ms_timeout
- * @return true if command was returned, otherwise false
- */
-bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
-
- UsbCommand resp;
-
- if (response == NULL)
- response = &resp;
-
-
- // Wait until the command is received
- for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
-
- while(getCommand(response)) {
- if(response->cmd == cmd){
- return true;
- }
- }
- msleep(10); // XXX ugh
- if (dm_seconds == 200) { // Two seconds elapsed
- PrintAndLog("Waiting for a response from the proxmark...");
- PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
- }
- }
- return false;
-}
-
-bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
- return WaitForResponseTimeout(cmd,response,-1);