Only superficial changes, to get rid of compiler warnings

This commit is contained in:
martin.holst@gmail.com 2013-09-19 19:53:09 +00:00
commit 42daa759c1
3 changed files with 64 additions and 61 deletions

View file

@ -67,6 +67,58 @@ int CmdQuit(const char *Cmd)
exit(0);
return 0;
}
/**
* @brief This method should be called when sending a new command to the pm3. In case any old
* responses from previous commands are stored in the buffer, a call to this method should clear them.
* A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
* operation. Right now we'll just have to live with this.
*/
void clearCommandBuffer()
{
//This is a very simple operation
cmd_tail = cmd_head;
}
/**
* @brief storeCommand stores a USB command in a circular buffer
* @param UC
*/
void storeCommand(UsbCommand *command)
{
if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
{
//If these two are equal, we're about to overwrite in the
// circular buffer.
PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
}
//Store the command at the 'head' location
UsbCommand* destination = &cmdBuffer[cmd_head];
memcpy(destination, command, sizeof(UsbCommand));
cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
}
/**
* @brief getCommand gets a command from an internal circular buffer.
* @param response location to write command
* @return 1 if response was returned, 0 if nothing has been received
*/
int getCommand(UsbCommand* response)
{
//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.
@ -213,54 +265,3 @@ void UsbCommandReceived(UsbCommand *UC)
}
/**
* @brief This method should be called when sending a new command to the pm3. In case any old
* responses from previous commands are stored in the buffer, a call to this method should clear them.
* A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
* operation. Right now we'll just have to live with this.
*/
void clearCommandBuffer()
{
//This is a very simple operation
cmd_tail = cmd_head;
}
/**
* @brief storeCommand stores a USB command in a circular buffer
* @param UC
*/
void storeCommand(UsbCommand *command)
{
if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
{
//If these two are equal, we're about to overwrite in the
// circular buffer.
PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
}
//Store the command at the 'head' location
UsbCommand* destination = &cmdBuffer[cmd_head];
memcpy(destination, command, sizeof(UsbCommand));
cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
}
/**
* @brief getCommand gets a command from an internal circular buffer.
* @param response location to write command
* @return 1 if response was returned, 0 if nothing has been received
*/
int getCommand(UsbCommand* response)
{
//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;
}