Cleaner solution to the PrinterHost data send routine problem of embedded NULLs ...

diff --git a/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.c b/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.c
index 03d3070..87651e9 100644 (file)
--- a/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.c
+++ b/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.c
@@ -33,18 +33,18 @@
 /** Sends the given data directly to the printer via the data endpoints, for the sending of print commands in printer\r
  *  languages accepted by the attached printer (e.g. PCL).\r
  *\r
- *  \param[in] PrinterCommands  Pointer to the input buffer containing the printer data to send\r
+ *  \param[in] PrinterCommands  Pointer to a structure containing the commands and length of the data to send\r
  *\r
  *  \return A value from the Pipe_Stream_RW_ErrorCodes_t enum\r
  */\r
-uint8_t Printer_SendData(char* PrinterCommands, uint16_t DataLength)\r
+uint8_t Printer_SendData(Printer_Data_t* PrinterCommands)\r
 {\r
        uint8_t ErrorCode;\r
 \r
        Pipe_SelectPipe(PRINTER_DATA_OUT_PIPE);\r
        Pipe_Unfreeze();\r
        \r
-       if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands, DataLength)) != PIPE_RWSTREAM_NoError)\r
+       if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands->Data, PrinterCommands->Length)) != PIPE_RWSTREAM_NoError)\r
          return ErrorCode;\r
 \r
        Pipe_ClearOUT();\r

diff --git a/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.h b/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.h
index b296d86..9ba6d4d 100644 (file)
--- a/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.h
+++ b/Demos/Host/Incomplete/PrinterHost/Lib/PrinterCommands.h
@@ -53,8 +53,15 @@
                /** Pipe number of the Printer data OUT pipe */\r
                #define PRINTER_DATA_OUT_PIPE        2\r
                \r
+       /* Type Defines: */\r
+               typedef struct\r
+               {\r
+                       char*    Data;\r
+                       uint16_t Length;\r
+               } Printer_Data_t;\r
+               \r
        /* Function Prototypes: */\r
-               uint8_t Printer_SendData(char* PrinterCommands, uint16_t DataLength);\r
+               uint8_t Printer_SendData(Printer_Data_t* PrinterCommands);\r
                uint8_t Printer_GetDeviceID(char* DeviceIDString, uint8_t BufferSize);\r
                uint8_t Printer_GetPortStatus(uint8_t* PortStatus);\r
                uint8_t Printer_SoftReset(void);\r

diff --git a/Demos/Host/Incomplete/PrinterHost/PrinterHost.c b/Demos/Host/Incomplete/PrinterHost/PrinterHost.c
index bff5e20..9eb05ab 100644 (file)
--- a/Demos/Host/Incomplete/PrinterHost/PrinterHost.c
+++ b/Demos/Host/Incomplete/PrinterHost/PrinterHost.c
@@ -204,12 +204,16 @@ void USB_Printer_Host(void)
                        /* Indicate device busy via the status LEDs */\r
                        LEDs_SetAllLEDs(LEDMASK_USB_BUSY);\r
                \r
-                       char PCL_Test_Page[]   = "\033%-12345X\033E LUFA PCL Test Page \033E\033%-12345X";\r
-//                     char ESCP2_Test_Page[] =  "\033@\033i\001\033X\001\060\000\r\nLUFA ESCP/2 Test Page\r\n";\r
-\r
-                       printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), (sizeof(PCL_Test_Page) - 1));\r
+                       Printer_Data_t TestPageData =\r
+                               {\r
+                                       "\033%-12345X\033E LUFA PCL Test Page \033E\033%-12345X",\r
+//                                     "\033@\033i\001\033X\001\060\000\r\nLUFA ESCP/2 Test Page\r\n",\r
+                                       (sizeof(TestPageData.Data) - 1)\r
+                               };\r
+               \r
+                       printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageData.Length);\r
 \r
-                       if ((ErrorCode = Printer_SendData(PCL_Test_Page, (sizeof(PCL_Test_Page) - 1))) != PIPE_RWSTREAM_NoError)\r
+                       if ((ErrorCode = Printer_SendData(&TestPageData)) != PIPE_RWSTREAM_NoError)\r
                        {\r
                                puts_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n"));\r
                                printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);\r