USB2SerialMux/firmware/command_ctrl.c
2016-08-23 09:33:26 +02:00

146 lines
3.5 KiB
C
Executable file

/*
* Author: klaute -Kai Lauterbach - @kailauterbach - me@klaute.de
* Date: 08/2016
* License: GPLv3
*/
/*****************************************************************************/
#include "command_ctrl.h"
#include "command_config.h"
// include user specific command control configuration and function definition
#include "command_config.h"
#include "command_functions.c"
/*****************************************************************************/
uint8_t cc_state = CC_STATE_READ_SOM1;
uint8_t cc_cmd_to_call = CC_CMD_NO_CMD;
uint8_t cc_cmd_received_correct = MSG_INCOMPLETE;
uint8_t cc_cmd_data_read_cnt = 0;
/*****************************************************************************/
void cc_init()
{
cc_state = CC_STATE_READ_SOM1;
cc_cmd_to_call = CC_CMD_NO_CMD;
cc_cmd_data_read_cnt = 0;
cc_cmd_received_correct = MSG_INCOMPLETE;
}
/*****************************************************************************/
void cc_abort()
{
// send abort message, then init
char* tmp = " ";
sprintf(tmp, "%c%c%c%c%c", MSG_SOM1, MSG_SOM2,
MSG_TYPE_ANSWER_NOK,
MSG_EOM1, MSG_EOM2);
USB_serialStreamWriteC(tmp, strlen(tmp));
cc_init();
}
/*****************************************************************************/
void cc_processData(uint8_t c)
{
switch (cc_state)
{
//*********************************//
case CC_STATE_READ_SOM1:;
if (c == MSG_SOM1)
cc_state = CC_STATE_READ_SOM2;
else
cc_abort();
break;
//*********************************//
case CC_STATE_READ_SOM2:;
if (c == MSG_SOM2)
cc_state = CC_STATE_READ_CMD;
else
cc_abort();
break;
//*********************************//
case CC_STATE_READ_CMD:;
for (uint8_t i = 0; i < sizeof(cc_commands)/sizeof(uint8_t); i++)
{
if (cc_commands[i] == c)
{
if (cc_cmd_data_to_read[i] > 0)
cc_state = CC_STATE_READ_DATA;
else
cc_state = CC_STATE_READ_EOM1;
cc_cmd_to_call = i; // remember the index of command to call
break; // break the loop
}
}
break;
//*********************************//
case CC_STATE_READ_DATA:;
// write the variable c to the input buffer
cc_read_data[cc_cmd_data_read_cnt] = c;
if (cc_cmd_data_read_cnt >= cc_cmd_data_to_read[cc_cmd_to_call]-1)
{
cc_state = CC_STATE_READ_EOM1;
}
cc_cmd_data_read_cnt++;
break;
//*********************************//
case CC_STATE_READ_EOM1:;
if (c == MSG_EOM1)
cc_state = CC_STATE_READ_EOM2;
else
cc_abort();
break;
//*********************************//
case CC_STATE_READ_EOM2:;
if (c == MSG_EOM2)
{
cc_cmd_received_correct = MSG_COMPLETE;
} else
cc_abort();
break;
default:
cc_abort();
}
//*********************************//
if (cc_cmd_received_correct == MSG_COMPLETE)
{
// call the function using the received data
(*cc_cmd_functions[cc_cmd_to_call])();
// clear the read buffer
cc_clearReadDataBuffer();
cc_init();
}
}
/*****************************************************************************/
void cc_clearReadDataBuffer()
{
for (uint8_t i = 0; i < CC_READ_DATA_MAX; i++)
{
cc_read_data[i] = 0x00;
}
}
/*****************************************************************************/