void vscp_handlePreActiveState(void)
{
if ( vscp_imsg.flags & VSCP_VALID_MSG ) { // incoming event?
if ((VSCP_CLASS1_PROTOCOL == vscp_imsg.vscp_class) &&
(VSCP_TYPE_PROTOCOL_SET_NICKNAME == vscp_imsg.vscp_type) &&
(VSCP_ADDRESS_FREE == vscp_imsg.data[ 0 ])) {
// Assign nickname
vscp_nickname = vscp_imsg.data[ 1 ];
vscp_writeNicknamePermanent(vscp_nickname);
vscp_setSegmentCRC(0x40);
// Go active state
vscp_node_state = VSCP_STATE_ACTIVE;
}
} else {
// Check for time out
if (vscp_timer > VSCP_PROBE_TIMEOUT) {
// Yes, we have a timeout
vscp_nickname = VSCP_ADDRESS_FREE;
vscp_writeNicknamePermanent(VSCP_ADDRESS_FREE);
vscp_init();
}
}
}
///////////////////////////////////////////////////////////////////////////////
// vscp_preactive
//
void vscp_handleReactive( void )
{
if ( E_OK == VSCP_deqMsgRx( &RxMsg)) { // incoming message?
// Yes, incoming message
if (( VSCP_CLASS1_PROTOCOL == RxMsg.vscp_class) &&
( VSCP_TYPE_PROTOCOL_SET_NICKNAME == RxMsg.vscp_type) &&
( VSCP_ADDRESS_FREE == RxMsg.data[0])) {
// Assign nickname
vscp_nickname = RxMsg.data[2];
vscp_setNickname( vscp_nickname);
vscp_setSegmentCRC( VSCP_CRC_DEFAULT);// segment code (non server segment )
vscp_init(); // Clear Activation, with a Right Asigned NICKNAME
}
}
else {
// Check for time out
if ( vscp_timer > VSCP_PROBE_TIMEOUT) {
// Yes, we have a timeout
vscp_nickname = VSCP_ADDRESS_FREE;
vscp_setNickname( VSCP_ADDRESS_FREE);
vscp_init(); //No answer from Server, Clear Restart with VSCP_ADDRESS_FREE
}
}
}
///////////////////////////////////////////////////////////////////////////////
// vscp_rcv_set_nickname
//
void vscp_handleSetNickname( void)
{
if (( 2 == RxMsg.length) &&
( vscp_nickname == RxMsg.data[0])) {
// Yes, we are addressed
vscp_nickname = RxMsg.data[1];
vscp_setNickname( vscp_nickname);
vscp_setSegmentCRC( VSCP_CRC_DEFAULT);
}
}
void vscp_handleSetNickname(void)
{
if ((2 == (vscp_imsg.flags & 0x0f)) &&
(vscp_nickname == vscp_imsg.data[ 0 ])) {
// Yes, we are addressed
vscp_nickname = vscp_imsg.data[ 1 ];
vscp_writeNicknamePermanent(vscp_nickname);
vscp_setSegmentCRC(0x40);
}
}
void vscp_handleHeartbeat(void)
{
if ( !vscp_getSegmentCRC() ) {
if ( ( 5 == (vscp_imsg.flags & 0x0f ) ) &&
(vscp_getSegmentCRC() != vscp_imsg.data[ 0 ])) {
// Stored CRC are different than received
// We must be on a different segment
vscp_setSegmentCRC(vscp_imsg.data[ 0 ]);
// Introduce ourself in the proper way and start from the beginning
vscp_nickname = VSCP_ADDRESS_FREE;
vscp_writeNicknamePermanent(VSCP_ADDRESS_FREE);
vscp_node_state = VSCP_STATE_INIT;
}
}
else {
// First heartbeat seen by this node
vscp_setSegmentCRC(vscp_imsg.data[ 0 ]);
}
}
///////////////////////////////////////////////////////////////////////////////
// vscp_rcv_heartbeat
//
void vscp_handleHeartbeat( void )
{
if ((5 == RxMsg.length)&&
( vscp_getSegmentCRC()!= RxMsg.data[0])) {
// Stored CRC are different than received
// We must be on a different segment
vscp_setSegmentCRC( RxMsg.data[0]);
// Introduce ourself in the proper way and start from the beginning
vscp_nickname = VSCP_ADDRESS_FREE;
vscp_setNickname( VSCP_ADDRESS_FREE);
vscp_init(); // Clear Restart with VSCP_ADDRESS_FREE
}
}
///////////////////////////////////////////////////////////////////////////////
// vscp_check_pstorage
//
// Check control position integrity and restore EEPROM
// if invalid.
//
int08_t vscp_check_pstorage( void )
{
// controlbyte == 01xxxxxx means initialized
// everything else is uninitialized
if ( VSCP_CRC_FREE != vscp_getSegmentCRC()) {
return TRUE;
}
// No nickname yet.
vscp_setNickname( VSCP_ADDRESS_FREE);
// No segment CRC yet.
vscp_setSegmentCRC( VSCP_CRC_FREE);
vscp_setControlByte( VSCP_CONTROL_STARTUP); // Initial startup, write allowed
return FALSE;
}
int8_t vscp_check_pstorage(void)
{
// controlbyte == 01xxxxxx means initialized
// everything else is uninitialized
if ((vscp_getSegmentCRC() & 0xc0) == 0x40) {
return TRUE;
}
// No nickname yet.
vscp_writeNicknamePermanent(0xff);
// No segment CRC yet.
vscp_setSegmentCRC(0x00);
// Initial startup
// write allowed
vscp_setControlByte(0xA0);
return FALSE;
}
/*!
* @brief verify functionality of the custom defined vscp functions
* vscp_firmware.h @ line 457
*/
void test_vscp_externals(){
uint8_t FlashValue8; /*! gets an 8-bit vscp data field from permanent storage */
uint8_t val; /*! assign a value to write to buffer -> permanent storage */
printf("Testing vscp_functions\r\n");
val = 0x11;
vscp_writeNicknamePermanent(val);
FlashValue8 = vscp_readNicknamePermanent();
printf("Read %d dec, %x hex\r\n", FlashValue8, FlashValue8);
val = 0x22;
vscp_setSegmentCRC(val);
FlashValue8 = vscp_getSegmentCRC();
printf("Read %d dec, %x hex\r\n", FlashValue8, FlashValue8);
val = 0x33;
vscp_setControlByte(val);
FlashValue8 = vscp_getControlByte();
printf("Read %d dec, %x hex\r\n", FlashValue8, FlashValue8);
}
///////////////////////////////////////////////////////////////////////////////
// vscp_handleProbeState
//
void vscp_handleProbeState( void )
{
switch ( vscp_node_substate ) {
case VSCP_SUBSTATE_NONE:
if ( VSCP_ADDRESS_FREE != vscp_probe_address ) {
SendMsg.priority = VSCP_PRIORITY_HIGH;
SendMsg.vscp_class = VSCP_CLASS1_PROTOCOL;
SendMsg.vscp_type = VSCP_TYPE_PROTOCOL_NEW_NODE_ONLINE;
SendMsg.length = 1 ;
SendMsg.data[ 0 ] = vscp_probe_address;
// send the probe
VSCP_enqMsgTx( &SendMsg, FALSE);
vscp_node_substate = VSCP_SUBSTATE_INIT_PROBE_SENT;
vscp_timer = 0;
}
else {
// No free address -> error
vscp_node_state = VSCP_STATE_ERROR;
// Tell system we are giving up
SendMsg.priority = VSCP_PRIORITY_HIGH;
SendMsg.vscp_class = VSCP_CLASS1_PROTOCOL;
SendMsg.vscp_type = VSCP_TYPE_PROTOCOL_PROBE_ACK;
SendMsg.data[ 0 ] = 0xff; // we are unassigned
SendMsg.length = 1 ;
// send the error event
VSCP_enqMsgTx( &SendMsg, FALSE);
}
break;
case VSCP_SUBSTATE_INIT_PROBE_SENT:
if ( E_OK == VSCP_deqMsgRx( &RxMsg)) { // incoming message?
// Yes, incoming message
if ( ( VSCP_CLASS1_PROTOCOL == RxMsg.vscp_class ) &&
( VSCP_TYPE_PROTOCOL_PROBE_ACK == RxMsg.vscp_type ) ) {
// Yes it was an ack from the segment master or a node
if ( !vscp_probe_address ) {
// Master controller answered
// wait for address
vscp_node_state = VSCP_STATE_PREACTIVE;
vscp_timer = 0; // reset timer
}
else {
// node answered, try next address
vscp_probe_address++;
vscp_node_substate = VSCP_SUBSTATE_NONE;
vscp_probe_cnt = 0;
}
}
}
else {
if ( vscp_timer > VSCP_PROBE_TIMEOUT ) { // Check for timeout
vscp_probe_cnt++; // Another timeout. Repet each probe four times ( 4 * 500ms = 2 S)
if ( vscp_probe_cnt >= 4) {
// Yes we have a timeout, no answer received
if ( !vscp_probe_address) { // master controller probe?
// No master controler on segment, try next node
vscp_probe_address++;
vscp_node_substate = VSCP_SUBSTATE_NONE;
}
else {
// No answer, We have found a free address - use it
vscp_nickname = vscp_probe_address;
vscp_setNickname( vscp_nickname);
vscp_setSegmentCRC( VSCP_CRC_DEFAULT);// segment code (non server segment )
vscp_init(); // Clear Activation, with a Right Discovered NICKNAME
}
}
else {
vscp_node_substate = VSCP_SUBSTATE_NONE;
}
} // Timeout
}
break;
case VSCP_SUBSTATE_INIT_PROBE_ACK:
// Developed in function before
break;
default:
vscp_node_substate = VSCP_SUBSTATE_NONE;
break;
}
}
void vscp_handleProbeState(void)
{
switch (vscp_node_substate) {
case VSCP_SUBSTATE_NONE:
if (VSCP_ADDRESS_FREE != vscp_probe_address) {
vscp_omsg.flags = VSCP_VALID_MSG + 1; // one databyte
vscp_omsg.priority = VSCP_PRIORITY_HIGH;
vscp_omsg.vscp_class = VSCP_CLASS1_PROTOCOL;
vscp_omsg.vscp_type = VSCP_TYPE_PROTOCOL_NEW_NODE_ONLINE;
vscp_omsg.data[ 0 ] = vscp_probe_address;
// send the probe
vscp_sendEvent();
vscp_node_substate = VSCP_SUBSTATE_INIT_PROBE_SENT;
vscp_timer = 0;
} else {
// No free address -> error
vscp_node_state = VSCP_STATE_ERROR;
// Tell system we are giving up
vscp_omsg.flags = VSCP_VALID_MSG + 1; // one databyte
vscp_omsg.data[ 0 ] = 0xff; // we are unassigned
vscp_omsg.priority = VSCP_PRIORITY_LOW;
vscp_omsg.vscp_class = VSCP_CLASS1_PROTOCOL;
vscp_omsg.vscp_type = VSCP_TYPE_PROTOCOL_PROBE_ACK;
// send the error event
vscp_sendEvent();
}
break;
case VSCP_SUBSTATE_INIT_PROBE_SENT:
if (vscp_imsg.flags & VSCP_VALID_MSG) { // incoming event?
// Yes, incoming event
if ((VSCP_CLASS1_PROTOCOL == vscp_imsg.vscp_class) &&
(VSCP_TYPE_PROTOCOL_PROBE_ACK == vscp_imsg.vscp_type)) {
// Yes it was an ack from the segment master or a node
if (0 == vscp_probe_address) {
// Master controller answered
// wait for address
vscp_node_state = VSCP_STATE_PREACTIVE;
vscp_timer = 0; // reset timer
} else {
// node answered, try next address
vscp_probe_address++;
vscp_node_substate = VSCP_SUBSTATE_NONE;
vscp_probe_cnt = 0;
}
}
} else {
if (vscp_timer > VSCP_PROBE_TIMEOUT) { // Check for timeout
vscp_probe_cnt++; // Another timeout
if (vscp_probe_cnt >= VSCP_PROBE_TIMEOUT_COUNT) {
// Yes we have a timeout
if (0 == vscp_probe_address) { // master controller probe?
// No master controler on segment, try next node
vscp_probe_address++;
vscp_node_substate = VSCP_SUBSTATE_NONE;
vscp_timer = 0;
vscp_probe_cnt = 0;
} else {
// We have found a free address - use it
vscp_nickname = vscp_probe_address;
vscp_node_state = VSCP_STATE_ACTIVE;
vscp_node_substate = VSCP_SUBSTATE_NONE;
vscp_writeNicknamePermanent(vscp_nickname);
vscp_setSegmentCRC(0x40); // segment code (non server segment )
// Report success
vscp_probe_cnt = 0;
vscp_goActiveState();
}
} else {
vscp_node_substate = VSCP_SUBSTATE_NONE;
}
} // Timeout
}
break;
case VSCP_SUBSTATE_INIT_PROBE_ACK:
break;
default:
vscp_node_substate = VSCP_SUBSTATE_NONE;
break;
}
vscp_imsg.flags = 0;
}