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);
}
