/***
*
* void tick()
* checks if there is a complete transmission and calls the users callback function
*
***/
void megaRF::tick()
{
rfm12_tick();
uint8_t i=0;
if(rfm12_rx_status()==STATUS_COMPLETE){
extbuffer = rfm12_rx_buffer();
for(i=0;i<rfm12_rx_len();i++)
{
intbuffer[i] = *extbuffer;
extbuffer++;
}
intbuffer[i]='\0';
packetLength=i;
rfm12_rx_clear();
// don't bother if user hasn't registered a callback
if(!user_onReceive){
}
else{
user_onReceive();
}
}
rfm12_tick();
return;
}
// Freigeben des Empfangspuffers für neue Daten
void rfm12_receive_clear()
{
rfm12_receive_buffer.address = 0;
rfm12_receive_buffer.len = 0;
rfm12_receive_state = receive_idle;
rfm12_rx_clear(); // unterlagerten Puffer wieder freigeben
}
int main(void)
{
timeCount = 0;
hardwareInit();
uart0_init(BAUD_SETTING);
/* Initialise timer to divide by 1025, giving 32ms time tick */
timer0Init(0,5);
rfm12_init();
wdtInit();
sei();
indx = 0;
for(;;)
{
wdt_reset();
uint8_t sendMessage = false;
uint16_t character = uart0_getc();
/* Wait for a serial incoming message to be built. */
if (character != UART_NO_DATA)
{
inBuf[indx++] = (uint8_t)(character & 0xFF);
/* Signal to transmit if a CR was received, or string too long. */
sendMessage = ((indx > MAX_MESSAGE) || (character == 0x0D));
}
/* Send a transmission if message is ready to send, or something was
received and time waited is too long. */
if (sendMessage || (timeCount++ > TIMEOUT))
{
/* Wait for the transmit buffer to be freed and message loaded. */
if ((indx > 0) && (rfm12_tx(indx, 0, inBuf) != RFM12_TX_OCCUPIED))
indx = 0;
timeCount = 0;
}
rfm12_tick();
/* If an RF incoming message has been received, take it from the buffer one
character at a time and transmit via the serial port. */
if (rfm12_rx_status() == STATUS_COMPLETE)
{
uint8_t *bufferContents = rfm12_rx_buffer();
uint8_t messageLength = rfm12_rx_len();
uint8_t i;
for (i=0;i<messageLength;i++)
{
uart0_putc(bufferContents[i]);
}
/* Clear the "in use" status of the receive buffer to be available for
rfm12lib. */
rfm12_rx_clear();
}
}
}
int ReceiveFrame(char *Rframe = 0) {
int retval;
uint8_t *bufptr;
if(rfm12_rx_status() == STATUS_COMPLETE){
put_string("\r\nPhysical layer data detected\r\n");
if(Rframe != 0) {
bufptr = rfm12_rx_buffer();
for(int k = 0; k < (rfm12_rx_len()); k++) {
Rframe[k] = bufptr[k];
}
Rframe[rfm12_rx_len()] = '\0';
rfm12_rx_clear();
put_string("\r\nPhysical layer received data: ");
put_string(Rframe);
}
retval = 1;
}
else {
retval = 0;
}
return retval;
}
bufferStruct checkReceiveData(bufferStruct buffer){
rfm12_tick(); //periodic tick function - call that one once in a while
switch(state){
case STATE_TIMEOUT:
#if STATE_UART_DEBUG >= 2
uart_putstr ("tiOu\r\n");
#endif
++timoutCounter;
if(timoutCounter > 5){
#if STATE_UART_DEBUG >= 2
uart_putstr ("tiOuOverl\r\n");
#endif
state = STATE_FREE;
stopTimer();
timoutCounter = 0;
} else {
processNack();
}
break;
case STATE_SENDING_ACK:
if(rfm12_tx_status() == STATUS_FREE){
state = STATE_SENDING_DATA;
#if STATE_UART_DEBUG >= 2
uart_putstr ("finSeAck\r\n");
#endif
bufferStruct result;
result.bufferLength = getPayloadLength(backupData.bufferLength, backupData.buffer);
memcpy(result.buffer, getPayload(backupData.bufferLength, backupData.buffer), result.bufferLength);
uart_putc('%');
uart_putc(result.bufferLength);
uart_putc('%');
for(uint8_t i = 0; i < result.bufferLength; ++i){
uart_putc(result.buffer[i]);
}
uart_putc('%');
return result;
}
case STATE_SENDING_DATA:
if(rfm12_tx_status() == STATUS_FREE){
#if STATE_UART_DEBUG >= 2
uart_putstr ("finSeData\r\n");
#endif
state = STATE_FREE;
}
}
//uart_putstr (rfm12_rx_status());
if (rfm12_rx_status() == STATUS_COMPLETE){
bufferStruct tempBuffer;
tempBuffer.bufferLength = rfm12_rx_len();
memcpy(tempBuffer.buffer, rfm12_rx_buffer(), tempBuffer.bufferLength);
if(validateCrc(tempBuffer)){
#if STATE_UART_DEBUG >= 2
uart_putstr ("crcAck\r\n");
#endif
} else {
#if STATE_UART_DEBUG >= 2
uart_putstr ("crcNack\r\n");
#endif
rfm12_rx_clear();
sendNack(tempBuffer);
return buffer;
}
if(state > STATE_FREE){
if(getAck(tempBuffer.bufferLength, tempBuffer.buffer) & ACK){
#if STATE_UART_DEBUG >= 2
uart_putstr ("rxAck\r\n");
#endif
processAck();
} else if(getType(tempBuffer.bufferLength, tempBuffer.buffer) & NACK){
#if STATE_UART_DEBUG >= 2
uart_putstr ("rxNack\r\n");
#endif
processNack();
}
}
if(state == STATE_FREE){
switch(getType(tempBuffer.bufferLength, tempBuffer.buffer)){
case SEND_DATA:
#if STATE_UART_DEBUG >= 2
uart_putstr ("send\r\n");
#endif
buffer = receiveSendData(tempBuffer);
break;
// here we should implement the cases of repeating data therefore we would have to know all last data sent
// here we should implement the get back to in -> timeframe not yet implemented
}
}
// tell the implementation that the buffer
// can be reused for the next data.
rfm12_rx_clear();
}
return buffer;
}
void initCommunication(){
rfm12_init(); // initialize the library
sei();
rfm12_rx_clear();
}
int main(void)
{
uint8_t aes_key_nr;
uint8_t loop = 0;
uint8_t loop2 = 0;
// delay 1s to avoid further communication with uart or RFM12 when my programmer resets the MC after 500ms...
_delay_ms(1000);
util_init();
check_eeprom_compatibility(DEVICETYPE_BASESTATION);
request_queue_init();
// read packetcounter, increase by cycle and write back
packetcounter = e2p_generic_get_packetcounter() + PACKET_COUNTER_WRITE_CYCLE;
e2p_generic_set_packetcounter(packetcounter);
// read device specific config
aes_key_count = e2p_basestation_get_aeskeycount();
device_id = e2p_generic_get_deviceid();
uart_init();
UART_PUTS("\r\n");
UART_PUTF4("smarthomatic Base Station v%u.%u.%u (%08lx)\r\n", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH, VERSION_HASH);
UART_PUTS("(c) 2012..2014 Uwe Freese, www.smarthomatic.org\r\n");
UART_PUTF("Device ID: %u\r\n", device_id);
UART_PUTF("Packet counter: %lu\r\n", packetcounter);
UART_PUTF("AES key count: %u\r\n", aes_key_count);
UART_PUTS("Waiting for incoming data. Press h for help.\r\n\r\n");
led_blink(500, 500, 3);
rfm12_init();
sei();
// ENCODE TEST (Move to unit test some day...)
/*
uint8_t testlen = 32;
uint8_t aes_key_num = 0;
memset(&bufx[0], 0, sizeof(bufx));
bufx[0] = 0xff;
bufx[1] = 0xb0;
bufx[2] = 0xa0;
bufx[3] = 0x3f;
bufx[4] = 0x01;
bufx[5] = 0x70;
bufx[6] = 0x00;
bufx[7] = 0x0c;
bufx[8] = 0xa8;
bufx[9] = 0x00;
bufx[10] = 0x20;
bufx[20] = 0x20;
eeprom_read_block (aes_key, (uint8_t *)(EEPROM_AESKEYS_BYTE + aes_key_num * 32), 32);
UART_PUTS("Using AES key ");
print_bytearray((uint8_t *)aes_key, 32);
UART_PUTS("Before encryption: ");
print_bytearray(bufx, testlen);
uint8_t aes_byte_count = aes256_encrypt_cbc(bufx, testlen);
UART_PUTF("byte count = %u\r\n", aes_byte_count);
UART_PUTS("After encryption: ");
print_bytearray(bufx, aes_byte_count);
aes256_decrypt_cbc(bufx, aes_byte_count);
UART_PUTS("After decryption: ");
print_bytearray(bufx, testlen);
while(1);
*/
while (42)
{
if (rfm12_rx_status() == STATUS_COMPLETE)
{
uint8_t len = rfm12_rx_len();
if ((len == 0) || (len % 16 != 0))
{
UART_PUTF("Received garbage (%u bytes not multiple of 16): ", len);
print_bytearray(bufx, len);
}
else // try to decrypt with all keys stored in EEPROM
{
bool crcok = false;
for (aes_key_nr = 0; aes_key_nr < aes_key_count ; aes_key_nr++)
{
memcpy(bufx, rfm12_rx_buffer(), len);
/*if (aes_key_nr == 0)
{
UART_PUTS("Before decryption: ");
print_bytearray(bufx, len);
}*/
e2p_basestation_get_aeskey(aes_key_nr, aes_key);
//UART_PUTS("Trying AES key 2 ");
//print_bytearray((uint8_t *)aes_key, 32);
aes256_decrypt_cbc(bufx, len);
//UART_PUTS("Decrypted bytes: ");
//print_bytearray(bufx, len);
crcok = pkg_header_check_crc32(len);
if (crcok)
{
//UART_PUTS("CRC correct, AES key found!\r\n");
UART_PUTF("Received (AES key %u): ", aes_key_nr);
print_bytearray(bufx, len);
decode_data(len);
break;
}
}
if (!crcok)
{
UART_PUTS("Received garbage (CRC wrong after decryption): ");
memcpy(bufx, rfm12_rx_buffer(), len);
print_bytearray(bufx, len);
}
UART_PUTS("\r\n");
}
//uart_hexdump((char *)bufcontents, rfm12_rx_len());
//UART_PUTS("\r\n");
// tell the implementation that the buffer can be reused for the next data.
rfm12_rx_clear();
}
// send data, if waiting in send buffer
if (send_data_avail)
{
uint8_t i;
// set AES key nr
aes_key_nr = hex_to_uint8((uint8_t *)cmdbuf, 1);
//UART_PUTF("AES KEY = %u\r\n", aes_key_nr);
// init packet buffer
memset(&bufx[0], 0, sizeof(bufx));
// set message type
uint8_t message_type = hex_to_uint8((uint8_t *)cmdbuf, 3);
pkg_header_set_messagetype(message_type);
pkg_header_adjust_offset();
//UART_PUTF("MessageType = %u\r\n", message_type);
uint8_t string_offset_data = 0;
/*
UART_PUTS("sKK00RRRRGGMM.............Get\r\n");
UART_PUTS("sKK01RRRRGGMMDD...........Set\r\n");
UART_PUTS("sKK02RRRRGGMMDD...........SetGet\r\n");
UART_PUTS("sKK08GGMMDD...............Status\r\n");
UART_PUTS("sKK09SSSSPPPPPPEE.........Ack\r\n");
UART_PUTS("sKK0ASSSSPPPPPPEEGGMMDD...AckStatus\r\n");
*/
// set header extension fields to the values given as hex string in the user input
switch (message_type)
{
case MESSAGETYPE_GET:
case MESSAGETYPE_SET:
case MESSAGETYPE_SETGET:
pkg_headerext_common_set_receiverid(hex_to_uint16((uint8_t *)cmdbuf, 5));
pkg_headerext_common_set_messagegroupid(hex_to_uint8((uint8_t *)cmdbuf, 9));
pkg_headerext_common_set_messageid(hex_to_uint8((uint8_t *)cmdbuf, 11));
string_offset_data = 12;
break;
case MESSAGETYPE_STATUS:
pkg_headerext_common_set_messagegroupid(hex_to_uint8((uint8_t *)cmdbuf, 5));
pkg_headerext_common_set_messageid(hex_to_uint8((uint8_t *)cmdbuf, 7));
string_offset_data = 8;
break;
case MESSAGETYPE_ACK:
pkg_headerext_common_set_acksenderid(hex_to_uint16((uint8_t *)cmdbuf, 5));
pkg_headerext_common_set_ackpacketcounter(hex_to_uint24((uint8_t *)cmdbuf, 9));
pkg_headerext_common_set_error(hex_to_uint8((uint8_t *)cmdbuf, 15));
// fallthrough!
case MESSAGETYPE_ACKSTATUS:
pkg_headerext_common_set_messagegroupid(hex_to_uint8((uint8_t *)cmdbuf, 17));
pkg_headerext_common_set_messageid(hex_to_uint8((uint8_t *)cmdbuf, 19));
string_offset_data = 20;
break;
}
uint8_t data_len_raw = 0;
// copy message data, which exists in all packets except in Get and Ack packets
if ((message_type != MESSAGETYPE_GET) && (message_type != MESSAGETYPE_ACK))
{
uint8_t data_len_raw = (strlen(cmdbuf) - 1 - string_offset_data) / 2;
//UART_PUTF("Data bytes = %u\r\n", data_len_raw);
uint8_t start = __HEADEROFFSETBITS / 8;
uint8_t shift = __HEADEROFFSETBITS % 8;
// copy message data, using __HEADEROFFSETBITS value and string_offset_data
for (i = 0; i < data_len_raw; i++)
{
uint8_t val = hex_to_uint8((uint8_t *)cmdbuf, string_offset_data + 2 * i + 1);
array_write_UIntValue(start + i, shift, 8, val, bufx);
}
}
// round packet length to x * 16 bytes
uint8_t packet_len = ((uint16_t)__HEADEROFFSETBITS + (uint16_t)data_len_raw * 8) / 8;
packet_len = ((packet_len - 1) / 16 + 1) * 16;
// send packet which doesn't require an acknowledge immediately
if ((message_type != MESSAGETYPE_GET) && (message_type != MESSAGETYPE_SET) && (message_type != MESSAGETYPE_SETGET))
{
send_packet(aes_key_nr, packet_len);
}
else // enqueue request (don't send immediately)
{
// header size = 9 bytes!
if (queue_request(pkg_headerext_common_get_receiverid(), message_type, aes_key_nr, bufx + 9, packet_len - 9))
{
UART_PUTF("Request added to queue (%u bytes packet).\r\n", packet_len);
}
else
{
UART_PUTS("Warning! Request queue full. Packet will not be sent.\r\n");
}
print_request_queue();
}
// clear cmdbuf to receive more input from UART
send_data_avail = false;
rfm12_tick();
led_blink(200, 0, 1);
}
// flash LED every second to show the device is alive
if (loop == 50)
{
led_blink(10, 10, 1);
loop = 0;
request_t* request = find_request_to_repeat(packetcounter + 1);
if (request != 0) // if request to repeat was found in queue
{
UART_PUTS("Repeating request.\r\n");
send_packet((*request).aes_key, (*request).data_bytes + 9); // header size = 9 bytes!
print_request_queue();
}
// Auto-send something for debugging purposes...
if (loop2 == 50)
{
//strcpy(cmdbuf, "s000102828300");
//send_data_avail = true;
loop2 = 0;
}
else
{
loop2++;
}
}
else
{
_delay_ms(20);
}
rfm12_tick();
loop++;
process_rxbuf();
if (uart_timeout > 0)
{
uart_timeout--;
if (uart_timeout == 0)
{
UART_PUTS("*** UART user timeout. Input was ignored. ***\r\n");
}
}
}
// never called
// aes256_done(&aes_ctx);
}
int main ( void )
{
uint8_t aes_key_nr;
uint8_t loop = 0;
uint8_t loop2 = 0;
uint8_t data[22];
sbi(LED_DDR, LED_PIN);
// delay 1s to avoid further communication with uart or RFM12 when my programmer resets the MC after 500ms...
_delay_ms(1000);
request_queue_init();
// read packetcounter, increase by cycle and write back
packetcounter = eeprom_read_dword((uint32_t*)EEPROM_POS_PACKET_COUNTER) + PACKET_COUNTER_WRITE_CYCLE;
eeprom_write_dword((uint32_t*)0, packetcounter);
uart_init(true);
UART_PUTS ("\r\n");
UART_PUTS ("Open Home Control Base Station V1.0\r\n");
UART_PUTS ("(c) 2012 Uwe Freese, www.open-home-control.com\r\n");
UART_PUTF ("Packet counter: %lu\r\n", packetcounter);
UART_PUTS ("Waiting for incoming data. Press h for help.\r\n");
rfm12_init();
sei();
// ENCODE TEST
/*
uint8_t testlen = 64;
eeprom_read_block (aes_key, (uint8_t *)EEPROM_POS_AES_KEY, 32);
UART_PUTS("Using AES key ");
printbytearray((uint8_t *)aes_key, 32);
UART_PUTS("Before encryption: ");
printbytearray(bufx, testlen);
unsigned long crc = crc32(bufx, testlen);
UART_PUTF("CRC32 is %lx (added as last 4 bytes)\r\n", crc);
UART_PUTS("1\r\n");
crc = crc32(bufx, testlen - 4);
UART_PUTS("2\r\n");
setBuf32(testlen - 4, crc);
UART_PUTS("Before encryption (CRC added): ");
printbytearray(bufx, testlen);
UART_PUTS("1\r\n");
uint8_t aes_byte_count = aes256_encrypt_cbc(bufx, testlen);
UART_PUTS("2\r\n");
UART_PUTS("After encryption: ");
printbytearray(bufx, aes_byte_count);
UART_PUTF("String len = %u\r\n", aes_byte_count);
UART_PUTS("1\r\n");
aes256_decrypt_cbc(bufx, aes_byte_count);
UART_PUTS("2\r\n");
UART_PUTS("After decryption: ");
printbytearray(bufx, testlen);
crc = getBuf32(testlen - 4);
UART_PUTF("CRC32 is %lx (last 4 bytes from decrypted message)\r\n", crc);
printbytearray(bufx, testlen);
UART_PUTS("After decryption (CRC removed): ");
printbytearray(bufx, testlen);
UART_PUTF("String len = %u\r\n", testlen);
while(1);
*/
while (42)
{
if (rfm12_rx_status() == STATUS_COMPLETE)
{
uint8_t len = rfm12_rx_len();
if ((len == 0) || (len % 16 != 0))
{
UART_PUTF("Received garbage (%u bytes not multiple of 16): ", len);
printbytearray(bufx, len);
}
else // try to decrypt with all keys stored in EEPROM
{
uint32_t assumed_crc;
uint32_t actual_crc;
for(aes_key_nr = 0; aes_key_nr < AES_KEY_EEPROM_COUNT ; aes_key_nr++)
{
//strncpy((char *)bufx, (char *)rfm12_rx_buffer(), len);
memcpy(bufx, rfm12_rx_buffer(), len);
/*if (aes_key_nr == 0)
{
UART_PUTS("Before decryption: ");
printbytearray(bufx, len);
}*/
eeprom_read_block (aes_key, (uint8_t *)(EEPROM_POS_AES_KEY + aes_key_nr * 32), 32);
//UART_PUTS("Trying AES key ");
//printbytearray((uint8_t *)aes_key, 32);
aes256_decrypt_cbc(bufx, len);
//UART_PUTS("Decrypted bytes: ");
//printbytearray(bufx, len);
assumed_crc = getBuf32(len - 4);
actual_crc = crc32(bufx, len - 4);
//UART_PUTF("Received CRC32 would be %lx\r\n", assumed_crc);
//UART_PUTF("Re-calculated CRC32 is %lx\r\n", actual_crc);
if (assumed_crc == actual_crc)
{
//UART_PUTS("CRC correct, AES key found!\r\n");
UART_PUTF("Received (AES key %u): ", aes_key_nr);
printbytearray(bufx, len - 4);
decode_data(len - 4);
break;
}
}
if (assumed_crc != actual_crc)
{
UART_PUTS("Received garbage (CRC wrong after decryption).\r\n");
}
UART_PUTS("\r\n");
}
//uart_hexdump((char *)bufcontents, rfm12_rx_len());
//UART_PUTS("\r\n");
// tell the implementation that the buffer can be reused for the next data.
rfm12_rx_clear();
}
// send data, if waiting in send buffer
if (send_data_avail)
{
uint8_t i;
uint8_t data_len_raw = strlen(sendbuf) / 2 - 2;
// round data length to 6 + 16 bytes (including padding bytes)
uint8_t data_len = (((data_len_raw + 9) / 16) + 1) * 16 - 10;
// set aes key nr
aes_key_nr = hex_to_uint8((uint8_t *)sendbuf, 0);
//UART_PUTF("AES KEY = %u\r\n", aes_key_nr);
// set command id
uint8_t command_id = hex_to_uint8((uint8_t *)sendbuf, 2);
// set data
for (i = 0; i < data_len_raw; i++)
{
data[i] = hex_to_uint8((uint8_t *)sendbuf, 4 + 2 * i);
}
// set padding bytes
for (i = data_len_raw; i < data_len; i++)
{
data[i] = 0;
}
// send status packet immediately (command IDs are less than 128)
if (command_id < 128)
{
// set command id
bufx[5] = command_id;
// set data
memcpy(bufx + 6, data, data_len);
send_packet(aes_key_nr, data_len);
}
else // enqueue request (don't send immediately)
{
if (queue_request(data[0], command_id, aes_key_nr, data + 1))
{
UART_PUTS("Adding request to queue.\r\n");
}
else
{
UART_PUTS("Warning! Request queue full. Packet will not be sent.\r\n");
}
print_request_queue();
}
// clear send text buffer
send_data_avail = false;
rfm12_tick();
led_blink(200, 0, 1);
}
// flash LED every second to show the device is alive
if (loop == 50)
{
led_blink(10, 10, 1);
loop = 0;
if (set_repeat_request(packetcounter + 1)) // if request to repeat was found in queue
{
UART_PUTS("Repeating request.\r\n");
send_packet(0, 6);
print_request_queue();
}
// Auto-send something for debugging purposes...
if (loop2 == 50)
{
//strcpy(sendbuf, "008c0001003d");
//send_data_avail = true;
loop2 = 0;
}
else
{
loop2++;
}
}
else
{
_delay_ms(20);
}
rfm12_tick();
loop++;
process_rxbuf();
if (uart_timeout > 0)
{
uart_timeout--;
if (uart_timeout == 0)
{
UART_PUTS("*** UART user timeout. Input was ignored. ***\r\n");
}
}
}
// never called
// aes256_done(&aes_ctx);
}
int main(void)
{
uint16_t send_status_timeout = 25;
uint32_t station_packetcounter;
uint32_t pos;
uint8_t button_state = 0;
uint8_t manual_dim_direction = 0;
// delay 1s to avoid further communication with uart or RFM12 when my programmer resets the MC after 500ms...
_delay_ms(1000);
util_init();
check_eeprom_compatibility(DEVICE_TYPE_DIMMER);
osccal_init();
// read packetcounter, increase by cycle and write back
packetcounter = eeprom_read_dword((uint32_t*)EEPROM_POS_PACKET_COUNTER) + PACKET_COUNTER_WRITE_CYCLE;
eeprom_write_dword((uint32_t*)EEPROM_POS_PACKET_COUNTER, packetcounter);
// read device id and write to send buffer
device_id = eeprom_read_byte((uint8_t*)EEPROM_POS_DEVICE_ID);
use_pwm_translation = 1; //eeprom_read_byte((uint8_t*)EEPROM_POS_USE_PWM_TRANSLATION);
// TODO: read (saved) dimmer state from before the eventual powerloss
/*for (i = 0; i < SWITCH_COUNT; i++)
{
uint16_t u16 = eeprom_read_word((uint16_t*)EEPROM_POS_SWITCH_STATE + i * 2);
switch_state[i] = (uint8_t)(u16 & 0b1);
switch_timeout[i] = u16 >> 1;
}*/
// read last received station packetcounter
station_packetcounter = eeprom_read_dword((uint32_t*)EEPROM_POS_STATION_PACKET_COUNTER);
led_blink(200, 200, 5);
#ifdef UART_DEBUG
uart_init(false);
UART_PUTS ("\r\n");
UART_PUTS ("smarthomatic Dimmer V1.0 (c) 2013 Uwe Freese, www.smarthomatic.org\r\n");
osccal_info();
UART_PUTF ("Device ID: %u\r\n", device_id);
UART_PUTF ("Packet counter: %lu\r\n", packetcounter);
UART_PUTF ("Use PWM translation table: %u\r\n", use_pwm_translation);
UART_PUTF ("Last received station packet counter: %u\r\n\r\n", station_packetcounter);
#endif
// init AES key
eeprom_read_block (aes_key, (uint8_t *)EEPROM_POS_AES_KEY, 32);
rfm12_init();
PWM_init();
io_init();
setPWMDutyCycle(0);
timer0_init();
// DEMO to measure the voltages of different PWM settings to calculate the pwm_lookup table
/*while (42)
{
uint16_t i;
for (i = 0; i <= 1024; i = i + 100)
{
UART_PUTF ("PWM value OCR1A: %u\r\n", i);
OCR1A = i;
led_blink(500, 6500, 1);
}
}*/
// DEMO 0..100..0%, using the pwm_lookup table and the translation table in EEPROM.
/*while (42)
{
float i;
for (i = 0; i <= 100; i = i + 0.05)
{
led_blink(10, 10, 1);
setPWMDutyCycle(i);
}
for (i = 99.95; i > 0; i = i - 0.05)
{
led_blink(10, 10, 1);
setPWMDutyCycle(i);
}
}*/
// set initial switch state
/*for (i = 0; i < SWITCH_COUNT; i++)
{
switchRelais(i, switch_state[i]);
}*/
sei();
// DEMO 30s
/*animation_length = 30;
animation_length = (uint32_t)((float)animation_length * 1000 / ANIMATION_CYCLE_MS);
start_brightness = 0;
end_brightness = 255;
animation_position = 0;*/
while (42)
{
if (rfm12_rx_status() == STATUS_COMPLETE)
{
uint8_t len = rfm12_rx_len();
if ((len == 0) || (len % 16 != 0))
{
UART_PUTF("Received garbage (%u bytes not multiple of 16): ", len);
printbytearray(bufx, len);
}
else // try to decrypt with all keys stored in EEPROM
{
memcpy(bufx, rfm12_rx_buffer(), len);
//UART_PUTS("Before decryption: ");
//printbytearray(bufx, len);
aes256_decrypt_cbc(bufx, len);
//UART_PUTS("Decrypted bytes: ");
//printbytearray(bufx, len);
uint32_t assumed_crc = getBuf32(len - 4);
uint32_t actual_crc = crc32(bufx, len - 4);
//UART_PUTF("Received CRC32 would be %lx\r\n", assumed_crc);
//UART_PUTF("Re-calculated CRC32 is %lx\r\n", actual_crc);
if (assumed_crc != actual_crc)
{
UART_PUTS("Received garbage (CRC wrong after decryption).\r\n");
}
else
{
//UART_PUTS("CRC correct, AES key found!\r\n");
UART_PUTS(" Received: ");
printbytearray(bufx, len - 4);
// decode command and react
uint8_t sender = bufx[0];
UART_PUTF(" Sender: %u\r\n", sender);
if (sender != 0)
{
UART_PUTF("Packet not from base station. Ignoring (Sender ID was: %u).\r\n", sender);
}
else
{
uint32_t packcnt = getBuf32(1);
UART_PUTF(" Packet Counter: %lu\r\n", packcnt);
// check received counter
if (0) //packcnt <= station_packetcounter)
{
UART_PUTF2("Received packet counter %lu is lower than last received counter %lu. Ignoring packet.\r\n", packcnt, station_packetcounter);
}
else
{
// write received counter
station_packetcounter = packcnt;
eeprom_write_dword((uint32_t*)EEPROM_POS_STATION_PACKET_COUNTER, station_packetcounter);
// check command ID
uint8_t cmd = bufx[5];
UART_PUTF(" Command ID: %u\r\n", cmd);
if (cmd != 141) // ID 141 == Dimmer Request
{
UART_PUTF("Received unknown command ID %u. Ignoring packet.\r\n", cmd);
}
else
{
// check device id
uint8_t rcv_id = bufx[6];
UART_PUTF(" Receiver ID: %u\r\n", rcv_id);
if (rcv_id != device_id)
{
UART_PUTF("Device ID %u does not match. Ignoring packet.\r\n", rcv_id);
}
else
{
// read animation mode and parameters
uint8_t animation_mode = bufx[7] >> 5;
// TODO: Implement support for multiple dimmers (e.g. RGB)
// uint8_t dimmer_bitmask = bufx[7] & 0b111;
animation_length = getBuf16(8);
start_brightness = bufx[10];
end_brightness = bufx[11];
UART_PUTF(" Animation Mode: %u\r\n", animation_mode); // TODO: Set binary mode like 00010110
//UART_PUTF(" Dimmer Bitmask: %u\r\n", dimmer_bitmask);
UART_PUTF(" Animation Time: %us\r\n", animation_length);
UART_PUTF(" Start Brightness: %u\r\n", start_brightness);
UART_PUTF(" End Brightness: %u\r\n", end_brightness);
animation_length = (uint32_t)((float)animation_length * 1000 / ANIMATION_CYCLE_MS);
animation_position = 0;
/* TODO: Write to EEPROM (?)
// write back switch state to EEPROM
switch_state[i] = req_state;
switch_timeout[i] = req_timeout;
eeprom_write_word((uint16_t*)EEPROM_POS_SWITCH_STATE + i * 2, u16);
*/
// send acknowledge
UART_PUTS("Sending ACK:\r\n");
// set device ID (base station has ID 0 by definition)
bufx[0] = device_id;
// update packet counter
packetcounter++;
if (packetcounter % PACKET_COUNTER_WRITE_CYCLE == 0)
{
eeprom_write_dword((uint32_t*)0, packetcounter);
}
setBuf32(1, packetcounter);
// set command ID "Generic Acknowledge"
bufx[5] = 1;
// set sender ID of request
bufx[6] = sender;
// set Packet counter of request
setBuf32(7, station_packetcounter);
// zero unused bytes
bufx[11] = 0;
// set CRC32
uint32_t crc = crc32(bufx, 12);
setBuf32(12, crc);
// show info
UART_PUTF(" CRC32: %lx\r\n", crc);
uart_putstr(" Unencrypted: ");
printbytearray(bufx, 16);
rfm12_sendbuf();
UART_PUTS(" Send encrypted: ");
printbytearray(bufx, 16);
UART_PUTS("\r\n");
rfm12_tick();
led_blink(200, 0, 1);
send_status_timeout = 25;
}
}
}
}
}
}
// tell the implementation that the buffer can be reused for the next data.
rfm12_rx_clear();
}
_delay_ms(ANIMATION_UPDATE_MS);
// React on button press.
// - abort animation
// - switch off, when brightness > 0
// - switch on otherwise
if (!(BUTTON_PORT & (1 << BUTTON_PIN))) // button press
{
if (button_state == 0)
{
UART_PUTS("Button pressed\r\n");
animation_length = 0;
animation_position = 0;
}
if (button_state < 5)
{
button_state++;
}
else // manual dimming
{
if (manual_dim_direction) // UP
{
if (current_brightness < 100)
{
current_brightness = (uint8_t)current_brightness / 2 * 2 + 2;
setPWMDutyCycle(current_brightness);
}
else
{
UART_PUTS("manual dimming DOWN\r\n");
manual_dim_direction = 0;
}
}
else // DOWN
{
if (current_brightness > 0)
{
current_brightness = (((uint8_t)current_brightness - 1) / 2) * 2;
setPWMDutyCycle(current_brightness);
}
else
{
UART_PUTS("manual dimming UP\r\n");
manual_dim_direction = 1;
}
}
}
}
else if (button_state && (BUTTON_PORT & (1 << BUTTON_PIN))) // button release
{
UART_PUTS("Button released\r\n");
if (button_state < 5) // short button press
{
if (current_brightness > 0)
{
UART_PUTS(" -> 0%\r\n");
setPWMDutyCycle(0);
}
else
{
UART_PUTS(" -> 100%\r\n");
setPWMDutyCycle(100);
}
}
else
{
// reverse dim direction
manual_dim_direction = !manual_dim_direction;
}
button_state = 0;
}
// update brightness according animation_position, updated by timer0
if (animation_length > 0)
{
pos = animation_position; // copy value to avoid that it changes in between by timer interrupt
UART_PUTF2("%lu/%lu, ", pos, animation_length);
if (pos == animation_length)
{
UART_PUTF("END Brightness %u%%, ", end_brightness * 100 / 255);
setPWMDutyCycle((float)end_brightness * 100 / 255);
animation_length = 0;
animation_position = 0;
}
else
{
float brightness = (start_brightness + ((float)end_brightness - start_brightness) * pos / animation_length) * 100 / 255;
UART_PUTF("Br.%u%%, ", (uint32_t)(brightness));
setPWMDutyCycle(brightness);
}
}
// send status from time to time
if (send_status_timeout == 0)
{
send_status_timeout = SEND_STATUS_EVERY_SEC * (1000 / ANIMATION_UPDATE_MS);
send_dimmer_status();
led_blink(200, 0, 1);
}
rfm12_tick();
send_status_timeout--;
checkSwitchOff();
}
int RecievePacket(char* Rpacket) {
/*
see http://www.hansinator.de/rfm12lib/ for rfm12b libray details
receive frame, send acknowledgement
if received a frame:
de-bytestuff
check crc
if recipient:
acknowledge
pass to network
*/
uint8_t* bufptr;
char Rframe[50], ackstr[50];
struct frame ack;
struct frame Nrframe[FRAMECOUNT];
int Received_Final_frame = 0;
int i = 0;
while(!Received_Final_frame){
//int Rframe_len;
if (rfm12_rx_status() == STATUS_COMPLETE) {
bufptr = rfm12_rx_buffer();
for(uint8_t k = 0; k < (rfm12_rx_len()); k++) {
Rframe[k] = bufptr[k];
}
Rframe[rfm12_rx_len()] = '\0';
rfm12_rx_clear();
put_string(Rframe);
strcpy(ackstr, Rframe);
int Rframe_check = decode_frame(Nrframe[i], Rframe);
put_string("\nRframe_check: ");
put_number(Rframe_check);
if(Rframe_check & (1<<1)) {
if(Rframe_check & 1<<3) {
Received_Final_frame = 1;
}
/*
frame received, frame for me
acknowledge
*/
rfm12_tx(strlen(ackstr), 0, (uint8_t*)ackstr);
for (uint8_t j = 0; j < 100; j++)
{
//put_string(". ");
rfm12_tick();
_delay_us(500);
}
i++;
}
else if(!Rframe_check) {
;
}
else {
break;
}
}
}
// if(i && i < FRAMECOUNT) {
// put_string("\nPacketComplete");
// strcpy(Rpacket, Nrframe[0].frame);
// for(int l = 1; l<i; l++) {
// strcat(Rpacket, Nrframe[l].frame);
// }
// strcat(Rpacket, "\n");
// }
return i;
}
int SendPacket(char dest, char* Spacket) {
/*
Packet length = 122 => max 6 frames
split packet into frames, send frame, await acknowledgement
*/
struct frame data[FRAMECOUNT];
int no_frames;
put_number(millis());
put_char('\n');
no_frames = makeframe(&data, dest, Spacket, 0);
put_number(millis());
put_char('\n');
uint8_t *bufptr;
char temp[50];
int i,k, send_complete;
struct frame ack;
unsigned long time;
for(i = 0; i < no_frames; i++) {
send_complete = 0;
char test[FRAMELEN] = "0123456789012345678901234";
while(!send_complete) {
///////////////////send//////////////////////
rfm12_tx(strlen(data[i].frame), 0, (uint8_t*)data[i].frame);
for (uint8_t j = 0; j < 100; j++)
{
//put_string(". ");
rfm12_tick();
_delay_us(500);
}
time = millis() + 500;
while((millis() != time)) {
///////////check for acknowledgemt/////////////////
if(rfm12_rx_status() == STATUS_COMPLETE) {
//send_complete = 1;
bufptr = rfm12_rx_buffer();
for(k = 0; k < (rfm12_rx_len()); k++) {
temp[k] = bufptr[k];
}
temp[rfm12_rx_len()] = '\0';
rfm12_rx_clear();
// put_string("\nRECEIVED: ");
// put_string(temp);
// put_string("\n\n");
////////////////check if acknowledgemnt valid////////////////
if(decode_frame(ack, temp) & (1<<1)) {
//if(ack.checksum[0] == data[i].checksum[0]) {
put_string("\nSend Complete!\n");
send_complete = 1;
break;
//}
}
}
}
if(!send_complete) {
put_string("\nTIMEOUT\n");
}
}
}
/*
for frame in frames:
send_complete = 0;
while not send complete:
send frame
start timer
while timer:
if acknowledgement:
send_complete = 1;
*/
return 0;
}
int main(void)
{
uint16_t send_status_timeout = 25;
uint32_t pos;
uint8_t button_state = 0;
uint8_t manual_dim_direction = 0;
// delay 1s to avoid further communication with uart or RFM12 when my programmer resets the MC after 500ms...
_delay_ms(1000);
util_init();
check_eeprom_compatibility(DEVICETYPE_DIMMER);
// read packetcounter, increase by cycle and write back
packetcounter = e2p_generic_get_packetcounter() + PACKET_COUNTER_WRITE_CYCLE;
e2p_generic_set_packetcounter(packetcounter);
// read device id
device_id = e2p_generic_get_deviceid();
// pwm translation table is not used if first byte is 0xFF
use_pwm_translation = (0xFF != eeprom_read_UIntValue8(EEPROM_BRIGHTNESSTRANSLATIONTABLE_BYTE,
EEPROM_BRIGHTNESSTRANSLATIONTABLE_BIT, 8, 0, 0xFF));
// TODO: read (saved) dimmer state from before the eventual powerloss
/*for (i = 0; i < SWITCH_COUNT; i++)
{
uint16_t u16 = eeprom_read_word((uint16_t*)EEPROM_POS_SWITCH_STATE + i * 2);
switch_state[i] = (uint8_t)(u16 & 0b1);
switch_timeout[i] = u16 >> 1;
}*/
// read last received station packetcounter
station_packetcounter = e2p_dimmer_get_basestationpacketcounter();
led_blink(500, 500, 3);
osccal_init();
uart_init();
UART_PUTS ("\r\n");
UART_PUTF4("smarthomatic Dimmer v%u.%u.%u (%08lx)\r\n", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH, VERSION_HASH);
UART_PUTS("(c) 2013..2014 Uwe Freese, www.smarthomatic.org\r\n");
osccal_info();
UART_PUTF ("DeviceID: %u\r\n", device_id);
UART_PUTF ("PacketCounter: %lu\r\n", packetcounter);
UART_PUTF ("Use PWM translation table: %u\r\n", use_pwm_translation);
UART_PUTF ("Last received base station PacketCounter: %u\r\n\r\n", station_packetcounter);
// init AES key
eeprom_read_block (aes_key, (uint8_t *)EEPROM_AESKEY_BYTE, 32);
rfm12_init();
PWM_init();
io_init();
setPWMDutyCyclePercent(0);
timer0_init();
// DEMO to measure the voltages of different PWM settings to calculate the pwm_lookup table
/*while (42)
{
uint16_t i;
for (i = 0; i <= 1024; i = i + 100)
{
UART_PUTF ("PWM value OCR1A: %u\r\n", i);
OCR1A = i;
led_blink(500, 6500, 1);
}
}*/
// DEMO 0..100..0%, using the pwm_lookup table and the translation table in EEPROM.
/*while (42)
{
float i;
for (i = 0; i <= 100; i = i + 0.05)
{
led_blink(10, 10, 1);
setPWMDutyCycle(i);
}
for (i = 99.95; i > 0; i = i - 0.05)
{
led_blink(10, 10, 1);
setPWMDutyCycle(i);
}
}*/
// set initial switch state
/*for (i = 0; i < SWITCH_COUNT; i++)
{
switchRelais(i, switch_state[i]);
}*/
sei();
// DEMO 30s
/*animation_length = 30;
animation_length = (uint32_t)((float)animation_length * 1000 / ANIMATION_CYCLE_MS);
start_brightness = 0;
end_brightness = 255;
animation_position = 0;*/
while (42)
{
if (rfm12_rx_status() == STATUS_COMPLETE)
{
uint8_t len = rfm12_rx_len();
if ((len == 0) || (len % 16 != 0))
{
UART_PUTF("Received garbage (%u bytes not multiple of 16): ", len);
print_bytearray(bufx, len);
}
else // try to decrypt with all keys stored in EEPROM
{
memcpy(bufx, rfm12_rx_buffer(), len);
UART_PUTS("Before decryption: ");
print_bytearray(bufx, len);
aes256_decrypt_cbc(bufx, len);
UART_PUTS("Decrypted bytes: ");
print_bytearray(bufx, len);
if (!pkg_header_check_crc32(len))
{
UART_PUTS("Received garbage (CRC wrong after decryption).\r\n");
}
else
{
process_packet(len);
}
}
// tell the implementation that the buffer can be reused for the next data.
rfm12_rx_clear();
}
_delay_ms(ANIMATION_UPDATE_MS);
// React on button press.
// - abort animation
// - switch off, when brightness > 0
// - switch on otherwise
if (!(BUTTON_PORT & (1 << BUTTON_PIN))) // button press
{
if (button_state == 0)
{
UART_PUTS("Button pressed\r\n");
animation_length = 0;
animation_position = 0;
}
if (button_state < 5)
{
button_state++;
}
else // manual dimming
{
if (manual_dim_direction) // UP
{
if (current_brightness < 100)
{
current_brightness = (uint8_t)current_brightness / 2 * 2 + 2;
setPWMDutyCyclePercent(current_brightness);
}
else
{
UART_PUTS("manual dimming DOWN\r\n");
manual_dim_direction = 0;
}
}
else // DOWN
{
if (current_brightness > 0)
{
current_brightness = (((uint8_t)current_brightness - 1) / 2) * 2;
setPWMDutyCyclePercent(current_brightness);
}
else
{
UART_PUTS("manual dimming UP\r\n");
manual_dim_direction = 1;
}
}
}
}
else if (button_state && (BUTTON_PORT & (1 << BUTTON_PIN))) // button release
{
UART_PUTS("Button released\r\n");
if (button_state < 5) // short button press
{
if (current_brightness > 0)
{
UART_PUTS(" -> 0%\r\n");
setPWMDutyCyclePercent(0);
}
else
{
UART_PUTS(" -> 100%\r\n");
setPWMDutyCyclePercent(100);
}
}
else
{
// reverse dim direction
manual_dim_direction = !manual_dim_direction;
}
button_state = 0;
}
// update brightness according animation_position, updated by timer0
if (animation_length > 0)
{
pos = animation_position; // copy value to avoid that it changes in between by timer interrupt
UART_PUTF2("%lu/%lu, ", pos, animation_length);
if (pos == animation_length)
{
UART_PUTF("END Brightness %u%%, ", end_brightness);
setPWMDutyCyclePercent((float)end_brightness);
animation_length = 0;
animation_position = 0;
}
else
{
float brightness = (start_brightness + ((float)end_brightness - start_brightness) * pos / animation_length);
UART_PUTF("Br.%u%%, ", (uint32_t)(brightness));
setPWMDutyCyclePercent(brightness);
}
}
// send status from time to time
if (send_status_timeout == 0)
{
send_status_timeout = SEND_STATUS_EVERY_SEC * (1000 / ANIMATION_UPDATE_MS);
send_dimmer_status();
led_blink(200, 0, 1);
}
else if (version_status_cycle >= SEND_VERSION_STATUS_CYCLE)
{
version_status_cycle = 0;
send_version_status();
led_blink(200, 0, 1);
}
rfm12_tick();
send_status_timeout--;
checkSwitchOff();
}
// never called
// aes256_done(&aes_ctx);
}
// Zyklisches Programm
void rfm12_layer2_tick()
{
if (rfm12_send_state == send_buffered)
{
// Es ist etwas zum Senden vorhanden
uint8_t retval = rfm12_tx (RFM12_MYTYPE, (uint8_t*)&rfm12_send_buffer, rfm12_send_buffer.len+RFM12_SEND_HEADER_SIZE);
if (retval==0x80)
{
// erfolgreich eingetragen
rfm12_send_state = send_wait;
rfm12_send_time = time_ms;
debug_write_Pstr(PSTR("Packet Enqeued\r\n"));
}
else if ((time_ms-rfm12_send_time)>RFM12_SEND_QUEUE_TIMEOUT)
{
// Timeout beim Warten auf die Sendemöglichkeit
// Fehlerzustand einnehmen
rfm12_send_state = send_error;
rfm12_send_lasterror = send_hardware;
debug_write_Pstr(PSTR("SEND QUEUE TIMEOUT\r\n"));
}
}
rfm12_tick();
if (rfm12_rx_status() == RFM12_STATUS_COMPLETE)
{
uint8_t rx_no_clear=0;
if ((rfm12_rx_type()!=RFM12_MYTYPE) || (rfm12_rx_len()<RFM12_SEND_HEADER_SIZE))
{
debug_write_Pstr(PSTR("REC INVALID\r\n"));
// Paket aus anderem Protokoll oder zu kleines Paket ignorieren
}
else
{
// Flag fuer den Sendeanstoss für Antwortpakete
uint8_t send_header_buffer=0;
rfm12_tsend_buffer *buf = (rfm12_tsend_buffer*)rfm12_rx_buffer();
if (buf->teltype==RFM12_TELTYPE_DATANACK || (buf->destaddress==RFM12_BROADCAST_ADDRESS && buf->teltype==RFM12_TELTYPE_DATA))
{
// Broadcast Empfang melden und nicht bestätigen
debug_write_Pstr(PSTR("REC BROADCAST\r\n"));
if (rfm12_receive_state == receive_idle)
{
rfm12_receive_buffer.address = buf->srcaddress;
rfm12_receive_buffer.len = rfm12_rx_len()-RFM12_SEND_HEADER_SIZE;
rfm12_receive_buffer.data = buf->data;
rfm12_receive_state = receive_data;
rx_no_clear = 1;
}
}
else if (buf->destaddress==RFM12_MYADDRESS)
{
// Paket für meine Adresse
switch (buf->teltype)
{
case RFM12_TELTYPE_DATA :
// Empfang melden und bestätigen
debug_write_Pstr(PSTR("REC DATA\r\n"));
if (rfm12_receive_state == receive_idle)
{
rfm12_receive_buffer.address = buf->srcaddress;
rfm12_receive_buffer.len = rfm12_rx_len()-RFM12_SEND_HEADER_SIZE;
rfm12_receive_buffer.data = buf->data;
rfm12_receive_state = receive_data;
rx_no_clear = 1;
// Antwortpaket zusammenstellen
rfm12_send_header_buffer.teltype = RFM12_TELTYPE_ACK;
rfm12_send_header_buffer.destaddress = buf->srcaddress;
rfm12_send_header_buffer.telcount = buf->telcount;
send_header_buffer=1;
}
break;
case RFM12_TELTYPE_ACK :
debug_write_Pstr(PSTR("REC ACK\r\n"));
if (rfm12_send_state==send_wait
&& rfm12_send_buffer.destaddress==buf->srcaddress
&& rfm12_send_buffer.telcount==buf->telcount)
{
// Korrekte Bestätigung erhalten, Senden ist damit erfolgreich beendet
rfm12_send_state = send_ok;
}
break;
case RFM12_TELTYPE_NACK :
debug_write_Pstr(PSTR("REC NACK\r\n"));
if (rfm12_send_state==send_wait
&& rfm12_send_buffer.destaddress==buf->srcaddress
&& rfm12_send_buffer.telcount==buf->telcount)
{
// Ablehnung erhalten, Senden ist damit mit Fehler beendet
rfm12_send_state = send_error;
rfm12_send_lasterror = send_nack;
}
break;
case RFM12_TELTYPE_PING :
// Antwortpaket zusammenstellen
debug_write_Pstr(PSTR("REC PING\r\n"));
rfm12_send_header_buffer.teltype = RFM12_TELTYPE_PINGACK;
rfm12_send_header_buffer.destaddress = buf->srcaddress;
rfm12_send_header_buffer.telcount = buf->telcount;
send_header_buffer=1;
break;
case RFM12_TELTYPE_PINGACK :
debug_write_Pstr(PSTR("REC PINGACK\r\n"));
if (rfm12_send_state==send_wait
&& rfm12_send_buffer.destaddress==buf->srcaddress
&& rfm12_send_buffer.telcount==buf->telcount
&& rfm12_send_buffer.teltype==RFM12_TELTYPE_PING)
{
// Korrekte Bestätigung erhalten, Ping ist damit erfolgreich beendet
rfm12_send_state = send_ok;
}
break;
case RFM12_TELTYPE_FRAGMENT :
// noch nicht implementiert
break;
default:
// alles andere wird ignoriert
break;
}
if (send_header_buffer)
{
// Ein Antworttelegramm soll gesendet werden
rfm12_send_header_buffer.srcaddress = RFM12_MYADDRESS;
// Telegramm senden, der Rückgabewert ist uns hier egal, weil man daraus nichts ableiten kann
rfm12_tx (RFM12_MYTYPE, (uint8_t*)&rfm12_send_header_buffer, RFM12_SEND_HEADER_SIZE);
debug_write_Pstr(PSTR("SEND HEADER\r\n"));
}
} // if MYADDRESS
}
if (!rx_no_clear) rfm12_rx_clear(); // unterlagerten Puffer wieder freigeben
} // if received
if (rfm12_send_state==send_wait && (time_ms-rfm12_send_time)>RFM12_ACK_TIMEOUT)
{
// Timeout beim Warten auf Sendebestätigung abgelaufen
debug_write_Pstr(PSTR("SEND TIMEOUT\r\n"));
if (rfm12_send_buffer.retry_count++ < rfm12_send_retry_limit)
{
rfm12_tx (RFM12_MYTYPE, (uint8_t*)&rfm12_send_buffer, rfm12_send_buffer.len+RFM12_SEND_HEADER_SIZE);
rfm12_send_time=time_ms;
}
else
{
rfm12_send_state=send_error;
rfm12_send_lasterror = send_timeout;
}
}
}
