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updated C code, added timeouts etc, not tested!

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pull/9/head
Ondřej Hruška 7 years ago
parent c7f4e2c6f9
commit b6532962a4
2 changed files with 241 additions and 200 deletions
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      TinyFrame.c
  2. 34
      TinyFrame.h

407
TinyFrame.c
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@ -20,9 +20,12 @@ enum TFState {
TFState_DATA_CKSUM //!< Wait for Checksum TFState_DATA_CKSUM //!< Wait for Checksum
}; };
typedef struct _IdListener_struct { typedef struct _IdListener_struct_ {
TF_ID id; TF_ID id;
TF_LISTENER fn; TF_LISTENER fn;
unsigned int timeout; // nr of ticks remaining to disable this listener
unsigned int timeout_max; // the original timeout is stored here
void *userdata;
} IdListener; } IdListener;
typedef struct _TypeListener_struct_ { typedef struct _TypeListener_struct_ {
@ -37,17 +40,17 @@ typedef struct _GenericListener_struct_ {
/** /**
* Frame parser internal state * Frame parser internal state
*/ */
static struct TinyFrameStruct { static struct TinyFrameInstance {
/* Own state */ /* Own state */
TF_PEER peer_bit; //!< Own peer bit (unqiue to avoid msg ID clash) TF_PEER peer_bit; //!< Own peer bit (unqiue to avoid msg ID clash)
TF_ID next_id; //!< Next frame / frame chain ID TF_ID next_id; //!< Next frame / frame chain ID
/* Parser state */ /* Parser state */
enum TFState state; enum TFState state;
unsigned int parser_timeout_ticks; TF_TICKS parser_timeout_ticks;
TF_ID id; //!< Incoming packet ID TF_ID id; //!< Incoming packet ID
TF_LEN len; //!< Payload length TF_LEN len; //!< Payload length
uint8_t data[TF_MAX_PAYLOAD]; //!< Data byte buffer uint8_t data[TF_MAX_PAYLOAD_RX]; //!< Data byte buffer
size_t rxi; //!< Byte counter size_t rxi; //!< Byte counter
TF_CKSUM cksum; //!< Checksum calculated of the data stream TF_CKSUM cksum; //!< Checksum calculated of the data stream
TF_CKSUM ref_cksum; //!< Reference checksum read from the message TF_CKSUM ref_cksum; //!< Reference checksum read from the message
@ -61,133 +64,136 @@ static struct TinyFrameStruct {
TypeListener type_listeners[TF_MAX_TYPE_LST]; TypeListener type_listeners[TF_MAX_TYPE_LST];
GenericListener generic_listeners[TF_MAX_GEN_LST]; GenericListener generic_listeners[TF_MAX_GEN_LST];
// Those counters are used to optimize look-up times.
// They point to the highest used slot number,
// or close to it, depending on the removal order.
size_t count_id_lst; size_t count_id_lst;
size_t count_type_lst; size_t count_type_lst;
size_t count_generic_lst; size_t count_generic_lst;
// Buffer for building frames // Buffer for building frames
uint8_t sendbuf[TF_MAX_PAYLOAD + TF_OVERHEAD_BYTES]; uint8_t sendbuf[TF_MAX_PAYLOAD_TX + TF_OVERHEAD_BYTES]; // TODO generate and send frames without a buffer
} tf; } tf;
//region Checksums //region Checksums
#if TF_CKSUM_TYPE == 0 #if TF_CKSUM_TYPE == 0
// NONE // NONE
#define CKSUM_RESET(cksum) #define CKSUM_RESET(cksum)
#define CKSUM_ADD(cksum, byte) #define CKSUM_ADD(cksum, byte)
#define CKSUM_FINALIZE(cksum) #define CKSUM_FINALIZE(cksum)
#elif TF_CKSUM_TYPE == 8 #elif TF_CKSUM_TYPE == 8
// ~XOR // ~XOR
#define CKSUM_RESET(cksum) do { cksum = 0; } while (0) #define CKSUM_RESET(cksum) do { cksum = 0; } while (0)
#define CKSUM_ADD(cksum, byte) do { cksum ^= byte; } while(0) #define CKSUM_ADD(cksum, byte) do { cksum ^= byte; } while(0)
#define CKSUM_FINALIZE(cksum) do { cksum = (TF_CKSUM)~cksum; } while(0) #define CKSUM_FINALIZE(cksum) do { cksum = (TF_CKSUM)~cksum; } while(0)
#elif TF_CKSUM_TYPE == 16 #elif TF_CKSUM_TYPE == 16
/** CRC table for the CRC-16. The poly is 0x8005 (x^16 + x^15 + x^2 + 1) */ /** CRC table for the CRC-16. The poly is 0x8005 (x^16 + x^15 + x^2 + 1) */
static const uint16_t crc16_table[256] = { static const uint16_t crc16_table[256] = {
0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
}; };
static inline uint16_t crc16_byte(uint16_t cksum, const uint8_t byte) static inline uint16_t crc16_byte(uint16_t cksum, const uint8_t byte)
{ {
return (cksum >> 8) ^ crc16_table[(cksum ^ byte) & 0xff]; return (cksum >> 8) ^ crc16_table[(cksum ^ byte) & 0xff];
} }
#define CKSUM_RESET(cksum) do { cksum = 0; } while (0) #define CKSUM_RESET(cksum) do { cksum = 0; } while (0)
#define CKSUM_ADD(cksum, byte) do { cksum = crc16_byte(cksum, byte); } while(0) #define CKSUM_ADD(cksum, byte) do { cksum = crc16_byte(cksum, byte); } while(0)
#define CKSUM_FINALIZE(cksum) #define CKSUM_FINALIZE(cksum)
#elif TF_CKSUM_TYPE == 32 #elif TF_CKSUM_TYPE == 32
static const uint32_t crc32_table[] = { /* CRC polynomial 0xedb88320 */ static const uint32_t crc32_table[] = { /* CRC polynomial 0xedb88320 */
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
}; };
static inline uint32_t crc32_byte(uint32_t cksum, const uint8_t byte) static inline uint32_t crc32_byte(uint32_t cksum, const uint8_t byte)
{ {
return (crc32_table[((cksum) ^ ((uint8_t)byte)) & 0xff] ^ ((cksum) >> 8)); return (crc32_table[((cksum) ^ ((uint8_t)byte)) & 0xff] ^ ((cksum) >> 8));
} }
#define CKSUM_RESET(cksum) do { cksum = (TF_CKSUM)0xFFFFFFFF; } while (0) #define CKSUM_RESET(cksum) do { cksum = (TF_CKSUM)0xFFFFFFFF; } while (0)
#define CKSUM_ADD(cksum, byte) do { cksum = crc32_byte(cksum, byte); } while(0) #define CKSUM_ADD(cksum, byte) do { cksum = crc32_byte(cksum, byte); } while(0)
#define CKSUM_FINALIZE(cksum) do { cksum = (TF_CKSUM)~cksum; } while(0) #define CKSUM_FINALIZE(cksum) do { cksum = (TF_CKSUM)~cksum; } while(0)
#endif #endif
@ -204,13 +210,17 @@ void _TF_FN TF_Init(TF_PEER peer_bit)
//region Listeners //region Listeners
bool _TF_FN TF_AddIdListener(TF_ID frame_id, TF_LISTENER cb) bool _TF_FN TF_AddIdListener(TF_MSG *msg, TF_LISTENER cb, TF_TICKS timeout)
{ {
size_t i; size_t i;
IdListener *lst;
for (i = 0; i < TF_MAX_ID_LST; i++) { for (i = 0; i < TF_MAX_ID_LST; i++) {
if (tf.id_listeners[i].fn == NULL) { lst = &tf.id_listeners[i];
tf.id_listeners[i].fn = cb; if (lst->fn == NULL) {
tf.id_listeners[i].id = frame_id; lst->fn = cb;
lst->id = msg->frame_id;
lst->userdata = msg->userdata;
lst->timeout_max = lst->timeout = timeout;
if (i >= tf.count_id_lst) { if (i >= tf.count_id_lst) {
tf.count_id_lst = i + 1; tf.count_id_lst = i + 1;
} }
@ -223,10 +233,12 @@ bool _TF_FN TF_AddIdListener(TF_ID frame_id, TF_LISTENER cb)
bool _TF_FN TF_AddTypeListener(TF_TYPE frame_type, TF_LISTENER cb) bool _TF_FN TF_AddTypeListener(TF_TYPE frame_type, TF_LISTENER cb)
{ {
size_t i; size_t i;
TypeListener *lst;
for (i = 0; i < TF_MAX_TYPE_LST; i++) { for (i = 0; i < TF_MAX_TYPE_LST; i++) {
if (tf.type_listeners[i].fn == NULL) { lst = &tf.type_listeners[i];
tf.type_listeners[i].fn = cb; if (lst->fn == NULL) {
tf.type_listeners[i].type = frame_type; lst->fn = cb;
lst->type = frame_type;
if (i >= tf.count_type_lst) { if (i >= tf.count_type_lst) {
tf.count_type_lst = i + 1; tf.count_type_lst = i + 1;
} }
@ -239,9 +251,11 @@ bool _TF_FN TF_AddTypeListener(TF_TYPE frame_type, TF_LISTENER cb)
bool _TF_FN TF_AddGenericListener(TF_LISTENER cb) bool _TF_FN TF_AddGenericListener(TF_LISTENER cb)
{ {
size_t i; size_t i;
GenericListener *lst;
for (i = 0; i < TF_MAX_GEN_LST; i++) { for (i = 0; i < TF_MAX_GEN_LST; i++) {
if (tf.generic_listeners[i].fn == NULL) { lst = &tf.generic_listeners[i];
tf.generic_listeners[i].fn = cb; if (lst->fn == NULL) {
lst->fn = cb;
if (i >= tf.count_generic_lst) { if (i >= tf.count_generic_lst) {
tf.count_generic_lst = i + 1; tf.count_generic_lst = i + 1;
} }
@ -254,10 +268,11 @@ bool _TF_FN TF_AddGenericListener(TF_LISTENER cb)
bool _TF_FN TF_RemoveIdListener(TF_ID frame_id) bool _TF_FN TF_RemoveIdListener(TF_ID frame_id)
{ {
size_t i; size_t i;
IdListener *lst;
for (i = 0; i < tf.count_id_lst; i++) { for (i = 0; i < tf.count_id_lst; i++) {
if (tf.id_listeners[i].fn != NULL lst = &tf.id_listeners[i];
&& tf.id_listeners[i].id == frame_id) { if (lst->fn != NULL && lst->id == frame_id) {
tf.id_listeners[i].fn = NULL; lst->fn = NULL;
if (i == tf.count_id_lst - 1) { if (i == tf.count_id_lst - 1) {
tf.count_id_lst--; tf.count_id_lst--;
} }
@ -270,10 +285,11 @@ bool _TF_FN TF_RemoveIdListener(TF_ID frame_id)
bool _TF_FN TF_RemoveTypeListener(TF_TYPE type) bool _TF_FN TF_RemoveTypeListener(TF_TYPE type)
{ {
size_t i; size_t i;
TypeListener *lst;
for (i = 0; i < tf.count_type_lst; i++) { for (i = 0; i < tf.count_type_lst; i++) {
if (tf.type_listeners[i].fn != NULL lst = &tf.type_listeners[i];
&& tf.type_listeners[i].type == type) { if (lst->fn != NULL && lst->type == type) {
tf.type_listeners[i].fn = NULL; lst->fn = NULL;
if (i == tf.count_type_lst - 1) { if (i == tf.count_type_lst - 1) {
tf.count_type_lst--; tf.count_type_lst--;
} }
@ -286,9 +302,11 @@ bool _TF_FN TF_RemoveTypeListener(TF_TYPE type)
bool _TF_FN TF_RemoveGenericListener(TF_LISTENER cb) bool _TF_FN TF_RemoveGenericListener(TF_LISTENER cb)
{ {
size_t i; size_t i;
GenericListener *lst;
for (i = 0; i < tf.count_generic_lst; i++) { for (i = 0; i < tf.count_generic_lst; i++) {
if (tf.generic_listeners[i].fn == cb) { lst = &tf.generic_listeners[i];
tf.generic_listeners[i].fn = NULL; if (lst->fn == cb) {
lst->fn = NULL;
if (i == tf.count_generic_lst - 1) { if (i == tf.count_generic_lst - 1) {
tf.count_generic_lst--; tf.count_generic_lst--;
} }
@ -299,9 +317,20 @@ bool _TF_FN TF_RemoveGenericListener(TF_LISTENER cb)
} }
/** Handle a message that was just collected & verified by the parser */ /** Handle a message that was just collected & verified by the parser */
static void _TF_FN TF_HandleReceivedMessage(TF_ID frame_id, TF_TYPE type, uint8_t *data, TF_LEN data_len) static void _TF_FN TF_HandleReceivedMessage(void)
{ {
size_t i; size_t i;
IdListener *ilst;
TypeListener *tlst;
GenericListener *glst;
// Prepare message object
TF_MSG msg;
msg.frame_id = tf.id;
msg.is_response = false;
msg.type = tf.type;
msg.data = tf.data;
msg.len = tf.len;
// Any listener can consume the message (return true), // Any listener can consume the message (return true),
// or let someone else handle it. // or let someone else handle it.
@ -311,28 +340,28 @@ static void _TF_FN TF_HandleReceivedMessage(TF_ID frame_id, TF_TYPE type, uint8_
// ID listeners first // ID listeners first
for (i = 0; i < tf.count_id_lst; i++) { for (i = 0; i < tf.count_id_lst; i++) {
if (tf.id_listeners[i].fn && (tf.id_listeners[i].id == frame_id)) { ilst = &tf.id_listeners[i];
if (tf.id_listeners[i].fn(frame_id, type, data, data_len)) { if (ilst->fn && ilst->id == frame_id) {
return; msg.userdata = ilst->userdata;
} if (ilst->fn(&msg)) return;
} }
} }
msg.userdata = NULL;
// clean up for the following listeners that don't use userdata
// Type listeners // Type listeners
for (i = 0; i < tf.count_type_lst; i++) { for (i = 0; i < tf.count_type_lst; i++) {
if (tf.type_listeners[i].fn && (tf.type_listeners[i].type == type)) { tlst = &tf.type_listeners[i];
if (tf.type_listeners[i].fn(frame_id, type, data, data_len)) { if (tlst->fn && tlst->type == type) {
return; if (tlst->fn(&msg)) return;
}
} }
} }
// Generic listeners // Generic listeners
for (i = 0; i < tf.count_generic_lst; i++) { for (i = 0; i < tf.count_generic_lst; i++) {
if (tf.generic_listeners[i].fn) { glst = &tf.generic_listeners[i];
if (tf.generic_listeners[i].fn(frame_id, type, data, data_len)) { if (glst->fn) {
return; if (glst->fn(&msg)) return;
}
} }
} }
} }
@ -369,7 +398,7 @@ static void _TF_FN TF_ParsBeginFrame(void) {
void _TF_FN TF_AcceptChar(unsigned char c) void _TF_FN TF_AcceptChar(unsigned char c)
{ {
// Timeout - clear // Parser timeout - clear
if (tf.parser_timeout_ticks >= TF_PARSER_TIMEOUT_TICKS) { if (tf.parser_timeout_ticks >= TF_PARSER_TIMEOUT_TICKS) {
TF_ResetParser(); TF_ResetParser();
} }
@ -436,7 +465,7 @@ void _TF_FN TF_AcceptChar(unsigned char c)
} }
if (tf.len == 0) { if (tf.len == 0) {
TF_HandleReceivedMessage(tf.id, tf.type, NULL, 0); TF_HandleReceivedMessage();
TF_ResetParser(); TF_ResetParser();
break; break;
} }
@ -465,7 +494,7 @@ void _TF_FN TF_AcceptChar(unsigned char c)
if (tf.rxi == tf.len) { if (tf.rxi == tf.len) {
#if TF_CKSUM_TYPE == 0 #if TF_CKSUM_TYPE == 0
// All done // All done
TF_HandleReceivedMessage(tf.id, tf.type, tf.data, tf.len); TF_HandleReceivedMessage();
TF_ResetParser(); TF_ResetParser();
#else #else
// Enter DATA_CKSUM state // Enter DATA_CKSUM state
@ -481,7 +510,7 @@ void _TF_FN TF_AcceptChar(unsigned char c)
// Check the header checksum against the computed value // Check the header checksum against the computed value
CKSUM_FINALIZE(tf.cksum); CKSUM_FINALIZE(tf.cksum);
if (!tf.discard_data && tf.cksum == tf.ref_cksum) { if (!tf.discard_data && tf.cksum == tf.ref_cksum) {
TF_HandleReceivedMessage(tf.id, tf.type, tf.data, tf.len); TF_HandleReceivedMessage();
} }
TF_ResetParser(); TF_ResetParser();
@ -503,7 +532,7 @@ void _TF_FN TF_AcceptChar(unsigned char c)
* @param use_expl_id - whether to use the previous param * @param use_expl_id - whether to use the previous param
* @return nr of bytes in outbuff used by the frame, TF_ERROR (-1) on failure * @return nr of bytes in outbuff used by the frame, TF_ERROR (-1) on failure
*/ */
static int _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr, static inline int _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
TF_TYPE type, TF_TYPE type,
const uint8_t *data, TF_LEN data_len, const uint8_t *data, TF_LEN data_len,
TF_ID explicit_id, bool use_expl_id) TF_ID explicit_id, bool use_expl_id)
@ -584,73 +613,73 @@ static int _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
return pos; return pos;
} }
bool _TF_FN TF_Send(TF_TYPE type, bool _TF_FN TF_Send(TF_MSG *msg, TF_LISTENER listener, TF_TICKS timeout)
const uint8_t *payload, TF_LEN payload_len,
TF_LISTENER listener,
TF_ID *id_ptr)
{ {
TF_ID msgid = 0;
int len; int len;
len = TF_Compose(tf.sendbuf, &msgid, type, payload, payload_len, 0, false); len = TF_Compose(tf.sendbuf,
&msg->frame_id,
msg->type,
msg->data,
msg->len,
msg->frame_id,
msg->is_response);
if (len == TF_ERROR) return false; if (len == TF_ERROR) return false;
if (listener) TF_AddIdListener(msgid, listener); if (listener) TF_AddIdListener(msg->frame_id, listener);
if (id_ptr) *id_ptr = msgid;
TF_WriteImpl((const uint8_t *) tf.sendbuf, (TF_LEN)len); TF_WriteImpl((const uint8_t *) tf.sendbuf, (TF_LEN)len);
return true; return true;
} }
// Like TF_Send, but with explicit frame ID // Like TF_Send, but with explicit frame ID
bool _TF_FN TF_Respond(TF_TYPE type, bool _TF_FN TF_Respond(TF_MSG *msg, bool renew)
const uint8_t *data, TF_LEN data_len,
TF_ID frame_id)
{
int len;
len = TF_Compose(tf.sendbuf, NULL, type, data, data_len, frame_id, true);
if (len == TF_ERROR) return false;
TF_WriteImpl(tf.sendbuf, (TF_LEN)len);
return true;
}
/**
* Like TF_Send(), but with no data
*/
bool _TF_FN TF_Send0(TF_TYPE type,
TF_LISTENER listener,
TF_ID *id_ptr)
{ {
return TF_Send(type, NULL, 0, listener, id_ptr); msg->is_response = true;
} bool suc = TF_Send(msg, NULL, 0);
/** if (suc && renew) TF_RenewIdListener(msg->frame_id);
* Like TF_Send(), but with just 1 data byte return suc;
*/
bool _TF_FN TF_Send1(TF_TYPE type, uint8_t b1,
TF_LISTENER listener,
TF_ID *id_ptr)
{
unsigned char b[] = {b1};
return TF_Send(type, b, 1, listener, id_ptr);
} }
/** bool _TF_FN TF_RenewIdListener(TF_ID id)
* Like TF_Send(), but with just 2 data bytes
*/
bool _TF_FN TF_Send2(TF_TYPE type, uint8_t b1, uint8_t b2,
TF_LISTENER listener,
TF_ID *id_ptr)
{ {
unsigned char b[] = {b1, b2}; IdListener *lst;
return TF_Send(type, b, 2, listener, id_ptr); for (i = 0; i < tf.count_id_lst; i++) {
lst = &tf.id_listeners[i];
if (lst->fn && lst->id == id) {
lst->timeout = lst->timeout_max;
return true;
}
}
return false;
} }
/** Timebase hook - for timeouts */ /** Timebase hook - for timeouts */
void _TF_FN TF_Tick(void) void _TF_FN TF_Tick(void)
{ {
int i;
TF_MSG msg;
IdListener *lst;
// increment parser timeout (timeout is handled when receiving next byte)
if (tf.parser_timeout_ticks < TF_PARSER_TIMEOUT_TICKS) { if (tf.parser_timeout_ticks < TF_PARSER_TIMEOUT_TICKS) {
tf.parser_timeout_ticks++; tf.parser_timeout_ticks++;
} }
// decrement and expire ID listeners
for (i = 0; i < tf.count_id_lst; i++) {
lst = &tf.id_listeners[i];
if (lst->fn && lst->timeout > 0) {
if (--lst->timeout != 0) continue;
// Notify listener about timeout
msg.userdata = lst->userdata;
msg.data = NULL; // this is a signal that listener should clean up
lst->fn(msg);
lst->fn = NULL; // Discard listener
}
}
} }

34
TinyFrame.h
Unescape View File

@ -14,7 +14,8 @@
// Maximum send / receive payload size (static buffers size) // Maximum send / receive payload size (static buffers size)
// Larger payloads will be rejected. // Larger payloads will be rejected.
#define TF_MAX_PAYLOAD 1024 #define TF_MAX_PAYLOAD_RX 1024
#define TF_MAX_PAYLOAD_TX 1024
// --- Listener counts - determine sizes of the static slot tables --- // --- Listener counts - determine sizes of the static slot tables ---
@ -57,6 +58,7 @@
//------------------------- End of user config ------------------------------ //------------------------- End of user config ------------------------------
typedef unsigned int TF_TICKS;
//region Resolve data types //region Resolve data types
@ -138,12 +140,12 @@ typedef enum {
/** Data structure for sending / receiving messages */ /** Data structure for sending / receiving messages */
typedef struct { typedef struct {
TF_ID frame_id, // message ID TF_ID frame_id; // message ID
bool is_response, // internal flag, set when using the Respond function. frame_id is then kept unchanged. bool is_response; // internal flag, set when using the Respond function. frame_id is then kept unchanged.
TF_TYPE type, // received or sent message type TF_TYPE type; // received or sent message type
const uint8_t *data, // buffer of received data or data to send. NULL = listener timed out, free userdata! const uint8_t *data; // buffer of received data or data to send. NULL = listener timed out, free userdata!
TF_LEN len, // length of the buffer TF_LEN len; // length of the buffer
void *userdata // here's a place for custom data; this data will be void *userdata; // here's a place for custom data; this data will be
// stored with the listener // stored with the listener
} TF_MSG; } TF_MSG;
@ -188,11 +190,12 @@ void TF_ResetParser(void);
/** /**
* Register a frame type listener. * Register a frame type listener.
* *
* @param frame_type - frame ID to listen for * @param msg - message (contains frame_id and userdata)
* @param cb - callback * @param cb - callback
* @param timeout - timeout in ticks to auto-remove the listener (0 = keep forever)
* @return slot index (for removing), or TF_ERROR (-1) * @return slot index (for removing), or TF_ERROR (-1)
*/ */
bool TF_AddIdListener(TF_ID frame_id, TF_LISTENER cb); bool TF_AddIdListener(TF_MSG *msg, TF_LISTENER cb, TF_TICKS timeout);
/** /**
* Remove a listener by the message ID it's registered for * Remove a listener by the message ID it's registered for
@ -240,15 +243,24 @@ bool TF_RemoveGenericListener(TF_LISTENER cb);
* @param timeout - listener expiry time in ticks * @param timeout - listener expiry time in ticks
* @return success * @return success
*/ */
bool TF_Send(TF_MSG *msg, TF_LISTENER listener, unsigned int timeout); bool TF_Send(TF_MSG *msg, TF_LISTENER listener, TF_TICKS timeout);
/** /**
* Send a response to a received message. * Send a response to a received message.
* *
* @param msg - message struct. ID is read from frame_id * @param msg - message struct. ID is read from frame_id
* @param renew - renew the listener timeout (waiting for more data)
* @return success * @return success
*/ */
bool TF_Respond(TF_MSG *msg); bool TF_Respond(TF_MSG *msg, bool renew);
/**
* Renew ID listener timeout
*
* @param id - listener ID to renew
* @return true if listener was found and renewed
*/
bool TF_RenewIdListener(TF_ID id);
/** /**
* Accept incoming bytes & parse frames * Accept incoming bytes & parse frames

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