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CC26xx IEEE mode radio driver: allow reception of packets shorter than 5 bytes

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This commit is contained in:
Atis Elsts 2018-02-28 14:45:07 +00:00
parent abeffecbff
commit df160d9347
1 changed files with 34 additions and 20 deletions
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54
arch/cpu/cc26xx-cc13xx/rf-core/ieee-mode.c
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@ -263,6 +263,20 @@ static uint8_t rx_buf_1[RX_BUF_SIZE] CC_ALIGN(4);
static uint8_t rx_buf_2[RX_BUF_SIZE] CC_ALIGN(4); static uint8_t rx_buf_2[RX_BUF_SIZE] CC_ALIGN(4);
static uint8_t rx_buf_3[RX_BUF_SIZE] CC_ALIGN(4); static uint8_t rx_buf_3[RX_BUF_SIZE] CC_ALIGN(4);
#define RX_BUF_INCLUDE_CRC 1
#define RX_BUF_INCLUDE_RSSI 1
#define RX_BUF_INCLUDE_CORR 1
#define RX_BUF_INCLUDE_TIMESTAMP 1
/* The size of the metadata (excluding the packet length field) */
#define RX_BUF_METADATA_SIZE \
(2 * RX_BUF_INCLUDE_CRC + RX_BUF_INCLUDE_RSSI + RX_BUF_INCLUDE_CORR + 4 * RX_BUF_INCLUDE_TIMESTAMP)
/* The offset of the packet length in a rx buffer */
#define RX_BUF_LENGTH_OFFSET sizeof(rfc_dataEntry_t)
/* The offset of the packet data in a rx buffer */
#define RX_BUF_DATA_OFFSET (RX_BUF_LENGTH_OFFSET + 1)
/* The RX Data Queue */ /* The RX Data Queue */
static dataQueue_t rx_data_queue = { 0 }; static dataQueue_t rx_data_queue = { 0 };
@ -565,22 +579,22 @@ init_rx_buffers(void)
entry = (rfc_dataEntry_t *)rx_buf_0; entry = (rfc_dataEntry_t *)rx_buf_0;
entry->pNextEntry = rx_buf_1; entry->pNextEntry = rx_buf_1;
entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE; entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE;
entry->length = sizeof(rx_buf_0) - 8; entry->length = sizeof(rx_buf_0) - sizeof(*entry);
entry = (rfc_dataEntry_t *)rx_buf_1; entry = (rfc_dataEntry_t *)rx_buf_1;
entry->pNextEntry = rx_buf_2; entry->pNextEntry = rx_buf_2;
entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE; entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE;
entry->length = sizeof(rx_buf_0) - 8; entry->length = sizeof(rx_buf_0) - sizeof(*entry);
entry = (rfc_dataEntry_t *)rx_buf_2; entry = (rfc_dataEntry_t *)rx_buf_2;
entry->pNextEntry = rx_buf_3; entry->pNextEntry = rx_buf_3;
entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE; entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE;
entry->length = sizeof(rx_buf_0) - 8; entry->length = sizeof(rx_buf_0) - sizeof(*entry);
entry = (rfc_dataEntry_t *)rx_buf_3; entry = (rfc_dataEntry_t *)rx_buf_3;
entry->pNextEntry = rx_buf_0; entry->pNextEntry = rx_buf_0;
entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE; entry->config.lenSz = DATA_ENTRY_LENSZ_BYTE;
entry->length = sizeof(rx_buf_0) - 8; entry->length = sizeof(rx_buf_0) - sizeof(*entry);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
@ -601,11 +615,11 @@ init_rf_params(void)
cmd->rxConfig.bAutoFlushCrc = 1; cmd->rxConfig.bAutoFlushCrc = 1;
cmd->rxConfig.bAutoFlushIgn = 0; cmd->rxConfig.bAutoFlushIgn = 0;
cmd->rxConfig.bIncludePhyHdr = 0; cmd->rxConfig.bIncludePhyHdr = 0;
cmd->rxConfig.bIncludeCrc = 1; cmd->rxConfig.bIncludeCrc = RX_BUF_INCLUDE_CRC;
cmd->rxConfig.bAppendRssi = 1; cmd->rxConfig.bAppendRssi = RX_BUF_INCLUDE_RSSI;
cmd->rxConfig.bAppendCorrCrc = 1; cmd->rxConfig.bAppendCorrCrc = RX_BUF_INCLUDE_CORR;
cmd->rxConfig.bAppendSrcInd = 0; cmd->rxConfig.bAppendSrcInd = 0;
cmd->rxConfig.bAppendTimestamp = 1; cmd->rxConfig.bAppendTimestamp = RX_BUF_INCLUDE_TIMESTAMP;
cmd->pRxQ = &rx_data_queue; cmd->pRxQ = &rx_data_queue;
cmd->pOutput = (rfc_ieeeRxOutput_t *)rf_stats; cmd->pOutput = (rfc_ieeeRxOutput_t *)rf_stats;
@ -1079,8 +1093,15 @@ read_frame(void *buf, unsigned short buf_len)
return 0; return 0;
} }
len = rx_read_entry[8] - 8; len = rx_read_entry[RX_BUF_LENGTH_OFFSET];
if(len <= RX_BUF_METADATA_SIZE) {
PRINTF("RF: too short!");
release_data_entry();
return 0;
}
len -= RX_BUF_METADATA_SIZE;
if(len > buf_len) { if(len > buf_len) {
PRINTF("RF: too long\n"); PRINTF("RF: too long\n");
@ -1088,20 +1109,13 @@ read_frame(void *buf, unsigned short buf_len)
return 0; return 0;
} }
if(len < 5) { memcpy(buf, (uint8_t *)rx_read_entry + RX_BUF_DATA_OFFSET, len);
PRINTF("RF: too short\n");
release_data_entry(); last_rssi = (int8_t)rx_read_entry[RX_BUF_DATA_OFFSET + len + 2];
return 0; last_corr_lqi = (uint8_t)rx_read_entry[RX_BUF_DATA_OFFSET + len + 3] & STATUS_CORRELATION;
}
memcpy(buf, (char *)&rx_read_entry[9], len);
last_rssi = (int8_t)rx_read_entry[9 + len + 2];
last_corr_lqi = (uint8_t)rx_read_entry[9 + len + 3] & STATUS_CORRELATION;
/* get the timestamp */ /* get the timestamp */
memcpy(&rat_timestamp, (char *)rx_read_entry + 9 + len + 4, 4); memcpy(&rat_timestamp, (uint8_t *)rx_read_entry + RX_BUF_DATA_OFFSET + len + 4, 4);
last_packet_timestamp = calc_last_packet_timestamp(rat_timestamp); last_packet_timestamp = calc_last_packet_timestamp(rat_timestamp);