THB2/bthome_phy6222/SDK/components/ble/controller/ll_buf.h

110 lines
3.5 KiB
C

/*************
ll_buf.h
SDK_LICENSE
***************/
#ifndef _LL_BUF_H_
#define _LL_BUF_H_
#include <stdint.h>
#define MAX_ADV_BUF 1 // buffer advertisement packet
#define TYP_CONN_BUF_LEN 4 // typical packet number per connection event
#define MAX_LL_BUF_LEN 8 // maximum LL buffer for Rx/Tx packet
//#define LL_CTRL_PDU_LEN 29 //V4.0/4.2: 2octets header + 27 octets payload
//#define LL_ADV_PDU_LEN 39 //V4.0/4.2: 2octets header + 37 octets payload
//#define LL_DATA_PDU_LEN 33 //V4.0 : 2octets header + 31 octets payload
// for Rx FIFO, HW will pack zero bytes to align 4bytes boarder
// BLE 4.0, PDU length < 39, 3Bytes CRC will also be read.
// note that PDU head is write in "rxheader/txheader" field, the buffer need (39 + 3 - 2) = 40 bytes,
// add 2 bytes to align 4 bytes edge
//#define BLE_PACKET_BUF_LEN 42
//257+3-2=256
// BLE5.0, PDU length: maximum 257 octets, 3 octets CRC, 2 octets PDU head is write in "rxheader/txheader" field
//#define BLE_PACKET_BUF_LEN 258 //(257+3-2)
// BLE 5.1, PDU length: 2-258 octets, 3 octets CRC, 2 octets PDU head is write in "rxheader/txheader" field
// length should align to word edge, so + 3 octet
#define BLE_PACKET_BUF_LEN 262 //(258+3-2) + 3
#define RX_BUF_LEN BLE_PACKET_BUF_LEN
#define TX_BUF_LEN BLE_PACKET_BUF_LEN
#define TX_CTRL_BUF_LEN 34 //(27+4+3)
#define LL_PDU_LENGTH_SUPPORTED_MAX_TX_OCTECTS 251
#define LL_PDU_LENGTH_SUPPORTED_MAX_RX_OCTECTS 251
#define LL_PDU_LENGTH_SUPPORTED_MAX_TX_TIME 2120
#define LL_PDU_LENGTH_SUPPORTED_MAX_RX_TIME 2120
#define LL_PDU_LENGTH_INITIAL_MAX_TX_OCTECTS 27
#define LL_PDU_LENGTH_INITIAL_MAX_RX_OCTECTS 27
#define LL_PDU_LENGTH_INITIAL_MAX_TX_TIME 328
#define LL_PDU_LENGTH_INITIAL_MAX_RX_TIME 328
// BBB update
struct ll_pkt_desc
{
uint32_t valid; // mean a valid data received from ble
uint16_t header;
uint8_t data[2];
};
struct buf_rx_desc
{
uint32_t valid; // mean a valid data received from ble
/// rx header
uint16_t rxheader;
uint8_t data[RX_BUF_LEN ]; // for v4.2 BLE, set to 256
};
struct buf_tx_desc
{
uint32_t valid; // means a valid data to wait for send to ble
//uint32_t sent; // means tha data has been sent before
/// tx header
uint16_t txheader;
/// data
uint8_t data[TX_BUF_LEN];
};
typedef struct
{
uint16_t header;
//uint8_t data[TX_BUF_LEN];
uint8_t data[TX_CTRL_BUF_LEN];
} __attribute__((aligned(4))) ctrl_packet_buf;
typedef struct
{
#if 0
struct buf_tx_desc tx_conn_desc[MAX_LL_BUF_LEN]; // new Tx data buffer
struct buf_rx_desc rx_conn_desc[MAX_LL_BUF_LEN];
struct buf_tx_desc tx_not_ack_pkt;
struct buf_tx_desc tx_ntrm_pkts[MAX_LL_BUF_LEN];
#endif
struct ll_pkt_desc *tx_conn_desc[MAX_LL_BUF_LEN]; // new Tx data buffer
struct ll_pkt_desc *rx_conn_desc[MAX_LL_BUF_LEN];
struct ll_pkt_desc *tx_not_ack_pkt;
struct ll_pkt_desc *tx_ntrm_pkts[MAX_LL_BUF_LEN];
uint8_t ntrm_cnt; // number of packets not transmit
uint8_t tx_write;
uint8_t tx_read;
uint8_t tx_loop; // flag for write ptr & read ptr work in the same virtual buffer bank
uint8_t rx_write;
uint8_t rx_read;
uint8_t rx_loop; // flag for write ptr & read ptr work in the same virtual buffer bank
} llLinkBuf_t;
#endif