#include <msp430.h>
#include <msp430xgeneric.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "mw_main.h"
#include "mw_uart.h"
#include "mw_bt.h"
#include "bt_hci.h"
#include "bt_l2cap.h"
static uint8_t local_bdaddr[6];
uint8_t *bt_hci_get_local_bdaddr(void)
{
return local_bdaddr;
}
static void bt_print_bd_addr(uint8_t *bd_addr)
{
#if defined MW_DEVBOARD_V2
int i;
char nums[4];
for (i=5; i>=0; i--) {
snprintf(nums, 4, "%02x", bd_addr[i]);
debug_uart_tx(nums);
if (i>0)
debug_uart_tx_char(':');
}
#endif
}
void bt_hci_process_acl_packet(unsigned char *packet)
{
#if defined MW_DEVBOARD_V2
char tstr[32];
#endif
uint16_t dlen;
uint16_t handle;
L2CAP_PB_FLAG PB;
L2CAP_BC_FLAG BC;
uint16_t channel;
uint16_t mlen;
// debug_uart_tx("ACL packet, ");
handle = packet[0] | ((packet[1] & 0x0f) << 8);
// snprintf(tstr, 32, "handle 0x%04x ", handle);
// debug_uart_tx(tstr);
PB = (packet[1] >> 4) & 0x03;
BC = (packet[1] >> 6) & 0x03;
// snprintf(tstr, 32, "PB 0x%02x BC 0x%02x ", PB, BC);
// debug_uart_tx(tstr);
dlen = packet[2] | ((uint16_t)packet[3] << 8);
// snprintf(tstr, 32, "len 0x%04x \n", dlen);
// debug_uart_tx(tstr);
// debug_dump_hex(dlen+4, packet);
channel = packet[4+2] | (packet[4+3] << 8);
mlen = packet[4] | (packet[4+1] << 8);
switch (channel) {
case L2CAP_CID_SIGNALING:
bt_l2cap_proc_signalling(handle, (packet+8), mlen);
break;
case L2CAP_CID_CONNECTIONLESS_CHANNEL:
break;
case L2CAP_CID_ATTRIBUTE_PROTOCOL:
break;
case L2CAP_CID_SIGNALING_LE:
break;
case L2CAP_CID_SECURITY_MANAGER_PROTOCOL:
break;
default:
if (channel > 0x3f) {
// just for sure, add a 0 as string delimiter
packet[mlen+8] = 0x00;
bt_l2cap_proc_dyn_channel(channel, handle, (packet+8), mlen);
} else {
#if defined MW_DEVBOARD_V2
snprintf(tstr, 32, "L2CAP unhandled CID 0x%04x\n", channel);
debug_uart_tx(tstr);
#endif
}
break;
}
}
void bt_hci_process_event_packet(unsigned char *packet)
{
#if defined MW_DEVBOARD_V2
char tstr[32];
#endif
int i;
// uint8_t bd_addr[6];
uint32_t dev_type;
// debug_uart_tx("Event packet, ");
// snprintf(tstr, 32, "evt 0x%02x: ", packet[0]);
// debug_uart_tx(tstr);
switch (packet[0]) {
case HCI_EVENT_INQUIRY_COMPLETE:
debug_uart_tx("inq complete\n");
break;
case HCI_EVENT_INQUIRY_RESULT:
debug_uart_tx("inq result\n");
break;
case HCI_EVENT_CONNECTION_COMPLETE:
debug_uart_tx("con complete from ");
#if defined MW_DEVBOARD_V2
bt_print_bd_addr((packet+5));
snprintf(tstr, 32, " status 0x%02x handle 0x%02x", packet[2], packet[3]);
debug_uart_tx(tstr);
snprintf(tstr, 32, " type 0x%02x enc 0x%02x\n", packet[11], packet[12]);
debug_uart_tx(tstr);
if (packet[2] == 0x00)
debug_uart_tx("connection established\n");
else
debug_uart_tx("connection failed\n");
#endif
break;
case HCI_EVENT_CONNECTION_REQUEST: {
uint8_t bd_addr[7];
switch (packet[11]) {
case HCI_LINK_TYPE_SCO:
debug_uart_tx("SCO");
break;
case HCI_LINK_TYPE_ACL:
debug_uart_tx("ACL");
break;
case HCI_LINK_TYPE_ESCO:
debug_uart_tx("eSCO");
break;
default:
debug_uart_tx("unknown type");
break;
}
debug_uart_tx(" con req from ");
for (i=0; i<6; i++) {
bd_addr[i] = packet[i+2];
}
bt_print_bd_addr(bd_addr);
dev_type = (uint32_t)packet[8] << 16;
dev_type |= (uint32_t)packet[9] << 8;
dev_type |= packet[10];
#if defined MW_DEVBOARD_V2
snprintf(tstr, 32, " rem. dtype 0x%06lx\n", dev_type);
debug_uart_tx(tstr);
#endif
//memcpy(tstr, bd_addr, 6);
//tstr[6] = 0x01; /* remain slave */
bd_addr[6] = 0x01; /* remain slave */
bt_hci_cmd(HCI_LINK_CTRL_OGF, HCI_ACCEPT_CONN_REQ_OCF, 7, bd_addr);
} break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
debug_uart_tx("discon complete\n");
break;
case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT:
debug_uart_tx("auth complete\n");
break;
case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
debug_uart_tx("rem name req complete\n");
break;
case HCI_EVENT_ENCRYPTION_CHANGE:
debug_uart_tx("enc change\n");
break;
case HCI_EVENT_CHANGE_CONNECTION_LINK_KEY_COMPLETE:
debug_uart_tx("change con link key complete\n");
break;
case HCI_EVENT_MASTER_LINK_KEY_COMPLETE:
debug_uart_tx("master link key complete\n");
break;
case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE:
debug_uart_tx("read rem feat. complete\n");
break;
case HCI_EVENT_READ_REMOTE_VERSION_INFORMATION_COMPLETE:
debug_uart_tx("read rem version complete\n");
break;
case HCI_EVENT_QOS_SETUP_COMPLETE:
debug_uart_tx("qos setup complete\n");
break;
case HCI_EVENT_COMMAND_COMPLETE:
// snprintf(tstr, 32, "%d cmd(s) complete: 0x%02x%02x=%d", packet[2], packet[3], packet[4], packet[5]);
// debug_uart_tx(tstr);
if (packet[2] > 0 &&
packet[3] == ((HCI_R_BD_ADDR_OCF | (HCI_INFO_PARAM_OGF << 10)) & 0xff) &&
packet[4] == (((HCI_R_BD_ADDR_OCF | (HCI_INFO_PARAM_OGF << 10)) & 0xff00) >> 8)) { // read local bdaddr
memcpy(local_bdaddr, (packet+6), 6);
#if defined MW_DEVBOARD_V2
debug_uart_tx("local bdaddr = ");
bt_print_bd_addr((uint8_t *)(packet+6));
debug_uart_tx("\n");
#endif
}
break;
case HCI_EVENT_COMMAND_STATUS:
debug_uart_tx("cmd status\n");
break;
case HCI_EVENT_HARDWARE_ERROR:
#if defined MW_DEVBOARD_V2
debug_uart_tx("hardw err");
snprintf(tstr, 32, " 0x%02x\n", packet[2]);
debug_uart_tx(tstr);
#endif
break;
case HCI_EVENT_FLUSH_OCCURED:
debug_uart_tx("flush occured\n");
break;
case HCI_EVENT_ROLE_CHANGE:
debug_uart_tx("role change\n");
break;
case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:
debug_uart_tx("numb compl. packets\n");
break;
case HCI_EVENT_MODE_CHANGE_EVENT:
debug_uart_tx("mode change\n");
break;
case HCI_EVENT_RETURN_LINK_KEYS:
debug_uart_tx("return link keys\n");
break;
case HCI_EVENT_PIN_CODE_REQUEST:
debug_uart_tx("pin code request\n");
#if defined MW_DEVBOARD_V2
debug_uart_tx("from ");
bt_print_bd_addr((uint8_t *)(packet+2));
debug_uart_tx("\n");
#endif
memmove(packet, (packet+2), 6);
packet[6] = 0x04; // PIN has length of 4
packet[7] = '4';
packet[8] = '3';
packet[9] = '1';
packet[10] = '2';
bt_hci_cmd(HCI_LINK_CTRL_OGF, HCI_PIN_CODE_REQ_REP_OCF, 11, packet);
break;
case HCI_EVENT_LINK_KEY_REQUEST:
debug_uart_tx("link key request\n");
break;
case HCI_EVENT_LINK_KEY_NOTIFICATION:
debug_uart_tx("link key notify\n");
break;
case HCI_EVENT_DATA_BUFFER_OVERFLOW:
debug_uart_tx("evt data buf overflow\n");
break;
case HCI_EVENT_MAX_SLOTS_CHANGED:
debug_uart_tx("max slots changed\n");
break;
case HCI_EVENT_READ_CLOCK_OFFSET_COMPLETE:
debug_uart_tx("read clock offset compl.\n");
break;
case HCI_EVENT_PACKET_TYPE_CHANGED:
debug_uart_tx("packet type changed\n");
break;
case HCI_EVENT_PAGE_SCAN_REPETION_MODE_CHANGE:
debug_uart_tx("page scan repetition mode changed\n");
break;
case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
debug_uart_tx("inq result with RSSI\n");
break;
case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE:
debug_uart_tx("ext. inq. resp.\n");
break;
case HCI_EVENT_LE_META:
debug_uart_tx("LE meta\n");
break;
case HCI_EVENT_VENDOR_SPECIFIC:
debug_uart_tx("vend. spec.\n");
break;
default:
debug_uart_tx("unknown\n");
break;
}
// debug_uart_tx("\n");
// for (i=2; i<=(packet[1]+1); i++) {
// snprintf(tstr, 32, " 0x%02x", packet[i]);
// debug_uart_tx(tstr);
// }
// debug_uart_tx("\n");
}
typedef enum {
HCI_PACKET_START = 0,
HCI_CMD_PACKET,
HCI_ACL_PACKET_HEADER,
HCI_ACL_PACKET_DATA,
HCI_SCO_PACKET,
HCI_EVENT_PACKET_HEADER,
HCI_EVENT_PACKET_DATA,
HCI_EHCILL_PACKET,
EHCILL_SLEEPING
} bt_hci_state_t;
static bt_hci_state_t state = HCI_PACKET_START;
unsigned char bt_feed_packet_data(unsigned char pdata)
{
char tstr[32];
static unsigned char packet[255];
static uint16_t bytes_left = 0;
static uint16_t pdata_pos = 0;
// snprintf(tstr, 32, "bt 0x%02x ", pdata);
// debug_uart_tx(tstr);
switch (state) {
case HCI_PACKET_START:
switch (pdata) {
case HCI_EVENT_PACKET:
state = HCI_EVENT_PACKET_HEADER;
bytes_left = 1;
pdata_pos = 0;
memset(packet, 0, 64);
break;
case HCI_ACL_DATA_PACKET:
state = HCI_ACL_PACKET_HEADER;
bytes_left = 3;
pdata_pos = 0;
memset(packet, 0, 64);
break;
case EHCILL_GO_TO_SLEEP_IND:
debug_uart_tx("eHCILL go to sleep ind\n");
state = HCI_PACKET_START;
// disable BT UART?
// mabye UCA1CTL1 = UCSWRST ?
pdata = EHCILL_GO_TO_SLEEP_ACK;
mw_bt_uart_tx(&pdata, 0x01);
BT_IO_POUT |= BT_IO_RTS; // pull RTS -> stop data
P1IFG &= ~BT_IO_CTS;
P1IE |= BT_IO_CTS;
state = EHCILL_SLEEPING;
break;
case EHCILL_GO_TO_SLEEP_ACK:
debug_uart_tx("eHCILL go to sleep ack\n");
state = HCI_PACKET_START;
break;
case EHCILL_WAKE_UP_IND:
debug_uart_tx("eHCILL wake up ind\n");
state = HCI_PACKET_START;
break;
case EHCILL_WAKE_UP_ACK:
debug_uart_tx("eHCILL wake up ack\n");
state = HCI_PACKET_START;
break;
default:
debug_uart_tx("unexpected packet start\n");
break;
}
break;
case HCI_EVENT_PACKET_HEADER:
if (bytes_left != 0) {
packet[pdata_pos++] = pdata;
bytes_left--;
} else {
state = HCI_EVENT_PACKET_DATA;
packet[pdata_pos++] = pdata;
bytes_left = pdata;
}
break;
case HCI_EVENT_PACKET_DATA:
packet[pdata_pos++] = pdata;
bytes_left--;
if (bytes_left == 0) {
state = HCI_PACKET_START;
bt_hci_process_event_packet(packet);
}
break;
case HCI_ACL_PACKET_HEADER:
if (bytes_left != 0) {
packet[pdata_pos++] = pdata;
bytes_left--;
} else {
state = HCI_ACL_PACKET_DATA;
packet[pdata_pos] = pdata;
bytes_left = (packet[pdata_pos-1] | (packet[pdata_pos] << 8));
// snprintf(tstr, 32, "ACL data len 0x%04x\n", bytes_left);
// debug_uart_tx(tstr);
// snprintf(tstr, 32, "%d (0x%02x 0x%02x)\n", pdata_pos, packet[pdata_pos-1], packet[pdata_pos]);
// debug_uart_tx(tstr);
pdata_pos++;
}
break;
case HCI_ACL_PACKET_DATA:
// snprintf(tstr, 32, "%02x ", pdata);
// debug_uart_tx(tstr);
packet[pdata_pos++] = pdata;
bytes_left--;
if (bytes_left == 0) {
// debug_uart_tx("\n");
state = HCI_PACKET_START;
bt_hci_process_acl_packet(packet);
}
break;
default:
debug_uart_tx("hosed HCI state!\n");
snprintf(tstr, 32, " state = %d\n", state);
debug_uart_tx(tstr);
break;
};
// one byte consumed
return 1;
}
typedef struct {
uint8_t type;
uint16_t cmd;
uint8_t length;
} __attribute__((packed)) bt_hci_cmd_t;
void bt_hci_cmd(const uint8_t OGF, const uint8_t OCF, const uint8_t data_len, const void *data)
{
bt_hci_cmd_t packet;
if (state == EHCILL_SLEEPING) {
uint8_t ehcill_p = EHCILL_WAKE_UP_IND;
debug_uart_tx("HCILL wakeup\n");
state = HCI_PACKET_START;
mw_bt_uart_tx(&ehcill_p, 1);
__delay_cycles(300000);
BT_IO_POUT &= ~BT_IO_RTS; // drop RTS -> start data
}
packet.type = HCI_COMMAND_PACKET;
packet.cmd = OCF | (OGF<<10);
packet.length = data_len;
mw_bt_uart_tx(&packet, sizeof(bt_hci_cmd_t));
if (data_len > 0 && data != NULL)
mw_bt_uart_tx(data, data_len);
}
typedef struct {
uint8_t type;
uint16_t handle;
uint16_t total_length;
uint16_t data_length;
uint16_t channel;
} __attribute__((packed)) bt_hci_acl_t;
void bt_acl_send(const uint16_t handle, const uint8_t PB, const uint8_t BC, const uint16_t channel, const uint16_t dlen, const void *dat)
{
bt_hci_acl_t packet;
packet.type = HCI_ACL_DATA_PACKET;
packet.handle = handle | ((PB & 0x03) << 12) | ((BC & 0x03) << 14);
packet.total_length = dlen + 4;
packet.data_length = dlen;
packet.channel = channel;
mw_bt_uart_tx(&packet, sizeof(bt_hci_acl_t));
mw_bt_uart_tx(dat, dlen);
}
void bt_hci_init(void)
{
state = HCI_PACKET_START;
}
void bt_hci_ehcill_wake(void)
{
uint8_t ehcill_p = EHCILL_WAKE_UP_ACK;
debug_uart_tx("HCILL wakeup\n");
P1IE &= ~BT_IO_CTS;
state = HCI_PACKET_START;
BT_IO_POUT &= ~BT_IO_RTS; // drop RTS -> start data
mw_bt_uart_tx(&ehcill_p, 1);
//__delay_cycles(160000);
}