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370 changes: 370 additions & 0 deletions features/FEATURE_BLE/targets/TARGET_CORDIO_ODIN_W2/HCIDriver.cpp
Original file line number Diff line number Diff line change
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/*
* Copyright (c) 2018 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#include "CordioBLE.h"
#include "CordioHCIDriver.h"
#include "hci_defs.h"
#include "hci_api.h"
#include "hci_cmd.h"
#include "hci_core.h"
#include "bstream.h"
#include "wsf_buf.h"
#include <stdbool.h>
#include "hci_mbed_os_adaptation.h"
#include "H4TransportDriver.h"
#include "OdinCordioInterface.h"

namespace ble {
namespace vendor {
namespace odin_w2 {

class HCIDriver : public cordio::CordioHCIDriver {

public:
HCIDriver(cordio::CordioHCITransportDriver& transport_driver, PinName shutdown_name, PinName hci_rts_name) :
cordio::CordioHCIDriver(transport_driver),
shutdown(shutdown_name, 0),
hci_rts(hci_rts_name, 0),
service_pack_index(0),
service_pack_transfered(false) {
};

virtual void do_initialize();

virtual void do_terminate();

virtual void start_reset_sequence();

virtual void handle_reset_sequence(uint8_t *pMsg);

private:
void start_service_pack_transfert(void) {
service_pack_index = 0;
service_pack_transfered = false;
send_service_pack_command();
}

void send_service_pack_command(void) {
uint16_t cmd_len = OdinServicePack[service_pack_index + HCI_CMD_HDR_LEN];
cmd_opcode_ack_expected = (OdinServicePack[service_pack_index + 2] << 8) | OdinServicePack[service_pack_index + 1];
uint8_t *pBuf = hciCmdAlloc(cmd_opcode_ack_expected, cmd_len);
if (pBuf) {
memcpy(pBuf, OdinServicePack + service_pack_index + 1, cmd_len + HCI_CMD_HDR_LEN);
hciCmdSend(pBuf);
}
else {
printf("Error cannot allocate memory for the buffer");
}
}

void ack_service_pack_command(uint16_t opcode, uint8_t* msg) {
/* check if response opcode is same as expected command opcode */
MBED_ASSERT (cmd_opcode_ack_expected == opcode);

// update service pack index
service_pack_index += (1 + HCI_CMD_HDR_LEN + OdinServicePack[service_pack_index + HCI_CMD_HDR_LEN]);

if (service_pack_index < service_pack_size) {
send_service_pack_command();
}
else if (opcode == HCID_VS_WRITE_BD_ADDR) {
/* send an HCI Reset command to start the sequence */
HciResetCmd();
service_pack_transfered = true;
}
else {
/* send BT device hardware address write command */
send_hci_vs_cmd(HCID_VS_WRITE_BD_ADDR);
cmd_opcode_ack_expected = HCID_VS_WRITE_BD_ADDR;
}
}

void hciCoreReadResolvingListSize(void)
{
/* if LL Privacy is supported by Controller and included */
if ((hciCoreCb.leSupFeat & HCI_LE_SUP_FEAT_PRIVACY) &&
(hciLeSupFeatCfg & HCI_LE_SUP_FEAT_PRIVACY))
{
/* send next command in sequence */
HciLeReadResolvingListSize();
}
else
{
hciCoreCb.resListSize = 0;

/* send next command in sequence */
hciCoreReadMaxDataLen();
}
}

void hciCoreReadMaxDataLen(void)
{
/* if LE Data Packet Length Extensions is supported by Controller and included */
if ((hciCoreCb.leSupFeat & HCI_LE_SUP_FEAT_DATA_LEN_EXT) &&
(hciLeSupFeatCfg & HCI_LE_SUP_FEAT_DATA_LEN_EXT))
{
/* send next command in sequence */
HciLeReadMaxDataLen();
}
else
{
/* send next command in sequence */
HciLeRandCmd();
}
}

DigitalOut shutdown; // power/shutdown pin for bt device
DigitalOut hci_rts; // request to sent pin
size_t service_pack_index; // Index of command to be recently sent over hci
bool service_pack_transfered; // Flag to notify if service pack is completely transferred or not
uint16_t cmd_opcode_ack_expected; // Command against which acknowledgment is expected
uint32_t service_pack_size; // size of service pack
char* OdinServicePack ;
vs_cmd_send_t send_hci_vs_cmd ;

};

} // namespace odin_w2
} // namespace vendor
} // namespace ble

void ble::vendor::odin_w2::HCIDriver::do_initialize()
{
cordio_callback_s callback;

hci_rts = 1; // Flow Control is OFF

shutdown = 0; // BT Power is OFF
wait_ms(20);
shutdown = 1; // BT Power is ON
wait_ms(500);

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why such a long wait?

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This is according to requirement of device power cycle

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But i thing BLE power up time is quite satisfactory now, isn't it?


hci_rts = 0; // Flow Control is ON

/* ODIN ble driver initialization function */
cbCordio_Btinit(&callback);

OdinServicePack = callback.Service_pack;
send_hci_vs_cmd = callback.vs_command_callback;
service_pack_size = callback.service_pack_size;
}

void ble::vendor::odin_w2::HCIDriver::do_terminate()
{
// TODO: ASRI

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left over todo, implement or remove and track in jira

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that's oudated it is removed in latest commit

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actually we have not found any method in Cordio Transport driver which should update HCI baudrate at run time if needed, it assumes baudrate being set at initialization never changes so it was just done in that perspective e.g if we really need to change baudrate first we would terminate current session of HCI and then update baudrate and re-open it but it is not required so I removed TODO in last commit, hope it have clear idea?

}

void ble::vendor::odin_w2::HCIDriver::start_reset_sequence()
{
/* Update baudrate of BT to speed up setup time */
send_hci_vs_cmd(HCID_VS_UPDATE_UART_BAUD_RATE);

}

void ble::vendor::odin_w2::HCIDriver::handle_reset_sequence(uint8_t *pMsg)
{
uint16_t opcode;
static uint8_t randCnt;

/* if event is a command complete event */
if (*pMsg == HCI_CMD_CMPL_EVT)
{
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should this file follow our coding style?

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@aqib-ublox aqib-ublox Oct 18, 2018

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@0xc0170 u r talking about putting baces on same line like:
if( xx ) {

}

I have tried following standard for var and functions naming etc. let me give second look to it .

/* parse parameters */
pMsg += HCI_EVT_HDR_LEN;
pMsg++; /* skip num packets */
BSTREAM_TO_UINT16(opcode, pMsg);
pMsg++; /* skip status */

if (opcode == HCID_VS_UPDATE_UART_BAUD_RATE)
{
update_uart_baud_rate();
start_service_pack_transfert();
return;
}

if (service_pack_transfered == false) {
ack_service_pack_command(opcode, pMsg);
return;
}

/* decode opcode */
switch (opcode) {

case HCI_OPCODE_RESET:
/* Send (fast and slow) clock configuration command */
send_hci_vs_cmd(HCID_VS_FAST_CLOCK_CONFIG_BTIP);
break;

case HCID_VS_FAST_CLOCK_CONFIG_BTIP:
/* Send deep-sleep behavior control command (setting retransmission, inactivity and rts pulse width for Bt) */
send_hci_vs_cmd(HCID_VS_HCILL_PARS_CFG);
break;

case HCID_VS_HCILL_PARS_CFG:
/* Send sleep mode configuration command */
send_hci_vs_cmd(HCID_VS_SLEEP_PROTOCOLS_CFG);
break;

case HCID_VS_SLEEP_PROTOCOLS_CFG:
/* initialize rand command count */
randCnt = 0;

/* send next command in sequence */
HciSetEventMaskCmd((uint8_t *)hciEventMask);
break;

case HCI_OPCODE_SET_EVENT_MASK:
/* send next command in sequence */
HciLeSetEventMaskCmd((uint8_t *)hciLeEventMask);
break;

case HCI_OPCODE_LE_SET_EVENT_MASK:
/* send next command in sequence */
HciSetEventMaskPage2Cmd((uint8_t *)hciEventMaskPage2);
break;

case HCI_OPCODE_SET_EVENT_MASK_PAGE2:
/* send next command in sequence */
HciReadBdAddrCmd();
break;

case HCI_OPCODE_READ_BD_ADDR:
/* parse and store event parameters */
BdaCpy(hciCoreCb.bdAddr, pMsg);

/* send next command in sequence */
HciLeReadBufSizeCmd();
break;

case HCI_OPCODE_LE_READ_BUF_SIZE:
/* parse and store event parameters */
BSTREAM_TO_UINT16(hciCoreCb.bufSize, pMsg);
BSTREAM_TO_UINT8(hciCoreCb.numBufs, pMsg);

/* initialize ACL buffer accounting */
hciCoreCb.availBufs = hciCoreCb.numBufs;

/* send next command in sequence */
HciLeReadSupStatesCmd();
break;

case HCI_OPCODE_LE_READ_SUP_STATES:
/* parse and store event parameters */
memcpy(hciCoreCb.leStates, pMsg, HCI_LE_STATES_LEN);

/* send next command in sequence */
HciLeReadWhiteListSizeCmd();
break;

case HCI_OPCODE_LE_READ_WHITE_LIST_SIZE:
/* parse and store event parameters */
BSTREAM_TO_UINT8(hciCoreCb.whiteListSize, pMsg);

/* send next command in sequence */
HciLeReadLocalSupFeatCmd();
break;

case HCI_OPCODE_LE_READ_LOCAL_SUP_FEAT:
/* parse and store event parameters */
BSTREAM_TO_UINT16(hciCoreCb.leSupFeat, pMsg);

/* send next command in sequence */
hciCoreReadResolvingListSize();
break;

case HCI_OPCODE_LE_READ_RES_LIST_SIZE:
/* parse and store event parameters */
BSTREAM_TO_UINT8(hciCoreCb.resListSize, pMsg);

/* send next command in sequence */
hciCoreReadMaxDataLen();
break;

case HCI_OPCODE_LE_READ_MAX_DATA_LEN:
{
uint16_t maxTxOctets;
uint16_t maxTxTime;

BSTREAM_TO_UINT16(maxTxOctets, pMsg);
BSTREAM_TO_UINT16(maxTxTime, pMsg);

/* use Controller's maximum supported payload octets and packet duration times
* for transmission as Host's suggested values for maximum transmission number
* of payload octets and maximum packet transmission time for new connections.
*/
HciLeWriteDefDataLen(maxTxOctets, maxTxTime);
}
break;

case HCI_OPCODE_LE_WRITE_DEF_DATA_LEN:
if (hciCoreCb.extResetSeq)
{
/* send first extended command */
(*hciCoreCb.extResetSeq)(pMsg, opcode);
}
else
{
/* initialize extended parameters */
hciCoreCb.maxAdvDataLen = 0;
hciCoreCb.numSupAdvSets = 0;
hciCoreCb.perAdvListSize = 0;

/* send next command in sequence */
HciLeRandCmd();
}
break;

case HCI_OPCODE_LE_READ_MAX_ADV_DATA_LEN:
case HCI_OPCODE_LE_READ_NUM_SUP_ADV_SETS:
case HCI_OPCODE_LE_READ_PER_ADV_LIST_SIZE:
if (hciCoreCb.extResetSeq)
{
/* send next extended command in sequence */
(*hciCoreCb.extResetSeq)(pMsg, opcode);
}
break;

case HCI_OPCODE_LE_RAND:
/* check if need to send second rand command */
if (randCnt < (HCI_RESET_RAND_CNT - 1))
{
randCnt++;
HciLeRandCmd();
}
else
{
signal_reset_sequence_done();
}
break;

default:
break;
}
}
}

ble::vendor::cordio::CordioHCIDriver& ble_cordio_get_hci_driver() {
static ble::vendor::cordio::H4TransportDriver transport_driver (/* cbCFG_PIO_PIN_BT_HCI_TX */ PG_14,
/* cbCFG_PIO_PIN_BT_HCI_RX */ PC_7,
/* cbCFG_PIO_PIN_BT_HCI_CTS */ PG_15,
/* cbCFG_PIO_PIN_BT_HCI_RTS */ PG_12,
115200);
static ble::vendor::odin_w2::HCIDriver hci_driver ( transport_driver,
/* cbCFG_PIO_PIN_BT_ENABLE */ PG_7,
/* cbCFG_PIO_PIN_BT_HCI_RTS */ PG_12);

return hci_driver;
}
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