mirror of
https://github.com/bluekitchen/btstack.git
synced 2025-01-06 07:00:59 +00:00
156 lines
6.0 KiB
C
156 lines
6.0 KiB
C
/*
|
|
* Copyright (C) 2014 BlueKitchen GmbH
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the copyright holders nor the names of
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* 4. Any redistribution, use, or modification is done solely for
|
|
* personal benefit and not for any commercial purpose or for
|
|
* monetary gain.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
|
|
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Please inquire about commercial licensing options at
|
|
* contact@bluekitchen-gmbh.com
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* btstack_chipset_csr.c
|
|
*
|
|
* Adapter to use CSR-based chipsets with BTstack
|
|
* SCO over HCI doesn't work over H4 connection and BTM805 module from Microchip Bluetooth Audio Developer Kit (CSR8811)
|
|
*/
|
|
|
|
#include "btstack_chipset_csr.h"
|
|
|
|
#include <stddef.h> /* NULL */
|
|
#include <stdio.h>
|
|
#include <string.h> /* memcpy */
|
|
|
|
#include "btstack_control.h"
|
|
#include "btstack_debug.h"
|
|
#include "btstack_util.h"
|
|
#include "hci_transport.h"
|
|
|
|
// minimal CSR init script to configure PSKEYs and activate them
|
|
static const uint8_t init_script[] = {
|
|
|
|
// Set ANA_Freq to 26MHz
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xfe, 0x01, 0x01, 0x00, 0x00, 0x00, 0x90, 0x65,
|
|
|
|
// Set HCI_NOP_DISABLE
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xf2, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
|
|
#ifdef HAVE_SCO_OVER_HCI
|
|
// Set HOSTIO_MAP_SCO_PCM to 0
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xab, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// Set HOSTIO_MAP_SCO_CODEC to 0
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x03, 0x70, 0x00, 0x00, 0xb0, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// Set ENABLE_SCO_STREAMS to 0
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xc9, 0x22, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
#endif
|
|
|
|
// Set UART baudrate to 115200
|
|
0x01, 0x00, 0xFC, 0x15, 0xc2, 0x02, 0x00, 0x0a, 0x00, 0x02, 0x00, 0x03, 0x70, 0x00, 0x00, 0xea, 0x01, 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0xc2,
|
|
|
|
// WarmReset
|
|
0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x03, 0x0e, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
static const uint16_t init_script_size = sizeof(init_script);
|
|
|
|
//
|
|
static uint32_t init_script_offset = 0;
|
|
static hci_transport_config_uart_t * hci_transport_config_uart = NULL;
|
|
|
|
static void chipset_init(const void * config){
|
|
init_script_offset = 0;
|
|
hci_transport_config_uart = NULL;
|
|
// check for hci_transport_config_uart_t
|
|
if (!config) return;
|
|
if (((hci_transport_config_t*)config)->type != HCI_TRANSPORT_CONFIG_UART) return;
|
|
hci_transport_config_uart = (hci_transport_config_uart_t*) config;
|
|
}
|
|
|
|
// set requested baud rate
|
|
static void update_init_script_command(uint8_t *hci_cmd_buffer){
|
|
uint16_t varid = little_endian_read_16(hci_cmd_buffer, 10);
|
|
if (varid != 0x7003) return;
|
|
uint16_t key = little_endian_read_16(hci_cmd_buffer, 14);
|
|
log_info("csr: pskey 0x%04x", key);
|
|
if (key != 0x01ea) return;
|
|
|
|
// check for baud rate
|
|
if (!hci_transport_config_uart) return;
|
|
uint32_t baudrate = hci_transport_config_uart->baudrate_main;
|
|
if (baudrate == 0){
|
|
baudrate = hci_transport_config_uart->baudrate_init;
|
|
}
|
|
// uint32_t is stored as 2 x uint16_t with most important 16 bits first
|
|
little_endian_store_16(hci_cmd_buffer, 20, baudrate >> 16);
|
|
little_endian_store_16(hci_cmd_buffer, 22, baudrate & 0xffff);
|
|
}
|
|
|
|
static btstack_chipset_result_t chipset_next_command(uint8_t * hci_cmd_buffer){
|
|
|
|
if (init_script_offset >= init_script_size) {
|
|
return BTSTACK_CHIPSET_DONE;
|
|
}
|
|
|
|
// init script is stored with the HCI Command Packet Type
|
|
init_script_offset++;
|
|
// copy command header
|
|
memcpy(&hci_cmd_buffer[0], (uint8_t *) &init_script[init_script_offset], 3);
|
|
init_script_offset += 3;
|
|
int payload_len = hci_cmd_buffer[2];
|
|
// copy command payload
|
|
memcpy(&hci_cmd_buffer[3], (uint8_t *) &init_script[init_script_offset], payload_len);
|
|
|
|
// support for on-the-fly configuration updates
|
|
update_init_script_command(hci_cmd_buffer);
|
|
|
|
init_script_offset += payload_len;
|
|
|
|
// support for warm boot command
|
|
uint16_t varid = little_endian_read_16(hci_cmd_buffer, 10);
|
|
if (varid == 0x4002){
|
|
return BTSTACK_CHIPSET_WARMSTART_REQUIRED;
|
|
}
|
|
|
|
return BTSTACK_CHIPSET_VALID_COMMAND;
|
|
}
|
|
|
|
|
|
static const btstack_chipset_t btstack_chipset_bcm = {
|
|
"CSR",
|
|
chipset_init,
|
|
chipset_next_command,
|
|
NULL, // chipset_set_baudrate_command,
|
|
NULL, // chipset_set_bd_addr_command not supported or implemented
|
|
};
|
|
|
|
// MARK: public API
|
|
const btstack_chipset_t * btstack_chipset_csr_instance(void){
|
|
return &btstack_chipset_bcm;
|
|
}
|