/* * 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 /* NULL */ #include #include /* 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 ENABLE_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 // Enable RTS/CTS for BCSP (0806 -> 080e) 0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xbf, 0x01, 0x01, 0x00, 0x00, 0x00, 0x0e, 0x08, // Enable RTS/CTS for H5 (1806 -> 180e, even parity still on) 0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x01, 0x00, 0x03, 0x70, 0x00, 0x00, 0xc1, 0x01, 0x01, 0x00, 0x00, 0x00, 0x0e, 0x18, // 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; }