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https://github.com/bluekitchen/btstack.git
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142 lines
4.8 KiB
C
142 lines
4.8 KiB
C
/*
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* Copyright (C) 2009-2012 by Matthias Ringwald
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at btstack@ringwald.ch
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*
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*/
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/*
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* bt_control_csr.c
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*
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* Adapter to use CSR-based chipsets with BTstack
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*
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*/
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#include "bt_control_csr.h"
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#include <stddef.h> /* NULL */
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#include <stdio.h>
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#include <string.h> /* memcpy */
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#include "bt_control.h"
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// minimal CSR init script
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static const uint8_t init_script[] = {
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// BCCMD set ANA_Freq PSKEY to 26MHz
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0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x1e, 0x00, 0x03, 0x70, 0x00, 0x00, 0xfe, 0x01, 0x01, 0x00, 0x00, 0x00, 0x90, 0x65,
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// BCCMD WarmReset
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0x01, 0x00, 0xFC, 0x13, 0xc2, 0x02, 0x00, 0x09, 0x00, 0x4d, 0x0e, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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static const uint16_t init_script_size = sizeof(init_script);
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//
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static uint32_t init_script_offset = 0;
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static int16_t init_power_in_dB = 13; // 13 dBm
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static int bt_control_csr_on(void *config){
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init_script_offset = 0;
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return 0;
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}
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// UART Baud Rate control from: http://e2e.ti.com/support/low_power_rf/f/660/p/134850/484763.aspx
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// static int csr_baudrate_cmd(void * config, uint32_t baudrate, uint8_t *hci_cmd_buffer){
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// hci_cmd_buffer[0] = 0x36;
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// hci_cmd_buffer[1] = 0xFF;
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// hci_cmd_buffer[2] = 0x04;
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// hci_cmd_buffer[3] = baudrate & 0xff;
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// hci_cmd_buffer[4] = (baudrate >> 8) & 0xff;
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// hci_cmd_buffer[5] = (baudrate >> 16) & 0xff;
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// hci_cmd_buffer[6] = 0;
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// return 0;
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// }
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static void bt_control_csr_update_command(uint8_t *hci_cmd_buffer){
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}
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static int bt_control_csr_next_cmd(void *config, uint8_t *hci_cmd_buffer){
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if (init_script_offset >= init_script_size) {
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return 0;
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}
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// init script is stored with the HCI Command Packet Type
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init_script_offset++;
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// copy command header
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memcpy(&hci_cmd_buffer[0], (uint8_t *) &init_script[init_script_offset], 3);
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init_script_offset += 3;
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int payload_len = hci_cmd_buffer[2];
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// copy command payload
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memcpy(&hci_cmd_buffer[3], (uint8_t *) &init_script[init_script_offset], payload_len);
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// support for on-the-fly configuration updates
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bt_control_csr_update_command(hci_cmd_buffer);
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init_script_offset += payload_len;
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return 1;
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}
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// MARK: const structs
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static const bt_control_t bt_control_csr = {
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bt_control_csr_on, // on
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NULL, // off
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NULL, // sleep
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NULL, // wake
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NULL, // valid
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NULL, // name
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NULL, /* csr_baudrate_cmd, */ // baudrate_cmd
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bt_control_csr_next_cmd, // next_cmd
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NULL, // register_for_power_notifications
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NULL, // hw_error
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};
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static const hci_uart_config_t hci_uart_config_csr = {
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NULL,
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115200,
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0, // 1000000,
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0
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};
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// MARK: public API
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void bt_control_csr_set_power(int16_t power_in_dB){
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init_power_in_dB = power_in_dB;
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}
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bt_control_t *bt_control_csr_instance(void){
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return (bt_control_t*) &bt_control_csr;
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}
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hci_uart_config_t *hci_uart_config_csr_instance(void){
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return (hci_uart_config_t*) &hci_uart_config_csr;
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}
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