1 /* 2 * Copyright (C) 2017 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "btstack_chipset_bcm_download_firmware.c" 39 40 // download firmware implementation 41 // requires hci_dump 42 // supports higher baudrate for patch upload 43 44 #include <string.h> 45 #include <printf.h> 46 #include <unistd.h> 47 48 #include "hci_dump.h" 49 #include "btstack_chipset_bcm.h" 50 #include "btstack_chipset_bcm_download_firmware.h" 51 #include "bluetooth.h" 52 #include "btstack_debug.h" 53 #include "btstack_chipset.h" 54 55 static void bcm_send_hci_baudrate(void); 56 static void bcm_send_next_init_script_command(void); 57 static void bcm_set_local_baudrate(void); 58 static void bcm_w4_command_complete(void); 59 60 static const btstack_uart_block_t * uart_driver; 61 static const btstack_chipset_t * chipset; 62 63 static uint8_t response_buffer[260]; 64 static uint8_t command_buffer[260]; 65 66 static const int hci_command_complete_len = 7; 67 static const uint8_t hci_reset_cmd[] = { 0x03, 0x0c, 0x00 }; 68 // static const uint8_t hci_update_baud_rate[] = { 0x01, 0x18, 0xfc, 0x06, 0x00, 0x00,0x00, 0x00, 0x00, 0x00 }; 69 static void (*download_complete)(int result); 70 static int baudrate; 71 72 static void bcm_send_prepared_command(void){ 73 uart_driver->receive_block(&response_buffer[0], hci_command_complete_len); 74 int size = 1 + 3 + command_buffer[3]; 75 command_buffer[0] = 1; 76 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, &command_buffer[1], size-1); 77 uart_driver->send_block(command_buffer, size); 78 } 79 80 static void bcm_send_hci_reset(void){ 81 log_info("bcm: send HCI Reset"); 82 bool send_baudrate = (baudrate != 0) && (baudrate != 115200); 83 uart_driver->set_block_received(send_baudrate ? &bcm_send_hci_baudrate : &bcm_w4_command_complete); 84 uart_driver->receive_block(&response_buffer[0], hci_command_complete_len); 85 memcpy(&command_buffer[1], hci_reset_cmd, sizeof(hci_reset_cmd)); 86 bcm_send_prepared_command(); 87 } 88 89 static void bcm_send_hci_baudrate(void){ 90 hci_dump_packet(HCI_EVENT_PACKET, 0, &response_buffer[1], hci_command_complete_len-1); 91 chipset->set_baudrate_command(baudrate, &command_buffer[1]); 92 uart_driver->set_block_received(&bcm_set_local_baudrate); 93 uart_driver->receive_block(&response_buffer[0], hci_command_complete_len); 94 log_info("bcm: send baud rate command - %u", baudrate); 95 bcm_send_prepared_command(); 96 } 97 98 static void bcm_set_local_baudrate(void){ 99 hci_dump_packet(HCI_EVENT_PACKET, 0, &response_buffer[1], hci_command_complete_len-1); 100 uart_driver->set_baudrate(baudrate); 101 uart_driver->set_block_received(&bcm_w4_command_complete); 102 bcm_send_next_init_script_command(); 103 } 104 105 static void bcm_w4_command_complete(void){ 106 hci_dump_packet(HCI_EVENT_PACKET, 0, &response_buffer[1], hci_command_complete_len-1); 107 bcm_send_next_init_script_command(); 108 } 109 110 static void bcm_send_next_init_script_command(void){ 111 int res = chipset->next_command(&command_buffer[1]); 112 switch (res){ 113 case BTSTACK_CHIPSET_VALID_COMMAND: 114 bcm_send_prepared_command(); 115 break; 116 case BTSTACK_CHIPSET_DONE: 117 log_info("bcm: init script done"); 118 // disable init script for main startup 119 btstack_chipset_bcm_enable_init_script(0); 120 // reset baudrate to default 121 uart_driver->set_baudrate(115200); 122 // notify main 123 download_complete(0); 124 break; 125 default: 126 break; 127 } 128 } 129 130 /** 131 * @brief Download firmware via uart_driver 132 * @param uart_driver -- already initialized 133 * @param done callback. 0 = Success 134 */ 135 136 void btstack_chipset_bcm_download_firmware_with_uart(const btstack_uart_t * the_uart_driver, int baudrate_upload, void (*done)(int result)){ 137 // 138 uart_driver = the_uart_driver; 139 chipset = btstack_chipset_bcm_instance(); 140 baudrate = baudrate_upload; 141 download_complete = done; 142 btstack_chipset_bcm_enable_init_script(1); 143 144 int res = uart_driver->open(); 145 if (res) { 146 log_error("uart_block init failed %u", res); 147 download_complete(res); 148 return; 149 } 150 151 // Reset with CTS asserted (low) 152 printf("Please reset Bluetooth Controller, e.g. via RESET button. Firmware download starts in:\n"); 153 uint8_t i; 154 for (i = 3; i > 0; i--){ 155 printf("%u\n", i); 156 sleep(1); 157 } 158 printf("Firmware download started\n"); 159 160 bcm_send_hci_reset(); 161 } 162 163 void btstack_chipset_bcm_download_firmware(const btstack_uart_block_t * the_uart_driver, int baudrate_upload, void (*done)(int result)) { 164 btstack_chipset_bcm_download_firmware_with_uart((const btstack_uart_t *) the_uart_driver, baudrate_upload, done); 165 } 166