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 MATTHIAS 24 * RINGWALD 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 /* 39 * btstack_chipset_atwilc3000.c 40 * 41 * Adapter to use atwilc3000-based chipsets with BTstack 42 * 43 */ 44 45 #define __BTSTACK_FILE__ "btstack_chipset_atwilc3000.c" 46 47 #include "btstack_config.h" 48 #include "btstack_chipset_atwilc3000.h" 49 #include "btstack_debug.h" 50 51 52 #include <stddef.h> /* NULL */ 53 #include <stdio.h> 54 #include <string.h> /* memcpy */ 55 #include "hci.h" 56 57 #define IRAM_START 0x80000000 58 #define FIRMWARE_CHUNK_SIZE 4096 59 60 // HCI commands 61 static const uint8_t hci_reset_command[] = { 0x01, 0x03, 0x0c, 0x00 }; 62 static const uint8_t hci_read_local_version_information_command[] = { 0x01, 0x01, 0x10, 0x00 }; 63 static const uint8_t hci_vendor_specific_reset_command[] = { 0x01, 0x55, 0xfc, 0x00 }; 64 65 // prototypes 66 static void atwilc3000_w4_command_complete_reset(void); 67 static void atwilc3000_w4_command_complete_read_local_version_information(void); 68 static void atwilc3000_write_memory(void); 69 static void atwilc3000_write_firmware(void); 70 static void atwilc3000_vendor_specific_reset(void); 71 static void atwilc3000_done(void); 72 static void atwilc3000_update_uart_params(void); 73 static void atwilc3000_w4_baudrate_update(void); 74 75 // globals 76 static void (*download_complete)(int result); 77 static const btstack_uart_block_t * the_uart_driver; 78 79 static int download_count; 80 static uint8_t event_buffer[15]; 81 static uint8_t command_buffer[12]; 82 static const uint8_t * fw_data; 83 static uint32_t fw_size; 84 static uint32_t fw_offset; 85 static uint32_t fw_baudrate; 86 87 static void dummy(void){} 88 89 static void atwilc3000_set_baudrate_command(uint32_t baudrate, uint8_t *hci_cmd_buffer){ 90 hci_cmd_buffer[0] = 0x53; 91 hci_cmd_buffer[1] = 0xfc; 92 hci_cmd_buffer[2] = 5; 93 little_endian_store_32(hci_cmd_buffer, 3, fw_baudrate); 94 hci_cmd_buffer[7] = 0; // No flow control 95 } 96 97 #if 0 98 static void atwilc3000_set_bd_addr_command(bd_addr_t addr, uint8_t *hci_cmd_buffer){ 99 hci_cmd_buffer[0] = 0x06; 100 hci_cmd_buffer[1] = 0xFC; 101 hci_cmd_buffer[2] = 0x06; 102 reverse_bd_addr(addr, &hci_cmd_buffer[3]); 103 } 104 #endif 105 106 static void atwilc3000_send_command(const uint8_t * data, uint16_t len){ 107 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, (uint8_t *) &data[1], len - 1); 108 the_uart_driver->send_block(data, len); 109 } 110 111 static void atwilc3000_log_event(void){ 112 int len = event_buffer[2] + 2; 113 hci_dump_packet(HCI_EVENT_PACKET, 1, &event_buffer[1], len); 114 } 115 116 static void atwilc3000_start(void){ 117 // send HCI Reset 118 the_uart_driver->set_block_received(&atwilc3000_w4_command_complete_reset); 119 the_uart_driver->receive_block(&event_buffer[0], 7); 120 atwilc3000_send_command(&hci_reset_command[0], sizeof(hci_reset_command)); 121 log_info("atwilc3000_start: wait for command complete for HCI Reset"); 122 } 123 124 static void atwilc3000_w4_command_complete_reset(void){ 125 atwilc3000_log_event(); 126 log_info("command complete Reset"); 127 // static uint8_t hci_event_command_complete_reset[] = { 0x04, 0x0e, 0x04, 0x01, 0x03, 0x0c, 0x0c }; 128 // TODO: check if correct event 129 130 // send HCI Read Local Version Information 131 the_uart_driver->receive_block(&event_buffer[0], 15); 132 the_uart_driver->set_block_received(&atwilc3000_w4_command_complete_read_local_version_information); 133 atwilc3000_send_command(&hci_read_local_version_information_command[0], sizeof(hci_read_local_version_information_command)); 134 log_info("atwilc3000_start: wait for command complete for HCI Read Local Version Information"); 135 } 136 137 static void atwilc3000_w4_command_complete_read_local_version_information(void){ 138 atwilc3000_log_event(); 139 log_info("command complete Read Local Version Information"); 140 uint8_t firmware_version = event_buffer[7]; 141 log_info("Firmware version 0x%02x", firmware_version); 142 if (firmware_version != 0xff){ 143 log_info("Firmware already loaded, download complete"); 144 download_complete(0); 145 return; 146 } 147 log_info("Running from ROM, start firmware download"); 148 if (fw_baudrate){ 149 atwilc3000_update_uart_params(); 150 } else { 151 atwilc3000_write_memory(); 152 } 153 } 154 155 static void atwilc3000_update_uart_params(void){ 156 command_buffer[0] = 1; 157 atwilc3000_set_baudrate_command(fw_baudrate, &command_buffer[1]); 158 the_uart_driver->receive_block(&event_buffer[0], 7); 159 the_uart_driver->set_block_received(&atwilc3000_w4_baudrate_update); 160 atwilc3000_send_command(&command_buffer[0], 9); 161 } 162 163 static void atwilc3000_w4_baudrate_update(void){ 164 atwilc3000_log_event(); 165 the_uart_driver->set_baudrate(fw_baudrate); 166 atwilc3000_write_memory(); 167 } 168 169 170 static void atwilc3000_write_memory(void){ 171 atwilc3000_log_event(); 172 173 // done? 174 if (fw_offset >= fw_size){ 175 log_info("DONE!!!"); 176 atwilc3000_vendor_specific_reset(); 177 return; 178 } 179 180 // bytes to write 181 log_info("Write pos %u", fw_offset); 182 uint16_t bytes_to_write = btstack_min((fw_size - fw_offset), FIRMWARE_CHUNK_SIZE); 183 // setup write command 184 command_buffer[0] = 1; 185 command_buffer[1] = 0x52; 186 command_buffer[2] = 0xfc; 187 command_buffer[3] = 8; // NOTE: this is in violation of the Bluetooth Specification, but documented in the Atmel-NNNNN-ATWIL_Linux_Porting_Guide 188 little_endian_store_32(command_buffer, 4, IRAM_START + fw_offset); 189 little_endian_store_32(command_buffer, 8, bytes_to_write); 190 191 // send write command - only log write command without the firmware blob 192 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, (uint8_t *) &command_buffer[1], 12 - 1); 193 the_uart_driver->set_block_sent(&atwilc3000_write_firmware); 194 the_uart_driver->send_block(&command_buffer[0], 12); 195 } 196 197 static void atwilc3000_write_firmware(void){ 198 199 the_uart_driver->set_block_received(&atwilc3000_write_memory); 200 the_uart_driver->receive_block(&event_buffer[0], 7); 201 202 uint16_t bytes_to_write = btstack_min((fw_size - fw_offset), FIRMWARE_CHUNK_SIZE); 203 204 uint32_t offset = fw_offset; 205 fw_offset += bytes_to_write; 206 207 the_uart_driver->set_block_sent(&dummy); 208 the_uart_driver->send_block(&fw_data[offset], bytes_to_write); 209 } 210 211 static void atwilc3000_vendor_specific_reset(void){ 212 // send HCI Vendor Specific Reset 213 // the_uart_driver->receive_block(&event_buffer[0], 7); 214 // the_uart_driver->set_block_received(&atwilc3000_done); 215 the_uart_driver->set_block_sent(&atwilc3000_done); 216 atwilc3000_send_command(&hci_vendor_specific_reset_command[0], sizeof(hci_vendor_specific_reset_command)); 217 } 218 219 static void atwilc3000_done(void){ 220 log_info("done"); 221 // reset baud rate 222 if (fw_baudrate){ 223 the_uart_driver->set_baudrate(115200); 224 } 225 download_complete(0); 226 } 227 228 void btstack_chipset_atwilc3000_download_firmware(const btstack_uart_block_t * uart_driver, uint32_t baudrate, const uint8_t * da_fw_data, uint32_t da_fw_size, void (*done)(int result)){ 229 230 the_uart_driver = uart_driver; 231 download_complete = done; 232 fw_data = da_fw_data; 233 fw_size = da_fw_size; 234 fw_offset = 0; 235 fw_baudrate = baudrate; 236 237 int res = the_uart_driver->open(); 238 239 if (res) { 240 log_error("uart_block init failed %u", res); 241 download_complete(res); 242 } 243 244 download_count = 0; 245 atwilc3000_start(); 246 } 247 248 // not used currently 249 250 static const btstack_chipset_t btstack_chipset_atwilc3000 = { 251 "atwilc3000", 252 NULL, // chipset_init not used 253 NULL, // chipset_next_command not used 254 atwilc3000_set_baudrate_command, 255 NULL, // atwilc3000_set_bd_addr_command, 256 }; 257 258 // MARK: public API 259 const btstack_chipset_t * btstack_chipset_atwilc3000_instance(void){ 260 return &btstack_chipset_atwilc3000; 261 } 262 263