|
| 1 | +/* |
| 2 | + This file is part of the ArduinoBLE library. |
| 3 | + Copyright (c) 2018-2025 Arduino SA. All rights reserved. |
| 4 | + |
| 5 | + This library is free software; you can redistribute it and/or |
| 6 | + modify it under the terms of the GNU Lesser General Public |
| 7 | + License as published by the Free Software Foundation; either |
| 8 | + version 2.1 of the License, or (at your option) any later version. |
| 9 | + |
| 10 | + This library is distributed in the hope that it will be useful, |
| 11 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | + Lesser General Public License for more details. |
| 14 | + |
| 15 | + You should have received a copy of the GNU Lesser General Public |
| 16 | + License along with this library; if not, write to the Free Software |
| 17 | + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | +*/ |
| 19 | + |
| 20 | +#if defined(__ZEPHYR__) |
| 21 | + |
| 22 | +#include "HCIVirtualTransportZephyr.h" |
| 23 | +#include "HCI.h" |
| 24 | + |
| 25 | +#include <zephyr/bluetooth/buf.h> |
| 26 | +#include <zephyr/bluetooth/hci.h> |
| 27 | +#include <zephyr/bluetooth/hci_raw.h> |
| 28 | +#include <zephyr/bluetooth/controller.h> |
| 29 | +#include <zephyr/drivers/uart.h> |
| 30 | +#include <zephyr/drivers/hwinfo.h> |
| 31 | + |
| 32 | +static K_FIFO_DEFINE(rx_queue); |
| 33 | +struct k_fifo* __rx_queue = &rx_queue; |
| 34 | +extern "C" int bt_h4_vnd_setup(const struct device *dev); |
| 35 | + |
| 36 | +#if CONFIG_CYW4343W_MURATA_1DX |
| 37 | +// External firmware defines. |
| 38 | +extern const uint8_t brcm_patchram_buf[]; |
| 39 | +extern const int brcm_patch_ram_length; |
| 40 | + |
| 41 | +enum { |
| 42 | + HCI_VND_OP_FW_DOWNLOAD = 0xFC2E, |
| 43 | + HCI_VND_OP_WRITE_RAM = 0xFC4C, |
| 44 | + HCI_VND_OP_LAUNCH_RAM = 0xFC4E, |
| 45 | + HCI_VND_OP_SET_BAUDRATE = 0xFC18, |
| 46 | +}; |
| 47 | + |
| 48 | +static int cyw4343_set_baudrate(const struct device *uart, uint32_t baudrate) { |
| 49 | + struct __attribute__ ((packed)) { |
| 50 | + uint16_t zero; |
| 51 | + uint32_t baud; |
| 52 | + } param = { 0, baudrate }; |
| 53 | + |
| 54 | + struct uart_config uart_cfg; |
| 55 | + if (uart_config_get(uart, &uart_cfg)) { |
| 56 | + return -1; |
| 57 | + } |
| 58 | + |
| 59 | + if (HCI.sendCommand(HCI_VND_OP_SET_BAUDRATE, sizeof(param), (void *) ¶m)) { |
| 60 | + return -1; |
| 61 | + } |
| 62 | + |
| 63 | + uart_cfg.baudrate = baudrate; |
| 64 | + if (uart_configure(uart, &uart_cfg)) { |
| 65 | + return -1; |
| 66 | + } |
| 67 | + |
| 68 | + uart_irq_rx_enable(uart); |
| 69 | + return 0; |
| 70 | +} |
| 71 | + |
| 72 | +static int cyw4343_download_firmware(const struct device *uart) { |
| 73 | + #define MURATA_NODE DT_CHILD(DT_CHOSEN(zephyr_bt_hci), murata_1dx) |
| 74 | + uint32_t operational_speed = DT_PROP_OR(MURATA_NODE, hci_operation_speed, 115200); |
| 75 | + uint32_t fw_download_speed = DT_PROP_OR(MURATA_NODE, fw_download_speed, 115200); |
| 76 | + |
| 77 | + // Reset controller |
| 78 | + if (HCI.sendCommand(0x0C03, 0, NULL)) { |
| 79 | + return -1; |
| 80 | + } |
| 81 | + |
| 82 | + // Switch to fast baudrate |
| 83 | + if ((operational_speed != fw_download_speed) && |
| 84 | + cyw4343_set_baudrate(uart, fw_download_speed)) { |
| 85 | + return -1; |
| 86 | + } |
| 87 | + |
| 88 | + // Start firmware downloader. |
| 89 | + if (HCI.sendCommand(HCI_VND_OP_FW_DOWNLOAD, 0, NULL)) { |
| 90 | + return -1; |
| 91 | + } |
| 92 | + |
| 93 | + // Load the firmware image. |
| 94 | + for (size_t offset=0; offset < brcm_patch_ram_length;) { |
| 95 | + uint8_t length = brcm_patchram_buf[offset + 2]; |
| 96 | + uint16_t opcode = (brcm_patchram_buf[offset + 0]) | |
| 97 | + (brcm_patchram_buf[offset + 1] << 8); |
| 98 | + |
| 99 | + // Opcode should be write RAM or launch RAM. |
| 100 | + if (opcode != HCI_VND_OP_WRITE_RAM && opcode != HCI_VND_OP_LAUNCH_RAM) { |
| 101 | + return -1; |
| 102 | + } |
| 103 | + |
| 104 | + if (HCI.sendCommand(opcode, length, (void *) &brcm_patchram_buf[offset + 3])) { |
| 105 | + return -1; |
| 106 | + } |
| 107 | + |
| 108 | + offset += length + 3; |
| 109 | + } |
| 110 | + |
| 111 | + // Delay after firmware loading. |
| 112 | + delay(250); |
| 113 | + |
| 114 | + // Switch back to the default baudrate. |
| 115 | + if ((operational_speed != fw_download_speed) && |
| 116 | + cyw4343_set_baudrate(uart, operational_speed)) { |
| 117 | + return -1; |
| 118 | + } |
| 119 | + |
| 120 | + return 0; |
| 121 | +} |
| 122 | +#endif |
| 123 | + |
| 124 | +HCIVirtualTransportZephyrClass::HCIVirtualTransportZephyrClass() { |
| 125 | + |
| 126 | +} |
| 127 | + |
| 128 | +HCIVirtualTransportZephyrClass::~HCIVirtualTransportZephyrClass() { |
| 129 | + |
| 130 | +} |
| 131 | + |
| 132 | +int HCIVirtualTransportZephyrClass::begin() { |
| 133 | + bt_enable_raw(__rx_queue); |
| 134 | + |
| 135 | +#if CONFIG_BT_HCI_SETUP |
| 136 | + const struct device *uart = DEVICE_DT_GET(DT_PARENT(DT_CHOSEN(zephyr_bt_hci))); |
| 137 | + if (!uart) { |
| 138 | + return 0; |
| 139 | + } |
| 140 | + |
| 141 | + if (bt_h4_vnd_setup(uart)) { |
| 142 | + return 0; |
| 143 | + } |
| 144 | + |
| 145 | +#if CONFIG_CYW4343W_MURATA_1DX |
| 146 | + if (cyw4343_download_firmware(uart)) { |
| 147 | + return 0; |
| 148 | + } |
| 149 | +#endif /* CONFIG_CYW4343W_MURATA_1DX */ |
| 150 | +#endif /* CONFIG_BT_HCI_SETUP */ |
| 151 | + |
| 152 | +#if CONFIG_BT_LL_SW_SPLIT |
| 153 | + // Use unique device id for BD addr. |
| 154 | + uint8_t bd_addr[6] = { 0xFA, 0xFA, 0xFA, 0xFA, 0xFA, 0xFA }; |
| 155 | + |
| 156 | +#if CONFIG_HWINFO |
| 157 | + hwinfo_get_device_id(bd_addr, sizeof(bd_addr)); |
| 158 | +#endif /* CONFIG_HWINFO */ |
| 159 | + |
| 160 | + // Set public address for controller. |
| 161 | + bt_ctlr_set_public_addr(bd_addr); |
| 162 | +#endif /* CONFIG_BT_LL_SW_SPLIT */ |
| 163 | + |
| 164 | + rxbuf.clear(); |
| 165 | + |
| 166 | + return 1; |
| 167 | +} |
| 168 | + |
| 169 | +void HCIVirtualTransportZephyrClass::end() { |
| 170 | + |
| 171 | +} |
| 172 | + |
| 173 | +void HCIVirtualTransportZephyrClass::wait(unsigned long timeout) { |
| 174 | + delay(timeout); |
| 175 | +} |
| 176 | + |
| 177 | +int HCIVirtualTransportZephyrClass::available() { |
| 178 | + static struct net_buf *buf = NULL; |
| 179 | + |
| 180 | + if (rxbuf.available()) { |
| 181 | + return rxbuf.available(); |
| 182 | + } |
| 183 | + |
| 184 | + buf = (struct net_buf *) k_fifo_get(__rx_queue, K_MSEC(10)); |
| 185 | + if (!buf) { |
| 186 | + return 0; |
| 187 | + } |
| 188 | + |
| 189 | + for (int i=0; i<buf->len; i++) { |
| 190 | + rxbuf.store_char((uint8_t)buf->data[i]); |
| 191 | + } |
| 192 | + |
| 193 | + net_buf_pull(buf, buf->len); |
| 194 | + if (!buf->len) { |
| 195 | + net_buf_unref(buf); |
| 196 | + buf = NULL; |
| 197 | + } |
| 198 | + |
| 199 | + return rxbuf.available(); |
| 200 | +} |
| 201 | + |
| 202 | +int HCIVirtualTransportZephyrClass::peek() { |
| 203 | + return -1; |
| 204 | +} |
| 205 | + |
| 206 | +int HCIVirtualTransportZephyrClass::read() { |
| 207 | + if (rxbuf.available()) { |
| 208 | + return rxbuf.read_char(); |
| 209 | + } |
| 210 | + |
| 211 | + return -1; |
| 212 | +} |
| 213 | + |
| 214 | +size_t HCIVirtualTransportZephyrClass::write(const uint8_t* data, size_t length) { |
| 215 | + enum bt_buf_type type = bt_buf_type_from_h4(data[0], BT_BUF_OUT); |
| 216 | + struct net_buf *buf = bt_buf_get_tx(type, K_FOREVER, &data[1], length - 1); |
| 217 | + |
| 218 | + if (buf) { |
| 219 | + auto err = bt_send(buf); |
| 220 | + if (err) { |
| 221 | + net_buf_unref(buf); |
| 222 | + } |
| 223 | + return length; |
| 224 | + } |
| 225 | + return 0; |
| 226 | +} |
| 227 | + |
| 228 | +HCIVirtualTransportZephyrClass HCIVirtualTransportZephyr; |
| 229 | +HCITransportInterface& HCITransport = HCIVirtualTransportZephyr; |
| 230 | +#endif |
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