| README.md (d00ab9e3a0094f929407efbf0610465286ad22de) | README.md (1c5cf6a0cdb1813d901b3f6ffbaa2d4c3297b19c) |
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| 1# 2 3In this chapter, we first explain how Bluetooth chipsets are connected physically and then provide information about popular Bluetooth chipset and their use with BTstack. 4 5## HCI Interface 6 7The communication between a Host (a computer or an MCU) and a Host Controller (the actual Bluetooth chipset) follows the Host Controller Interface (HCI), see {@fig:HostChipsetConnection}. HCI defines how commands, events, asynchronous and synchronous data packets are exchanged. Asynchronous packets (ACL) are used for data transfer, while synchronous packets (SCO) are used for Voice with the Headset and the Hands-Free Profiles. 8 --- 50 unchanged lines hidden (view full) --- 59Broadcom UART | Dual mode | H4, H5 | Rarely | Partially (2) | No | Maybe (3) | 43438: Yes | | bcm | Max UART baudrate 2 mbps 60Broadcom USB Dongles | Dual mode | USB | Yes | Yes | No | No | BCM20702: No | | bcm | 61CSR UART | Dual mode | H4, H5, BCSP | Rarely | Partially (2) | No | No | CSR8811: No | | csr | 62CSR USB Dongles | Dual mode | USB | Mostly | Yes | No | No | CSR8510: No | | csr | 63Cypress CYW20704/7 | Dual mode | H4, H5, USB | Don't know | Partially (2) | Yes | Yes | Yes | Yes | bcm | 64Cypress CYW20819 | Dual mode | H4, H5, USB | Don't know | Partially (2) | Yes | Yes | Yes | Don't know | bcm | Keep CTS high during power cycle 65Cypress CYW43xxx | Dual mode + Wifi | H4, H5 | Don't know | Partially (2) | Don't know | No | Don't know | Don't know | bcm | Bluetooth + Wifi Combo Controller 66Cypress PSoC 4 | LE | H4 | Don't know | n.a. | Yes | Don't know | n.a. | Don't know | | HCI Firmware part of PSoC Creator kits examples | 1# 2 3In this chapter, we first explain how Bluetooth chipsets are connected physically and then provide information about popular Bluetooth chipset and their use with BTstack. 4 5## HCI Interface 6 7The communication between a Host (a computer or an MCU) and a Host Controller (the actual Bluetooth chipset) follows the Host Controller Interface (HCI), see {@fig:HostChipsetConnection}. HCI defines how commands, events, asynchronous and synchronous data packets are exchanged. Asynchronous packets (ACL) are used for data transfer, while synchronous packets (SCO) are used for Voice with the Headset and the Hands-Free Profiles. 8 --- 50 unchanged lines hidden (view full) --- 59Broadcom UART | Dual mode | H4, H5 | Rarely | Partially (2) | No | Maybe (3) | 43438: Yes | | bcm | Max UART baudrate 2 mbps 60Broadcom USB Dongles | Dual mode | USB | Yes | Yes | No | No | BCM20702: No | | bcm | 61CSR UART | Dual mode | H4, H5, BCSP | Rarely | Partially (2) | No | No | CSR8811: No | | csr | 62CSR USB Dongles | Dual mode | USB | Mostly | Yes | No | No | CSR8510: No | | csr | 63Cypress CYW20704/7 | Dual mode | H4, H5, USB | Don't know | Partially (2) | Yes | Yes | Yes | Yes | bcm | 64Cypress CYW20819 | Dual mode | H4, H5, USB | Don't know | Partially (2) | Yes | Yes | Yes | Don't know | bcm | Keep CTS high during power cycle 65Cypress CYW43xxx | Dual mode + Wifi | H4, H5 | Don't know | Partially (2) | Don't know | No | Don't know | Don't know | bcm | Bluetooth + Wifi Combo Controller 66Cypress PSoC 4 | LE | H4 | Don't know | n.a. | Yes | Don't know | n.a. | Don't know | | HCI Firmware part of PSoC Creator kits examples |
| 67Dialog DA14531 | LE | H4 | No | n.a. | Yes | Yes | n.a. | Don't know | da145xx | Official HCI firmware included in BTstack |
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| 67Dialog DA14581 | LE | H4, SPI | No | n.a. | No | No | n.a. | Don't know | da145xx | Official HCI firmware included in BTstack 68Dialog DA14585 | LE | H4, SPI | No | n.a. | Yes | Yes | n.a. | Yes | da145xx | Official HCI firmware included in BTstack 69Dialog DA1469x | LE | H4, SPI | No | n.a. | Yes | Yes | n.a. | Yes | da145xx | HCI Firmware part of DA1469x SDK 70Espressif ESP32 | Dual mode + Wifi | VHCI | Yes | Yes | Yes | Yes | Yes | Don't know | | SoC with Bluetooth and Wifi 71EM 9301 | LE | SPI, H4 | No | n.a. | No | No | n.a. | Don't know | em9301 | Custom HCI SPI implementation 72EM 9304 | LE | SPI, H4 | Yes | n.a. | Yes | Yes | n.a. | Don't know | em9301 | Custom HCI SPI implementation 73Intel Dual Wireless 3165, 8260, 8265 | Dual mode | USB | Yes | Probably | Don't know | Don't know | Don't know | Don't know | intel | Firmware size: 400 kB 74Nordic nRF | LE | H4 | Fixed Random | n.a. | Yes | Yes | n.a. | Yes | | Requires HCI firmware --- 76 unchanged lines hidden (view full) --- 151 152**BTstack integration**: The common code for all Broadcom chipsets is provided by *btstack_chipset_csr.c*. During the setup, *btstack_chipset_csr_instance* function is used to get a *btstack_chipset_t* instance and passed to *hci_init* function. The baud rate is set during the general configuration. 153 154SCO Data is routed over HCI for USB dongles, but not for UART connections. HSP and HFP Narrow Band Speech is supported via I2C/PCM pins. 155 156 157## Dialog Semiconductor 158 | 68Dialog DA14581 | LE | H4, SPI | No | n.a. | No | No | n.a. | Don't know | da145xx | Official HCI firmware included in BTstack 69Dialog DA14585 | LE | H4, SPI | No | n.a. | Yes | Yes | n.a. | Yes | da145xx | Official HCI firmware included in BTstack 70Dialog DA1469x | LE | H4, SPI | No | n.a. | Yes | Yes | n.a. | Yes | da145xx | HCI Firmware part of DA1469x SDK 71Espressif ESP32 | Dual mode + Wifi | VHCI | Yes | Yes | Yes | Yes | Yes | Don't know | | SoC with Bluetooth and Wifi 72EM 9301 | LE | SPI, H4 | No | n.a. | No | No | n.a. | Don't know | em9301 | Custom HCI SPI implementation 73EM 9304 | LE | SPI, H4 | Yes | n.a. | Yes | Yes | n.a. | Don't know | em9301 | Custom HCI SPI implementation 74Intel Dual Wireless 3165, 8260, 8265 | Dual mode | USB | Yes | Probably | Don't know | Don't know | Don't know | Don't know | intel | Firmware size: 400 kB 75Nordic nRF | LE | H4 | Fixed Random | n.a. | Yes | Yes | n.a. | Yes | | Requires HCI firmware --- 76 unchanged lines hidden (view full) --- 152 153**BTstack integration**: The common code for all Broadcom chipsets is provided by *btstack_chipset_csr.c*. During the setup, *btstack_chipset_csr_instance* function is used to get a *btstack_chipset_t* instance and passed to *hci_init* function. The baud rate is set during the general configuration. 154 155SCO Data is routed over HCI for USB dongles, but not for UART connections. HSP and HFP Narrow Band Speech is supported via I2C/PCM pins. 156 157 158## Dialog Semiconductor 159 |
| 159Dialog Semiconductor offers the DA14581, an LE-only SoC that can be programmed with an HCI firmware. The HCI firmware can be uploaded on boot into SRAM or stored in the OTP (One-time programmable) memory, or in an external SPI. | 160Dialog Semiconductor offers the DA145xx series of LE-only SoCs that can be programmed with an HCI firmware. 161The HCI firmware can be uploaded on boot into SRAM or stored in the OTP (One-time programmable) memory, or in an external SPI. |
| 160 | 162 |
| 161It does not implement the Data Length Extension or supports multiple concurrent roles. | 163The 581 does not implement the Data Length Extension or supports multiple concurrent roles, while later versions support it. |
| 162 | 164 |
| 163The DA14585 uses the same firmware upload mechanism as the 581 model. In addition, it supports both Data Length Extension as well as multiple concurrent roles. | 165The mechanism to boot a firmware via UART/SPI has mostly stayed the same, while the set of supported interfaces and baudrates have slightly changed. |
| 164 | 166 |
| 165The newer DA1469x uses an external flash. The DA 1469x SDK contains a HCI firmware that can be compiled and downloaded into flash using the SmartSnippets Studio. | 167The DA1469x uses an external flash. The DA 1469x SDK contains a HCI firmware that can be compiled and downloaded into flash using the SmartSnippets Studio. |
| 166 167**BD Addr** fixed to 80:EA:CA:00:00:01. No command in HCI firmware to set it differently. Random addresses could be used instead. 168 169**Baud rate**: The baud rate is fixed at 115200 with the provided firmware. A higher baud rate could be achieved by re-compiling the HCI firmware. 170 171**BTstack integration**: *btstack_chipset_da145xx.c* contains the code to download the provided HCI firmware into the SRAM of the DA145xx. After that, it can be used as any other HCI chipset. No special support needed for DA1469x after compiling and flashing the HCI firmware. 172 173 --- 168 unchanged lines hidden --- | 168 169**BD Addr** fixed to 80:EA:CA:00:00:01. No command in HCI firmware to set it differently. Random addresses could be used instead. 170 171**Baud rate**: The baud rate is fixed at 115200 with the provided firmware. A higher baud rate could be achieved by re-compiling the HCI firmware. 172 173**BTstack integration**: *btstack_chipset_da145xx.c* contains the code to download the provided HCI firmware into the SRAM of the DA145xx. After that, it can be used as any other HCI chipset. No special support needed for DA1469x after compiling and flashing the HCI firmware. 174 175 --- 168 unchanged lines hidden --- |