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drivers: allow setting BlueNRG public address

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The zephyr bluetooth stack expects the controller to know its public
address, if any. At least for BlueNRG, the public address is forgotten with
every reset/power cycle, so there needs to be a way to set it from within
zephyr. This is accomplished using the `Aci_Hal_Write_Config_Data` HCI
command, as described in PM0237.

Signed-off-by: Armin Brauns <armin.brauns@embedded-solutions.at>
This commit is contained in:
Armin Brauns 2023-11-14 14:27:55 +00:00 • committed by Carles Cufí
commit 4321f86f1e
2 changed files with 25 additions and 0 deletions
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1
drivers/bluetooth/hci/Kconfig
View file

@ -120,6 +120,7 @@ config BT_SPI_INIT_PRIORITY
config BT_BLUENRG_ACI
bool "ACI message with with BlueNRG-based devices"
select BT_HCI_SET_PUBLIC_ADDR
help
Enable support for devices compatible with the BlueNRG Bluetooth
Stack. Current driver supports: ST BLUENRG-MS.

24
drivers/bluetooth/hci/spi.c
View file

@ -95,6 +95,8 @@ static uint8_t attempts;
#if defined(CONFIG_BT_BLUENRG_ACI)
#define BLUENRG_ACI_WRITE_CONFIG_DATA BT_OP(BT_OGF_VS, 0x000C)
#define BLUENRG_CONFIG_PUBADDR_OFFSET 0x00
#define BLUENRG_CONFIG_PUBADDR_LEN 0x06
#define BLUENRG_CONFIG_LL_ONLY_OFFSET 0x2C
#define BLUENRG_CONFIG_LL_ONLY_LEN 0x01
@ -240,6 +242,27 @@ static int bt_spi_send_aci_config(uint8_t offset, const uint8_t *value, size_t v
return bt_hci_cmd_send(BLUENRG_ACI_WRITE_CONFIG_DATA, buf);
}
int bt_spi_bluenrg_setup(const struct bt_hci_setup_params *params)
{
int ret;
const bt_addr_t addr = params->public_addr;
if (bt_addr_eq(&addr, BT_ADDR_NONE) || bt_addr_eq(&addr, BT_ADDR_ANY)) {
return -EINVAL;
}
ret = bt_spi_send_aci_config(
BLUENRG_CONFIG_PUBADDR_OFFSET,
addr.val, sizeof(addr.val));
if (ret != 0) {
LOG_ERR("Failed to set BlueNRG public address (%d)", ret);
return ret;
}
return 0;
}
#endif /* CONFIG_BT_BLUENRG_ACI */
static struct net_buf *bt_spi_rx_buf_construct(uint8_t *msg)
@ -516,6 +539,7 @@ static const struct bt_hci_driver drv = {
.bus = BT_HCI_DRIVER_BUS_SPI,
#if defined(CONFIG_BT_BLUENRG_ACI)
.quirks = BT_QUIRK_NO_RESET,
.setup = bt_spi_bluenrg_setup,
#endif /* CONFIG_BT_BLUENRG_ACI */
.open = bt_spi_open,
.send = bt_spi_send,