Lines Matching +full:bt +full:- +full:hci +full:- +full:spi +full:- +full:slave

1 /* spi.c - SPI based Bluetooth driver */
8  * SPDX-License-Identifier: Apache-2.0
13 #include <zephyr/drivers/spi.h>
17 #include <zephyr/bluetooth/hci.h>
47 /* Max SPI buffer length for transceive operations.
50  * required by the SPI slave, as the legacy spi_transceive requires both RX/TX
52  * slave device used (e.g. nRF5X max buffer length for SPIS is 255).
54 #define SPI_MAX_MSG_LEN		255 /* As defined by X-NUCLEO-IDB04A1 BSP */
62 #define MAX_MTU (SPI_MAX_MSG_LEN - H4_HDR_SIZE - BT_L2CAP_HDR_SIZE - BT_HCI_ACL_HDR_SIZE)
66 	be transmitted across this HCI link
156 		return -EINVAL;  in bt_spi_get_header()
234 		LOG_ERR("Unknown BT buf type %d", msg[0]);  in bt_spi_rx_buf_construct()
244 	struct bt_spi_data *hci = dev->data;  in bt_spi_rx_thread()  local
261 		/* Wait for SPI bus to be available */  in bt_spi_rx_thread()
273 					/* Consider increasing controller-data-delay-us  in bt_spi_rx_thread()
276 					LOG_DBG("Controller not ready for SPI transaction "  in bt_spi_rx_thread()
291 		LOG_HEXDUMP_DBG(rxmsg, size, "SPI RX");  in bt_spi_rx_thread()
293 		/* Construct net_buf from SPI data */  in bt_spi_rx_thread()
296 			/* Handle the received HCI data */  in bt_spi_rx_thread()
297 			hci->recv(dev, buf);  in bt_spi_rx_thread()
313 	if (buf->len >= SPI_MAX_MSG_LEN) {  in bt_spi_send()
314 		LOG_ERR("Message too long (%d)", buf->len);  in bt_spi_send()
315 		return -EINVAL;  in bt_spi_send()
318 	/* Wait for SPI bus to be available */  in bt_spi_send()
331 		return -EINVAL;  in bt_spi_send()
335 	size = MIN(buf->len, size);  in bt_spi_send()
337 	if (size < buf->len) {  in bt_spi_send()
340 		ret = -ECANCELED;  in bt_spi_send()
348 			ret = bt_spi_transceive(buf->data, size,  in bt_spi_send()
353 			/* Consider increasing controller-data-delay-us  in bt_spi_send()
356 			LOG_DBG("Controller not ready for SPI transaction of %d bytes", size);  in bt_spi_send()
367 	LOG_HEXDUMP_DBG(buf->data, buf->len, "SPI TX");  in bt_spi_send()
377 	struct bt_spi_data *hci = dev->data;  in bt_spi_open()  local
386 	/* Configure IRQ pin and the IRQ call-back/handler */  in bt_spi_open()
404 	hci->recv = recv;  in bt_spi_open()
434 		LOG_ERR("SPI device not ready");  in bt_spi_init()
435 		return -ENODEV;  in bt_spi_init()
440 		return -ENODEV;  in bt_spi_init()
445 		return -ENODEV;  in bt_spi_init()
448 	LOG_DBG("BT SPI initialized");  in bt_spi_init()