static int h4_send(struct net_buf *buf) { BT_DBG("buf %p type %u len %u", buf, bt_buf_get_type(buf), buf->len); net_buf_put(&tx.fifo, buf); uart_irq_tx_enable(h4_dev); return 0; }
static int h4_send(struct net_buf *buf) { BT_DBG("buf %p type %u len %u", buf, bt_buf_get_type(buf), buf->len); switch (bt_buf_get_type(buf)) { case BT_BUF_ACL_OUT: uart_poll_out(h4_dev, H4_ACL); break; case BT_BUF_CMD: uart_poll_out(h4_dev, H4_CMD); break; default: return -EINVAL; } while (buf->len) { uart_poll_out(h4_dev, net_buf_pull_u8(buf)); } net_buf_unref(buf); return 0; }
static inline void process_tx(void) { int bytes; if (!tx.buf) { tx.buf = net_buf_get(&tx.fifo, K_NO_WAIT); if (!tx.buf) { BT_ERR("TX interrupt but no pending buffer!"); uart_irq_tx_disable(h4_dev); return; } } if (!tx.type) { switch (bt_buf_get_type(tx.buf)) { case BT_BUF_ACL_OUT: tx.type = H4_ACL; break; case BT_BUF_CMD: tx.type = H4_CMD; break; default: BT_ERR("Unknown buffer type"); goto done; } bytes = uart_fifo_fill(h4_dev, &tx.type, 1); if (bytes != 1) { BT_WARN("Unable to send H:4 type"); tx.type = H4_NONE; return; } } bytes = uart_fifo_fill(h4_dev, tx.buf->data, tx.buf->len); net_buf_pull(tx.buf, bytes); if (tx.buf->len) { return; } done: tx.type = H4_NONE; net_buf_unref(tx.buf); tx.buf = net_buf_get(&tx.fifo, K_NO_WAIT); if (!tx.buf) { uart_irq_tx_disable(h4_dev); } }
static int h5_queue(struct net_buf *buf) { uint8_t type; BT_DBG("buf %p type %u len %u", buf, bt_buf_get_type(buf), buf->len); switch (bt_buf_get_type(buf)) { case BT_BUF_CMD: type = HCI_COMMAND_PKT; break; case BT_BUF_ACL_OUT: type = HCI_ACLDATA_PKT; break; default: BT_ERR("Unknown packet type %u", bt_buf_get_type(buf)); return -1; } memcpy(net_buf_push(buf, sizeof(type)), &type, sizeof(type)); nano_fifo_put(&h5.tx_queue, buf); return 0; }
static int bt_spi_send(struct net_buf *buf) { u8_t header[5] = { SPI_WRITE, 0x00, 0x00, 0x00, 0x00 }; u32_t pending; /* Buffer needs an additional byte for type */ if (buf->len >= SPI_MAX_MSG_LEN) { BT_ERR("Message too long"); return -EINVAL; } /* Allow time for the read thread to handle interrupt */ while (true) { gpio_pin_read(irq_dev, GPIO_IRQ_PIN, &pending); if (!pending) { break; } k_sleep(1); } k_sem_take(&sem_busy, K_FOREVER); switch (bt_buf_get_type(buf)) { case BT_BUF_ACL_OUT: net_buf_push_u8(buf, HCI_ACL); break; case BT_BUF_CMD: net_buf_push_u8(buf, HCI_CMD); break; default: BT_ERR("Unsupported type"); k_sem_give(&sem_busy); return -EINVAL; } /* Poll sanity values until device has woken-up */ do { #if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); gpio_pin_write(cs_dev, GPIO_CS_PIN, 0); #endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ spi_transceive(spi_dev, header, 5, rxmsg, 5); /* * RX Header (rxmsg) must contain a sanity check Byte and size * information. If it does not contain BOTH then it is * sleeping or still in the initialisation stage (waking-up). */ } while (rxmsg[STATUS_HEADER_READY] != READY_NOW || (rxmsg[1] | rxmsg[2] | rxmsg[3] | rxmsg[4]) == 0); /* Transmit the message */ do { spi_transceive(spi_dev, buf->data, buf->len, rxmsg, buf->len); } while (rxmsg[0] == 0); #if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) /* Deselect chip */ gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); #endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ k_sem_give(&sem_busy); spi_dump_message("TX:ed", buf->data, buf->len); #if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) /* * Since a RESET has been requested, the chip will now restart. * Unfortunately the BlueNRG will reply with "reset received" but * since it does not send back a NOP, we have no way to tell when the * RESET has actually taken palce. Instead, we use the vendor command * EVT_BLUE_INITIALIZED as an indication that it is safe to proceed. */ if (bt_spi_get_cmd(buf->data) == BT_HCI_OP_RESET) { k_sem_take(&sem_initialised, K_FOREVER); } #endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ net_buf_unref(buf); return 0; }