106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018-2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "nimble/ble.h"
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#include "extmod/nimble/hal/hal_uart.h"
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#include "extmod/nimble/nimble/nimble_npl_os.h"
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#include "extmod/mpbthci.h"
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#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
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#define HCI_TRACE (0)
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static hal_uart_tx_cb_t hal_uart_tx_cb;
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static void *hal_uart_tx_arg;
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static hal_uart_rx_cb_t hal_uart_rx_cb;
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static void *hal_uart_rx_arg;
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// Provided by the port, and also possibly shared with the driver.
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extern uint8_t mp_bluetooth_hci_cmd_buf[4 + 256];
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int hal_uart_init_cbs(uint32_t port, hal_uart_tx_cb_t tx_cb, void *tx_arg, hal_uart_rx_cb_t rx_cb, void *rx_arg) {
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hal_uart_tx_cb = tx_cb;
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hal_uart_tx_arg = tx_arg;
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hal_uart_rx_cb = rx_cb;
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hal_uart_rx_arg = rx_arg;
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return 0; // success
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}
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int hal_uart_config(uint32_t port, uint32_t baudrate, uint32_t bits, uint32_t stop, uint32_t parity, uint32_t flow) {
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return mp_bluetooth_hci_uart_init(port, baudrate);
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}
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void hal_uart_start_tx(uint32_t port) {
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size_t len = 0;
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for (;;) {
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int data = hal_uart_tx_cb(hal_uart_tx_arg);
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if (data == -1) {
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break;
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}
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mp_bluetooth_hci_cmd_buf[len++] = data;
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}
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#if HCI_TRACE
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printf("< [% 8d] %02x", (int)mp_hal_ticks_ms(), mp_bluetooth_hci_cmd_buf[0]);
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for (size_t i = 1; i < len; ++i) {
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printf(":%02x", mp_bluetooth_hci_cmd_buf[i]);
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}
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printf("\n");
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#endif
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mp_bluetooth_hci_uart_write(mp_bluetooth_hci_cmd_buf, len);
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}
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int hal_uart_close(uint32_t port) {
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return 0; // success
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}
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void mp_bluetooth_nimble_hci_uart_process(bool run_events) {
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bool host_wake = mp_bluetooth_hci_controller_woken();
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int chr;
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while ((chr = mp_bluetooth_hci_uart_readchar()) >= 0) {
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#if HCI_TRACE
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printf("> %02x\n", chr);
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#endif
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hal_uart_rx_cb(hal_uart_rx_arg, chr);
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// Incoming data may result in events being enqueued. If we're in
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// scheduler context then we can run those events immediately.
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if (run_events) {
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mp_bluetooth_nimble_os_eventq_run_all();
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}
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}
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if (host_wake) {
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mp_bluetooth_hci_controller_sleep_maybe();
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}
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}
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#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
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