97 lines
3.3 KiB
C
97 lines
3.3 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 "uart.h"
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#include "pendsv.h"
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#include "drivers/cyw43/cywbt.h"
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#if MICROPY_BLUETOOTH_NIMBLE
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/******************************************************************************/
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// UART
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pyb_uart_obj_t bt_hci_uart_obj;
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static uint8_t hci_uart_rxbuf[512];
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extern void nimble_poll(void);
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mp_obj_t mp_uart_interrupt(mp_obj_t self_in) {
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pendsv_schedule_dispatch(PENDSV_DISPATCH_NIMBLE, nimble_poll);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(mp_uart_interrupt_obj, mp_uart_interrupt);
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int nimble_hci_uart_set_baudrate(uint32_t baudrate) {
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uart_init(&bt_hci_uart_obj, baudrate, UART_WORDLENGTH_8B, UART_PARITY_NONE, UART_STOPBITS_1, UART_HWCONTROL_RTS | UART_HWCONTROL_CTS);
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uart_set_rxbuf(&bt_hci_uart_obj, sizeof(hci_uart_rxbuf), hci_uart_rxbuf);
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return 0;
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}
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int nimble_hci_uart_configure(uint32_t port) {
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// bits (8), stop (1), parity (none) and flow (rts/cts) are assumed to match MYNEWT_VAL_BLE_HCI_UART_ constants in syscfg.h.
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bt_hci_uart_obj.base.type = &pyb_uart_type;
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bt_hci_uart_obj.uart_id = port;
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bt_hci_uart_obj.is_static = true;
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bt_hci_uart_obj.timeout = 2;
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bt_hci_uart_obj.timeout_char = 2;
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MP_STATE_PORT(pyb_uart_obj_all)[bt_hci_uart_obj.uart_id - 1] = &bt_hci_uart_obj;
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return 0;
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}
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int nimble_hci_uart_activate(void) {
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// Interrupt on RX chunk received (idle)
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// Trigger nimble poll when this happens
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mp_obj_t uart_irq_fn = mp_load_attr(&bt_hci_uart_obj, MP_QSTR_irq);
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mp_obj_t uargs[] = {
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MP_OBJ_FROM_PTR(&mp_uart_interrupt_obj),
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MP_OBJ_NEW_SMALL_INT(UART_FLAG_IDLE),
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mp_const_true,
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};
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mp_call_function_n_kw(uart_irq_fn, 3, 0, uargs);
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#if MICROPY_PY_NETWORK_CYW43
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cywbt_init();
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cywbt_activate();
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#endif
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return 0;
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}
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mp_uint_t nimble_hci_uart_rx_any() {
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return uart_rx_any(&bt_hci_uart_obj);
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}
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int nimble_hci_uart_rx_char() {
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return uart_rx_char(&bt_hci_uart_obj);
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}
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void nimble_hci_uart_tx_strn(const char *str, uint len) {
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uart_tx_strn(&bt_hci_uart_obj, str, len);
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}
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#endif // MICROPY_BLUETOOTH_NIMBLE
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