kopia lustrzana https://github.com/micropython/micropython
123 wiersze
3.9 KiB
C
123 wiersze
3.9 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 "pin_static_af.h"
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#include "nimble/ble.h"
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#include "hal/hal_uart.h"
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#include "hci_uart.h"
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#if MICROPY_BLUETOOTH_NIMBLE
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/******************************************************************************/
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// Bindings Uart to Nimble
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uint8_t bt_hci_cmd_buf[4 + 256];
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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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static uint32_t bt_sleep_ticks;
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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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nimble_hci_uart_configure(port);
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nimble_hci_uart_set_baudrate(baudrate);
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return nimble_hci_uart_activate();
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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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bt_hci_cmd_buf[len++] = data;
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}
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#if 0
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printf("[% 8d] BTUTX: %02x", mp_hal_ticks_ms(), hci_cmd_buf[0]);
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for (int i = 1; i < len; ++i) {
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printf(":%02x", hci_cmd_buf[i]);
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}
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printf("\n");
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#endif
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bt_sleep_ticks = mp_hal_ticks_ms();
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#ifdef pyb_pin_BT_DEV_WAKE
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if (mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 1) {
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//printf("BT WAKE for TX\n");
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mp_hal_pin_low(pyb_pin_BT_DEV_WAKE); // wake up
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mp_hal_delay_ms(5); // can't go lower than this
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}
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#endif
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nimble_hci_uart_tx_strn((void*)bt_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 nimble_uart_process(void) {
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int host_wake = 0;
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#ifdef pyb_pin_BT_HOST_WAKE
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host_wake = mp_hal_pin_read(pyb_pin_BT_HOST_WAKE);
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#endif
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/*
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// this is just for info/tracing purposes
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static int last_host_wake = 0;
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if (host_wake != last_host_wake) {
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printf("HOST_WAKE change %d -> %d\n", last_host_wake, host_wake);
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last_host_wake = host_wake;
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}
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*/
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while (nimble_hci_uart_rx_any()) {
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uint8_t data = nimble_hci_uart_rx_char();
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//printf("UART RX: %02x\n", data);
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hal_uart_rx_cb(hal_uart_rx_arg, data);
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}
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if (host_wake == 1 && mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 0) {
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if (mp_hal_ticks_ms() - bt_sleep_ticks > 500) {
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//printf("BT SLEEP\n");
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mp_hal_pin_high(pyb_pin_BT_DEV_WAKE); // let sleep
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}
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}
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}
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#endif // MICROPY_BLUETOOTH_NIMBLE
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