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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018-2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
#include "py/mphal.h"
#include "nimble/ble.h"
#include "extmod/nimble/modbluetooth_nimble.h"
#include "extmod/nimble/hal/hal_uart.h"
#include "extmod/nimble/nimble/nimble_npl_os.h"
#include "extmod/mpbthci.h"
#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
#ifndef MICROPY_PY_BLUETOOTH_HCI_READ_MODE
#define MICROPY_PY_BLUETOOTH_HCI_READ_MODE MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE
#endif
#define HCI_TRACE (0)
static hal_uart_tx_cb_t hal_uart_tx_cb;
static void *hal_uart_tx_arg;
static hal_uart_rx_cb_t hal_uart_rx_cb;
static void *hal_uart_rx_arg;
// Provided by the port, and also possibly shared with the driver.
extern uint8_t mp_bluetooth_hci_cmd_buf[4 + 256];
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) {
hal_uart_tx_cb = tx_cb;
hal_uart_tx_arg = tx_arg;
hal_uart_rx_cb = rx_cb;
hal_uart_rx_arg = rx_arg;
return 0; // success
}
int hal_uart_config(uint32_t port, uint32_t baudrate, uint32_t bits, uint32_t stop, uint32_t parity, uint32_t flow) {
return mp_bluetooth_hci_uart_init(port, baudrate);
}
void hal_uart_start_tx(uint32_t port) {
size_t len = 0;
for (;;) {
int data = hal_uart_tx_cb(hal_uart_tx_arg);
if (data == -1) {
break;
}
mp_bluetooth_hci_cmd_buf[len++] = data;
}
#if HCI_TRACE
printf("< [% 8d] %02x", (int)mp_hal_ticks_ms(), mp_bluetooth_hci_cmd_buf[0]);
for (size_t i = 1; i < len; ++i) {
printf(":%02x", mp_bluetooth_hci_cmd_buf[i]);
}
printf("\n");
#endif
mp_bluetooth_hci_uart_write(mp_bluetooth_hci_cmd_buf, len);
if (len > 0) {
// Allow modbluetooth bindings to hook "sent packet" (e.g. to unstall l2cap channels).
mp_bluetooth_nimble_sent_hci_packet();
}
}
int hal_uart_close(uint32_t port) {
return 0; // success
}
STATIC void mp_bluetooth_hci_uart_char_cb(uint8_t chr) {
#if HCI_TRACE
printf("> %02x\n", chr);
#endif
hal_uart_rx_cb(hal_uart_rx_arg, chr);
}
void mp_bluetooth_nimble_hci_uart_process(bool run_events) {
bool host_wake = mp_bluetooth_hci_controller_woken();
for (;;) {
#if MICROPY_PY_BLUETOOTH_HCI_READ_MODE == MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE
int chr = mp_bluetooth_hci_uart_readchar();
if (chr < 0) {
break;
}
mp_bluetooth_hci_uart_char_cb(chr);
#elif MICROPY_PY_BLUETOOTH_HCI_READ_MODE == MICROPY_PY_BLUETOOTH_HCI_READ_MODE_PACKET
if (mp_bluetooth_hci_uart_readpacket(mp_bluetooth_hci_uart_char_cb) < 0) {
break;
}
#endif
// Incoming data may result in events being enqueued. If we're in
// scheduler context then we can run those events immediately.
if (run_events) {
mp_bluetooth_nimble_os_eventq_run_all();
}
}
if (host_wake) {
mp_bluetooth_hci_controller_sleep_maybe();
}
}
#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
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