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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 "extmod/nimble/nimble/hci_uart.h"
#if MICROPY_BLUETOOTH_NIMBLE
#if defined(STM32WB)
/******************************************************************************/
// HCI over IPCC
#include "rfcore.h"
int nimble_hci_uart_configure(uint32_t port) {
(void)port;
return 0;
}
int nimble_hci_uart_set_baudrate(uint32_t baudrate) {
(void)baudrate;
return 0;
}
int nimble_hci_uart_activate(void) {
rfcore_ble_init();
return 0;
}
void nimble_hci_uart_rx(hal_uart_rx_cb_t rx_cb, void *rx_arg) {
// Protect in case it's called from ble_npl_sem_pend at thread-level
MICROPY_PY_LWIP_ENTER
rfcore_ble_check_msg(rx_cb, rx_arg);
MICROPY_PY_LWIP_EXIT
}
void nimble_hci_uart_tx_strn(const char *str, uint len) {
MICROPY_PY_LWIP_ENTER
rfcore_ble_hci_cmd(len, (const uint8_t *)str);
MICROPY_PY_LWIP_EXIT
}
#else
/******************************************************************************/
// HCI over UART
#include "pendsv.h"
#include "uart.h"
#include "drivers/cyw43/cywbt.h"
pyb_uart_obj_t bt_hci_uart_obj;
static uint8_t hci_uart_rxbuf[512];
#ifdef pyb_pin_BT_DEV_WAKE
static uint32_t bt_sleep_ticks;
#endif
extern void nimble_poll(void);
mp_obj_t mp_uart_interrupt(mp_obj_t self_in) {
pendsv_schedule_dispatch(PENDSV_DISPATCH_NIMBLE, nimble_poll);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_uart_interrupt_obj, mp_uart_interrupt);
int nimble_hci_uart_set_baudrate(uint32_t baudrate) {
uart_init(&bt_hci_uart_obj, baudrate, UART_WORDLENGTH_8B, UART_PARITY_NONE, UART_STOPBITS_1, UART_HWCONTROL_RTS | UART_HWCONTROL_CTS);
uart_set_rxbuf(&bt_hci_uart_obj, sizeof(hci_uart_rxbuf), hci_uart_rxbuf);
return 0;
}
int nimble_hci_uart_configure(uint32_t port) {
// bits (8), stop (1), parity (none) and flow (rts/cts) are assumed to match MYNEWT_VAL_BLE_HCI_UART_ constants in syscfg.h.
bt_hci_uart_obj.base.type = &pyb_uart_type;
bt_hci_uart_obj.uart_id = port;
bt_hci_uart_obj.is_static = true;
bt_hci_uart_obj.timeout = 2;
bt_hci_uart_obj.timeout_char = 2;
MP_STATE_PORT(pyb_uart_obj_all)[bt_hci_uart_obj.uart_id - 1] = &bt_hci_uart_obj;
return 0;
}
int nimble_hci_uart_activate(void) {
// Interrupt on RX chunk received (idle)
// Trigger nimble poll when this happens
mp_obj_t uart_irq_fn = mp_load_attr(MP_OBJ_FROM_PTR(&bt_hci_uart_obj), MP_QSTR_irq);
mp_obj_t uargs[] = {
MP_OBJ_FROM_PTR(&mp_uart_interrupt_obj),
MP_OBJ_NEW_SMALL_INT(UART_FLAG_IDLE),
mp_const_true,
};
mp_call_function_n_kw(uart_irq_fn, 3, 0, uargs);
#if MICROPY_PY_NETWORK_CYW43
cywbt_init();
cywbt_activate();
#endif
return 0;
}
void nimble_hci_uart_rx(hal_uart_rx_cb_t rx_cb, void *rx_arg) {
#ifdef pyb_pin_BT_HOST_WAKE
int host_wake = 0;
host_wake = mp_hal_pin_read(pyb_pin_BT_HOST_WAKE);
/*
// this is just for info/tracing purposes
static int last_host_wake = 0;
if (host_wake != last_host_wake) {
printf("HOST_WAKE change %d -> %d\n", last_host_wake, host_wake);
last_host_wake = host_wake;
}
*/
#endif
while (uart_rx_any(&bt_hci_uart_obj)) {
uint8_t data = uart_rx_char(&bt_hci_uart_obj);
//printf("UART RX: %02x\n", data);
rx_cb(rx_arg, data);
}
#ifdef pyb_pin_BT_DEV_WAKE
if (host_wake == 1 && mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 0) {
if (mp_hal_ticks_ms() - bt_sleep_ticks > 500) {
//printf("BT SLEEP\n");
mp_hal_pin_high(pyb_pin_BT_DEV_WAKE); // let sleep
}
}
#endif
}
void nimble_hci_uart_tx_strn(const char *str, uint len) {
#ifdef pyb_pin_BT_DEV_WAKE
bt_sleep_ticks = mp_hal_ticks_ms();
if (mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 1) {
//printf("BT WAKE for TX\n");
mp_hal_pin_low(pyb_pin_BT_DEV_WAKE); // wake up
// Use delay_us rather than delay_ms to prevent running the scheduler (which
// might result in more BLE operations).
mp_hal_delay_us(5000); // can't go lower than this
}
#endif
uart_tx_strn(&bt_hci_uart_obj, str, len);
}
#endif // defined(STM32WB)
#endif // MICROPY_BLUETOOTH_NIMBLE
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