270 lines
8.7 KiB
C
270 lines
8.7 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) 2018-2021 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 <stdio.h>
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "extmod/mpbthci.h"
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#include "extmod/modbluetooth.h"
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#include "shared/runtime/softtimer.h"
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#include "mpbthciport.h"
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#include "pendsv.h"
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#include "shared/runtime/mpirq.h"
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#if MICROPY_PY_BLUETOOTH
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#define DEBUG_printf(...) // printf("mpbthciport.c: " __VA_ARGS__)
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uint8_t mp_bluetooth_hci_cmd_buf[4 + 256];
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// Soft timer for scheduling a HCI poll.
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STATIC soft_timer_entry_t mp_bluetooth_hci_soft_timer;
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// This is called by soft_timer and executes at IRQ_PRI_PENDSV.
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STATIC void mp_bluetooth_hci_soft_timer_callback(soft_timer_entry_t *self) {
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mp_bluetooth_hci_poll_now();
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}
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void mp_bluetooth_hci_init(void) {
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soft_timer_static_init(
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&mp_bluetooth_hci_soft_timer,
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SOFT_TIMER_MODE_ONE_SHOT,
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0,
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mp_bluetooth_hci_soft_timer_callback
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);
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}
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STATIC void mp_bluetooth_hci_start_polling(void) {
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mp_bluetooth_hci_poll_now();
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}
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void mp_bluetooth_hci_poll_in_ms_default(uint32_t ms) {
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soft_timer_reinsert(&mp_bluetooth_hci_soft_timer, ms);
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}
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#if MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
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STATIC mp_sched_node_t mp_bluetooth_hci_sched_node;
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// For synchronous mode, we run all BLE stack code inside a scheduled task.
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// This task is scheduled periodically via a soft timer, or
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// immediately on HCI UART RXIDLE.
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STATIC void run_events_scheduled_task(mp_sched_node_t *node) {
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// This will process all buffered HCI UART data, and run any callouts or events.
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(void)node;
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mp_bluetooth_hci_poll();
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}
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// Called periodically (systick) or directly (e.g. UART RX IRQ) in order to
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// request that processing happens ASAP in the scheduler.
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void mp_bluetooth_hci_poll_now_default(void) {
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mp_sched_schedule_node(&mp_bluetooth_hci_sched_node, run_events_scheduled_task);
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}
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#else // !MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
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void mp_bluetooth_hci_poll_now_default(void) {
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pendsv_schedule_dispatch(PENDSV_DISPATCH_BLUETOOTH_HCI, mp_bluetooth_hci_poll);
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}
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#endif
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#if defined(STM32WB)
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/******************************************************************************/
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// HCI over IPCC
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#include <string.h>
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#include "rfcore.h"
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int mp_bluetooth_hci_uart_init(uint32_t port, uint32_t baudrate) {
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(void)port;
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(void)baudrate;
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DEBUG_printf("mp_bluetooth_hci_uart_init (stm32 rfcore)\n");
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rfcore_ble_init();
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// Start the HCI polling to process any initial events/packets.
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mp_bluetooth_hci_start_polling();
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return 0;
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}
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int mp_bluetooth_hci_uart_deinit(void) {
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DEBUG_printf("mp_bluetooth_hci_uart_deinit (stm32 rfcore)\n");
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return 0;
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}
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int mp_bluetooth_hci_uart_set_baudrate(uint32_t baudrate) {
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(void)baudrate;
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return 0;
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}
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int mp_bluetooth_hci_uart_write(const uint8_t *buf, size_t len) {
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MICROPY_PY_BLUETOOTH_ENTER
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rfcore_ble_hci_cmd(len, (const uint8_t *)buf);
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MICROPY_PY_BLUETOOTH_EXIT
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return 0;
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}
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// Callback to forward data from rfcore to the bluetooth hci handler.
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STATIC void mp_bluetooth_hci_uart_msg_cb(void *env, const uint8_t *buf, size_t len) {
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mp_bluetooth_hci_uart_readchar_t handler = (mp_bluetooth_hci_uart_readchar_t)env;
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for (size_t i = 0; i < len; ++i) {
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handler(buf[i]);
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}
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}
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int mp_bluetooth_hci_uart_readpacket(mp_bluetooth_hci_uart_readchar_t handler) {
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size_t len = rfcore_ble_check_msg(mp_bluetooth_hci_uart_msg_cb, (void *)handler);
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return (len > 0) ? len : -1;
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}
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#else
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/******************************************************************************/
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// HCI over UART
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#include "uart.h"
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pyb_uart_obj_t mp_bluetooth_hci_uart_obj;
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mp_irq_obj_t mp_bluetooth_hci_uart_irq_obj;
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static uint8_t hci_uart_rxbuf[768];
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mp_obj_t mp_uart_interrupt(mp_obj_t self_in) {
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// Queue up the scheduler to run the HCI UART and event processing ASAP.
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mp_bluetooth_hci_poll_now();
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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 mp_bluetooth_hci_uart_init(uint32_t port, uint32_t baudrate) {
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DEBUG_printf("mp_bluetooth_hci_uart_init (stm32)\n");
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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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mp_bluetooth_hci_uart_obj.base.type = &pyb_uart_type;
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mp_bluetooth_hci_uart_obj.uart_id = port;
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mp_bluetooth_hci_uart_obj.is_static = true;
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// We don't want to block indefinitely, but expect flow control is doing its job.
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mp_bluetooth_hci_uart_obj.timeout = 200;
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mp_bluetooth_hci_uart_obj.timeout_char = 200;
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MP_STATE_PORT(pyb_uart_obj_all)[mp_bluetooth_hci_uart_obj.uart_id - 1] = &mp_bluetooth_hci_uart_obj;
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// Initialise the UART.
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uart_init(&mp_bluetooth_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(&mp_bluetooth_hci_uart_obj, sizeof(hci_uart_rxbuf), hci_uart_rxbuf);
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// Add IRQ handler for IDLE (i.e. packet finished).
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uart_irq_config(&mp_bluetooth_hci_uart_obj, false);
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mp_irq_init(&mp_bluetooth_hci_uart_irq_obj, &uart_irq_methods, MP_OBJ_FROM_PTR(&mp_bluetooth_hci_uart_obj));
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mp_bluetooth_hci_uart_obj.mp_irq_obj = &mp_bluetooth_hci_uart_irq_obj;
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mp_bluetooth_hci_uart_obj.mp_irq_trigger = UART_FLAG_IDLE;
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mp_bluetooth_hci_uart_irq_obj.handler = MP_OBJ_FROM_PTR(&mp_uart_interrupt_obj);
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mp_bluetooth_hci_uart_irq_obj.ishard = true;
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uart_irq_config(&mp_bluetooth_hci_uart_obj, true);
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// Start the HCI polling to process any initial events/packets.
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mp_bluetooth_hci_start_polling();
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return 0;
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}
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int mp_bluetooth_hci_uart_deinit(void) {
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DEBUG_printf("mp_bluetooth_hci_uart_deinit (stm32)\n");
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// TODO: deinit mp_bluetooth_hci_uart_obj
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return 0;
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}
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int mp_bluetooth_hci_uart_set_baudrate(uint32_t baudrate) {
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DEBUG_printf("mp_bluetooth_hci_uart_set_baudrate(%lu) (stm32)\n", baudrate);
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uart_set_baudrate(&mp_bluetooth_hci_uart_obj, baudrate);
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return 0;
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}
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int mp_bluetooth_hci_uart_write(const uint8_t *buf, size_t len) {
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// DEBUG_printf("mp_bluetooth_hci_uart_write (stm32)\n");
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mp_bluetooth_hci_controller_wakeup();
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int errcode;
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uart_tx_data(&mp_bluetooth_hci_uart_obj, (void *)buf, len, &errcode);
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if (errcode != 0) {
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mp_printf(&mp_plat_print, "\nmp_bluetooth_hci_uart_write: failed to write to UART %d\n", errcode);
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}
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return 0;
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}
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// This function expects the controller to be in the wake state via a previous call
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// to mp_bluetooth_hci_controller_woken.
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int mp_bluetooth_hci_uart_readchar(void) {
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// DEBUG_printf("mp_bluetooth_hci_uart_readchar (stm32)\n");
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if (uart_rx_any(&mp_bluetooth_hci_uart_obj)) {
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// DEBUG_printf("... available\n");
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return uart_rx_char(&mp_bluetooth_hci_uart_obj);
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} else {
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return -1;
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}
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}
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#endif // defined(STM32WB)
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// Default (weak) implementation of the HCI controller interface.
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// A driver (e.g. cywbt43.c) can override these for controller-specific
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// functionality (i.e. power management).
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MP_WEAK int mp_bluetooth_hci_controller_init(void) {
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DEBUG_printf("mp_bluetooth_hci_controller_init (default)\n");
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return 0;
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}
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MP_WEAK int mp_bluetooth_hci_controller_deinit(void) {
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DEBUG_printf("mp_bluetooth_hci_controller_deinit (default)\n");
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return 0;
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}
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MP_WEAK int mp_bluetooth_hci_controller_sleep_maybe(void) {
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DEBUG_printf("mp_bluetooth_hci_controller_sleep_maybe (default)\n");
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return 0;
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}
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MP_WEAK bool mp_bluetooth_hci_controller_woken(void) {
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DEBUG_printf("mp_bluetooth_hci_controller_woken (default)\n");
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return true;
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}
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MP_WEAK int mp_bluetooth_hci_controller_wakeup(void) {
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DEBUG_printf("mp_bluetooth_hci_controller_wakeup (default)\n");
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return 0;
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}
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#endif // MICROPY_PY_BLUETOOTH
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