kopia lustrzana https://github.com/micropython/micropython
unix: Add support for modbluetooth and BLE using btstack.
This commit adds full support to the unix port for Bluetooth using the common extmod/modbluetooth Python bindings. This uses the libusb HCI transport, which supports many common USB BT adaptors.pull/5989/head
Jim Mussared
Damien George
rodzic
c987adb9e9
commit
7563d58210
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@ -48,6 +48,8 @@ Configuration
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- ``'mac'``: Returns the device MAC address. If a device has a fixed address
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(e.g. PYBD) then it will be returned. Otherwise (e.g. ESP32) a random
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address will be generated when the BLE interface is made active.
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Note: on some ports, accessing this value requires that the interface is
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active (so that the MAC address can be queried from the controller).
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- ``'rxbuf'``: Get/set the size in bytes of the internal buffer used to store
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incoming events. This buffer is global to the entire BLE driver and so
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@ -2,6 +2,8 @@
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ifeq ($(MICROPY_BLUETOOTH_BTSTACK),1)
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MICROPY_BLUETOOTH_BTSTACK_USB ?= 0
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BTSTACK_EXTMOD_DIR = extmod/btstack
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EXTMOD_SRC_C += extmod/btstack/modbluetooth_btstack.c
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@ -24,9 +26,17 @@ INC += -I$(BTSTACK_DIR)/3rd-party/yxml
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SRC_BTSTACK = \
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$(addprefix lib/btstack/src/, $(SRC_FILES)) \
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$(addprefix lib/btstack/src/ble/, $(filter-out %_tlv.c, $(SRC_BLE_FILES))) \
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lib/btstack/platform/embedded/btstack_run_loop_embedded.c \
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lib/btstack/platform/embedded/btstack_run_loop_embedded.c
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ifeq ($MICROPY_BLUETOOTH_BTSTACK_ENABLE_CLASSIC,1)
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ifeq ($(MICROPY_BLUETOOTH_BTSTACK_USB),1)
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SRC_BTSTACK += \
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lib/btstack/platform/libusb/hci_transport_h2_libusb.c
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CFLAGS += $(shell pkg-config libusb-1.0 --cflags)
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LDFLAGS += $(shell pkg-config libusb-1.0 --libs)
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endif
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ifeq ($(MICROPY_BLUETOOTH_BTSTACK_ENABLE_CLASSIC),1)
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include $(BTSTACK_DIR)/src/classic/Makefile.inc
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SRC_BTSTACK += \
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$(addprefix lib/btstack/src/classic/, $(SRC_CLASSIC_FILES))
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@ -41,4 +41,7 @@
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// BTstack HAL configuration
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#define HAVE_EMBEDDED_TIME_MS
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// Some USB dongles take longer to respond to HCI reset (e.g. BCM20702A).
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#define HCI_RESET_RESEND_TIMEOUT_MS 1000
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#endif // MICROPY_INCLUDED_EXTMOD_BTSTACK_BTSTACK_CONFIG_H
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@ -132,6 +132,19 @@ CFLAGS_MOD += -DMICROPY_PY_THREAD=1 -DMICROPY_PY_THREAD_GIL=0
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LDFLAGS_MOD += $(LIBPTHREAD)
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endif
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ifeq ($(MICROPY_PY_BLUETOOTH),1)
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CFLAGS_MOD += -DMICROPY_PY_BLUETOOTH=1
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CFLAGS_MOD += -DMICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE=1
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CFLAGS_MOD += -DMICROPY_PY_BLUETOOTH_GATTS_ON_READ_CALLBACK=1
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MICROPY_BLUETOOTH_BTSTACK ?= 1
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MICROPY_BLUETOOTH_BTSTACK_USB ?= 1
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endif
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ifeq ($(MICROPY_BLUETOOTH_BTSTACK),1)
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include $(TOP)/extmod/btstack/btstack.mk
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endif
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ifeq ($(MICROPY_PY_FFI),1)
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ifeq ($(MICROPY_STANDALONE),1)
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@ -176,10 +189,11 @@ SRC_C = \
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alloc.c \
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coverage.c \
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fatfs_port.c \
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btstack_usb.c \
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$(SRC_MOD) \
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$(wildcard $(VARIANT_DIR)/*.c)
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LIB_SRC_C = $(addprefix lib/,\
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LIB_SRC_C += $(addprefix lib/,\
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$(LIB_SRC_C_EXTRA) \
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timeutils/timeutils.c \
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)
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@ -187,9 +201,10 @@ LIB_SRC_C = $(addprefix lib/,\
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OBJ = $(PY_O)
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OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(LIB_SRC_C:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(EXTMOD_SRC_C:.c=.o))
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# List of sources for qstr extraction
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SRC_QSTR += $(SRC_C) $(LIB_SRC_C)
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SRC_QSTR += $(SRC_C) $(LIB_SRC_C) $(EXTMOD_SRC_C)
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# Append any auto-generated sources that are needed by sources listed in
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# SRC_QSTR
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SRC_QSTR_AUTO_DEPS +=
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@ -0,0 +1,170 @@
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/*
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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) 2020 Jim Mussared
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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 <pthread.h>
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#include <unistd.h>
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#include "py/runtime.h"
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#include "py/mperrno.h"
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#include "py/mphal.h"
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#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK
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#include "lib/btstack/src/btstack.h"
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#include "lib/btstack/platform/embedded/btstack_run_loop_embedded.h"
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#include "extmod/btstack/modbluetooth_btstack.h"
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#if !MICROPY_PY_THREAD
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#error Unix btstack requires MICROPY_PY_THREAD
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#endif
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STATIC const useconds_t USB_POLL_INTERVAL_US = 1000;
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STATIC const uint8_t read_static_address_command_complete_prefix[] = { 0x0e, 0x1b, 0x01, 0x09, 0xfc };
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STATIC uint8_t local_addr[6] = {0};
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STATIC uint8_t static_address[6] = {0};
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STATIC volatile bool have_addr = false;
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STATIC bool using_static_address = false;
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STATIC btstack_packet_callback_registration_t hci_event_callback_registration;
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STATIC void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) {
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(void)channel;
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(void)size;
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if (packet_type != HCI_EVENT_PACKET) {
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return;
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}
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switch (hci_event_packet_get_type(packet)) {
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case BTSTACK_EVENT_STATE:
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if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) {
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return;
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}
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gap_local_bd_addr(local_addr);
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if (using_static_address) {
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memcpy(local_addr, static_address, sizeof(local_addr));
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}
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have_addr = true;
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break;
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case HCI_EVENT_COMMAND_COMPLETE:
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if (memcmp(packet, read_static_address_command_complete_prefix, sizeof(read_static_address_command_complete_prefix)) == 0) {
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reverse_48(&packet[7], static_address);
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gap_random_address_set(static_address);
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using_static_address = true;
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have_addr = true;
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}
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break;
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default:
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break;
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}
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}
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// The IRQ functionality in btstack_run_loop_embedded.c is not used, so the
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// following three functions are empty.
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void hal_cpu_disable_irqs(void) {
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}
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void hal_cpu_enable_irqs(void) {
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}
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void hal_cpu_enable_irqs_and_sleep(void) {
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}
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uint32_t hal_time_ms(void) {
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return mp_hal_ticks_ms();
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}
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void mp_bluetooth_btstack_port_init(void) {
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static bool run_loop_init = false;
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if (!run_loop_init) {
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run_loop_init = true;
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btstack_run_loop_init(btstack_run_loop_embedded_get_instance());
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} else {
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btstack_run_loop_embedded_get_instance()->init();
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}
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// TODO: allow setting USB device path via cmdline/env var.
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// hci_dump_open(NULL, HCI_DUMP_STDOUT);
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hci_init(hci_transport_usb_instance(), NULL);
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hci_event_callback_registration.callback = &packet_handler;
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hci_add_event_handler(&hci_event_callback_registration);
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}
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STATIC pthread_t bstack_thread_id;
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void mp_bluetooth_btstack_port_deinit(void) {
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hci_power_control(HCI_POWER_OFF);
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// Wait for the poll loop to terminate when the state is set to OFF.
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pthread_join(bstack_thread_id, NULL);
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have_addr = false;
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}
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STATIC void *btstack_thread(void *arg) {
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(void)arg;
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hci_power_control(HCI_POWER_ON);
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// modbluetooth_btstack.c will have set the state to STARTING before
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// calling mp_bluetooth_btstack_port_start.
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// This loop will terminate when the HCI_POWER_OFF above results
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// in modbluetooth_btstack.c setting the state back to OFF.
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// Or, if a timeout results in it being set to TIMEOUT.
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while (mp_bluetooth_btstack_state == MP_BLUETOOTH_BTSTACK_STATE_STARTING || mp_bluetooth_btstack_state == MP_BLUETOOTH_BTSTACK_STATE_ACTIVE) {
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btstack_run_loop_embedded_execute_once();
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// The USB transport schedules events to the run loop at 1ms intervals,
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// and the implementation currently polls rather than selects.
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usleep(USB_POLL_INTERVAL_US);
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}
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hci_close();
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return NULL;
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}
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void mp_bluetooth_btstack_port_start(void) {
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// Create a thread to run the btstack loop.
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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pthread_create(&bstack_thread_id, &attr, &btstack_thread, NULL);
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}
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void mp_hal_get_mac(int idx, uint8_t buf[6]) {
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if (idx == MP_HAL_MAC_BDADDR) {
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if (!have_addr) {
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mp_raise_OSError(MP_ENODEV);
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}
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memcpy(buf, local_addr, sizeof(local_addr));
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}
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}
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#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK
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@ -683,6 +683,11 @@ MP_NOINLINE int main_(int argc, char **argv) {
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}
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#endif
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#if MICROPY_PY_BLUETOOTH
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void mp_bluetooth_deinit(void);
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mp_bluetooth_deinit();
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#endif
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#if MICROPY_PY_THREAD
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mp_thread_deinit();
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#endif
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@ -311,9 +311,17 @@ void mp_unix_mark_exec(void);
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#define MP_STATE_PORT MP_STATE_VM
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#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK
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struct _mp_bluetooth_btstack_root_pointers_t;
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#define MICROPY_BLUETOOTH_ROOT_POINTERS struct _mp_bluetooth_btstack_root_pointers_t *bluetooth_btstack_root_pointers;
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#else
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#define MICROPY_BLUETOOTH_ROOT_POINTERS
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#endif
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#define MICROPY_PORT_ROOT_POINTERS \
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const char *readline_hist[50]; \
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void *mmap_region_head; \
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MICROPY_BLUETOOTH_ROOT_POINTERS \
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// We need to provide a declaration/definition of alloca()
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// unless support for it is disabled.
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@ -95,3 +95,11 @@ static inline void mp_hal_delay_us(mp_uint_t us) {
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#define RAISE_ERRNO(err_flag, error_val) \
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{ if (err_flag == -1) \
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{ mp_raise_OSError(error_val); } }
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#if MICROPY_PY_BLUETOOTH
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enum {
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MP_HAL_MAC_BDADDR,
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};
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void mp_hal_get_mac(int idx, uint8_t buf[6]);
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#endif
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