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esp-idf/components/bt/bt.c

604 wiersze
18 KiB
C
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "esp_heap_caps_init.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#include "freertos/xtensa_api.h"
#include "freertos/portmacro.h"
#include "xtensa/core-macros.h"
#include "esp_types.h"
#include "esp_system.h"
#include "esp_task.h"
#include "esp_intr.h"
#include "esp_attr.h"
#include "esp_phy_init.h"
#include "esp_bt.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_pm.h"
#include "esp_ipc.h"
#include "driver/periph_ctrl.h"
#if CONFIG_BT_ENABLED
#define BTDM_LOG_TAG "BTDM_INIT"
#define BTDM_INIT_PERIOD (5000) /* ms */
/* Bluetooth system and controller config */
#define BTDM_CFG_BT_DATA_RELEASE (1<<0)
#define BTDM_CFG_HCI_UART (1<<1)
#define BTDM_CFG_CONTROLLER_RUN_APP_CPU (1<<2)
/* Other reserved for future */
/* not for user call, so don't put to include file */
extern void btdm_osi_funcs_register(void *osi_funcs);
extern int btdm_controller_init(uint32_t config_mask, esp_bt_controller_config_t *config_opts);
extern int btdm_controller_deinit(void);
extern int btdm_controller_enable(esp_bt_mode_t mode);
extern int btdm_controller_disable(esp_bt_mode_t mode);
extern uint8_t btdm_controller_get_mode(void);
extern void btdm_rf_bb_init(void);
/* VHCI function interface */
typedef struct vhci_host_callback {
void (*notify_host_send_available)(void); /*!< callback used to notify that the host can send packet to controller */
int (*notify_host_recv)(uint8_t *data, uint16_t len); /*!< callback used to notify that the controller has a packet to send to the host*/
} vhci_host_callback_t;
extern bool API_vhci_host_check_send_available(void);
extern void API_vhci_host_send_packet(uint8_t *data, uint16_t len);
extern void API_vhci_host_register_callback(const vhci_host_callback_t *callback);
extern int ble_txpwr_set(int power_type, int power_level);
extern int ble_txpwr_get(int power_type);
extern char _bss_start_btdm;
extern char _bss_end_btdm;
extern char _data_start_btdm;
extern char _data_end_btdm;
extern uint32_t _data_start_btdm_rom;
extern uint32_t _data_end_btdm_rom;
#define BT_DEBUG(...)
#define BT_API_CALL_CHECK(info, api_call, ret) \
do{\
esp_err_t __err = (api_call);\
if ((ret) != __err) {\
BT_DEBUG("%s %d %s ret=%d\n", __FUNCTION__, __LINE__, (info), __err);\
return __err;\
}\
} while(0)
#define OSI_FUNCS_TIME_BLOCKING 0xffffffff
typedef struct {
esp_bt_mode_t mode;
intptr_t start;
intptr_t end;
} btdm_dram_available_region_t;
/* the mode column will be modifid by release function to indicate the available region */
static btdm_dram_available_region_t btdm_dram_available_region[] = {
//following is .data
{ESP_BT_MODE_BTDM, 0x3ffae6e0, 0x3ffaff10},
//following is memory which HW will use
{ESP_BT_MODE_BTDM, 0x3ffb0000, 0x3ffb09a8},
{ESP_BT_MODE_BLE, 0x3ffb09a8, 0x3ffb1ddc},
{ESP_BT_MODE_BTDM, 0x3ffb1ddc, 0x3ffb2730},
{ESP_BT_MODE_CLASSIC_BT, 0x3ffb2730, 0x3ffb8000},
//following is .bss
{ESP_BT_MODE_BTDM, 0x3ffb8000, 0x3ffbbb28},
{ESP_BT_MODE_CLASSIC_BT, 0x3ffbbb28, 0x3ffbdb28},
{ESP_BT_MODE_BTDM, 0x3ffbdb28, 0x3ffc0000},
};
struct osi_funcs_t {
xt_handler (*_set_isr)(int n, xt_handler f, void *arg);
void (*_ints_on)(unsigned int mask);
void (*_interrupt_disable)(void);
void (*_interrupt_restore)(void);
void (*_task_yield)(void);
void (*_task_yield_from_isr)(void);
void *(*_semphr_create)(uint32_t max, uint32_t init);
void (*_semphr_delete)(void *semphr);
int32_t (*_semphr_take_from_isr)(void *semphr, void *hptw);
int32_t (*_semphr_give_from_isr)(void *semphr, void *hptw);
int32_t (*_semphr_take)(void *semphr, uint32_t block_time_ms);
int32_t (*_semphr_give)(void *semphr);
void *(*_mutex_create)(void);
void (*_mutex_delete)(void *mutex);
int32_t (*_mutex_lock)(void *mutex);
int32_t (*_mutex_unlock)(void *mutex);
void *(* _queue_create)(uint32_t queue_len, uint32_t item_size);
void (* _queue_delete)(void *queue);
int32_t (* _queue_send)(void *queue, void *item, uint32_t block_time_ms);
int32_t (* _queue_send_from_isr)(void *queue, void *item, void *hptw);
int32_t (* _queue_recv)(void *queue, void *item, uint32_t block_time_ms);
int32_t (* _queue_recv_from_isr)(void *queue, void *item, void *hptw);
int32_t (* _task_create)(void *task_func, const char *name, uint32_t stack_depth, void *param, uint32_t prio, void *task_handle, uint32_t core_id);
void (* _task_delete)(void *task_handle);
bool (* _is_in_isr)(void);
int (* _cause_sw_intr_to_core)(int core_id, int intr_no);
void *(* _malloc)(uint32_t size);
void (* _free)(void *p);
int32_t (* _read_efuse_mac)(uint8_t mac[6]);
void (* _srand)(unsigned int seed);
int (* _rand)(void);
};
/* Static variable declare */
static bool btdm_bb_init_flag = false;
static esp_bt_controller_status_t btdm_controller_status = ESP_BT_CONTROLLER_STATUS_IDLE;
static portMUX_TYPE global_int_mux = portMUX_INITIALIZER_UNLOCKED;
#ifdef CONFIG_PM_ENABLE
static esp_pm_lock_handle_t s_pm_lock;
#endif
static void IRAM_ATTR interrupt_disable(void)
{
portENTER_CRITICAL(&global_int_mux);
}
static void IRAM_ATTR interrupt_restore(void)
{
portEXIT_CRITICAL(&global_int_mux);
}
static void IRAM_ATTR task_yield_from_isr(void)
{
portYIELD_FROM_ISR();
}
static void *IRAM_ATTR semphr_create_wrapper(uint32_t max, uint32_t init)
{
return (void *)xSemaphoreCreateCounting(max, init);
}
static void IRAM_ATTR semphr_delete_wrapper(void *semphr)
{
vSemaphoreDelete(semphr);
}
static int32_t IRAM_ATTR semphr_take_from_isr_wrapper(void *semphr, void *hptw)
{
return (int32_t)xSemaphoreTakeFromISR(semphr, hptw);
}
static int32_t IRAM_ATTR semphr_give_from_isr_wrapper(void *semphr, void *hptw)
{
return (int32_t)xSemaphoreGiveFromISR(semphr, hptw);
}
static int32_t IRAM_ATTR semphr_take_wrapper(void *semphr, uint32_t block_time_ms)
{
if (block_time_ms == OSI_FUNCS_TIME_BLOCKING) {
return (int32_t)xSemaphoreTake(semphr, portMAX_DELAY);
} else {
return (int32_t)xSemaphoreTake(semphr, block_time_ms / portTICK_PERIOD_MS);
}
}
static int32_t IRAM_ATTR semphr_give_wrapper(void *semphr)
{
return (int32_t)xSemaphoreGive(semphr);
}
static void *IRAM_ATTR mutex_create_wrapper(void)
{
return (void *)xSemaphoreCreateMutex();
}
static void IRAM_ATTR mutex_delete_wrapper(void *mutex)
{
vSemaphoreDelete(mutex);
}
static int32_t IRAM_ATTR mutex_lock_wrapper(void *mutex)
{
return (int32_t)xSemaphoreTake(mutex, portMAX_DELAY);
}
static int32_t IRAM_ATTR mutex_unlock_wrapper(void *mutex)
{
return (int32_t)xSemaphoreGive(mutex);
}
static void *IRAM_ATTR queue_create_wrapper(uint32_t queue_len, uint32_t item_size)
{
return (void *)xQueueCreate(queue_len, item_size);
}
static void IRAM_ATTR queue_delete_wrapper(void *queue)
{
vQueueDelete(queue);
}
static int32_t IRAM_ATTR queue_send_wrapper(void *queue, void *item, uint32_t block_time_ms)
{
if (block_time_ms == OSI_FUNCS_TIME_BLOCKING) {
return (int32_t)xQueueSend(queue, item, portMAX_DELAY);
} else {
return (int32_t)xQueueSend(queue, item, block_time_ms / portTICK_PERIOD_MS);
}
}
static int32_t IRAM_ATTR queue_send_from_isr_wrapper(void *queue, void *item, void *hptw)
{
return (int32_t)xQueueSendFromISR(queue, item, hptw);
}
static int32_t IRAM_ATTR queue_recv_wrapper(void *queue, void *item, uint32_t block_time_ms)
{
if (block_time_ms == OSI_FUNCS_TIME_BLOCKING) {
return (int32_t)xQueueReceive(queue, item, portMAX_DELAY);
} else {
return (int32_t)xQueueReceive(queue, item, block_time_ms / portTICK_PERIOD_MS);
}
}
static int32_t IRAM_ATTR queue_recv_from_isr_wrapper(void *queue, void *item, void *hptw)
{
return (int32_t)xQueueReceiveFromISR(queue, item, hptw);
}
static int32_t IRAM_ATTR task_create_wrapper(void *task_func, const char *name, uint32_t stack_depth, void *param, uint32_t prio, void *task_handle, uint32_t core_id)
{
return (uint32_t)xTaskCreatePinnedToCore(task_func, name, stack_depth, param, prio, task_handle, (core_id < portNUM_PROCESSORS ? core_id : tskNO_AFFINITY));
}
static void IRAM_ATTR task_delete_wrapper(void *task_handle)
{
vTaskDelete(task_handle);
}
static bool IRAM_ATTR is_in_isr_wrapper(void)
{
return (bool)xPortInIsrContext();
}
static void IRAM_ATTR cause_sw_intr(void *arg)
{
/* just convert void * to int, because the width is the same */
uint32_t intr_no = (uint32_t)arg;
XTHAL_SET_INTSET((1<<intr_no));
}
static int IRAM_ATTR cause_sw_intr_to_core_wrapper(int core_id, int intr_no)
{
esp_err_t err = ESP_OK;
if (xPortGetCoreID() == core_id) {
cause_sw_intr((void *)intr_no);
} else {
err = esp_ipc_call(core_id, cause_sw_intr, (void *)intr_no);
}
return err;
}
static int32_t IRAM_ATTR read_mac_wrapper(uint8_t mac[6])
{
return esp_read_mac(mac, ESP_MAC_BT);
}
static void IRAM_ATTR srand_wrapper(unsigned int seed)
{
/* empty function */
}
static int IRAM_ATTR rand_wrapper(void)
{
return (int)esp_random();
}
static struct osi_funcs_t osi_funcs = {
._set_isr = xt_set_interrupt_handler,
._ints_on = xt_ints_on,
._interrupt_disable = interrupt_disable,
._interrupt_restore = interrupt_restore,
._task_yield = vPortYield,
._task_yield_from_isr = task_yield_from_isr,
._semphr_create = semphr_create_wrapper,
._semphr_delete = semphr_delete_wrapper,
._semphr_take_from_isr = semphr_take_from_isr_wrapper,
._semphr_give_from_isr = semphr_give_from_isr_wrapper,
._semphr_take = semphr_take_wrapper,
._semphr_give = semphr_give_wrapper,
._mutex_create = mutex_create_wrapper,
._mutex_delete = mutex_delete_wrapper,
._mutex_lock = mutex_lock_wrapper,
._mutex_unlock = mutex_unlock_wrapper,
._queue_create = queue_create_wrapper,
._queue_delete = queue_delete_wrapper,
._queue_send = queue_send_wrapper,
._queue_send_from_isr = queue_send_from_isr_wrapper,
._queue_recv = queue_recv_wrapper,
._queue_recv_from_isr = queue_recv_from_isr_wrapper,
._task_create = task_create_wrapper,
._task_delete = task_delete_wrapper,
._is_in_isr = is_in_isr_wrapper,
._cause_sw_intr_to_core = cause_sw_intr_to_core_wrapper,
._malloc = malloc,
._free = free,
._read_efuse_mac = read_mac_wrapper,
._srand = srand_wrapper,
._rand = rand_wrapper,
};
bool esp_vhci_host_check_send_available(void)
{
return API_vhci_host_check_send_available();
}
void esp_vhci_host_send_packet(uint8_t *data, uint16_t len)
{
API_vhci_host_send_packet(data, len);
}
void esp_vhci_host_register_callback(const esp_vhci_host_callback_t *callback)
{
API_vhci_host_register_callback((const vhci_host_callback_t *)callback);
}
static uint32_t btdm_config_mask_load(void)
{
uint32_t mask = 0x0;
if (btdm_dram_available_region[0].mode == ESP_BT_MODE_BLE) {
mask |= BTDM_CFG_BT_DATA_RELEASE;
}
#if CONFIG_BTDM_CONTROLLER_HCI_MODE_UART_H4
mask |= BTDM_CFG_HCI_UART;
#endif
#if CONFIG_BTDM_CONTROLLER_PINNED_TO_CORE == 1
mask |= BTDM_CFG_CONTROLLER_RUN_APP_CPU;
#endif
return mask;
}
static void btdm_controller_mem_init(void)
{
/* initialise .bss, .data and .etc section */
memcpy(&_data_start_btdm, (void *)_data_start_btdm_rom, &_data_end_btdm - &_data_start_btdm);
ESP_LOGD(BTDM_LOG_TAG, ".data initialise [0x%08x] <== [0x%08x]\n", (uint32_t)&_data_start_btdm, _data_start_btdm_rom);
for (int i = 1; i < sizeof(btdm_dram_available_region)/sizeof(btdm_dram_available_region_t); i++) {
if (btdm_dram_available_region[i].mode != ESP_BT_MODE_IDLE) {
memset((void *)btdm_dram_available_region[i].start, 0x0, btdm_dram_available_region[i].end - btdm_dram_available_region[i].start);
ESP_LOGD(BTDM_LOG_TAG, ".bss initialise [0x%08x] - [0x%08x]\n", btdm_dram_available_region[i].start, btdm_dram_available_region[i].end);
}
}
}
esp_err_t esp_bt_controller_mem_release(esp_bt_mode_t mode)
{
bool update = true;
intptr_t mem_start, mem_end;
if (btdm_controller_status != ESP_BT_CONTROLLER_STATUS_IDLE) {
return ESP_ERR_INVALID_STATE;
}
//already relesed
if (!(mode & btdm_dram_available_region[0].mode)) {
return ESP_ERR_INVALID_STATE;
}
for (int i = 0; i < sizeof(btdm_dram_available_region)/sizeof(btdm_dram_available_region_t); i++) {
//skip the share mode, idle mode and other mode
if (btdm_dram_available_region[i].mode == ESP_BT_MODE_IDLE
|| (mode & btdm_dram_available_region[i].mode) != btdm_dram_available_region[i].mode) {
//clear the bit of the mode which will be released
btdm_dram_available_region[i].mode &= ~mode;
continue;
} else {
//clear the bit of the mode which will be released
btdm_dram_available_region[i].mode &= ~mode;
}
if (update) {
mem_start = btdm_dram_available_region[i].start;
mem_end = btdm_dram_available_region[i].end;
update = false;
}
if (i < sizeof(btdm_dram_available_region)/sizeof(btdm_dram_available_region_t) - 1) {
mem_end = btdm_dram_available_region[i].end;
if (btdm_dram_available_region[i+1].mode != ESP_BT_MODE_IDLE
&& (mode & btdm_dram_available_region[i+1].mode) == btdm_dram_available_region[i+1].mode
&& mem_end == btdm_dram_available_region[i+1].start) {
continue;
} else {
ESP_LOGD(BTDM_LOG_TAG, "Release DRAM [0x%08x] - [0x%08x]\n", mem_start, mem_end);
ESP_ERROR_CHECK( heap_caps_add_region(mem_start, mem_end));
update = true;
}
} else {
mem_end = btdm_dram_available_region[i].end;
ESP_LOGD(BTDM_LOG_TAG, "Release DRAM [0x%08x] - [0x%08x]\n", mem_start, mem_end);
ESP_ERROR_CHECK( heap_caps_add_region(mem_start, mem_end));
update = true;
}
}
return ESP_OK;
}
esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
{
BaseType_t ret;
uint32_t btdm_cfg_mask = 0;
if (btdm_controller_status != ESP_BT_CONTROLLER_STATUS_IDLE) {
return ESP_ERR_INVALID_STATE;
}
//if all the bt available memory was already released, cannot initialize bluetooth controller
if (btdm_dram_available_region[0].mode == ESP_BT_MODE_IDLE) {
return ESP_ERR_INVALID_STATE;
}
if (cfg == NULL) {
return ESP_ERR_INVALID_ARG;
}
if (cfg->controller_task_prio != ESP_TASK_BT_CONTROLLER_PRIO
|| cfg->controller_task_stack_size < ESP_TASK_BT_CONTROLLER_STACK) {
return ESP_ERR_INVALID_ARG;
}
#ifdef CONFIG_PM_ENABLE
esp_err_t err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "bt", &s_pm_lock);
if (err != ESP_OK) {
return err;
}
#endif
btdm_osi_funcs_register(&osi_funcs);
btdm_controller_mem_init();
periph_module_enable(PERIPH_BT_MODULE);
btdm_cfg_mask = btdm_config_mask_load();
ret = btdm_controller_init(btdm_cfg_mask, cfg);
if (ret) {
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_delete(s_pm_lock);
s_pm_lock = NULL;
#endif
return ESP_ERR_NO_MEM;
}
btdm_controller_status = ESP_BT_CONTROLLER_STATUS_INITED;
return ESP_OK;
}
esp_err_t esp_bt_controller_deinit(void)
{
if (btdm_controller_status != ESP_BT_CONTROLLER_STATUS_INITED) {
return ESP_ERR_INVALID_STATE;
}
if (btdm_controller_deinit() != 0) {
return ESP_ERR_NO_MEM;
}
periph_module_disable(PERIPH_BT_MODULE);
btdm_controller_status = ESP_BT_CONTROLLER_STATUS_IDLE;
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_delete(s_pm_lock);
s_pm_lock = NULL;
#endif
return ESP_OK;
}
esp_err_t esp_bt_controller_enable(esp_bt_mode_t mode)
{
int ret;
if (btdm_controller_status != ESP_BT_CONTROLLER_STATUS_INITED) {
return ESP_ERR_INVALID_STATE;
}
//check the mode is available mode
if (mode & ~btdm_dram_available_region[0].mode) {
return ESP_ERR_INVALID_ARG;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_acquire(s_pm_lock);
#endif
esp_phy_load_cal_and_init();
if (btdm_bb_init_flag == false) {
btdm_bb_init_flag = true;
btdm_rf_bb_init(); /* only initialise once */
}
ret = btdm_controller_enable(mode);
if (ret) {
return ESP_ERR_INVALID_STATE;
}
btdm_controller_status = ESP_BT_CONTROLLER_STATUS_ENABLED;
return ESP_OK;
}
esp_err_t esp_bt_controller_disable(void)
{
int ret;
if (btdm_controller_status != ESP_BT_CONTROLLER_STATUS_ENABLED) {
return ESP_ERR_INVALID_STATE;
}
ret = btdm_controller_disable(btdm_controller_get_mode());
if (ret < 0) {
return ESP_ERR_INVALID_STATE;
}
if (ret == ESP_BT_MODE_IDLE) {
esp_phy_rf_deinit();
btdm_controller_status = ESP_BT_CONTROLLER_STATUS_INITED;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_release(s_pm_lock);
#endif
return ESP_OK;
}
esp_bt_controller_status_t esp_bt_controller_get_status(void)
{
return btdm_controller_status;
}
/* extra functions */
esp_err_t esp_ble_tx_power_set(esp_ble_power_type_t power_type, esp_power_level_t power_level)
{
if (ble_txpwr_set(power_type, power_level) != 0) {
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
esp_power_level_t esp_ble_tx_power_get(esp_ble_power_type_t power_type)
{
return (esp_power_level_t)ble_txpwr_get(power_type);
}
#endif /* CONFIG_BT_ENABLED */
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