#define HIGH_VAL_8BIT MAX_F_BIT(8)

根据你提供的代码，`HIGH_VAL_8BIT` 被定义为 `MAX_F_BIT(8)`。这表示 `HIGH_VAL_8BIT` 的值是 `MAX_F_BIT` 函数的返回值，该函数接受参数 `8`。

要了解 `HIGH_VAL_8BIT` 的具体值，我们需要查看 `MAX_F_BIT` 函数的定义或上下文中关于该函数的信息。`MAX_F_BIT` 函数可能是一个宏或函数，它可能被用来计算给定位数的二进制位所能表示的最大值。在这种情况下，`MAX_F_BIT(8)` 可能返回表示 8 位二进制位最大值的某个常量或表达式。

相关问题

如何将以下代码移植到BL618-G0中// 包含头文件 #include "stm32f10x.h" #include "delay.h" #include "FSR.h" #include "usart.h" #include "adc.h" // 定义常量 #define PRESS_MIN 20 #define PRESS_MAX 6000 #define VOLTAGE_MIN 150 #define VOLTAGE_MAX 3300 // 定义变量 u8 state = 0; u16 val = 0; u16 value_AD = 0; long PRESS_AO = 0; int VOLTAGE_AO = 0; // 声明函数 long map(long x, long in_min, long in_max, long out_min, long out_max); int main(void) { // 初始化延时函数 delay_init(); // 配置NVIC NVIC_Configuration(); // 初始化串口 uart_init(9600); // 初始化ADC Adc_Init(); delay_ms(1000); printf("Test start\r\n"); while(1) { // 获取ADC采样值 value_AD = Get_Adc_Average(1,10); // 转换为电压值 VOLTAGE_AO = map(value_AD, 0, 4095, 0, 3300); if(VOLTAGE_AO < VOLTAGE_MIN) { PRESS_AO = 0; } else if(VOLTAGE_AO > VOLTAGE_MAX) { PRESS_AO = PRESS_MAX; } else { // 根据电压值计算压力值 PRESS_AO = map(VOLTAGE_AO, VOLTAGE_MIN, VOLTAGE_MAX, PRESS_MIN, PRESS_MAX); } // 输出结果 printf("ADÖµ = %d,µçѹ = %d mv,ѹÁ¦ = %ld g\r\n",value_AD,VOLTAGE_AO,PRESS_AO); // 延时500ms delay_ms(500); } } // 实现map函数 long map(long x, long in_min, long in_max, long out_min, long out_max) { return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; }

BL618-G0是一款基于Arm Cortex-M3内核的低功耗无线SoC，它的硬件结构和STM32F10x有所不同，因此需要对代码进行相应的修改和适配。

首先需要根据BL618-G0的硬件结构和引脚分配，重新定义头文件和常量：

#include "bl_mcu_sdk.h"
#include "bl_gpio.h"
#include "bl_adc.h"
#include "bl_uart.h"
#include "bl_delay.h"

#define PRESS_MIN 20
#define PRESS_MAX 6000
#define VOLTAGE_MIN 150
#define VOLTAGE_MAX 3300

接着需要修改主函数中的一些部分，比如将NVIC配置函数删除，因为BL618-G0不需要进行NVIC中断配置。需要将串口初始化函数和ADC初始化函数改为BL618-G0的初始化函数，并且将printf语句中的\r\n改为BL618-G0的换行符：

int main(void)
{
    // 初始化延时函数
    bl_delay_init();
    
    // 初始化串口
    bl_uart_init(0, 9600, UART_BITWIDTH_8BIT, UART_STOP_BIT_1, UART_PARITY_DISABLE);

    // 初始化ADC
    bl_adc_init(ADC_CLK_DIV_2, ADC_RESOLUTION_12BIT, ADC_SCALE_4096, ADC_INPUT_MODE_SINGLE, ADC_ATVCC);

    bl_delay_ms(1000);
    bl_uart_printf("Test start\n");

    while(1)
    {
        // 获取ADC采样值
        uint16_t value_AD = bl_adc_single_get_value(ADC_0, ADC_CHANNEL_1);

        // 转换为电压值
        int VOLTAGE_AO = map(value_AD, 0, 4095, 0, 3300);

        if(VOLTAGE_AO < VOLTAGE_MIN)
        {
            PRESS_AO = 0;
        }
        else if(VOLTAGE_AO > VOLTAGE_MAX)
        {
            PRESS_AO = PRESS_MAX;
        }
        else
        {
            // 根据电压值计算压力值
            PRESS_AO = map(VOLTAGE_AO, VOLTAGE_MIN, VOLTAGE_MAX, PRESS_MIN, PRESS_MAX);
        }

        // 输出结果
        bl_uart_printf("AD value = %d, voltage = %d mV, pressure = %ld g\n", value_AD, VOLTAGE_AO, PRESS_AO);

        // 延时500ms
        bl_delay_ms(500);
    }
}

最后需要保留实现map函数的代码，并且在程序开头添加函数声明：

long map(long x, long in_min, long in_max, long out_min, long out_max);

完整的代码如下：

#include "bl_mcu_sdk.h"
#include "bl_gpio.h"
#include "bl_adc.h"
#include "bl_uart.h"
#include "bl_delay.h"

#define PRESS_MIN 20
#define PRESS_MAX 6000
#define VOLTAGE_MIN 150
#define VOLTAGE_MAX 3300

long map(long x, long in_min, long in_max, long out_min, long out_max);

int main(void)
{
    // 初始化延时函数
    bl_delay_init();
    
    // 初始化串口
    bl_uart_init(0, 9600, UART_BITWIDTH_8BIT, UART_STOP_BIT_1, UART_PARITY_DISABLE);

    // 初始化ADC
    bl_adc_init(ADC_CLK_DIV_2, ADC_RESOLUTION_12BIT, ADC_SCALE_4096, ADC_INPUT_MODE_SINGLE, ADC_ATVCC);

    bl_delay_ms(1000);
    bl_uart_printf("Test start\n");

    while(1)
    {
        // 获取ADC采样值
        uint16_t value_AD = bl_adc_single_get_value(ADC_0, ADC_CHANNEL_1);

        // 转换为电压值
        int VOLTAGE_AO = map(value_AD, 0, 4095, 0, 3300);

        if(VOLTAGE_AO < VOLTAGE_MIN)
        {
            PRESS_AO = 0;
        }
        else if(VOLTAGE_AO > VOLTAGE_MAX)
        {
            PRESS_AO = PRESS_MAX;
        }
        else
        {
            // 根据电压值计算压力值
            PRESS_AO = map(VOLTAGE_AO, VOLTAGE_MIN, VOLTAGE_MAX, PRESS_MIN, PRESS_MAX);
        }

        // 输出结果
        bl_uart_printf("AD value = %d, voltage = %d mV, pressure = %ld g\n", value_AD, VOLTAGE_AO, PRESS_AO);

        // 延时500ms
        bl_delay_ms(500);
    }
}

long map(long x, long in_min, long in_max, long out_min, long out_max)
{
    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

esp32 蓝牙启动流程_ESP32教你简单进行蓝牙串口调试

ESP32的蓝牙启动流程如下：

1. 初始化蓝牙协议栈

2. 配置蓝牙参数，如设备名称、服务UUID等

3. 注册蓝牙事件回调函数

4. 启动蓝牙广播

5. 开启蓝牙可见性

6. 等待连接

以下是一个简单的ESP32蓝牙串口调试的示例：

#include "esp_bt.h"
#include "esp_bt_main.h"
#include "esp_gap_ble_api.h"

#define GATTS_TAG "GATTS_DEMO"
#define TEST_DEVICE_NAME "ESP32_BLE_UART"
#define TEST_MANUFACTURER_DATA_LEN 17

/* The max length of characteristic value. When the gatt client write or prepare write,
*  the data length must be less than MAX_VALUE_LENGTH.
*/
#define MAX_VALUE_LENGTH 500

/* Declare global variable */
static uint8_t test_manufacturer[TEST_MANUFACTURER_DATA_LEN] = {0x4c, 0x00, 0x02, 0x15, 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, 0xA1, 0x2F, 0x17, 0xD1, 0xAD};
static uint8_t test_service_uuid128[32] = {
    /* LSB <--------------------------------------------------------------------------------> MSB */
    //first uuid, 16bit, [12],[13] is the value
    0x13, 0x2B, 0x01, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB,
    //second uuid, 32bit, [12], [13], [14], [15] is the value
    0x14, 0x2B, 0x01, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB,
};

static uint8_t test_service_uuid[16] = {
    /* LSB <--------------------------------------------------------------------------------> MSB */
    //first uuid, 16bit, [12],[13] is the value
    0x01, 0x2B,
    //second uuid, 32bit, [12], [13], [14], [15] is the value
    0x01, 0x2B, 0x01, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB,
};

static uint8_t test_char_uuid[16] = {
    /* LSB <--------------------------------------------------------------------------------> MSB */
    //first uuid, 16bit, [12],[13] is the value
    0x02, 0x2B,
    //second uuid, 32bit, [12], [13], [14], [15] is the value
    0x02, 0x2B, 0x01, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB,
};

static esp_gatt_char_prop_t test_property = 0;

static uint8_t char1_str[] = {0x11,0x22,0x33};
static esp_attr_value_t gatts_demo_char1_val = {
    .attr_max_len = MAX_VALUE_LENGTH,
    .attr_len     = sizeof(char1_str),
    .attr_value   = char1_str,
};

static uint16_t gatts_demo_handle_table[3];

/* Full Database Description - Used to add attributes into the database */
static const esp_gatts_attr_db_t gatt_db[HRS_IDX_NB] =
{
    // Service Declaration
    [IDX_SVC]        =
    {
        {ESP_GATT_AUTO_RSP},
        {ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid, ESP_GATT_PERM_READ,
            sizeof(test_service_uuid), sizeof(test_service_uuid), (uint8_t *)&test_service_uuid},
        ESP_GATT_UUID_PRI_SERVICE,
        ESP_GATT_PERM_READ,
        sizeof(test_service_uuid),
        sizeof(test_service_uuid),
        (uint8_t *)&test_service_uuid,
        0
    },
    /* Characteristic Declaration */
    [IDX_CHAR_READ]  =
    {
        {ESP_GATT_AUTO_RSP},
        {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ,
            CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&test_property},
        ESP_GATT_UUID_CHAR_DECLARE,
        ESP_GATT_PERM_READ,
        CHAR_DECLARATION_SIZE,
        CHAR_DECLARATION_SIZE,
        (uint8_t *)&test_property,
        0
    },
    /* Characteristic Value */
    [IDX_CHAR_VAL_READ] =
    {
        {ESP_GATT_AUTO_RSP},
        {ESP_UUID_LEN_128, (uint8_t *)&test_char_uuid, ESP_GATT_PERM_READ,
            MAX_VALUE_LENGTH, sizeof(gatts_demo_char1_val), gatts_demo_char1_val.attr_value},
        ESP_UUID_LEN_128,
        ESP_GATT_PERM_READ,
        MAX_VALUE_LENGTH,
        sizeof(gatts_demo_char1_val),
        gatts_demo_char1_val.attr_value,
        0
    },
};

static esp_ble_adv_data_t adv_data = {
    .set_scan_rsp        = false,
    .include_name        = true,
    .include_txpower     = true,
    .min_interval        = 0x20,
    .max_interval        = 0x40,
    .appearance          = 0x00,
    .manufacturer_len    = TEST_MANUFACTURER_DATA_LEN,
    .p_manufacturer_data = test_manufacturer,
    .service_data_len    = 0,
    .p_service_data      = NULL,
    .service_uuid_len    = sizeof(test_service_uuid),
    .p_service_uuid      = test_service_uuid,
    .flag = (ESP_BLE_ADV_FLAG_GEN_DISC | ESP_BLE_ADV_FLAG_BREDR_NOT_SPT),
};

static esp_ble_adv_params_t adv_params = {
    .adv_int_min         = 0x20,
    .adv_int_max         = 0x40,
    .adv_type            = ADV_TYPE_IND,
    .own_addr_type       = BLE_ADDR_TYPE_PUBLIC,
    .peer_addr           = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    .peer_addr_type      = BLE_ADDR_TYPE_PUBLIC,
    .channel_map         = ADV_CHNL_ALL,
    .adv_filter_policy   = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
};

static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
{
    switch (event) {
    case ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT:
        esp_ble_gap_start_advertising(&adv_params);
        break;
    case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
        if (param->adv_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
            ESP_LOGE(GATTS_TAG, "advertising start failed");
        }
        break;
    default:
        break;
    }
}

static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param)
{
    switch (event) {
    case ESP_GATTS_REG_EVT:
        esp_ble_gap_set_device_name(TEST_DEVICE_NAME);
        esp_ble_gap_config_adv_data(&adv_data);
        break;
    case ESP_GATTS_CREAT_ATTR_TAB_EVT:
        if (param->add_attr_tab.status != ESP_GATT_OK){
            ESP_LOGE(GATTS_TAG, "create attribute table failed, error code=0x%x", param->add_attr_tab.status);
        }
        else if (param->add_attr_tab.num_handle != HRS_IDX_NB) {
            ESP_LOGE(GATTS_TAG, "create attribute table abnormally, num_handle (%d) \
                    doesn't equal to HRS_IDX_NB(%d)", param->add_attr_tab.num_handle, HRS_IDX_NB);
        }
        else {
            ESP_LOGI(GATTS_TAG, "create attribute table successfully, the number handle = %d\n",param->add_attr_tab.num_handle);
            memcpy(gatts_demo_handle_table, param->add_attr_tab.handles, sizeof(gatts_demo_handle_table));
            esp_ble_gatts_start_service(gatts_demo_handle_table[IDX_SVC]);
        }
        break;
    case ESP_GATTS_CONNECT_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_CONNECT_EVT");
        break;
    case ESP_GATTS_DISCONNECT_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_DISCONNECT_EVT");
        esp_ble_gap_start_advertising(&adv_params);
        break;
    case ESP_GATTS_WRITE_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_WRITE_EVT");
        break;
    case ESP_GATTS_MTU_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_MTU_EVT, MTU %d", param->mtu.mtu);
        break;
    case ESP_GATTS_CONF_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_CONF_EVT");
        break;
    case ESP_GATTS_EXEC_WRITE_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_EXEC_WRITE_EVT");
        break;
    case ESP_GATTS_START_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_START_EVT");
        break;
    case ESP_GATTS_STOP_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_STOP_EVT");
        break;
    case ESP_GATTS_OPEN_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_OPEN_EVT");
        break;
    case ESP_GATTS_CANCEL_OPEN_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_CANCEL_OPEN_EVT");
        break;
    case ESP_GATTS_CLOSE_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_CLOSE_EVT");
        break;
    case ESP_GATTS_LISTEN_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_LISTEN_EVT");
        break;
    case ESP_GATTS_CONGEST_EVT:
        ESP_LOGI(GATTS_TAG, "ESP_GATTS_CONGEST_EVT");
        break;
    case ESP_GATTS_UNREG_EVT:
    case ESP_GATTS_DELETE_EVT:
    default:
        break;
    }
}

void app_main()
{
    esp_err_t ret;

    ESP_LOGI(GATTS_TAG, "ESP_BLUETOOTH_BLE example started.");

    esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
    ret = esp_bt_controller_init(&bt_cfg);
    if (ret) {
        ESP_LOGE(GATTS_TAG, "%s initialize controller failed\n", __func__);
        return;
    }

    ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
    if (ret) {
        ESP_LOGE(GATTS_TAG, "%s enable controller failed\n", __func__);
        return;
    }

    ret = esp_bluedroid_init();
    if (ret) {
        ESP_LOGE(GATTS_TAG, "%s init bluetooth failed\n", __func__);
        return;
    }

    ret = esp_bluedroid_enable();
    if (ret) {
        ESP_LOGE(GATTS_TAG, "%s enable bluetooth failed\n", __func__);
        return;
    }

    ret = esp_ble_gatts_register_callback(gatts_event_handler);
    if (ret){
        ESP_LOGE(GATTS_TAG, "gatts register error, error code = %x", ret);
        return;
    }

    ret = esp_ble_gap_register_callback(gap_event_handler);
    if (ret){
        ESP_LOGE(GATTS_TAG, "gap register error, error code = %x", ret);
        return;
    }

    ret = esp_ble_gatts_app_register(ESP_APP_ID);
    if (ret){
        ESP_LOGE(GATTS_TAG, "gatts app register error, error code = %x", ret);
        return;
    }

    esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500);
    if (local_mtu_ret){
        ESP_LOGE(GATTS_TAG, "set local  MTU failed, error code = %x", local_mtu_ret);
    }

    ret = esp_ble_gatts_create_attr_tab(gatt_db, gatts_if, HRS_IDX_NB, ESP_APP_ID);
    if (ret){
        ESP_LOGE(GATTS_TAG, "create attr table failed, error code = %x", ret);
    }
}

在这个示例中，我们使用了ESP-IDF提供的蓝牙协议栈和GATT Server框架，实现了一个简单的GATT Server，并且开启了蓝牙广播和可见性，使得其他蓝牙设备可以扫描到并连接我们的设备。在连接建立后，我们可以向GATT Server中的特定Characteristic写入数据，也可以从特定Characteristic读取数据。