電子積木(4)buzzer 蜂鳴器

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就只是一顆台幣兩塊錢的小喇叭有什麼好介紹的?是的。筆者直接貼上驅動程式,及影片。而介紹的部份筆者有空再來增刪修。並且此處的程式部份及所使用的硬體板子都是有專用目的的,故是該再修而筆者當前也沒打算詳述。但就 buzzer 的驅動程式部份,是通用可用的,有興趣的讀者可摘錄使用。

程式碼之控制改為 URI 操作:
/test/alert on/off 交替切換,展示 buzzer
/speed/alert 交替開關轉速警示
/speed 回傳轉速
/relay/on 取代 AC
/relay/off bypass
/ac/on 取代 AC 下,啟動 AC
/ac/off 取代 AC 下,關閉 AC
/speed/error 回傳錯誤超轉的計數

另外由此程式的展示亦可得知,若啟動 WiFi,並且有用戶端連上,將會影響 buzzer 的效能,不論用戶端是否有在收送資料;亦即,client service 將佔用可觀的 CPU 時間。

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <ESP8266HTTPUpdateServer.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266httpUpdate.h>

#include"Esp8266MultiPwms.h"




String theSpeedStr="0";
unsigned speed_alert_flag=0, test_alert_flag=0, period5_err=0;




#define AP_MODE_MYSSID      "ESP_TESTAP"
#define AP_MODE_MYPW        "87654321"


#if 0
    #define STA_MODE_SSID    "--------"
    #define STA_MODE_PW      "--------"
#else
    #define STA_MODE_SSID    AP_MODE_MYSSID
    #define STA_MODE_PW      AP_MODE_MYPW
#endif


const char *const WIFI_CRED[][2]={ // along with USE_STA_WIFI_MULTI since STA has more than 1 AP to connect to.
    {"ESP_TESTAP", "87654321"},
    {"Office", "123456"},
    {"Xperia X Performance_bc10", "e848acbcfd98"},
};


// use either of one
#define HTTP_SERVER 1
#define HTTP_CLIENT (!HTTP_SERVER)


// use either of one
#define AP_MODE 1
#define STA_MODE (!AP_MODE)


// use either of one
//#define USE_STA_NATIVE
#define USE_STA_WIFI_MULTI


// use either of one
//#define USE_HTTP_HTTP_CLIENT
//#define USE_HTTP_WIFI_CLIENT
#define USE_HTTP_WIFIHTTP_HYBRID


#define HOSTNAME "esp8266-iot" // i.e., http://esp8266-iot.local/
#define UPDFILE "a.bin" // the facility has no version check, so should do it by user.
// the local webpage for updating to local is http://HOSTNAME.local/update
// local updated from remote is http://HOSTNAME.local/upd. when connected to, the UPDFILE will transfer back.




#if defined(USE_STA_WIFI_MULTI)
ESP8266WiFiMulti *WiFiMulti=0;
#endif

Stream &ehConsolePort(Serial);

// for http server
ESP8266WebServer *server_p;

// for remote ip
char remote_ip[16] = {0};

// for url
String web_link;

// for station mode is entered
bool is_station_entered=false;

// webupdater
ESP8266HTTPUpdateServer httpUpdater;




// ==================================================================
const char * const RST_REASONS[] =
{
    "REASON_DEFAULT_RST",
    "REASON_WDT_RST",
    "REASON_EXCEPTION_RST",
    "REASON_SOFT_WDT_RST",
    "REASON_SOFT_RESTART",
    "REASON_DEEP_SLEEP_AWAKE",
    "REASON_EXT_SYS_RST"
};

const char * const FLASH_SIZE_MAP_NAMES[] =
{
    "FLASH_SIZE_4M_MAP_256_256",
    "FLASH_SIZE_2M",
    "FLASH_SIZE_8M_MAP_512_512",
    "FLASH_SIZE_16M_MAP_512_512",
    "FLASH_SIZE_32M_MAP_512_512",
    "FLASH_SIZE_16M_MAP_1024_1024",
    "FLASH_SIZE_32M_MAP_1024_1024"
};

const char * const OP_MODE_NAMES[] 
{
    "NULL_MODE",
    "STATION_MODE",
    "SOFTAP_MODE",
    "STATIONAP_MODE"
};

const char * const AUTH_MODE_NAMES[] 
{
    "AUTH_OPEN",
    "AUTH_WEP",
    "AUTH_WPA_PSK",
    "AUTH_WPA2_PSK",
    "AUTH_WPA_WPA2_PSK",
    "AUTH_MAX"
};

const char * const PHY_MODE_NAMES[]
{
    "",
    "PHY_MODE_11B",
    "PHY_MODE_11G",
    "PHY_MODE_11N"
};

const char * const EVENT_NAMES[]
{
    "EVENT_STAMODE_CONNECTED",
    "EVENT_STAMODE_DISCONNECTED",
    "EVENT_STAMODE_AUTHMODE_CHANGE",
    "EVENT_STAMODE_GOT_IP",
    "EVENT_SOFTAPMODE_STACONNECTED",
    "EVENT_SOFTAPMODE_STADISCONNECTED",
    "EVENT_MAX"
};

const char * const EVENT_REASONS[]
{
    "",
    "REASON_UNSPECIFIED",
    "REASON_AUTH_EXPIRE",
    "REASON_AUTH_LEAVE",
    "REASON_ASSOC_EXPIRE",
    "REASON_ASSOC_TOOMANY",
    "REASON_NOT_AUTHED",
    "REASON_NOT_ASSOCED",
    "REASON_ASSOC_LEAVE",
    "REASON_ASSOC_NOT_AUTHED",
    "REASON_DISASSOC_PWRCAP_BAD",
    "REASON_DISASSOC_SUPCHAN_BAD",
    "REASON_IE_INVALID",
    "REASON_MIC_FAILURE",
    "REASON_4WAY_HANDSHAKE_TIMEOUT",
    "REASON_GROUP_KEY_UPDATE_TIMEOUT",
    "REASON_IE_IN_4WAY_DIFFERS",
    "REASON_GROUP_CIPHER_INVALID",
    "REASON_PAIRWISE_CIPHER_INVALID",
    "REASON_AKMP_INVALID",
    "REASON_UNSUPP_RSN_IE_VERSION",
    "REASON_INVALID_RSN_IE_CAP",
    "REASON_802_1X_AUTH_FAILED",
    "REASON_CIPHER_SUITE_REJECTED",
};


void print_system_info(Stream & consolePort)
{
    const rst_info * resetInfo = system_get_rst_info();
    consolePort.print(F("system_get_rst_info() reset reason: "));
    consolePort.println(RST_REASONS[resetInfo->reason]);

    consolePort.print(F("system_get_free_heap_size(): "));
    consolePort.println(system_get_free_heap_size());

    consolePort.print(F("system_get_os_print(): "));
    consolePort.println(system_get_os_print());
    system_set_os_print(1);
    consolePort.print(F("system_get_os_print(): "));
    consolePort.println(system_get_os_print());

    consolePort.print(F("system_print_meminfo(): "));
    consolePort.println(system_get_os_print());
    system_print_meminfo();

    consolePort.print(F("system_get_chip_id(): 0x"));
    consolePort.println(system_get_chip_id(), HEX);

    consolePort.print(F("system_get_sdk_version(): "));
    consolePort.println(system_get_sdk_version());

    consolePort.print(F("system_get_boot_version(): "));
    consolePort.println(system_get_boot_version());

    consolePort.print(F("system_get_userbin_addr(): 0x"));
    consolePort.println(system_get_userbin_addr(), HEX);

    consolePort.print(F("system_get_boot_mode(): "));
    consolePort.println(system_get_boot_mode() == 0 ? F("SYS_BOOT_ENHANCE_MODE") : F("SYS_BOOT_NORMAL_MODE"));

    consolePort.print(F("system_get_cpu_freq(): "));
    consolePort.println(system_get_cpu_freq());

    consolePort.print(F("spi_flash_get_id(): 0x"));
    consolePort.println(spi_flash_get_id(), HEX);

    consolePort.print(F("system_get_flash_size_map(): "));
    consolePort.println(FLASH_SIZE_MAP_NAMES[system_get_flash_size_map()]);
}


void pre_setup(){

    print_system_info(Serial);

    // Try pushing frequency to 160MHz.
    system_update_cpu_freq(SYS_CPU_160MHZ);

    // System usually boots up in about 200ms.
    Serial.print(F("system_get_time(): "));
    Serial.println(system_get_time());

    Serial.print(F("system_get_cpu_freq(): "));
    Serial.println(system_get_cpu_freq());

    Serial.print(F("wifi_get_opmode(): "));
    Serial.print(wifi_get_opmode());
    Serial.print(F(" - "));
    Serial.println(OP_MODE_NAMES[wifi_get_opmode()]);

    Serial.print(F("wifi_get_opmode_default(): "));
    Serial.print(wifi_get_opmode_default());
    Serial.print(F(" - "));
    Serial.println(OP_MODE_NAMES[wifi_get_opmode_default()]);

    Serial.print(F("wifi_get_broadcast_if(): "));
    Serial.println(wifi_get_broadcast_if());
}


void post_setup(){
    Serial.printf("getResetReason: %s\r\n",         ESP.getResetReason().c_str());
    Serial.printf("getFreeHeap: %d\r\n",            ESP.getFreeHeap());
    Serial.printf("getChipId: %d\r\n",              ESP.getChipId());
    Serial.printf("getCoreVersion: %s\r\n",         ESP.getCoreVersion().c_str());
    Serial.printf("getSdkVersion: %s\r\n",          ESP.getSdkVersion());
    Serial.printf("getCpuFreqMHz: %u\r\n",          ESP.getCpuFreqMHz());
    Serial.printf("getSketchSize: %u\r\n",          ESP.getSketchSize());
    Serial.printf("getFreeSketchSpace: %u\r\n",     ESP.getFreeSketchSpace());
    Serial.printf("getSketchMD5: %s\r\n",           ESP.getSketchMD5().c_str());
    Serial.printf("getFlashChipId: %d\r\n",         ESP.getFlashChipId());
    Serial.printf("getFlashChipSize: %u\r\n",       ESP.getFlashChipSize());
    Serial.printf("getFlashChipRealSize: %u\r\n",   ESP.getFlashChipRealSize());
    Serial.printf("getFlashChipSpeed: %u\r\n",      ESP.getFlashChipSpeed());
    Serial.printf("getCycleCount: %u\r\n",          ESP.getCycleCount());
    ////Serial.printf("getVcc: %d\r\n",                 ESP.getVcc()); // can not be used if ADC is used.
}


// callback function for wifi auto-messages
void wifi_event_handler_cb(System_Event_t * event)
{
    if (int(event->event)>=7) return;

    if (event->event<sizeof(EVENT_NAMES)/sizeof(EVENT_NAMES[0]))
        Serial.print(EVENT_NAMES[event->event]);
    Serial.print(" [wifi_auto_info] (");
    
    switch (event->event)
    {
        case EVENT_STAMODE_CONNECTED:
            break;
        case EVENT_STAMODE_DISCONNECTED:
            break;
        case EVENT_STAMODE_AUTHMODE_CHANGE:
            break;
        case EVENT_STAMODE_GOT_IP:
            break;
        case EVENT_SOFTAPMODE_STACONNECTED:
        case EVENT_SOFTAPMODE_STADISCONNECTED:
            {
                char mac[32] = {0};
                snprintf(mac, 32, MACSTR ", aid: %d" , MAC2STR(event->event_info.sta_connected.mac), event->event_info.sta_connected.aid);
                
                Serial.print(mac);
            }
            break;
        default:
            Serial.print(int(event->event));
    }

    Serial.println(")");
}


void print_softap_config(Stream &consolePort, softap_config const &config)
{
    consolePort.println();
    consolePort.println(F("SoftAP Configuration"));
    consolePort.println(F("--------------------"));

    consolePort.print(F("ssid:            "));
    consolePort.println((char *) config.ssid);

    consolePort.print(F("password:        "));
    consolePort.println((char *) config.password);

    consolePort.print(F("ssid_len:        "));
    consolePort.println(config.ssid_len);

    consolePort.print(F("channel:         "));
    consolePort.println(config.channel);

    consolePort.print(F("authmode:        "));
    consolePort.println(AUTH_MODE_NAMES[config.authmode]);

    consolePort.print(F("ssid_hidden:     "));
    consolePort.println(config.ssid_hidden);

    consolePort.print(F("max_connection:  "));
    consolePort.println(config.max_connection);

    consolePort.print(F("beacon_interval: "));
    consolePort.print(config.beacon_interval);
    consolePort.println("ms");

    consolePort.println(F("--------------------"));
    consolePort.println();
}


void print_wifi_general(Stream &consolePort)
{
    consolePort.print(F("wifi_get_channel(): "));
    consolePort.println(wifi_get_channel());
    
    consolePort.print(F("wifi_get_phy_mode(): "));
    consolePort.println(PHY_MODE_NAMES[wifi_get_phy_mode()]);
}


void secure_softap_config(softap_config *config, const char *ssid, const char *password)
{ // hidden mode
    // it tests if new data size over the storage and truncates.
    size_t ssidLen     = strlen(ssid)     < sizeof(config->ssid)     ? strlen(ssid)     : sizeof(config->ssid);
    size_t passwordLen = strlen(password) < sizeof(config->password) ? strlen(password) : sizeof(config->password);

    memset(config->ssid, 0, sizeof(config->ssid));
    memcpy(config->ssid, ssid, ssidLen);

    memset(config->password, 0, sizeof(config->password));
    memcpy(config->password, password, passwordLen);

    config->ssid_len = ssidLen;
    config->channel  = 1;
    config->authmode = AUTH_WPA2_PSK;
    config->ssid_hidden = 1;
    config->max_connection = 4;
    config->beacon_interval = 1000;
}


void enter_ap_mode(){
    WiFi.softAP(AP_MODE_MYSSID, AP_MODE_MYPW);
    IPAddress myIP = WiFi.softAPIP();

    Serial.println("");
    Serial.println("[-= Enter AP Mode =-]");
    Serial.print("AP IP ADDR: ");
    Serial.println(myIP);

    // get the default config and print it.
    softap_config config;
    wifi_softap_get_config(&config);
    /// if want to be more secure(hidden), modify the configurations.
    /// secure_softap_config(&config, AP_MODE_MYSSID, AP_MODE_MYPW);
    /// after config is arranged, set it in.
    /// wifi_softap_set_config(&config);
    print_softap_config(Serial, config);

    print_wifi_general(Serial);

    // start dhcps
    wifi_softap_dhcps_start();
    if (wifi_softap_dhcps_status()==DHCP_STARTED) Serial.println(F("DHCP started"));
    else Serial.println(F("DHCP stopped"));

    // get the AP basic info and print it.
    ip_info info;
    wifi_get_ip_info(SOFTAP_IF, &info);

    /// method 1
    /// Serial.printf("AP IP ADDR: %3d.%3d.%3d.%3d\r\n", ip4_addr1(&info.ip), ip4_addr2(&info.ip), ip4_addr3(&info.ip), ip4_addr4(&info.ip));
    /// Serial.printf("AP GATEWAY: %3d.%3d.%3d.%3d\r\n", ip4_addr1(&info.gw), ip4_addr2(&info.gw), ip4_addr3(&info.gw), ip4_addr4(&info.gw));
    /// Serial.printf("AP NETMASK: %3d.%3d.%3d.%3d\r\n", ip4_addr1(&info.netmask), ip4_addr2(&info.netmask), ip4_addr3(&info.netmask), ip4_addr4(&info.netmask));

    // method2
    Serial.printf("AP IP ADDR: " IPSTR "\r\n", IP2STR(&info.ip));
    Serial.printf("AP GATEWAY: " IPSTR "\r\n", IP2STR(&info.gw));
    Serial.printf("AP NETMASK: " IPSTR "\r\n", IP2STR(&info.netmask));

    // This doesn't work on an ESP-01.
    // wifi_set_sleep_type(LIGHT_SLEEP_T);
    // Try this dirty little thing.
    // Doesn't work because ESP-01 module doesn't link XPD_DCDC -> RST.
    // ESP.deepSleep(15000);
}


int connected_station_status(){

    ///// this function for count couldn't sync the number of stat_infos retrieved at realtime.
    unsigned char number_client=wifi_softap_get_station_num(); // Count of stations

    struct station_info *stat_info;
    IPAddress address;
    int i;

    Serial.print("Total connected clients: ");
    Serial.println(number_client);

    for (i=0, stat_info=wifi_softap_get_station_info(); stat_info!=NULL && i<number_client; i++){
        address=(stat_info->ip).addr;

        snprintf(remote_ip, 16, "" IPSTR, IP2STR(&(stat_info->ip)));

        Serial.printf("Station %d. ", i+1);
        Serial.print("IP= ");
        Serial.print(address);
        Serial.print(" with MAC= ");
        Serial.print(stat_info->bssid[0],HEX);
        Serial.print(stat_info->bssid[1],HEX);
        Serial.print(stat_info->bssid[2],HEX);
        Serial.print(stat_info->bssid[3],HEX);
        Serial.print(stat_info->bssid[4],HEX);
        Serial.print(stat_info->bssid[5],HEX);
        Serial.println();

        stat_info = STAILQ_NEXT(stat_info, next);
    }
    wifi_softap_free_station_info();
    delay(100);
    return i; // not the number_client
}


#if defined(USE_STA_NATIVE) // --------------------------
// 12 seconds waiting
bool enter_station_mode(){
    unsigned char u=0;
    
    // Connect to WiFi network
    Serial.println("");
    Serial.println("[-= Enter Station Mode =-]");
    Serial.print("Connecting to ");
    Serial.print(STA_MODE_SSID);

    WiFi.mode(WIFI_STA);
    WiFi.begin(STA_MODE_SSID, STA_MODE_PW);
    
    while (WiFi.status() != WL_CONNECTED) {
        delay(200);
        Serial.print(".");
        if (u++>60) break; // 12 seconds, might not enough
    }
    Serial.println("");
    if (WiFi.status() != WL_CONNECTED){
        Serial.println(" WiFi connection failed...");
        return false;
    }
    Serial.println("WiFi connected");

    // Print the remote MAC address
    uint8_t macAddr[6];
    WiFi.macAddress(macAddr);
    Serial.printf("Remote MAC adr: %02X:%02X:%02X:%02X:%02X:%02X\r\n", macAddr[0], macAddr[1], macAddr[2], macAddr[3], macAddr[4], macAddr[5]);
    
    ip_info info;
    wifi_get_ip_info(STATION_IF, &info);
    Serial.printf("IP ADDR: " IPSTR "\r\n", IP2STR(&info.ip));
    Serial.printf("GATEWAY: " IPSTR "\r\n", IP2STR(&info.gw));
    Serial.printf("NETMASK: " IPSTR "\r\n", IP2STR(&info.netmask));

    // resolve the remote ip
    uint32 x=*(uint32*)(&info.ip)&*(uint32*)(&info.netmask);
    ip_addr y=*(ip_addr*)(&x);
    snprintf(remote_ip, 16, "%d.%d.%d.%d",\
        ip4_addr1(&y)? ip4_addr1(&y): 1,\
        ip4_addr2(&y)? ip4_addr2(&y): 1,\
        ip4_addr3(&y)? ip4_addr3(&y): 1,\
        ip4_addr4(&y)? ip4_addr4(&y): 1
        );
    Serial.print(F("Remote AP IP: "));
    Serial.println(remote_ip);

    Serial.printf("Default local hostname: %s\r\n", WiFi.hostname().c_str());
    Serial.print("DNS #1, #2 IP: ");
    WiFi.dnsIP().printTo(Serial);
    Serial.print(", ");
    WiFi.dnsIP(1).printTo(Serial);
    Serial.println();
    Serial.printf("RSSI: %d dBm\r\n", WiFi.RSSI());
    WiFi.printDiag(Serial);
    
    // Print the local IP address
    Serial.println("");
    Serial.print("IP is assigned: ");
    Serial.println(WiFi.localIP());
    return true;
}
#elif defined(USE_STA_WIFI_MULTI) // --------------------------
// 12 seconds waiting
bool enter_station_mode(){
    unsigned char u=0;

    // Connect to WiFi network
    Serial.println("");
    Serial.println("[-= Enter Station Mode =-]");
    Serial.print("WiFi Connecting...");

    WiFi.mode(WIFI_STA);
    if (!WiFiMulti){
        WiFiMulti=new ESP8266WiFiMulti;
        if (!WiFiMulti) return false;
        for (int i=0; i<(sizeof(WIFI_CRED)/sizeof(WIFI_CRED[0])); i++)
            WiFiMulti->addAP(WIFI_CRED[i][0], WIFI_CRED[i][1]);
    }

    while (WiFiMulti->run() != WL_CONNECTED) {
        delay(200);
        Serial.print(".");
        if (u++>60){ // 12 seconds, might not enough
            Serial.println(" WiFi connection failed...");
            return false;
        }
    }
    Serial.println("WiFi connected");

    // Print the remote MAC address
    uint8_t macAddr[6];
    WiFi.macAddress(macAddr);
    Serial.printf("Remote MAC adr: %02X:%02X:%02X:%02X:%02X:%02X\r\n", macAddr[0], macAddr[1], macAddr[2], macAddr[3], macAddr[4], macAddr[5]);
    
    ip_info info;
    wifi_get_ip_info(STATION_IF, &info);
    Serial.printf("IP ADDR: " IPSTR "\r\n", IP2STR(&info.ip));
    Serial.printf("GATEWAY: " IPSTR "\r\n", IP2STR(&info.gw));
    Serial.printf("NETMASK: " IPSTR "\r\n", IP2STR(&info.netmask));

    // resolve the remote ip
    uint32 x=*(uint32*)(&info.ip)&*(uint32*)(&info.netmask);
    ip_addr y=*(ip_addr*)(&x);
    snprintf(remote_ip, 16, "%d.%d.%d.%d",\
        ip4_addr1(&y)? ip4_addr1(&y): 1,\
        ip4_addr2(&y)? ip4_addr2(&y): 1,\
        ip4_addr3(&y)? ip4_addr3(&y): 1,\
        ip4_addr4(&y)? ip4_addr4(&y): 1
        );
    Serial.print(F("Remote AP IP: "));
    Serial.println(remote_ip);

    Serial.printf("Default local hostname: %s\r\n", WiFi.hostname().c_str());
    Serial.print("DNS #1, #2 IP: ");
    WiFi.dnsIP().printTo(Serial);
    Serial.print(", ");
    WiFi.dnsIP(1).printTo(Serial);
    Serial.println();
    Serial.printf("RSSI: %d dBm\r\n", WiFi.RSSI());
    WiFi.printDiag(Serial);
    
    // Print the local IP address
    Serial.println("");
    Serial.print("IP is assigned: ");
    Serial.println(WiFi.localIP());
    return true;
}
#endif // USE_STA_x // --------------------------


// The certificate is stored in PMEM
static const uint8_t x509[] PROGMEM = {
  0x30, 0x82, 0x01, 0x3d, 0x30, 0x81, 0xe8, 0x02, 0x09, 0x00, 0xfe, 0x56,
  0x46, 0xf2, 0x78, 0xc6, 0x51, 0x17, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86,
  0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x30, 0x26, 0x31,
  0x10, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x07, 0x45, 0x53,
  0x50, 0x38, 0x32, 0x36, 0x36, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55,
  0x04, 0x03, 0x0c, 0x09, 0x31, 0x32, 0x37, 0x2e, 0x30, 0x2e, 0x30, 0x2e,
  0x31, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x37, 0x30, 0x33, 0x31, 0x38, 0x31,
  0x34, 0x34, 0x39, 0x31, 0x38, 0x5a, 0x17, 0x0d, 0x33, 0x30, 0x31, 0x31,
  0x32, 0x35, 0x31, 0x34, 0x34, 0x39, 0x31, 0x38, 0x5a, 0x30, 0x26, 0x31,
  0x10, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x07, 0x45, 0x53,
  0x50, 0x38, 0x32, 0x36, 0x36, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55,
  0x04, 0x03, 0x0c, 0x09, 0x31, 0x32, 0x37, 0x2e, 0x30, 0x2e, 0x30, 0x2e,
  0x31, 0x30, 0x5c, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
  0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x4b, 0x00, 0x30, 0x48, 0x02,
  0x41, 0x00, 0xc6, 0x72, 0x6c, 0x12, 0xe1, 0x20, 0x4d, 0x10, 0x0c, 0xf7,
  0x3a, 0x2a, 0x5a, 0x49, 0xe2, 0x2d, 0xc9, 0x7a, 0x63, 0x1d, 0xef, 0xc6,
  0xbb, 0xa3, 0xd6, 0x6f, 0x59, 0xcb, 0xd5, 0xf6, 0xbe, 0x34, 0x83, 0x33,
  0x50, 0x80, 0xec, 0x49, 0x63, 0xbf, 0xee, 0x59, 0x94, 0x67, 0x8b, 0x8d,
  0x81, 0x85, 0x23, 0x24, 0x06, 0x52, 0x76, 0x55, 0x9d, 0x18, 0x09, 0xb3,
  0x3c, 0x10, 0x40, 0x05, 0x01, 0xf3, 0x02, 0x03, 0x01, 0x00, 0x01, 0x30,
  0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b,
  0x05, 0x00, 0x03, 0x41, 0x00, 0x69, 0xdc, 0x6c, 0x9b, 0xa7, 0x62, 0x57,
  0x7e, 0x03, 0x01, 0x45, 0xad, 0x9a, 0x83, 0x90, 0x3a, 0xe7, 0xdf, 0xe8,
  0x8f, 0x46, 0x00, 0xd3, 0x5f, 0x2b, 0x0a, 0xde, 0x92, 0x1b, 0xc5, 0x04,
  0xc5, 0xc0, 0x76, 0xf4, 0xf6, 0x08, 0x36, 0x97, 0x27, 0x82, 0xf1, 0x60,
  0x76, 0xc2, 0xcd, 0x67, 0x6c, 0x4b, 0x6c, 0xca, 0xfd, 0x97, 0xfd, 0x33,
  0x9e, 0x12, 0x67, 0x6b, 0x98, 0x7e, 0xd5, 0x80, 0x8f
};

// And so is the key.  These could also be in DRAM
static const uint8_t rsakey[] PROGMEM = {
  0x30, 0x82, 0x01, 0x3a, 0x02, 0x01, 0x00, 0x02, 0x41, 0x00, 0xc6, 0x72,
  0x6c, 0x12, 0xe1, 0x20, 0x4d, 0x10, 0x0c, 0xf7, 0x3a, 0x2a, 0x5a, 0x49,
  0xe2, 0x2d, 0xc9, 0x7a, 0x63, 0x1d, 0xef, 0xc6, 0xbb, 0xa3, 0xd6, 0x6f,
  0x59, 0xcb, 0xd5, 0xf6, 0xbe, 0x34, 0x83, 0x33, 0x50, 0x80, 0xec, 0x49,
  0x63, 0xbf, 0xee, 0x59, 0x94, 0x67, 0x8b, 0x8d, 0x81, 0x85, 0x23, 0x24,
  0x06, 0x52, 0x76, 0x55, 0x9d, 0x18, 0x09, 0xb3, 0x3c, 0x10, 0x40, 0x05,
  0x01, 0xf3, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x40, 0x35, 0x0b, 0x74,
  0xd3, 0xff, 0x15, 0x51, 0x44, 0x0f, 0x13, 0x2e, 0x9b, 0x0f, 0x93, 0x5c,
  0x3f, 0xfc, 0xf1, 0x17, 0xf9, 0x72, 0x94, 0x5e, 0xa7, 0xc6, 0xb3, 0xf0,
  0xfe, 0xc9, 0x6c, 0xb1, 0x1e, 0x83, 0xb3, 0xc6, 0x45, 0x3a, 0x25, 0x60,
  0x7c, 0x3d, 0x92, 0x7d, 0x53, 0xec, 0x49, 0x8d, 0xb5, 0x45, 0x10, 0x99,
  0x9b, 0xc6, 0x22, 0x3a, 0x68, 0xc7, 0x13, 0x4e, 0xb6, 0x04, 0x61, 0x21,
  0x01, 0x02, 0x21, 0x00, 0xea, 0x8c, 0x21, 0xd4, 0x7f, 0x3f, 0xb6, 0x91,
  0xfa, 0xf8, 0xb9, 0x2d, 0xcb, 0x36, 0x36, 0x02, 0x5f, 0xf0, 0x0c, 0x6e,
  0x87, 0xaa, 0x5c, 0x14, 0xf6, 0x56, 0x8e, 0x12, 0x92, 0x25, 0xde, 0xb3,
  0x02, 0x21, 0x00, 0xd8, 0x99, 0x01, 0xf1, 0x04, 0x0b, 0x98, 0xa3, 0x71,
  0x56, 0x1d, 0xea, 0x6f, 0x45, 0xd1, 0x36, 0x70, 0x76, 0x8b, 0xab, 0x69,
  0x30, 0x58, 0x9c, 0xe0, 0x45, 0x97, 0xe7, 0xb6, 0xb5, 0xef, 0xc1, 0x02,
  0x21, 0x00, 0xa2, 0x01, 0x06, 0xc0, 0xf2, 0xdf, 0xbc, 0x28, 0x1a, 0xb4,
  0xbf, 0x9b, 0x5c, 0xd8, 0x65, 0xf7, 0xbf, 0xf2, 0x5b, 0x73, 0xe0, 0xeb,
  0x0f, 0xcd, 0x3e, 0xd5, 0x4c, 0x2e, 0x91, 0x99, 0xec, 0xb7, 0x02, 0x20,
  0x4b, 0x9d, 0x46, 0xd7, 0x3c, 0x01, 0x4c, 0x5d, 0x2a, 0xb0, 0xd4, 0xaa,
  0xc6, 0x03, 0xca, 0xa0, 0xc5, 0xac, 0x2c, 0xe0, 0x3f, 0x4d, 0x98, 0x71,
  0xd3, 0xbd, 0x97, 0xe5, 0x55, 0x9c, 0xb8, 0x41, 0x02, 0x20, 0x02, 0x42,
  0x9f, 0xd1, 0x06, 0x35, 0x3b, 0x42, 0xf5, 0x64, 0xaf, 0x6d, 0xbf, 0xcd,
  0x2c, 0x3a, 0xcd, 0x0a, 0x9a, 0x4d, 0x7c, 0xad, 0x29, 0xd6, 0x36, 0x57,
  0xd5, 0xdf, 0x34, 0xeb, 0x26, 0x03
};


#if 0
WiFiServer* create_http_server(){
    // Create an instance of the server
    // specify the 80 port to listen on as an argument
    WiFiServer *a=new WiFiServer(80);

    /// WiFiServerSecure *a=new WiFiServerSecure(443);
    /// a->setServerKeyAndCert_P(rsakey, sizeof(rsakey), x509, sizeof(x509));
    /// a->begin();
    
    // Start the server
    a->begin();
    Serial.println("HTTP Server started");
    return a;
}
#endif


ESP8266WebServer* create_http_server(){ // ESP8266WebServer & MDNS & Updater facilities
    // Create an instance of the server
    // specify the 80 port to listen on as an argument
    ESP8266WebServer *a=new ESP8266WebServer(80);

    MDNS.begin(HOSTNAME);

    httpUpdater.setup(a); // will be http://HOSTNAME.local/update

    // Start the http server
    a->begin();

    MDNS.addService("http", "tcp", 80);

    Serial.println("HTTP Server started");
    return a;
}


#if defined(USE_HTTP_HTTP_CLIENT) // faster but always got nothing // --------------------------
void http_client_connect(const char *url){
    /// #include <ESP8266HTTPClient.h>
    HTTPClient http;
    
    Serial.print("\r\n[HTTP begin...]\r\n");
    
    // configure traged server and url
    /// http.begin("https://192.168.1.12/test.html", "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38"); // HTTPS
    http.begin(url); // HTTP
    Serial.print("[HTTP GET...]\r\n");
    // start connection and send HTTP header
    int httpCode = http.GET();

    // httpCode will be negative on error
    if (httpCode > 0){
        // HTTP header has been send and Server response header has been handled
        Serial.printf("[HTTP GET... code: %d]\r\n", httpCode);
        
        // file found at server
        if (httpCode == HTTP_CODE_OK){ // the connection may be broken and stuck here
            Serial.println(" -= data =- ---------");
            Serial.println(http.getString()); // usually has no data return, so failed.
            Serial.println(" ===================");
        }
        else Serial.printf("[HTTP GET... failed, error: %s]\r\n", http.errorToString(httpCode).c_str());
    }
    else Serial.printf("[HTTP Protocol failed, error: %s]\r\n", http.errorToString(httpCode).c_str());
    
    http.end();
    delay(150);
}
#elif defined(USE_HTTP_WIFI_CLIENT) // slower but usually failed connection // --------------------------
void http_client_connect(const char *url){
    // Use WiFiClient class to create TCP connections
    WiFiClient client;
    int httpPort = 80;
    if (!client.connect(remote_ip, httpPort)) {
        Serial.println("");
        Serial.println("[HTTP Protocol failed, error: 0]");
        Serial.println("");
        return;
    }

    Serial.print("[Requesting URL: [");
    Serial.print(url);
    Serial.println("]");

    // This will send the request to the server
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +\
        "Host: " + remote_ip + "\r\n" +\
        "Connection: close\r\n");

    unsigned long timeout = millis();
    while (client.available() == 0) {
        if (millis() - timeout > 4000) {
            Serial.println("[Client Timeout !]");
            client.stop();
            return;
        }
        delay(50);
    }

    // Read all the lines of the reply from server and print them to Serial
    Serial.println(" -= data =- ---------");
    while(client.available()){
        String line = client.readStringUntil('\r');
        Serial.println(line);
    }
    Serial.println(" ===================");
    delay(50);
}
#elif defined(USE_HTTP_WIFIHTTP_HYBRID) // --------------------------
void http_client_connect(const char *url){
    WiFiClient client;
    HTTPClient http; //must be declared after WiFiClient for correct destruction order, because used by http.begin(client,...)

    Serial.print("[HTTP begin...]\r\n");

    // configure server and url
    http.begin(client, url);
    /// http.begin(client, remote_ip, 80, url);

    Serial.print("[HTTP GET...]\r\n");
    // start connection and send HTTP header
    int httpCode = http.GET();
    if (httpCode > 0) {
        // HTTP header has been send and Server response header has been handled
        Serial.printf("[HTTP GET... code: %d]\r\n", httpCode);

        // file found at server
        if (httpCode == HTTP_CODE_OK) {
    
            // get lenght of document (is -1 when Server sends no Content-Length header)
            int len = http.getSize();
            
            // create buffer for read
            uint8_t buff[128] = { 0 };

#if 0 // with API
            Serial.println(http.getString());
#else // or "by hand"

            // get tcp stream
            WiFiClient * stream = &client;
            
            Serial.println(" -= data =- ===================");
            // read all data from server
            while (http.connected() && (len > 0 || len == -1)) {
                // read up to 128 byte
                int c = stream->readBytes(buff, std::min((size_t)len, sizeof(buff)));
                Serial.printf("\r\n[readBytes: %d]", c);
                if (!c) {
                    Serial.println("[read timeout]");
                    break; // must have or it will stuck here! and then if stuck at GET(), set timeout
                }

                // write it to Serial
                //////////Serial.write(buff, c);

                buff[c]=0;
                theSpeedStr=(char*)buff;
                Serial.println(theSpeedStr);

                if (len > 0) len -= c;
            }
            Serial.println(" ===================");
        }
#endif

        Serial.println();
        Serial.print("[HTTP connection closed or file end.]\r\n");
    }
    else Serial.printf("[HTTP GET... failed, error: %s]\r\n", http.errorToString(httpCode).c_str());
    http.end();
}
#endif // USE_HTTP_x // --------------------------


void gbl_update_started() {
  Serial.println("CALLBACK:  HTTP update process started");
}


void gbl_update_finished() {
  Serial.println("CALLBACK:  HTTP update process finished");
}


void gbl_update_progress(int cur, int total) {
  Serial.printf("CALLBACK:  HTTP update process at %d of %d bytes...\n", cur, total);
}


void gbl_update_error(int err) {
  Serial.printf("CALLBACK:  HTTP update fatal error code %d\n", err);
}


void gbl_updater(const char *url) {
    // wait for WiFi connection

    WiFiClient client;

    // The line below is optional. It can be used to blink the LED on the board during flashing
    // The LED will be on during download of one buffer of data from the network. The LED will
    // be off during writing that buffer to flash
    // On a good connection the LED should flash regularly. On a bad connection the LED will be
    // on much longer than it will be off. Other pins than LED_BUILTIN may be used. The second
    // value is used to put the LED on. If the LED is on with HIGH, that value should be passed
    ESPhttpUpdate.setLedPin(LED_BUILTIN, LOW);

    // Add optional callback notifiers
    ESPhttpUpdate.onStart(gbl_update_started);
    ESPhttpUpdate.onEnd(gbl_update_finished);
    ESPhttpUpdate.onProgress(gbl_update_progress);
    ESPhttpUpdate.onError(gbl_update_error);

    t_httpUpdate_return ret = ESPhttpUpdate.update(client, url);
    // Or:
    // t_httpUpdate_return ret = ESPhttpUpdate.update(client, "server", 80, "file.bin");

    switch (ret) {
        case HTTP_UPDATE_FAILED:
            Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s\r\n", ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
            break;

        case HTTP_UPDATE_NO_UPDATES:
            Serial.println("HTTP_UPDATE_NO_UPDATES");
            break;

        case HTTP_UPDATE_OK:
            Serial.println("HTTP_UPDATE_OK");
            break;
    }
}


bool Timeout_60s(){
    static int current_time = millis();
    int new_time = millis();
    if (new_time < (current_time + 60000)) return false;
    current_time = new_time;
    return true;
}


bool Timeout_10s(){
    static int current_time = millis();
    int new_time = millis();
    if (new_time < (current_time + 10000)) return false;
    current_time = new_time;
    return true;
}


bool Timeout_4s(){
    static int current_time = millis();
    int new_time = millis();
    if (new_time < (current_time + 4000)) return false;
    current_time = new_time;
    return true;
}


void page_gpio_low_cb(){
    // Prepare the response
    String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nLED is now ";
    s += "ON";
    s += "</html>\r\n";
    // Send the response to the client
    server_p->send(200, "text/plain", s.c_str());

    beepON();
    digitalWrite(2, LOW);
}


void page_gpio_high_cb(){
    // Prepare the response
    String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nLED is now ";
    s += "OFF";
    s += "</html>\r\n";
    // Send the response to the client
    server_p->send(200, "text/plain", s.c_str());

    beepOFF();
    digitalWrite(2, HIGH);
}


void page_led_onoff_inst(){
    /// http://<ip address>/led?state=on will turn the led ON
    /// http://<ip address>/led?state=off will turn the led OFF
    server_p->on("/led", []() {
        String state=server_p->arg("state");
        if (state == "on") {beepON(); digitalWrite(2, LOW);}
        else if (state == "off") {beepOFF(); digitalWrite(2, HIGH);}
        server_p->send(200, "text/plain", "Led is now " + state);
    });
}


void page_a_bin_cb(){
    SPIFFS.begin();
    File file = SPIFFS.open((String("/")+UPDFILE).c_str(), "r");
    if (!file) Serial.println((String("/")+UPDFILE+" opened failed").c_str());
    server_p->streamFile(file, "application/octet-stream");
    file.close();
}


void setup_updater(){
    pre_setup();
    post_setup();

#if AP_MODE
    enter_ap_mode();
    wifi_set_event_handler_cb(wifi_event_handler_cb);
#endif


#if HTTP_SERVER

    pinMode(2, OUTPUT); // D4
    server_p=create_http_server();

    server_p->on("/gpio/0", page_gpio_low_cb);
    server_p->on("/gpio/1", page_gpio_high_cb);
    server_p->on("/", [](){server_p->send(200, "text/plain", "This is an index page.");});
    page_led_onoff_inst();
    server_p->on("/upd", page_a_bin_cb);

    server_p->on("/reset", []() {
        server_p->send(200, "text/plain", "now reset...");

        //// do something before wdt-reset

        delay(1);
        while (1);
    });


    server_p->on("/relay/on", []() {
        server_p->send(200, "text/plain", "relay is now on");
        beepON();
        digitalWrite(14, HIGH);
        digitalWrite(2, LOW);
    });

    server_p->on("/relay/off", []() {
        server_p->send(200, "text/plain", "relay is now off");
        beepOFF();
        digitalWrite(14, LOW);
        digitalWrite(2, HIGH);
    });

    server_p->on("/ac/on", []() {
        server_p->send(200, "text/plain", "ac is now on");
        beepON();
        digitalWrite(16, HIGH);
        digitalWrite(2, LOW);
    });

    server_p->on("/ac/off", []() {
        server_p->send(200, "text/plain", "ac is now off");
        beepOFF();
        digitalWrite(16, LOW);
        digitalWrite(2, HIGH);
    });

    extern unsigned period5_err;
    server_p->on("/speed/error", []() {
        server_p->send(200, "text/plain", (String("error count ")+period5_err).c_str());
        period5_err=0;
    });

    extern unsigned speed_alert_flag;
    server_p->on("/speed/alert", []() {
        speed_alert_flag^=1;
        if (speed_alert_flag){
            server_p->send(200, "text/plain", "speed alert on");
            beepON();
            digitalWrite(2, LOW);
        }
        else {
            server_p->send(200, "text/plain", "speed alert off");
            beepOFF();
            digitalWrite(2, HIGH);
        }
    });

    extern unsigned test_alert_flag;
    server_p->on("/test/alert", []() {
        test_alert_flag^=1;
        if (test_alert_flag){
            server_p->send(200, "text/plain", "test alert on");
            beepON();
            digitalWrite(2, LOW);
        }
        else {
            server_p->send(200, "text/plain", "test alert off");
            beepOFF();
            digitalWrite(2, HIGH);
        }
    });

    extern unsigned freq5;
    extern String theSpeedStr;
    server_p->on("/speed", []() {
        server_p->send(200, "text/plain", theSpeedStr.c_str());
    });

#endif
}


void loop_updater() {
    //static unsigned tmo=micros();
    //if (!cMultiPwms::Timeout(750, tmo)) return;

    if (0 && Timeout_60s()){
        Serial.printf("\r\n\r\n\r\n\r\nUpdating...\r\n\r\n\r\n\r\n");
        gbl_updater((String("http://")+HOSTNAME+".local"+"/upd").c_str());
    }

#if AP_MODE

    static int has_conns=0;
    if (Timeout_10s())
        Serial.printf("Current STA connections: %d\r\n", (has_conns=connected_station_status()));
    if (has_conns<=0) return;

#elif STA_MODE

    if (!is_station_entered){
        if (Timeout_4s()){
            is_station_entered=enter_station_mode();
        }
        return;
    }

#endif


#if HTTP_SERVER

    server_p->handleClient();
    MDNS.update();
    delay(20);

#elif HTTP_CLIENT

    static int x=0;

    web_link="http://";
    web_link+=remote_ip;
    web_link+="/speed";

    http_client_connect(web_link.c_str());
    delay(80);

#endif
}




//////////////////////////////////////// main function /////////////////////////////////////
// use MultiPwms Lib v.0.9. gpio parking is changed to GPIO3.
// use "ESP-07"
// 2021.02.21.

// configuration/used:
// IDE: generic ESP8266 module, 115200bps, 160MHz, 26MHz crystal, 1MB flash/80MHz
// pins: GND/TX/RX
// pins: Open/GPIO0/Pull-low
// pins: GND/speed signal with 10K resistor to input half voltage(to level shifter)
// raw speed signal > 15V, duty-cycle=90, freq==2xrpm.
// GPIO13, speed signal input from level shifter output/3.3v. capable of max sensing 5kHz signal.
// GPIO12, buzzer, max 1kHz base.
// GPIO14, control relay to bypass or disable AC.
// GPIO16, control AC on/off when AC was disabled.
// connector: power
// connector: USB jack. left to right are bypass high-side, bypass low-side and pull-it-low, raw speed signal, gnd.
// level shifter, max 36v to 3.3v.
// 3 ss8050 used: control relay on, buzzer and GPIO16 sink.
// power board: 3.3V. max input source 24V


#define NEW_PARKING_GPIO 3
#define LED_GPIO 2

void SetLedOn(){digitalWrite(LED_GPIO, LOW);}
void SetLedOff(){digitalWrite(LED_GPIO, HIGH);}

cHwTimer timer_prob_freq(50, isr_prob_freq);
cMultiPwms pwm_buzzer(12, 1000, 20, 0, 0);

void setup_cmultipwms() {
    //ADC_MODE(ADC_TOUT);
    pinMode(NEW_PARKING_GPIO, INPUT); // by the RX0. set it as the parking pin.

    pinMode(LED_GPIO, OUTPUT); // led

    pinMode(13, INPUT); // speed
    pinMode(12, OUTPUT); digitalWrite(12, LOW); // buzzer
    pinMode(14, OUTPUT); digitalWrite(14, LOW); // relay
    pinMode(16, OUTPUT); digitalWrite(16, LOW); // ac
}


struct sPwmSound{ // if delay_ms==0, means pause, uses lower_bound for pause-ms.
    int lower_bound;
    int upper_bound;
    int inc;
    unsigned delay_ms;
};

sPwmSound buzzer_melody1[]={

    // (pos=0, size=3), single beep.
    {1000, 1000, 0, 20},
    {1800, 1800, 0, 5},
    {600, 600, 0, 30},

    // (0, 7), 2 beeps.
    {3, 0, 0, 0},
    {1000, 1000, 0, 20},
    {1800, 1800, 0, 5},
    {600, 600, 0, 30},

    // (0, 11), 3 beeps.
    {6, 0, 0, 0},
    {1000, 1000, 0, 20},
    {1800, 1800, 0, 5},
    {600, 600, 0, 30},

    // (0, 15), 4 beeps.
    {4, 0, 0, 0},
    {1000, 1000, 0, 20},
    {1800, 1800, 0, 5},
    {600, 600, 0, 30},

    // (0, 19), 5 beeps.
    {7, 0, 0, 0},
    {1000, 1000, 0, 20},
    {1800, 1800, 0, 5},
    {600, 600, 0, 30},

    // (19, 1), single lasting 1.5 second beep.
    {600, 600, 0, 1500},

    // (20, 29), short continuing 15 beeps.
    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    {120, 0, 0, 0},

    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    {120, 0, 0, 0},

    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    // (49, 5), for "on" sound.
    {3000, 3000, 0, 15},
    {800, 800, 0, 40},
    {3000, 3000, 0, 80},
    {15, 0, 0, 0},
    {2000, 2000, 0, 30},

    // (54, 5), for "off" sound.
    {2000, 2000, 0, 30},
    {15, 0, 0, 0},
    {3000, 3000, 0, 15},
    {800, 800, 0, 40},
    {3000, 3000, 0, 80},

    // (59, 6), mid gi gi gi.
    {80, 0, 0, 0},
    {800, 800, 0, 2},
    {4, 0, 0, 0},
    {800, 800, 0, 2},
    {4, 0, 0, 0},
    {800, 800, 0, 2},

    // (65, 6), low gi gi gi.
    {80, 0, 0, 0},
    {9000, 9000, 0, 2},
    {4, 0, 0, 0},
    {9000, 9000, 0, 2},
    {4, 0, 0, 0},
    {9000, 9000, 0, 2},

    // (71, 6), high gi gi gi.
    {80, 0, 0, 0},
    {200, 200, 0, 2},
    {4, 0, 0, 0},
    {200, 200, 0, 2},
    {4, 0, 0, 0},
    {200, 200, 0, 2},

#if 0 // it works well however, wifi-loop if enabled would affect the buzzer-loop. so, single tone could be ok.

    /*static unsigned tmo_sta=micros(), tt=0;
    if (cMultiPwms::Timeout(4000, tmo_sta)){
        if (tt==0) config_buzzer_sound(buzzer_melody1, 2); // 1
        else if (tt==1) config_buzzer_sound(buzzer_melody1, 5); // 2
        else if (tt==2) config_buzzer_sound(buzzer_melody1, 8); // 3
        else if (tt==3) config_buzzer_sound(buzzer_melody1, 11); // 4
        else if (tt==4) config_buzzer_sound(buzzer_melody1, 14); // 5
        else if (tt==5) config_buzzer_sound(buzzer_melody1+14, 1); // long beep
        else if (tt==6) config_buzzer_sound(buzzer_melody1+15, 29); // beep beep ...
        else if (tt==7) config_buzzer_sound(buzzer_melody1+44, 7); // on
        else if (tt==8) config_buzzer_sound(buzzer_melody1+51, 8); // off
        if (++tt>8) tt=0;
    }*/

    // (pos=0, size=2), single beep.
    {4000, 200, -200, 6},
    {6000, 400, -200, 2},

    // (0, 5), 2 beeps.
    {3, 0, 0, 0},
    {3000, 400, -200, 6},
    {7000, 200, -200, 2},

    // (0, 8), 3 beeps.
    {6, 0, 0, 0},
    {4000, 200, -200, 6},
    {6000, 400, -200, 2},

    // (0, 11), 4 beeps.
    {4, 0, 0, 0},
    {3000, 400, -200, 6},
    {7000, 200, -200, 2},

    // (0, 14), 5 beeps.
    {7, 0, 0, 0},
    {4000, 200, -200, 6},
    {6000, 400, -200, 2},

    // (14, 1), single lasting 1.5 second beep.
    {500, 500, 0, 1500},

    // (15, 29), short continuing 15 beeps.
    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    {120, 0, 0, 0},

    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    {120, 0, 0, 0},

    {400, 400, 0, 30},
    {95, 0, 0, 0},
    {400, 400, 0, 40},
    {60, 0, 0, 0},
    {400, 400, 0, 50},
    {80, 0, 0, 0},
    {400, 400, 0, 40},
    {50, 0, 0, 0},
    {400, 400, 0, 30},

    // (44, 7), for "on" sound.
    {1000, 4000, 200, 10},
    {4000, 4000, 0, 200},
    {2000, 2000, 0, 50},
    {2000, 200, -200, 2},
    {200, 200, 0, 50},
    {2000, 2000, 0, 50},
    {2000, 200, -200, 4},

    // (51, 8), for "off" sound.
    {2000, 200, -200, 2},
    {200, 200, 0, 50},
    {2000, 2000, 0, 50},
    {2000, 200, -200, 4},
    {1000, 4000, 200, 10},
    {4000, 4000, 0, 200},
    {100, 0, 0, 0},
    {4000, 4000, 0, 200},
#endif
};

unsigned buzzer_issued1=0, buzzer_melody_sz1=0;
const sPwmSound *buzzer_melody_ptr=0;

void buzzer_sound(const struct sPwmSound *buzzer_melody, const unsigned buzzer_melody_sz, unsigned &buzzer_issued){ // only for 1 instance.
    static int x;
    static unsigned x_sz, current_time;
    switch (buzzer_issued){
        case 0: return;
        case 1:
            x_sz=0;
            buzzer_issued=2;
        case 2:
            if (++x_sz>buzzer_melody_sz){buzzer_issued=0; pwm_buzzer.Pause(); SetLedOff(); return;}
            x=buzzer_melody[x_sz-1].lower_bound;
            if (!buzzer_melody[x_sz-1].delay_ms){
                pwm_buzzer.Pause();
                current_time=micros();
                buzzer_issued=5;
                return;
            }
            buzzer_issued=3;
        case 3:
            if (buzzer_melody[x_sz-1].inc>0 && x>buzzer_melody[x_sz-1].upper_bound){buzzer_issued=2; return;}
            else if (buzzer_melody[x_sz-1].inc<0 && x<buzzer_melody[x_sz-1].upper_bound){buzzer_issued=2; return;}
            current_time=micros();
            pwm_buzzer.setPeriod(x, 2, 50);
            pwm_buzzer.Resume();
            SetLedOn();
            buzzer_issued=4;
        case 4:
            if (!cMultiPwms::Timeout(buzzer_melody[x_sz-1].delay_ms, current_time, true, true)) return;
            if (buzzer_melody[x_sz-1].inc) x+=buzzer_melody[x_sz-1].inc;
            else {buzzer_issued=2; return;}
            buzzer_issued=3;
            return;
        case 5:
            if (!cMultiPwms::Timeout(x, current_time, true, true)) return;
            buzzer_issued=2;
            return;
        default: buzzer_issued=0; pwm_buzzer.Pause(); return;
    }
}

void config_buzzer_sound(const struct sPwmSound *ptr, const unsigned sz){
    buzzer_melody_ptr=ptr;
    buzzer_melody_sz1=sz;
    buzzer_issued1=1;
}

void poll_buzzer_sound(){
    if (buzzer_melody_ptr) buzzer_sound(buzzer_melody_ptr, buzzer_melody_sz1, buzzer_issued1);
}

unsigned freq5=0;
IRAM_ATTR unsigned pre_state5=0, cur_state5=0, tmcnt5=0, period5=0;
IRAM_ATTR void isr_prob_freq(){
    cur_state5=!digitalRead(13);
    if (pre_state5^cur_state5){
        if (cur_state5){
            period5=micros()-tmcnt5;
            tmcnt5=micros();
        }
        pre_state5=cur_state5;
    }
}

void speed_average(){
    static unsigned older=0, oldest=0, i=0;
    if (period5>100 && period5<1000000){
        if (period5<=4580){period5=4285; period5_err++;}////////////////////////////////////////////////////
        oldest=older;
        older=freq5;
        freq5=(((30000000/period5)*8+older*5+oldest*3)>>4);
        i=0;
    }
    else if (i++>5){oldest=older=freq5=i=0;}
}

void speed_alert(){
    // if want to continue alert at a specific stage, set its falling as the next rising stage (A+1).
    const unsigned rising[]=    {0, 999, 1999, 2999, 3999, 4999, 5799, 6299, 6999, 7499, 7999, unsigned(-1)};
    const unsigned falling[]=   {0, 750, 1750, 2750, 3750, 4750, 5550, 7000, 7500, 8000, unsigned(-1)};
    const int snd_offset[]=     {-1, -1, 0,    0,    0,    0,    19,   19,   59,   65,   71}; // -1 desig not use.
    const int snd_size[]=       {-1, -1, 7,    11,   15,   19,   1,    1,    6,    6,    6};
    static unsigned pivot=0;
    unsigned i=pivot;

    while (freq5>rising[i+1]) i++;
    if ((pivot<i) && (snd_offset[i]>=0)){
        if (!buzzer_issued1) config_buzzer_sound(buzzer_melody1+snd_offset[i], snd_size[i]);
    }
    while (freq5<falling[i]) i--;
    pivot=i;
}

void setup(){
    setup_cmultipwms();

    Serial.begin(115200);
    delay(5000);

    setup_updater();

    pwm_buzzer.setDC(5);
    pwm_buzzer.Pause();

    config_buzzer_sound(buzzer_melody1+20, 29); // beep beep ...
}

void beepON(){config_buzzer_sound(buzzer_melody1+49, 5);}
void beepOFF(){config_buzzer_sound(buzzer_melody1+54, 5);}
void beepBEEP(){config_buzzer_sound(buzzer_melody1+20, 29);}

void loop(){
    loop_updater();
    speed_average();
    theSpeedStr=freq5;
    if (speed_alert_flag) speed_alert();
    poll_buzzer_sound();

    static unsigned tmo_sta=micros(), tt=0;
    if (test_alert_flag && cMultiPwms::Timeout(4000, tmo_sta)){
        if (tt==0) config_buzzer_sound(buzzer_melody1, 3); // 1
        else if (tt==1) config_buzzer_sound(buzzer_melody1, 7); // 2
        else if (tt==2) config_buzzer_sound(buzzer_melody1, 11); // 3
        else if (tt==3) config_buzzer_sound(buzzer_melody1, 15); // 4
        else if (tt==4) config_buzzer_sound(buzzer_melody1, 19); // 5
        else if (tt==5) config_buzzer_sound(buzzer_melody1+19, 1); // long beep
        else if (tt==6) config_buzzer_sound(buzzer_melody1+20, 29); // beep beep ...
        else if (tt==7) config_buzzer_sound(buzzer_melody1+49, 5); // on
        else if (tt==8) config_buzzer_sound(buzzer_melody1+54, 5); // off
        else if (tt==9) config_buzzer_sound(buzzer_melody1+59, 6); // mid gi gi gi
        else if (tt==10) config_buzzer_sound(buzzer_melody1+65, 6); // low gi gi gi
        else if (tt==11) config_buzzer_sound(buzzer_melody1+71, 6); // high gi gi gi
        if (++tt>11) tt=0;
    }
}

20210222 新版程式碼更新

20210405 新版程式碼 v.0.1 更新

幾近完善。配合筆者新版的 WiFi code base 及 var2file lib。所以三者的功能整合在一起,有相當多的操作。不過主功能就是只有會鳴叫及傳送轉速數值,就是這張板子的用途。。。

20210406 minor fix v.0.2 update

20210604 minor update v.0.3

20220521 minor update v.0.4

此板子的目的,就是取樣出轉速,並無線發送轉速數值出來供後續運用。

Categories: Arduino Arduino Brick

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