381 lines
11 KiB
C++
381 lines
11 KiB
C++
/*
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*
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* 基于 Raspberry Pico 的厨房危险(火灾)报警
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* 使用 DS18B20温度传感器
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* 使用 CH4 N55A甲烷气体传感器(进口)
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* 使用 PASCO2V01 CO2二氧化碳传感器模块(进口模块暂时买不到！)
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* 使用 MH-Z14B CO2二氧化碳传感器模块(国产)(0 - 5000ppm)
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* 使用 ME2_CO CO一氧化碳传感器模块(国产)
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*
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* Date: 20240103
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*
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*/
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#include "MAIN.hpp"
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#include "DTH11.hpp"
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#include "HC-12.hpp"
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#include "ZC13.hpp"
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#ifndef PICO_DEFAULT_LED_PIN
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#warning pio/hello_pio example requires a board with a regular LED
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#define PICO_DEFAULT_LED_PIN 25
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#endif
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static inline bool uart_rx_program_available(PIO pio, uint sm)
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{
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return !pio_sm_is_rx_fifo_empty(pio, sm);
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}
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// 闪烁LED
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static void light_flashing()
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{
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
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gpio_put(PICO_DEFAULT_LED_PIN, 1);
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sleep_ms(100);
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gpio_put(PICO_DEFAULT_LED_PIN, 0);
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sleep_ms(100);
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return;
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}
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int wifi()
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{
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if (cyw43_arch_init()) {
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printf("failed to initialise\n");
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return 1;
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}
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cyw43_arch_enable_sta_mode();
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printf("Connecting to Wi-Fi...\n");
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if (cyw43_arch_wifi_connect_timeout_ms(WIFI_SSID, WIFI_PASSWORD, CYW43_AUTH_WPA2_AES_PSK, 30000)) {
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printf("failed to connect.\n");
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return 1;
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} else {
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printf("Connected.\n");
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}
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cyw43_arch_deinit();
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return 0;
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}
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// 获取主板温度
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float read_onboard_temperature()
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{
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adc_init();
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adc_set_temp_sensor_enabled(true);
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adc_select_input(4); // Input 4 is the onboard temperature sensor.
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/* 12-bit conversion, assume max value == ADC_VREF == 3.3 V */
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const float conversionFactor = 3.3f / (1 << 12);
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float adc = (float)adc_read() * conversionFactor;
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float tempC = 27.0f - (adc - 0.706f) / 0.001721f;
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//printf("Onboard temperature %.02f°C %.02f°F\n", tempC, (tempC * 9 / 5 + 32));
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return tempC;
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}
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// 温度传感器
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float DS18B20()
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{
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float TEMPERATURE = -1;
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One_wire one_wire(DS18B20_PIN);
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one_wire.init();
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rom_address_t address {
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};
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one_wire.single_device_read_rom(address);
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/*
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printf("Device Address: %02x%02x%02x%02x%02x%02x%02x%02x\n",
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address.rom[0], address.rom[1], address.rom[2], address.rom[3],
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address.rom[4], address.rom[5], address.rom[6], address.rom[7]);
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*/
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one_wire.convert_temperature(address, true, false);
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TEMPERATURE = one_wire.temperature(address);
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//printf("Temperature: %3.1f°C\n", one_wire.temperature(address));
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return TEMPERATURE;
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}
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// 甲烷气体传感器
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int CH4()
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{
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int CH4_TRUE = 0;
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
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gpio_init(CH4_PIN); // 设置 GP14 引脚作为输入引脚
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gpio_set_dir(CH4_PIN, GPIO_IN);
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if (gpio_get(CH4_PIN) == 1) {
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CH4_TRUE = 1;
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}
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sleep_ms(100);
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return CH4_TRUE;
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}
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// CO2
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static uint16_t MH_Z14B(int *MH_Z14B_DATA_IS_OK)
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{
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// 初始化UART
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uart_init(UART1, BAUD_RATE);
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gpio_set_function(UART1_TX_PIN, GPIO_FUNC_UART);
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gpio_set_function(UART1_RX_PIN, GPIO_FUNC_UART);
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uart_set_hw_flow(UART1, false, false);
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uart_set_format(UART1, DATA_BITS, STOP_BITS, PARITY);
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// 0x86 读气体浓度值
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uint8_t CMD[9] = { 0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79 };
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uart_write_blocking(UART1, CMD, 9);
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sleep_ms(200);
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// 读取
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uint8_t CO2_DATA[9] = { 0 };
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uart_read_blocking(UART1, CO2_DATA, 9);
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// CO2 浓度
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uint16_t CO2_CONC = (256 * CO2_DATA[2]) + CO2_DATA[3];
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// 校验
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uint8_t CHECKSUM = (0xFF - (CO2_DATA[1] + CO2_DATA[2] + CO2_DATA[3] + CO2_DATA[4] + CO2_DATA[5] + CO2_DATA[6] + CO2_DATA[7])) + 1;
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if (CO2_DATA[8] == CHECKSUM && CO2_DATA[1] == 0x86) {
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//printf("CHECKSUM: %X = %X\n", CO2_DATA[8], CHECKSUM);
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//printf("CO2 Concentration: %d ppm\n", CO2_CONC);
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*MH_Z14B_DATA_IS_OK = 1;
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} else {
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// 校准传感器 零点 （ZERO）
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uint8_t ZERO[] = { 0XFF, 0X01, 0X87, 0X00, 0X00, 0X00, 0X00, 0X00, 0X78 };
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uart_write_blocking(UART1, ZERO, 9);
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sleep_ms(200);
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// 校准传感器 跨度点 （SPAN）
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uint8_t SPAN[] = { 0XFF, 0X01, 0X88, 0X07, 0XD0, 0X00, 0X00, 0X00, 0XA0 };
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uart_write_blocking(UART1, SPAN, 9);
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sleep_ms(200);
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*MH_Z14B_DATA_IS_OK = 0;
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printf("CO2 concentration reading failed!\n");
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}
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return CO2_CONC;
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}
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// CO
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static uint16_t ME2_CO(int IS_ANSWER, int *ME2_CO_DATA_IS_OK)
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{
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// 初始化UART
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uart_init(UART0, BAUD_RATE);
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gpio_set_function(UART0_TX_PIN, GPIO_FUNC_UART);
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gpio_set_function(UART0_RX_PIN, GPIO_FUNC_UART);
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uart_set_hw_flow(UART0, false, false);
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uart_set_format(UART0, DATA_BITS, STOP_BITS, PARITY);
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if (IS_ANSWER == 1) {
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// 应答模式
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uint8_t _ANSWER[9] = { 0xFF, 0x01, 0x78, 0x41, 0x00, 0x00, 0x00, 0x00, 0x46 };
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uart_write_blocking(UART0, _ANSWER, 9);
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sleep_ms(100);
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}
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// 读取
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uint8_t CO_DATA[9] = { 0 };
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uart_read_blocking(UART0, CO_DATA, 9);
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// CO 浓度
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uint16_t CO_CONC = (256 * CO_DATA[4]) + CO_DATA[5];
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// 校验
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uint8_t CHECKSUM = (0xFF - (CO_DATA[1] + CO_DATA[2] + CO_DATA[3] + CO_DATA[4] + CO_DATA[5] + CO_DATA[6] + CO_DATA[7])) + 1;
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if (CO_DATA[8] == CHECKSUM && CO_DATA[1] == 0x04) {
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//printf("CHECKSUM: %X = %X\n", CO_DATA[8], CHECKSUM);
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//printf("CO Concentration: %d ppm\n", CO_CONC);
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*ME2_CO_DATA_IS_OK = 1;
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} else {
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*ME2_CO_DATA_IS_OK = 0;
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}
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return CO_CONC;
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}
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// 433MHZ 无线电发送数据到服务器端（Raspberry pico W WiFi 暂时不实现）
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int _433_MHZ(unsigned long val)
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{
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const uint RADIO_TRANSMIT_PIN = _433_MHZ_PIN; // 433发射模块引脚
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const uint PULSE_LENGTH = 169; // set this to PULSELENGTH RECIEVED
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const uint REPEAT_TRANSMIT = 4; // set this to whatever works best for you. // 重复发送
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const uint PROTOCOL = 1; // set this to PROTOCOL RECIEVED
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const uint BIT_LENGTH = 24; // set this to BIT LENGTH RECIEVED
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gpio_init(RADIO_TRANSMIT_PIN);
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RCSwitch mySwitch = RCSwitch();
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mySwitch.enableTransmit(RADIO_TRANSMIT_PIN);
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mySwitch.setProtocol(PROTOCOL);
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mySwitch.setPulseLength(PULSE_LENGTH);
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mySwitch.setRepeatTransmit(REPEAT_TRANSMIT);
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mySwitch.send(val, BIT_LENGTH);
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sleep_ms(10);
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return 0;
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}
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// 简单编码通过433MHZ发送
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int addDigit(int number, int digit)
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{
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char TEMP[BUFER] = { 0 };
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snprintf(TEMP, sizeof(TEMP), "%d%d%d", digit, number, digit);
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return atoi(TEMP);
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}
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// 核心0发送数据到核心1, 核心1判断是否有数据到来.
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static void core1_main()
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{
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while (1) {
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multicore_fifo_push_blocking(CH4());
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watchdog_update();
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sleep_ms(1000);
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}
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return;
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}
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int main()
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{
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stdio_init_all();
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sleep_ms(1000);
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set_sys_clock_khz(250000, true);
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int FIFO_ = -1;
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float TEMPERATURE = -1;
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float ONBOARD_TEMPERATURE = -1;
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uint16_t CO2_DATA = -1;
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uint16_t CO_DATA = -1;
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int MH_Z14B_DATA_IS_OK = 0;
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int ME2_CO_DATA_IS_OK = 0;
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// core1
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multicore_reset_core1();
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multicore_launch_core1(core1_main);
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if (watchdog_caused_reboot()) { // 判断是否从看门狗启动或者正常启动
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printf("Rebooted by Watchdog!\n");
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} else {
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printf("Clean boot\n");
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}
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watchdog_enable(8300, 1); // 8秒检测是否重新加载看门狗计数器. (不更新计数器则重启硬件, 最高8秒)
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watchdog_start_tick(12);
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_HC_12_INIT();
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ZC13_INIT();
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while (1) {
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watchdog_update(); // 喂狗
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// RP2040温度
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ONBOARD_TEMPERATURE = read_onboard_temperature();
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if (ONBOARD_TEMPERATURE != -1) {
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printf("Onboard temperature %.02f°C %.02f°F\n", ONBOARD_TEMPERATURE, (ONBOARD_TEMPERATURE * 9 / 5 + 32));
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//_433_MHZ(addDigit(ONBOARD_TEMPERATURE, SIGN_RP2040));
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char ONBOARD_TEMPERATURE_TEMP[BUFER] = { 0 };
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sprintf(ONBOARD_TEMPERATURE_TEMP, "Onboard temperature %.02f°C %.02f°F\n", ONBOARD_TEMPERATURE, (ONBOARD_TEMPERATURE * 9 / 5 + 32));
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_HC_12(ONBOARD_TEMPERATURE_TEMP);
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}
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watchdog_update(); // 喂狗
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// CH4
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FIFO_ = multicore_fifo_pop_blocking();
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if (FIFO_ == 1) {
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printf("Kitchen danger (fire) alarm detects CH4!!!\n");
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light_flashing();
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FIFO_ = -1;
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//_433_MHZ(addDigit(4, SIGN_CH4));
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}
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watchdog_update(); // 喂狗
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/*
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if (1 == CH4()) {
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printf("Kitchen danger (fire) alarm detects CH4!!!\n");
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light_flashing();
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_HC_12("Kitchen danger (fire) alarm detects CH4!!!\n");
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}
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watchdog_update(); // 喂狗
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*/
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// DS18B20
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TEMPERATURE = DS18B20();
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if (TEMPERATURE != -1) {
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if (TEMPERATURE >= 10) {
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printf("Temperature: %.3f°C\n", TEMPERATURE);
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}
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//_433_MHZ(addDigit(TEMPERATURE, SIGN_DS18B20));
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if (TEMPERATURE != 85) {
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char TEMPERATURE_TEMP[BUFER] = { 0 };
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sprintf(TEMPERATURE_TEMP, "Temperature: %.3f°C\n", TEMPERATURE);
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_HC_12(TEMPERATURE_TEMP);
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TEMPERATURE = -1;
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}
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}
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watchdog_update(); // 喂狗
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// ZC13 CH4 传感器
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char CH4_DATA[BUFER] = { 0 };
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sprintf(CH4_DATA, "CH4 Concentration: %d\n", ZC13("ZC05"));
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_HC_12(CH4_DATA);
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watchdog_update(); // 喂狗
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// ME2_CO CO
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// 50 ppm（百万分之一）：长时间暴露可能会导致头痛、恶心、疲劳等不适症状。
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// 200 ppm：短时间暴露可能会导致轻微的头痛、疲劳和呼吸困难。
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// 800 ppm：短时间暴露可能会导致头晕、恶心和死亡。
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// 1600 ppm：短时间暴露可能会导致昏迷、危及生命。
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CO_DATA = ME2_CO(0, &ME2_CO_DATA_IS_OK);
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if (CO_DATA != -1 && ME2_CO_DATA_IS_OK == 1) {
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printf("CO Concentration: %d ppm\n", CO_DATA);
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//_433_MHZ(addDigit(CO_DATA, SIGN_CO));
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char CO_DATA_TEMP[BUFER] = { 0 };
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sprintf(CO_DATA_TEMP, "CO Concentration: %d ppm\n", CO_DATA);
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_HC_12(CO_DATA_TEMP);
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}
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watchdog_update(); // 喂狗
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// MH_Z14B CO2
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CO2_DATA = MH_Z14B(&MH_Z14B_DATA_IS_OK);
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if (CO2_DATA != -1 && MH_Z14B_DATA_IS_OK == 1) {
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printf("CO2 Concentration: %d ppm\n", CO2_DATA);
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//_433_MHZ(addDigit(CO2_DATA, SIGN_CO2));
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char CO2_DATA_TEMP[BUFER] = { 0 };
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sprintf(CO2_DATA_TEMP, "CO2 Concentration: %d ppm\n", CO2_DATA);
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_HC_12(CO2_DATA_TEMP);
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}
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printf("\r\n");
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watchdog_update(); // 喂狗
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sleep_ms(3000);
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watchdog_update(); // 喂狗
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}
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return 0;
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}
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