简单粗暴的说: unit8_t,就是unsigned char, 数值范围是0-255, 占1个字节 unit16_t,就是unsigned int, 数值范围是0-65535, 占2个字节 unit32_t,就是unsigned long, 数值范围是0-4 294 967 295, 占4个字节编辑于 2022-05-09 20:48 Arduino ...
在Arduino编程中，理解和使用数据类型是关键步骤。其中，uint8_t、unit16_t和unit32_t分别代表不同长度和数值范围的无符号整型数据。首先，我们来了解一下uint8_t。它实际上就是unsigned char类型，用于表示一个无符号的8位整型数，其数值范围从0到255，占用一个字节的内存空间。紧随其后的是unit16_...
const char* esppubTopic = "/myesp32/dht22/pub/";//上传Topic const char* espsubTopic = "/myesp32/dht22/sub/";//订阅Topic uint32_t previoustime = 0;// WiFiClientespClient; PubSubClient client(espClient); unsigned long lastMsg = 0; #define MSG_BUFFER_SIZE (50) char msg[MSG_BUFF...
}//esp_err_t uart_set_line_inverse(uart_port_t uart_num, uint32_t inverse_mask)uart_set_line_inverse(1, UART_SIGNAL_RTS_INV);//特殊,修改输出或输入的通信电信号正负逻辑//Certain versions of Arduino core don't define MODE_RS485_HALF_DUPLEX and so fail to compile.//By using UART_MOD...
int32_t; //328bit有符号类型 typedef unsigned long intuint32_t; //32bit有符号类型 typedef signed long longint int64_t; //32bit有符号类型.可能无法使用 typedef unsigned long longint uint64_t; //32bit有符号类型,可能无法使用 /***保存地址值的***/ typedef int16_t intptr_t; //...
uint32_t lastMillis; uint8_t hours = 10; uint8_t minutes = 02; uint8_t seconds = 0; void printSeconds() { if (seconds & 1) { ssd1306_printFixed(54, 2, ":", STYLE_NORMAL); } else { ssd1306_printFixed(54, 2, " ", STYLE_NORMAL); ...
uint32_t color = strip.Color(val, val, val); strip.setPixelColor(0, color); if(val>=235) stat = SUB; if(val<=0) stat = ADD; strip.show(); delay(15); if(stat==SUB) val --; else if(stat==ADD) val++; } 1. 2. ...
static lv_disp_drv_t disp_drv; /* Display flushing */ void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p) { uint32_t w = (area->x2 - area->x1 + 1); uint32_t h = (area->y2 - area->y1 + 1); ...
void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c)--使用32位“打包”RGB或RGBW值设置像素的颜色。n为像素索引,从0开始。c为32位的颜色值。 void Adafruit_NeoPixel::fill(uint32_t c, uint16_t first, uint16_t count)--使用一种颜色填充新像素条的全部或部分。c为32位的颜色值。first...