uint64_t number; unsigned long long1 = (unsigned long)((number & 0xFFFF0000) >> 16 ); unsigned long long2 = (unsigned long)((number & 0x0000FFFF)); String hex = String(long1, HEX) + String(long2, HEX); // six octets
void drawPixel(uint16_t x, uint16_t y, uint16_t color);绘制线 你也可以画一条线,指定起点和终点和颜色:void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color);对于水平或垂直的线,有优化的线绘制功能,避免角计算:...
void drawPixel(int16_t x, int16_t y, uint16_t color); 复制代码 在点(x,y)上画一个颜色为color的像素点。 案例 tft.drawPixel(1,1,RED); tft.drawPixel(10,10,RED); tft.drawPixel(20,20,RED); tft.drawPixel(40,40,RED); tft.drawPixel(60,60,RED); 4、线 void drawLine(int16_t x0...
void drawPixel(uint16_t x, uint16_t y, uint16_t color); 绘制线 你也可以画一条线,指定起点和终点和颜色: void drawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color); 对于水平或垂直的线,有优化的线绘制功能,避免角计算: void drawFastVLine(uint16_t x0,...
}//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...
11.13 string( char array/字符串) 11.14 String object( String类) 11.15 array(数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域&修饰符 13.1 variable scope(变量的作用域) ...
#include"FS.h"#include"SD.h"#include"SPI.h"voidlistDir(fs::FS&fs,constchar*dirname,uint8_tlevels){Serial.printf("Listing directory: %sn",dirname);File root=fs.open(dirname);if(!root){Serial.println("Failedto open directory");return;}if(!root.isDirectory()){Serial.println("Not a di...
h>#include <WiFiClient.h>ESP8266WiFiMulti WiFiMulti;void setup() { Serial.begin(115200); // Serial.setDebugOutput(true); Serial.println(); Serial.println(); Serial.println(); for (uint8_t t = 4; t > 0; t--) { Serial.printf("[SETUP] WAIT %d...\n", t); Se...
fix(board): Alfredo NoU3 pins_arduino.h uses uint8_t but it causes error with esp32-hal-gpio.h by @SaintSampo in #11206 feat(zigbee): Add battery voltage attribute support by @P-R-O-C-H-Y in #11210 Use CONFIG_BT_BLUEDROID_ENABLED for enabling by @Jason2866 in #11214 refactor(rm...
uint8_t pin = count%4; // ping-pong string selection so displayed string is not modified. uint8_t n = count%2; str[n] = "ADC" + String(pin) + ": " + analogRead(pin) + ", "; // Should check for error. Return of false indicates error. ...