OLED显示BMP05大气压强
用OLED显示大气压强中遇到个问题，单独的OLED可以，单独的大气压强也可以，两个组合就没有显示了。他们都用到了Write这个库。请问有好的办法解决吗？/*********************************************************************
This is an example for our Monochrome OLEDs based on SSD1306 drivers
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/category/63_98
This example is for a 128x64 size display using SPI to communicate
4 or 5 pins are required to interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
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Written by Limor Fried/Ladyadafor Adafruit Industries.
BSD license, check license.txt for more information
All text above, and the splash screen must be included in any redistribution
*********************************************************************/
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_DC 2
#define OLED_CS -1
#define OLED_CLK 5
#define OLED_MOSI 4
#define OLED_RESET 3
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2
#define LOGO16_GLCD_HEIGHT 16
#define LOGO16_GLCD_WIDTH16
#define BMP085_ADDRESS 0x77// BMP085的I2C地址
const unsigned char OSS = 0;// 采样设置
// 校准值
int ac1;
int ac2;
int ac3;
unsigned int ac4;
unsigned int ac5;
unsigned int ac6;
int b1;
int b2;
int mb;
int mc;
int md;
// b5用于计算bmp085GetTemperature(...)，它也同时用于bmp085GetPressure(...)
// 所以Temperature(...)必须在Pressure(...)之前声明
long b5;
short temperature;
long pressure;
void setup() {
Serial.begin(9600);
display.begin(SSD1306_SWITCHCAPVCC);
display.clearDisplay(); // clears the screen and buffer
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(8,0);
display.println("Pressure:");
//Wire.begin();
// bmp085Calibration();
}
void loop() {
pressure = bmp085GetPressure(bmp085ReadUP());
// text display tests
display.setCursor(16,32);
display.setTextColor(WHITE); // 'inverted' text
display.println((pressure/100.0));
display.setCursor(90,32);
display.print("hPa");
display.display();
//Serial.print((pressure/100.0), DEC);
//Serial.println(" hPa");
//Serial.println();
//delay(1000);
}
void bmp085Calibration()
{
ac1 = bmp085ReadInt(0xAA);
ac2 = bmp085ReadInt(0xAC);
ac3 = bmp085ReadInt(0xAE);
ac4 = bmp085ReadInt(0xB0);
ac5 = bmp085ReadInt(0xB2);
ac6 = bmp085ReadInt(0xB4);
b1 = bmp085ReadInt(0xB6);
b2 = bmp085ReadInt(0xB8);
mb = bmp085ReadInt(0xBA);
mc = bmp085ReadInt(0xBC);
md = bmp085ReadInt(0xBE);
}
// 计算压力
// 校准值必须是已知的
// B5在bmp085GetTemperature（...）需要使用，所以必须先调用。
// 返回值以Pa为单位
long bmp085GetPressure(unsigned long up)
{
long x1, x2, x3, b3, b6, p;
unsigned long b4, b7;
b6 = b5 - 4000;
// 计算B3
x1 = (b2 * (b6 * b6)>>12)>>11;
x2 = (ac2 * b6)>>11;
x3 = x1 + x2;
b3 = (((((long)ac1)*4 + x3)<<OSS) + 2)>>2;
// 计算B4
x1 = (ac3 * b6)>>13;
x2 = (b1 * ((b6 * b6)>>12))>>16;
x3 = ((x1 + x2) + 2)>>2;
b4 = (ac4 * (unsigned long)(x3 + 32768))>>15;
b7 = ((unsigned long)(up - b3) * (50000>>OSS));
if (b7 < 0x80000000)
p = (b7<<1)/b4;
else
p = (b7/b4)<<1;
x1 = (p>>8) * (p>>8);
x1 = (x1 * 3038)>>16;
x2 = (-7357 * p)>>16;
p += (x1 + x2 + 3791)>>4;
return p;
}
// 在BMP085的'address'中读取一个字节
char bmp085Read(unsigned char address)
{
unsigned char data;
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(address);
Wire.endTransmission();
Wire.requestFrom(BMP085_ADDRESS, 1);
while(!Wire.available());
return Wire.read();
}
// 从BMP085读取两个字节
// 第一个字节是从'address'
// 第二个字节是从'address'+1
int bmp085ReadInt(unsigned char address)
{
unsigned char msb, lsb;
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(address);
Wire.endTransmission();
Wire.requestFrom(BMP085_ADDRESS, 2);
while(Wire.available()<2);
msb = Wire.read();
lsb = Wire.read();
return (int) msb<<8 | lsb;
}
// 读取未补偿的温度值
unsigned int bmp085ReadUT()
{
unsigned int ut;
// 在寄存器0xF4写入0x2E
// 这个用来请求进行温度读取
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(0xF4);
Wire.write(0x2E);
Wire.endTransmission();
// 至少等待4.5ms
delay(5);
// 从寄存器0xF6与0xF7读取两个字节
ut = bmp085ReadInt(0xF6);
return ut;
}
// 读取未补偿的压力值
unsigned long bmp085ReadUP()
{
unsigned char msb, lsb, xlsb;
unsigned long up = 0;
// 写入0x34+(OSS<<6)到寄存器0xF4
// 请求气压数据读取
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(0xF4);
Wire.write(0x34 + (OSS<<6));
Wire.endTransmission();
// 等待转换，延迟时间依赖于OSS
delay(2 + (3<<OSS));
// 读取寄存器0xF6 (MSB), 0xF7 (LSB), and 0xF8 (XLSB)
Wire.beginTransmission(BMP085_ADDRESS);
Wire.write(0xF6);
Wire.endTransmission();
Wire.requestFrom(BMP085_ADDRESS, 3);
// 等待数据变为可用
while(Wire.available() < 3);
msb = Wire.read();
lsb = Wire.read();
xlsb = Wire.read();
up = (((unsigned long) msb << 16) | ((unsigned long) lsb << 8) | (unsigned long) xlsb) >> (8-OSS);
return up;
}
是不是端口冲突了？ maxims 发表于 2014-5-27 18:46 static/image/common/back.gif
是不是端口冲突了？
端口也没有冲突啊 跟硬體有關的問題, 不是人人有同樣的硬體可以試的, 最好學習自己 debug.
你說獨立沒問題, 是指同時接上 OLED 及 BMP05 獨立行各自的程式, 還是獨立接上一個硬件, 行該硬件的程式?
既然你說 没有显示, 就先把問題簡單化,刪去 loop 的內容, 只在 setup 中測試 OLED 顯示.可以先確認硬件是否有沖突.
可惜我无法得到 Adafruit_SSD1306.h 文件，谢谢你能给一份 老来疯 发表于 2015-4-15 01:18 static/image/common/back.gif
可惜我无法得到 Adafruit_SSD1306.h 文件，谢谢你能给一份
你有没有u8glin库文件，我这里有SSD1306的库，求一份u8glib库文件 yanglang00 发表于 2015-5-3 17:09 static/image/common/back.gif
你有没有u8glin库文件，我这里有SSD1306的库，求一份u8glib库文件
我也没有u8glin库文件，只因不能上谷歌 yanglang00 发表于 2015-5-3 17:09 static/image/common/back.gif
你有没有u8glin库文件，我这里有SSD1306的库，求一份u8glib库文件
附件包括 Adafruit_SSD1306的两个库
Adafruit_SSD1306-master.zip
Adafruit-GFX-Library-master.zip
以及u8glib_arduino_v1.17.zip 最新的V1.17版本的库 I2C的OLED能直接用你这个程序吗？ 老来疯 发表于 2015-4-15 01:18
可惜我无法得到 Adafruit_SSD1306.h 文件，谢谢你能给一份
直接打开Arduino IDE 项目-加载库-管理库右边搜索就好了可以直接下载
有可能是中断冲突。
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