oled资料

OLED资料整理

介绍:oled 即有机发光二极管,又称为有机电激光显示
		采用很薄的有机材料图层和玻璃基层,当电流通过时,有机材料自己发光,无需背光源
通讯模式:4 线 SPI、IIC 接口
模块分辨率为128×64

SPI 电路连接

GND:电源地
VCC:2.2V~5.5V
SCL(D0):CLK 时钟 (高电平 2.2V~5.5V)
SDA(D1):MOSI 数据(高电平 2.2V~5.5V)
RST:复位(高电平 2.2V~5.5V)
D/C:数据/命令(高电平 2.2V~5.5V)
兼容 3.3V 和 5V 控制芯片的 I/O 电平(无需任何设置,直接兼容)

IIC 电路连接

GND: 电源地
VCC: 2.2V~5.5V
SCL: CLK 时钟 (高电平 2.2V~5.5V)
SDA: MOSI 数据 (高电平 2.2V~5.5V)
Pin Number Symbol I/O Function P Po o we er r S Su up pp pl ly y 9 VDD P P Po o we er r S Su up pp pl ly y f fo or r L Lo og gi ic c This is a voltage supply pin. It must be connected to external source. 8 VSS P G Gr ro ou un nd d o of f L Lo og gi ic c C Ci ir rc cu ui it t This is a ground pin. It acts as a reference for the logic pins. It must be connected to external ground. 28 VCC P P Po o we er r S Su up pp pl ly y f fo or r OE EL L P Pa an ne el l This is the most positive voltage supply pin of the chip. A stabilization capacitor should be connected between this pin and V SS when the converter is used. It must be connected to external source when the converter is not used. 29 VLSS P G Gr ro ou un nd d o of f A An na al lo og g C Ci ir rc cu ui it t This is an analog ground pin. It should be connected to V SS externally. D Dr ri iv ve er r 26 IREF I C Cu ur rr re en nt t R Re ef fe er re en nc ce e f fo or r B Br ri ig gh ht tn ne es ss s A Ad dj ju us st t me en nt t This pin is segment current reference pin. A resistor should be connected between this pin and V SS . Set the current at 12.5μA maximum. 27 VCOMH O V Vo ol lt ta ag ge e Ou ut tp pu ut t Hi ig gh h L Le ev ve el l f fo or r C C O M S Si ig gn na al l This pin is the input pin for the voltage output high level for COM signals. A capacitor should be connected between this pin and V SS . D DC C/ /D DC C C Co on nv ve er rt te er r 6 VDDB P P Po o we er r S Su up pp pl ly y f fo or r DC C/ / DC C C Co on nv ve er rt te er r C Ci ir rc cu ui it t This is the power supply pin for the internal buffer of the DC/DC voltage converter. It must be connected to external source when the converter is used. It should be connected to V DD when the converter is not used. 4 / 5 2 / 3 C1P / C1N C2P / C2N I P Po os si it ti iv ve e T Te er r mi in na al l o of f t th he e F Fl ly yi in ng g I In nv ve er rt ti in ng g C Ca ap pa ac ci it to or r Ne eg ga at ti iv ve e T Te er r mi in na al l o of f t th he e F Fl ly yi in ng g B Bo oo os st t C Ca ap pa ac ci it to or r The charge-pump capacitors are required between the terminals. They must be floated when the converter is not used. I In nt te er rf fa ac ce e 10 11 12 BS0 BS1 BS2 I C Co o m mu un ni ic ca at ti in ng g P Pr ro ot to oc co ol l S Se el le ec ct t These pins are MCU interface selection input. See the following table: BS0 BS1 BS2 I 2 C 0 1 0 3-wire SPI 1 0 0 4-wire SPI 0 0 0 8-bit 68XX Parallel 0 0 1 8-bit 80XX Parallel 0 1 1 14 RES# I P Po o we er r R Re es se et t f fo or r C Co on nt tr ro ol ll le er r a an nd d Dr ri iv ve er r This pin is reset signal input. When the pin is low, initialization of the chip is executed. Keep this pin pull high during normal operation. 13 CS# I C Ch hi ip p S Se el le ec ct t This pin is the chip select input. The chip is enabled for MCU communication only when CS# is pulled low. 15 D/C# I Da at ta a/ /C Co o m ma an nd d C Co on nt tr ro ol l This pin is Data/Command control pin. When the pin is pulled high, the input at D7~D0 is treated as display data. When the pin is pulled low, the input at D7~D0 will be transferred to the command register. When the pin is pulled high and serial interface mode is selected, the data at SDIN will be interpreted as data. When it is pulled low, the data at SDIN will be transferred to the command register. In I 2 C mode, this pin acts as SA0 for slave address selection. For detail relationship to MCU interface signals, please refer to the Timing Characteristics Diagrams. 17 E/RD# I R Re ea ad d/ / Wr ri it te e E En na ab bl le e o or r R Re ea ad d This pin is MCU interface input. When interfacing to a 68XX-series microprocessor, this pin will be used as the Enable (E) signal. Read/write operation is initiated when this pin is pulled high and the CS# is pulled low. When connecting to an 80XX-microprocessor, this pin receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and CS# is pulled low. When serial or I 2 C mode is selected, this pin must be connected to V SS . GoldenMorning Electronic 4 1.5 Pin Definition (Continued) Pin Number Symbol I/O Function I In nt te er rf fa ac ce e ( (C Co on nt ti in nu ue ed d) ) 16 R/W# I R Re ea ad d/ / Wr ri it te e S Se el le ec ct t o or r Wr ri it te e This pin is MCU interface input. When interfacing to a 68XX-series microprocessor, this pin will be used as Read/Write (R/W#) selection input. Pull this pin to “High” for read mode and pull it to “Low” for write mode. When 80XX interface mode is selected, this pin will be the Write (WR#) input. Data write operation is initiated when this pin is pulled low and the CS# is pulled low. When serial or I 2 C mode is selected, this pin must be connected to V SS . 18~25 D0~D7 I/O Ho os st t Da at ta a I In np pu ut t/ / Ou ut tp pu ut t B Bu us s These pins are 8-bit bi-directional data bus to be connected to the microprocessor’s data bus. When serial mode is selected, D1 will be the serial data input SDIN and D0 will be the serial clock input SCLK. When I 2 C mode is selected, D2 & D1 should be tired together and serve as SDA out & SDA in in application and D0 is the serial clock input SCL. Unused pins must be connected to V SS except for D2 in serial mode. R Re es se er rv ve e 7 N.C. - R Re es se er rv ve ed d P Pi in n The N.C. pin between function pins are reserved for compatible and flexible design. 1, 30 N.C. (GND) - R Re es se er rv ve ed d P Pi in n ( (S Su up pp po or rt ti in ng g P Pi in n) ) The supporting pins can reduce the influences from stresses on the function pins. These pins must be connected to external ground as the ESD protection circuit.
<think>好的,用户想查找关于4线0.96寸OLED资料、数据手册和驱动教程。先看看用户提供的引用内容。引用3提到SSD1306的驱动手册,IIC接口和引脚信息。引用4里的代码示例是使用STM32的HAL库初始化OLED,显示字符串,涉及GPIO配置。用户提到的4线可能指的是IIC接口,因为IIC通常需要SDA、SCL两根线,加上VCC和GND,总共4线。 首先需要确认4线接口类型,常见的有SPI和IIC两种。根据引用3中的描述,IIC接口需要SDA和SCL,加上电源和地,正好4线。而引用2中的链接是SPI接口的驱动,但用户问题明确提到4线,所以更可能是指IIC。不过需要进一步确认。 接下来,数据手册方面,SSD1306是常用的驱动芯片,应该提供数据手册。驱动教程方面,引用4中的代码示例展示了初始化、显示字符串和刷新屏幕的步骤,可以作为参考。此外,用户可能需要引脚定义和连接方式,比如SDA、SCL、RES等接法,引用3提到RES#用于初始化,IIC需要上拉电阻。 用户可能需要具体的连接示例,比如如何将OLED的4线连接到MCU,如STM32的哪个GPIO。引用4中的代码需要配置MX_GPIO_Init,可能涉及到引脚定义修改。此外,驱动函数如OLED_ShowString的参数解释,坐标位置、字体大小等也是重点。 还要考虑用户可能的开发环境,比如使用STM32CubeMX或直接寄存器编程,驱动代码的移植问题。可能的问题包括初始化失败、显示异常,需要检查IIC地址、时序是否正确。引用1提到显示动画需要更大内存,用户可能后续有更复杂的需求,但当前需要基础驱动资料。 最后,整理资料应包括SSD1306数据手册链接,IIC接口说明,STM32驱动代码示例,常见问题解决方法,以及进一步学习的资源,如显示图形或动画的教程。确保回答覆盖接口定义、硬件连接、驱动步骤、代码示例和调试技巧,帮助用户快速上手。</think>### 关于4线0.96寸OLED的接口资料与驱动教程 #### 一、4线接口定义 4线OLED通常指基于**I²C接口**的模块,包含以下引脚: 1. **VCC**(3.3V/5V) 2. **GND** 3. **SCL**(I²C时钟线) 4. **SDA**(I²C数据线) 部分模块可能包含**RES**(复位引脚),但多数简化设计会通过I²C协议初始化[^3]。 #### 二、关键芯片与数据手册 - **驱动芯片**:SSD1306(主流方案) - **数据手册**:[SSD1306手册](https://www.smart-prototyping.com/image/data/OLED_Module/0.96_OLED_SSD1306_Datasheet.pdf) 包含I²C时序、显存结构、指令集等核心信息[^3]。 #### 三、硬件连接示例(STM32) | OLED引脚 | STM32连接 | 备注 | |----------|-----------|----------------------| | VCC | 3.3V | 需匹配模块电压 | | GND | GND | 共地 | | SCL | PB6 | I²C时钟线(可配置) | | SDA | PB7 | I²C数据线(需上拉) | | RES | PB8 | 可选,部分模块需硬件复位[^4] | #### 四、驱动开发步骤 1. **初始化I²C总线** 配置STM32的I²C外设,设置速率(通常400kHz)和地址(默认0x78/0x7A)[^3]。 2. **OLED初始化序列** 发送SSD1306指令(如关闭显示、设置对比度、扫描方向等): ```c void OLED_Init() { OLED_WriteCmd(0xAE); // 关闭显示 OLED_WriteCmd(0xD5); // 设置时钟分频 OLED_WriteCmd(0x80); // 建议值 // ...其他指令 OLED_WriteCmd(0xAF); // 开启显示 } ``` 3. **显存操作** 通过`0x40`指令写入显存数据,支持逐页或全屏刷新: ```c OLED_ShowString(15, 0, "Hello", 16, 1); // 在(15,0)显示16px字体[^4] ``` #### 五、常见问题与调试 - **无显示**:检查I²C地址、上拉电阻、电源电压。 - **花屏**:确认初始化时序正确,显存刷新函数调用完整[^4]。 - **通信失败**:使用逻辑分析仪抓取I²C波形,验证ACK信号。 #### 六、进阶应用 - **图形显示**:基于`OLED_DrawBMP()`函数实现位图渲染。 - **动画优化**:采用双缓冲机制减少闪烁,需额外显存空间[^1]。 - **低功耗模式**:通过指令`0xAE`关闭显示以降低功耗。
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