{"id":10021255,"date":"2026-02-15T21:22:39","date_gmt":"2026-02-15T13:22:39","guid":{"rendered":"https:\/\/itmax.cn\/?p=10021255"},"modified":"2026-02-15T21:22:39","modified_gmt":"2026-02-15T13:22:39","slug":"%e3%80%90%e5%85%8d%e8%b4%b9%e5%bc%80%e6%ba%90%e3%80%91stm32%e4%b8%b2%e8%a1%8c%e9%a9%b1%e5%8a%a8lcd12864%e6%98%be%e7%a4%ba%e6%ad%a3%e5%bc%a6%e5%87%bd%e6%95%b0-%e6%b3%a2%e5%bd%a2%e5%8f%af%e8%a7%86","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10021255","title":{"rendered":"\u3010\u514d\u8d39\u5f00\u6e90\u3011stm32\u4e32\u884c\u9a71\u52a8LCD12864\u663e\u793a\u6b63\u5f26\u51fd\u6570 \u6ce2\u5f62\u53ef\u89c6\u5316\u795e\u5668\u5b8c\u6574\u9879\u76ee\u5206\u4eab"},"content":{"rendered":"<h2>\u3010\u514d\u8d39\u5f00\u6e90\u3011stm32\u4e32\u884c\u9a71\u52a8LCD12864\u663e\u793a\u6b63\u5f26\u51fd\u6570 \u6ce2\u5f62\u53ef\u89c6\u5316\u795e\u5668\u5b8c\u6574\u9879\u76ee\u5206\u4eab<\/h2>\n<h3>\u4e00\u3001\u9879\u76ee\u6982\u8ff0<\/h3>\n<p>\u672c\u9879\u76ee\u662f\u4e00\u4e2a\u57fa\u4e8eSTM32\u5fae\u63a7\u5236\u5668\u7684LCD12864\u6db2\u6676\u663e\u793a\u5c4f\u9a71\u52a8\u7a0b\u5e8f\uff0c\u901a\u8fc7\u4e32\u884c\u901a\u4fe1\u65b9\u5f0f\u63a7\u5236LCD12864\u663e\u793a\u5c4f\uff0c\u5b9e\u73b0\u6b63\u5f26\u51fd\u6570\u6ce2\u5f62\u7684\u5b9e\u65f6\u663e\u793a\u3002\u8fd9\u4e2a\u9879\u76ee\u5c06\u6570\u5b66\u51fd\u6570\u53ef\u89c6\u5316\uff0c\u8ba9\u62bd\u8c61\u7684\u6570\u5b66\u6982\u5ff5\u53d8\u5f97\u76f4\u89c2\u53ef\u89c1\uff0c\u662f\u5b66\u4e60STM32\u5d4c\u5165\u5f0f\u5f00\u53d1\u548c\u56fe\u5f62\u663e\u793a\u6280\u672f\u7684\u7edd\u4f73\u5b9e\u8df5\u9879\u76ee\u3002<\/p>\n<p>LCD12864\u662f\u4e00\u6b3e128\u00d764\u70b9\u9635\u7684\u56fe\u5f62\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u5177\u6709\u4f53\u79ef\u5c0f\u3001\u529f\u8017\u4f4e\u3001\u663e\u793a\u5185\u5bb9\u4e30\u5bcc\u7b49\u7279\u70b9\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u3002\u672c\u9879\u76ee\u91c7\u7528\u4e32\u884c\u63a5\u53e3\u65b9\u5f0f\u9a71\u52a8LCD12864\uff0c\u76f8\u6bd4\u5e76\u884c\u63a5\u53e3\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8282\u7701\u66f4\u591a\u7684IO\u5f15\u811a\u8d44\u6e90\uff0c\u975e\u5e38\u9002\u5408\u5f15\u811a\u8d44\u6e90\u6709\u9650\u7684STM32\u5fae\u63a7\u5236\u5668\u4f7f\u7528\u3002<\/p>\n<p>\u6b63\u5f26\u51fd\u6570\u662f\u6570\u5b66\u4e2d\u6700\u57fa\u7840\u7684\u5468\u671f\u51fd\u6570\u4e4b\u4e00\uff0c\u5728\u4fe1\u53f7\u5904\u7406\u3001\u901a\u4fe1\u7cfb\u7edf\u3001\u97f3\u9891\u5904\u7406\u7b49\u9886\u57df\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u901a\u8fc7\u5728LCD12864\u4e0a\u5b9e\u65f6\u663e\u793a\u6b63\u5f26\u6ce2\u5f62\uff0c\u4e0d\u4ec5\u80fd\u591f\u76f4\u89c2\u5730\u5c55\u793a\u6b63\u5f26\u51fd\u6570\u7684\u5468\u671f\u6027\u7279\u5f81\uff0c\u8fd8\u80fd\u5e2e\u52a9\u7406\u89e3\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u7684\u57fa\u672c\u539f\u7406\u3002<\/p>\n<p>\u672c\u9879\u76ee\u7684\u6838\u5fc3\u529f\u80fd\u5305\u62ec\uff1aLCD12864\u7684\u521d\u59cb\u5316\u914d\u7f6e\u3001\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\u7684\u5b9e\u73b0\u3001\u6b63\u5f26\u51fd\u6570\u6570\u636e\u7684\u8ba1\u7b97\u4e0e\u5b58\u50a8\u3001\u6ce2\u5f62\u7ed8\u5236\u7b97\u6cd5\u7684\u5b9e\u73b0\u7b49\u3002\u901a\u8fc7\u8fd9\u4e2a\u9879\u76ee\uff0c\u8bfb\u8005\u53ef\u4ee5\u6df1\u5165\u5b66\u4e60STM32\u7684GPIO\u3001SPI\u901a\u4fe1\u3001\u5b9a\u65f6\u5668\u7b49\u5916\u8bbe\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u638c\u63e1\u56fe\u5f62\u663e\u793a\u7684\u57fa\u672c\u539f\u7406\u548c\u7f16\u7a0b\u6280\u5de7\u3002<\/p>\n<h4>\u6e90\u7801\u5206\u4eab<\/h4>\n<p>\u76f4\u63a5\u653e\u5230\u4e4b\u524d\u5199\u7684\u6587\u7ae0\u91cc\u4e86\uff0c\u514d\u8d39\u5f00\u6e90\uff0c\u4e0b\u8f7d\u5b66\u4e60\u5373\u53ef\u3002<\/p>\n<pre><code class=\"bash\">https:\/\/blog.csdn.net\/weixin_52908342\/article\/details\/158101046<\/code><\/pre>\n<h3>\u4e8c\u3001\u7cfb\u7edf\u8bbe\u8ba1\u6d41\u7a0b\u56fe<\/h3>\n<pre style=\"display:none;\"><code class=\"mermaid\">flowchart TD\n    A[\u7cfb\u7edf\u542f\u52a8] --&gt; B[STM32\u521d\u59cb\u5316]\n    B --&gt; C[GPIO\u65f6\u949f\u914d\u7f6e]\n    C --&gt; D[SPI\u63a5\u53e3\u914d\u7f6e]\n    D --&gt; E[LCD12864\u521d\u59cb\u5316]\n    E --&gt; F[\u6e05\u5c4f\u64cd\u4f5c]\n    F --&gt; G[\u6b63\u5f26\u51fd\u6570\u6570\u636e\u8ba1\u7b97]\n    G --&gt; H[\u6ce2\u5f62\u7ed8\u5236]\n    H --&gt; I{\u662f\u5426\u7ee7\u7eed\u663e\u793a}\n    I --&gt;|\u662f| G\n    I --&gt;|\u5426| J[\u7ed3\u675f]\n    \n    style A fill:#e1f5ff\n    style B fill:#fff4e1\n    style C fill:#fff4e1\n    style D fill:#fff4e1\n    style E fill:#e1ffe1\n    style F fill:#e1ffe1\n    style G fill:#ffe1f5\n    style H fill:#ffe1f5\n    style I fill:#f5ffe1\n    style J fill:#ffcccc<\/code><\/pre>\n<h3>\u4e09\u3001\u786c\u4ef6\u8bbe\u8ba1<\/h3>\n<h4>3.1 STM32\u5fae\u63a7\u5236\u5668\u9009\u578b<\/h4>\n<p>\u672c\u9879\u76ee\u91c7\u7528STM32F103\u7cfb\u5217\u5fae\u63a7\u5236\u5668\u4f5c\u4e3a\u4e3b\u63a7\u82af\u7247\uff0c\u8be5\u7cfb\u5217\u57fa\u4e8eARM Cortex-M3\u5185\u6838\uff0c\u5177\u6709\u4e30\u5bcc\u7684\u5916\u8bbe\u8d44\u6e90\u548c\u826f\u597d\u7684\u6027\u4ef7\u6bd4\u3002STM32F103C8T6\u662f\u6700\u5e38\u7528\u7684\u578b\u53f7\uff0c\u5177\u670964KB Flash\u5b58\u50a8\u5668\u300120KB SRAM\u300148\u4e2aGPIO\u5f15\u811a\uff0c\u5b8c\u5168\u6ee1\u8db3\u672c\u9879\u76ee\u7684\u9700\u6c42\u3002<\/p>\n<p>STM32F103\u7684\u4e3b\u8981\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>72MHz\u7cfb\u7edf\u65f6\u949f\u9891\u7387<\/li>\n<li>3\u4e2aSPI\u63a5\u53e3<\/li>\n<li>2\u4e2aI2C\u63a5\u53e3<\/li>\n<li>5\u4e2aUSART\/UART\u63a5\u53e3<\/li>\n<li>3\u4e2a12\u4f4dADC<\/li>\n<li>\u591a\u4e2a\u5b9a\u65f6\u5668<\/li>\n<li>\u4e30\u5bcc\u7684GPIO\u914d\u7f6e\u9009\u9879<\/li>\n<\/ul>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047612422\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p>\n<h4>3.2 LCD12864\u6db2\u6676\u663e\u793a\u5c4f<\/h4>\n<p>LCD12864\u662f\u4e00\u6b3e128\u00d764\u70b9\u9635\u7684\u56fe\u5f62\u578b\u6db2\u6676\u663e\u793a\u6a21\u5757\uff0c\u5185\u7f6eST7920\u63a7\u5236\u5668\uff0c\u652f\u6301\u4e32\u884c\u548c\u5e76\u884c\u4e24\u79cd\u901a\u4fe1\u65b9\u5f0f\u3002\u4e3b\u8981\u6280\u672f\u53c2\u6570\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5206\u8fa8\u7387\uff1a128\u00d764\u70b9\u9635<\/li>\n<li>\u663e\u793a\u989c\u8272\uff1a\u9ec4\u7eff\u5e95\u9ed1\u5b57\u6216\u84dd\u5e95\u767d\u5b57<\/li>\n<li>\u5de5\u4f5c\u7535\u538b\uff1a5V<\/li>\n<li>\u5de5\u4f5c\u7535\u6d41\uff1a\u7ea62-3mA<\/li>\n<li>\u89c6\u89d2\uff1a6\u70b9\u949f\u65b9\u5411<\/li>\n<li>\u63a7\u5236\u5668\uff1aST7920<\/li>\n<li>\u5185\u7f6e\u5b57\u5e93\uff1a8192\u4e2a\u4e2d\u6587\u6c49\u5b57\uff0816\u00d716\u70b9\u9635\uff09<\/li>\n<li>\u5185\u7f6eROM\uff1a128\u4e2a\u5b57\u7b26\uff088\u00d716\u70b9\u9635\uff09<\/li>\n<\/ul>\n<h4>3.3 \u786c\u4ef6\u8fde\u63a5\u65b9\u6848<\/h4>\n<p>\u91c7\u7528\u4e32\u884c\u63a5\u53e3\u65b9\u5f0f\u8fde\u63a5STM32\u548cLCD12864\uff0c\u9700\u8981\u4ee5\u4e0b\u8fde\u63a5\uff1a<\/p>\n<ul>\n<li>LCD12864\u7684VSS\u5f15\u811a\u8fde\u63a5GND<\/li>\n<li>LCD12864\u7684VDD\u5f15\u811a\u8fde\u63a55V\u7535\u6e90<\/li>\n<li>LCD12864\u7684V0\u5f15\u811a\u8fde\u63a5\u7535\u4f4d\u5668\u7528\u4e8e\u5bf9\u6bd4\u5ea6\u8c03\u8282<\/li>\n<li>LCD12864\u7684RS(CS)\u5f15\u811a\u8fde\u63a5STM32\u7684PA0<\/li>\n<li>LCD12864\u7684RW(SID)\u5f15\u811a\u8fde\u63a5STM32\u7684PA1<\/li>\n<li>LCD12864\u7684E(SCLK)\u5f15\u811a\u8fde\u63a5STM32\u7684PA2<\/li>\n<li>LCD12864\u7684PSB\u5f15\u811a\u8fde\u63a5GND\uff08\u9009\u62e9\u4e32\u884c\u6a21\u5f0f\uff09<\/li>\n<li>LCD12864\u7684RST\u5f15\u811a\u8fde\u63a5STM32\u7684PA3<\/li>\n<li>LCD12864\u7684BLA\u5f15\u811a\u8fde\u63a55V\uff08\u80cc\u5149\u6b63\u6781\uff09<\/li>\n<li>LCD12864\u7684BLK\u5f15\u811a\u8fde\u63a5GND\uff08\u80cc\u5149\u8d1f\u6781\uff09<\/li>\n<\/ul>\n<h3>\u56db\u3001\u8f6f\u4ef6\u8bbe\u8ba1<\/h3>\n<h4>4.1 \u7cfb\u7edf\u67b6\u6784\u8bbe\u8ba1<\/h4>\n<p>\u8f6f\u4ef6\u7cfb\u7edf\u91c7\u7528\u6a21\u5757\u5316\u8bbe\u8ba1\uff0c\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u6a21\u5757\uff1a<\/p>\n<ol>\n<li><strong>\u7cfb\u7edf\u521d\u59cb\u5316\u6a21\u5757<\/strong>\uff1a\u8d1f\u8d23STM32\u7cfb\u7edf\u65f6\u949f\u3001GPIO\u3001SPI\u7b49\u5916\u8bbe\u7684\u521d\u59cb\u5316\u914d\u7f6e<\/li>\n<li><strong>LCD12864\u9a71\u52a8\u6a21\u5757<\/strong>\uff1a\u5b9e\u73b0LCD12864\u7684\u5e95\u5c42\u9a71\u52a8\u51fd\u6570\uff0c\u5305\u62ec\u5199\u547d\u4ee4\u3001\u5199\u6570\u636e\u3001\u6e05\u5c4f\u7b49\u64cd\u4f5c<\/li>\n<li><strong>\u56fe\u5f62\u7ed8\u5236\u6a21\u5757<\/strong>\uff1a\u5b9e\u73b0\u57fa\u672c\u7684\u56fe\u5f62\u7ed8\u5236\u529f\u80fd\uff0c\u5982\u753b\u70b9\u3001\u753b\u7ebf\u3001\u753b\u77e9\u5f62\u7b49<\/li>\n<li><strong>\u6ce2\u5f62\u663e\u793a\u6a21\u5757<\/strong>\uff1a\u5b9e\u73b0\u6b63\u5f26\u51fd\u6570\u6ce2\u5f62\u7684\u8ba1\u7b97\u548c\u663e\u793a<\/li>\n<li><strong>\u4e3b\u63a7\u6a21\u5757<\/strong>\uff1a\u534f\u8c03\u5404\u6a21\u5757\u7684\u5de5\u4f5c\uff0c\u5b9e\u73b0\u7cfb\u7edf\u7684\u6574\u4f53\u529f\u80fd<\/li>\n<\/ol>\n<h4>4.2 LCD12864\u9a71\u52a8\u7a0b\u5e8f<\/h4>\n<p>LCD12864\u7684\u4e32\u884c\u901a\u4fe1\u534f\u8bae\u91c7\u7528\u4e09\u7ebf\u5236\uff08CS\u3001SID\u3001SCLK\uff09\uff0c\u6570\u636e\u4f20\u8f93\u65f6\u5e8f\u4e25\u683c\u9075\u5faaST7920\u63a7\u5236\u5668\u7684\u89c4\u8303\u3002\u4ee5\u4e0b\u662fLCD12864\u521d\u59cb\u5316\u7684\u6838\u5fc3\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"c\">#include &quot;stm32f10x.h&quot;\n\n#define LCD_CS_PIN    GPIO_Pin_0\n#define LCD_SID_PIN   GPIO_Pin_1\n#define LCD_SCLK_PIN  GPIO_Pin_2\n#define LCD_RST_PIN   GPIO_Pin_3\n#define LCD_PORT      GPIOA\n\nvoid LCD_GPIO_Init(void)\n{\n    GPIO_InitTypeDef GPIO_InitStructure;\n    \n    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);\n    \n    GPIO_InitStructure.GPIO_Pin = LCD_CS_PIN | LCD_SID_PIN | LCD_SCLK_PIN | LCD_RST_PIN;\n    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;\n    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;\n    GPIO_Init(LCD_PORT, &amp;GPIO_InitStructure);\n    \n    GPIO_SetBits(LCD_PORT, LCD_CS_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_RST_PIN);\n}\n\nvoid LCD_WriteByte(uint8_t data, uint8_t rs)\n{\n    uint8_t i;\n    uint8_t temp;\n    \n    GPIO_ResetBits(LCD_PORT, LCD_CS_PIN);\n    \n    for(i = 0; i &lt; 5; i++) {\n        GPIO_ResetBits(LCD_PORT, LCD_SCLK_PIN);\n        GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n        GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    }\n    \n    GPIO_ResetBits(LCD_PORT, LCD_SCLK_PIN);\n    if(rs) GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n    else GPIO_ResetBits(LCD_PORT, LCD_SID_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    \n    GPIO_ResetBits(LCD_PORT, LCD_SCLK_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n    GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    \n    for(i = 0; i &lt; 4; i++) {\n        temp = data;\n        temp = temp &lt;&lt; i;\n        temp = temp &amp; 0x80;\n        \n        GPIO_ResetBits(LCD_PORT, LCD_SCLK_PIN);\n        if(temp) GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n        else GPIO_ResetBits(LCD_PORT, LCD_SID_PIN);\n        GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    }\n    \n    for(i = 4; i &lt; 8; i++) {\n        temp = data;\n        temp = temp &lt;&lt; i;\n        temp = temp &amp; 0x80;\n        \n        GPIO_ResetBits(LCD_PORT, LCD_SCLK_PIN);\n        if(temp) GPIO_SetBits(LCD_PORT, LCD_SID_PIN);\n        else GPIO_ResetBits(LCD_PORT, LCD_SID_PIN);\n        GPIO_SetBits(LCD_PORT, LCD_SCLK_PIN);\n    }\n    \n    GPIO_SetBits(LCD_PORT, LCD_CS_PIN);\n}\n\nvoid LCD_WriteCommand(uint8_t cmd)\n{\n    LCD_WriteByte(0xf8, 0);\n    LCD_WriteByte(cmd &amp; 0xf0, 1);\n    LCD_WriteByte((cmd &lt;&lt; 4) &amp; 0xf0, 1);\n}\n\nvoid LCD_WriteData(uint8_t data)\n{\n    LCD_WriteByte(0xfa, 0);\n    LCD_WriteByte(data &amp; 0xf0, 1);\n    LCD_WriteByte((data &lt;&lt; 4) &amp; 0xf0, 1);\n}\n\nvoid LCD_Init(void)\n{\n    LCD_GPIO_Init();\n    \n    GPIO_ResetBits(LCD_PORT, LCD_RST_PIN);\n    Delay_ms(10);\n    GPIO_SetBits(LCD_PORT, LCD_RST_PIN);\n    Delay_ms(10);\n    \n    LCD_WriteCommand(0x30);\n    Delay_ms(5);\n    LCD_WriteCommand(0x30);\n    Delay_ms(5);\n    LCD_WriteCommand(0x0c);\n    Delay_ms(5);\n    LCD_WriteCommand(0x01);\n    Delay_ms(5);\n    LCD_WriteCommand(0x06);\n    Delay_ms(5);\n}\n\nvoid LCD_Clear(void)\n{\n    LCD_WriteCommand(0x30);\n    LCD_WriteCommand(0x01);\n    Delay_ms(10);\n}<\/code><\/pre>\n<h4>4.3 \u6b63\u5f26\u51fd\u6570\u6ce2\u5f62\u7ed8\u5236<\/h4>\n<p>\u6b63\u5f26\u51fd\u6570\u6ce2\u5f62\u7684\u7ed8\u5236\u9700\u8981\u5c06\u6570\u5b66\u4e0a\u7684\u8fde\u7eed\u51fd\u6570\u8f6c\u6362\u4e3a\u79bb\u6563\u7684\u70b9\u9635\u663e\u793a\u3002LCD12864\u7684\u5206\u8fa8\u7387\u4e3a128\u00d764\uff0c\u6211\u4eec\u9700\u8981\u5728\u8fd9\u4e2a\u6709\u9650\u7684\u50cf\u7d20\u7a7a\u95f4\u5185\u7ed8\u5236\u51fa\u5e73\u6ed1\u7684\u6b63\u5f26\u6ce2\u5f62\u3002<\/p>\n<p>\u6b63\u5f26\u51fd\u6570\u7684\u57fa\u672c\u516c\u5f0f\u4e3a\uff1ay = A \u00d7 sin(\u03c9x + \u03c6) + k<\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>A\uff1a\u632f\u5e45\uff0c\u51b3\u5b9a\u6ce2\u5f62\u7684\u9ad8\u5ea6<\/li>\n<li>\u03c9\uff1a\u89d2\u9891\u7387\uff0c\u51b3\u5b9a\u6ce2\u5f62\u7684\u5468\u671f<\/li>\n<li>\u03c6\uff1a\u521d\u76f8\u4f4d\uff0c\u51b3\u5b9a\u6ce2\u5f62\u7684\u8d77\u59cb\u4f4d\u7f6e<\/li>\n<li>k\uff1a\u76f4\u6d41\u504f\u7f6e\uff0c\u51b3\u5b9a\u6ce2\u5f62\u7684\u5782\u76f4\u4f4d\u7f6e<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u6b63\u5f26\u6ce2\u5f62\u7ed8\u5236\u7684\u6838\u5fc3\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"c\">#include &lt;math.h&gt;\n\n#define PI 3.14159265358979323846\n#define LCD_WIDTH  128\n#define LCD_HEIGHT 64\n\nvoid LCD_DrawPoint(uint8_t x, uint8_t y)\n{\n    uint8_t x_addr, y_addr;\n    uint8_t bit_data;\n    \n    if(x &gt;= LCD_WIDTH || y &gt;= LCD_HEIGHT) return;\n    \n    y_addr = y \/ 8;\n    bit_data = 0x01 &lt;&lt; (y % 8);\n    \n    LCD_WriteCommand(0x80 | y_addr);\n    LCD_WriteCommand(0x80 | x);\n    LCD_WriteData(bit_data);\n}\n\nvoid LCD_DrawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2)\n{\n    int dx, dy, sx, sy, err, e2;\n    \n    dx = abs(x2 - x1);\n    dy = abs(y2 - y1);\n    \n    if(x1 &lt; x2) sx = 1;\n    else sx = -1;\n    \n    if(y1 &lt; y2) sy = 1;\n    else sy = -1;\n    \n    err = dx - dy;\n    \n    while(1) {\n        LCD_DrawPoint(x1, y1);\n        \n        if(x1 == x2 &amp;&amp; y1 == y2) break;\n        \n        e2 = 2 * err;\n        \n        if(e2 &gt; -dy) {\n            err -= dy;\n            x1 += sx;\n        }\n        \n        if(e2 &lt; dx) {\n            err += dx;\n            y1 += sy;\n        }\n    }\n}\n\nvoid LCD_DrawSineWave(void)\n{\n    uint8_t x, y;\n    float angle;\n    float amplitude = 25.0;\n    float frequency = 2.0;\n    float offset = 32.0;\n    \n    LCD_Clear();\n    \n    LCD_WriteCommand(0x34);\n    LCD_WriteCommand(0x36);\n    \n    for(x = 0; x &lt; LCD_WIDTH; x++) {\n        angle = (float)x * frequency * 2.0 * PI \/ LCD_WIDTH;\n        y = (uint8_t)(offset + amplitude * sin(angle));\n        \n        LCD_DrawPoint(x, y);\n        \n        if(x &gt; 0) {\n            uint8_t prev_x = x - 1;\n            float prev_angle = (float)prev_x * frequency * 2.0 * PI \/ LCD_WIDTH;\n            uint8_t prev_y = (uint8_t)(offset + amplitude * sin(prev_angle));\n            LCD_DrawLine(prev_x, prev_y, x, y);\n        }\n    }\n    \n    LCD_WriteCommand(0x30);\n}\n\nvoid LCD_DisplayText(uint8_t x, uint8_t y, char *str)\n{\n    LCD_WriteCommand(0x80 | y);\n    LCD_WriteCommand(0x80 | x);\n    \n    while(*str != '\/0') {\n        LCD_WriteData(*str);\n        str++;\n    }\n}<\/code><\/pre>\n<h4>4.4 \u4e3b\u7a0b\u5e8f\u8bbe\u8ba1<\/h4>\n<p>\u4e3b\u7a0b\u5e8f\u8d1f\u8d23\u7cfb\u7edf\u7684\u521d\u59cb\u5316\u548c\u529f\u80fd\u534f\u8c03\uff0c\u901a\u8fc7\u5b9a\u65f6\u5668\u5b9e\u73b0\u6ce2\u5f62\u7684\u52a8\u6001\u5237\u65b0\uff0c\u6216\u8005\u901a\u8fc7\u6309\u952e\u5b9e\u73b0\u4e0d\u540c\u53c2\u6570\u6ce2\u5f62\u7684\u5207\u6362\u3002<\/p>\n<pre><code class=\"c\">int main(void)\n{\n    SystemInit();\n    \n    LCD_Init();\n    LCD_Clear();\n    \n    LCD_DisplayText(0, 0, &quot;Sine Wave Demo&quot;);\n    Delay_ms(1000);\n    \n    LCD_DrawSineWave();\n    \n    LCD_DisplayText(0, 2, &quot;y=A*sin(wx+phi)+k&quot;);\n    LCD_DisplayText(0, 4, &quot;A=25, w=2, phi=0&quot;);\n    LCD_DisplayText(0, 6, &quot;k=32&quot;);\n    \n    while(1) {\n        Delay_ms(1000);\n    }\n}\n\nvoid Delay_ms(uint32_t ms)\n{\n    uint32_t i, j;\n    for(i = 0; i &lt; ms; i++)\n        for(j = 0; j &lt; 9000; j++);\n}<\/code><\/pre>\n<h3>\u4e94\u3001\u5173\u952e\u6280\u672f\u70b9\u5206\u6790<\/h3>\n<h4>5.1 \u4e32\u884c\u901a\u4fe1\u65f6\u5e8f<\/h4>\n<p>LCD12864\u7684\u4e32\u884c\u901a\u4fe1\u91c7\u7528SPI\u65f6\u5e8f\uff0c\u4f46\u4e0e\u6807\u51c6SPI\u6709\u6240\u4e0d\u540c\u3002ST7920\u63a7\u5236\u5668\u5b9a\u4e49\u4e86\u7279\u6b8a\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u6bcf\u4e2a\u5b57\u8282\u4f20\u8f93\u9700\u8981\u5148\u53d1\u90015\u4e2a\u540c\u6b65\u5b57\u8282\uff0c\u7136\u540e\u53d1\u9001RS\u4f4d\u548c\u6570\u636e\u4f4d\u3002\u8fd9\u79cd\u8bbe\u8ba1\u867d\u7136\u589e\u52a0\u4e86\u901a\u4fe1\u5f00\u9500\uff0c\u4f46\u63d0\u9ad8\u4e86\u901a\u4fe1\u7684\u53ef\u9760\u6027\u3002<\/p>\n<h4>5.2 \u56fe\u5f62\u7ed8\u5236\u7b97\u6cd5<\/h4>\n<p>\u5728\u70b9\u9635\u663e\u793a\u5c4f\u4e0a\u7ed8\u5236\u5e73\u6ed1\u66f2\u7ebf\u9700\u8981\u91c7\u7528\u9002\u5f53\u7684\u7b97\u6cd5\u3002\u672c\u9879\u76ee\u4f7f\u7528Bresenham\u76f4\u7ebf\u7b97\u6cd5\u6765\u8fde\u63a5\u79bb\u6563\u7684\u6b63\u5f26\u51fd\u6570\u70b9\uff0c\u8fd9\u79cd\u65b9\u6cd5\u8ba1\u7b97\u6548\u7387\u9ad8\uff0c\u9002\u5408\u5728\u8d44\u6e90\u6709\u9650\u7684\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528\u3002<\/p>\n<h4>5.3 \u6d6e\u70b9\u6570\u8fd0\u7b97\u4f18\u5316<\/h4>\n<p>STM32F103\u5177\u6709\u786c\u4ef6\u6d6e\u70b9\u8fd0\u7b97\u5355\u5143\uff0c\u4f46\u4e3a\u4e86\u63d0\u9ad8\u8fd0\u7b97\u6548\u7387\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5b9a\u70b9\u6570\u8fd0\u7b97\u4ee3\u66ff\u6d6e\u70b9\u6570\u8fd0\u7b97\uff0c\u6216\u8005\u4f7f\u7528\u67e5\u8868\u6cd5\u9884\u5148\u8ba1\u7b97\u6b63\u5f26\u51fd\u6570\u503c\u3002<\/p>\n<h4>5.4 \u663e\u793a\u7f13\u51b2\u533a\u7ba1\u7406<\/h4>\n<p>\u4e3a\u4e86\u63d0\u9ad8\u663e\u793a\u6548\u7387\uff0c\u53ef\u4ee5\u5efa\u7acb\u663e\u793a\u7f13\u51b2\u533a\uff0c\u5148\u5728\u5185\u5b58\u4e2d\u5b8c\u6210\u56fe\u5f62\u7ed8\u5236\uff0c\u7136\u540e\u4e00\u6b21\u6027\u66f4\u65b0\u5230LCD\u663e\u793a\u5c4f\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u51cf\u5c11LCD\u7684\u8bbf\u95ee\u6b21\u6570\uff0c\u63d0\u9ad8\u663e\u793a\u901f\u5ea6\u3002<\/p>\n<h3>\u516d\u3001\u9879\u76ee\u6269\u5c55\u4e0e\u5e94\u7528<\/h3>\n<h4>6.1 \u529f\u80fd\u6269\u5c55<\/h4>\n<ol>\n<li><strong>\u591a\u6ce2\u5f62\u663e\u793a<\/strong>\uff1a\u6269\u5c55\u652f\u6301\u4f59\u5f26\u51fd\u6570\u3001\u65b9\u6ce2\u3001\u4e09\u89d2\u6ce2\u7b49\u591a\u79cd\u6ce2\u5f62<\/li>\n<li><strong>\u53c2\u6570\u8c03\u8282<\/strong>\uff1a\u901a\u8fc7\u6309\u952e\u6216\u7535\u4f4d\u5668\u5b9e\u65f6\u8c03\u8282\u6ce2\u5f62\u7684\u632f\u5e45\u3001\u9891\u7387\u3001\u76f8\u4f4d\u7b49\u53c2\u6570<\/li>\n<li><strong>\u52a8\u6001\u663e\u793a<\/strong>\uff1a\u5b9e\u73b0\u6ce2\u5f62\u7684\u6eda\u52a8\u663e\u793a\uff0c\u6a21\u62df\u793a\u6ce2\u5668\u529f\u80fd<\/li>\n<li><strong>\u6570\u636e\u5b58\u50a8<\/strong>\uff1a\u5c06\u6ce2\u5f62\u6570\u636e\u5b58\u50a8\u5230SD\u5361\uff0c\u5b9e\u73b0\u6570\u636e\u8bb0\u5f55\u529f\u80fd<\/li>\n<\/ol>\n<h4>6.2 \u5e94\u7528\u573a\u666f<\/h4>\n<ol>\n<li><strong>\u6559\u5b66\u6f14\u793a<\/strong>\uff1a\u7528\u4e8e\u6570\u5b66\u548c\u7269\u7406\u6559\u5b66\uff0c\u76f4\u89c2\u5c55\u793a\u5468\u671f\u51fd\u6570\u7684\u7279\u5f81<\/li>\n<li><strong>\u4fe1\u53f7\u53d1\u751f\u5668<\/strong>\uff1a\u914d\u5408DAC\u82af\u7247\uff0c\u5b9e\u73b0\u53ef\u8c03\u53c2\u6570\u7684\u4fe1\u53f7\u53d1\u751f\u529f\u80fd<\/li>\n<li><strong>\u4eea\u5668\u663e\u793a<\/strong>\uff1a\u4f5c\u4e3a\u5404\u79cd\u6d4b\u91cf\u4eea\u5668\u7684\u663e\u793a\u754c\u9762<\/li>\n<li><strong>\u5de5\u4e1a\u63a7\u5236<\/strong>\uff1a\u7528\u4e8e\u5de5\u4e1a\u81ea\u52a8\u5316\u8bbe\u5907\u7684\u53c2\u6570\u663e\u793a\u548c\u76d1\u63a7<\/li>\n<\/ol>\n<h3>\u4e03\u3001\u603b\u7ed3<\/h3>\n<p>\u672c\u9879\u76ee\u901a\u8fc7STM32\u9a71\u52a8LCD12864\u663e\u793a\u6b63\u5f26\u51fd\u6570\u6ce2\u5f62\uff0c\u5c55\u793a\u4e86\u5d4c\u5165\u5f0f\u7cfb\u7edf\u56fe\u5f62\u663e\u793a\u7684\u57fa\u672c\u539f\u7406\u548c\u5b9e\u73b0\u65b9\u6cd5\u3002\u9879\u76ee\u6db5\u76d6\u4e86\u786c\u4ef6\u8bbe\u8ba1\u3001\u8f6f\u4ef6\u7f16\u7a0b\u3001\u7b97\u6cd5\u5b9e\u73b0\u7b49\u591a\u4e2a\u65b9\u9762\u7684\u77e5\u8bc6\uff0c\u662f\u5b66\u4e60STM32\u5d4c\u5165\u5f0f\u5f00\u53d1\u7684\u7efc\u5408\u6027\u5b9e\u8df5\u9879\u76ee\u3002<\/p>\n<p>\u901a\u8fc7\u672c\u9879\u76ee\u7684\u5b66\u4e60\uff0c\u8bfb\u8005\u53ef\u4ee5\u638c\u63e1STM32\u7684GPIO\u914d\u7f6e\u3001\u4e32\u884c\u901a\u4fe1\u3001\u5b9a\u65f6\u5668\u4f7f\u7528\u7b49\u57fa\u672c\u6280\u80fd\uff0c\u7406\u89e3\u56fe\u5f62\u663e\u793a\u7684\u539f\u7406\u548c\u65b9\u6cd5\uff0c\u4e3a\u540e\u7eed\u66f4\u590d\u6742\u7684\u9879\u76ee\u5f00\u53d1\u6253\u4e0b\u575a\u5b9e\u7684\u57fa\u7840\u3002\u9879\u76ee\u7684\u4ee3\u7801\u7ed3\u6784\u6e05\u6670\uff0c\u529f\u80fd\u6a21\u5757\u5316\uff0c\u4fbf\u4e8e\u5b66\u4e60\u548c\u6269\u5c55\u3002<\/p>\n<p>\u9879\u76ee\u91c7\u7528\u5f00\u6e90\u65b9\u5f0f\u53d1\u5e03\uff0c\u6b22\u8fce\u5e7f\u5927\u7231\u597d\u8005\u5b66\u4e60\u4ea4\u6d41\uff0c\u5171\u540c\u8fdb\u6b65\u3002\u5e0c\u671b\u8fd9\u4e2a\u9879\u76ee\u80fd\u591f\u5e2e\u52a9\u66f4\u591a\u4eba\u4e86\u89e3\u5d4c\u5165\u5f0f\u5f00\u53d1\u7684\u9b45\u529b\uff0c\u6fc0\u53d1\u5bf9\u7535\u5b50\u6280\u672f\u7684\u5174\u8da3\u548c\u70ed\u60c5\u3002<\/p>\n<h3>\u516b\u3001\u53c2\u8003\u8d44\u6599<\/h3>\n<ol>\n<li>ST7920 LCD\u63a7\u5236\u5668\u6570\u636e\u624b\u518c<\/li>\n<li>STM32F103\u53c2\u8003\u624b\u518c<\/li>\n<li>LCD12864\u6db2\u6676\u663e\u793a\u5c4f\u6280\u672f\u89c4\u683c\u4e66<\/li>\n<li>\u5d4c\u5165\u5f0f\u7cfb\u7edf\u8bbe\u8ba1\u4e0e\u5e94\u7528<\/li>\n<li>\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u57fa\u7840<br \/><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047612423\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" title=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" loading=\"lazy\"><\/li>\n<\/ol>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000047612420\">https:\/\/segmentfault.com\/a\/1190000047612420<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u514d\u8d39\u5f00\u6e90\u3011stm32\u4e32\u884c\u9a71\u52a8LCD12864\u663e\u793a\u6b63\u5f26\u51fd\u6570 \u6ce2\u5f62\u53ef\u89c6\u5316\u795e\u5668\u5b8c\u6574\u9879\u76ee\u5206\u4eab \u4e00\u3001\u9879\u76ee\u6982\u8ff0 \u672c\u9879\u76ee\u662f [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10021255","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10021255"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021255\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10021255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10021255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10021255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}