你的浏览器版本过低，可能导致网站不能正常访问！
为了你能正常使用网站功能，请使用这些浏览器。

chrome
chrome firefox
firefox safari
safari ie
ie8及以上

IIC通信时，有时候会卡住，

[复制链接]
select326 提问时间：2018-3-13 11:50 /
阅读主题, 点击返回1楼
赞 收藏 评论13 发布时间：2018-3-13 11:50
13个回答
MrJiu 回答时间：2018-3-13 23:40:30
使用模拟完全没问题，个人觉得ST的I2C就应该用模拟的，因为硬件实在是操蛋（曾经的受害者，唉。。。一言难尽，我配置的I2C，使用查询模式，完全没问题，但是，比如用手摸一下总线，就会卡死，卡死的地方是标志位冲突，举个例子，比如标志位显示总线忙，但是实际用示波器测量，完全没问题，这时候，只能重启I2C，即使解决这个问题，但是量产依然出现莫名奇妙的问题）。。。至于你的问题，我觉得是优先级切换的问题，当然了和整个程序设计也有关系，比如刷屏，但是被另外一个任务切换了，但是这个任务需要很长实际才执行完，这时候，有些从机会默认退出通信。。。不过，我觉得还是模拟写的不太好导致的。。。反正我用模拟的，从来不出问题！！！

评分

参与人数 1蝴蝶豆 +4 收起 理由
zero99 + 4

查看全部评分

赞 0 评论
xmstudio 回答时间：2018-3-13 23:58:19
我有一个写好的OLED程序，楼主可以参考一下。这个程序的功能是ADC采样，并且利用ADC噪声产生一个随机数显示在屏幕上，屏幕接的是I2C1。
里面有一些我自己写的函数你应该可以直接拿去用

HAL_I2C_Master_Transmit(&hi2c1, 0x78, OledInitCodes, sizeof(OledInitCodes), 10);是OLED初始化，初始化的代码存在了OledInitCodes这个数组里，0x80代表发送的是指令。

OLED_Clear(void);是清屏

OLED_Print(char *c, uint8_t line);是显示任意ascii字符，这个程序写的是按行显示的，第一个参数是字符指针，可以直接用双引号那种字符串，也可以把要显示的字符先用sprintf写进变量再调用，这两种用法我这个程序都用到了。line是要显示字符的行，一般是从0到6，每行显示16个字符，每行字符占用OLED的两行PAGE
  1. /**
  2.   ******************************************************************************
  3.   * @file           : main.c
  4.   * @brief          : Main program body
  5.   ******************************************************************************
  6.   ** This notice applies to any and all portions of this file
  7.   * that are not between comment pairs USER CODE BEGIN and
  8.   * USER CODE END. Other portions of this file, whether
  9.   * inserted by the user or by software development tools
  10.   * are owned by their respective copyright owners.
  11.   *
  12.   * COPYRIGHT(c) 2018 STMicroelectronics
  13.   *
  14.   * Redistribution and use in source and binary forms, with or without modification,
  15.   * are permitted provided that the following conditions are met:
  16.   *   1. Redistributions of source code must retain the above copyright notice,
  17.   *      this list of conditions and the following disclaimer.
  18.   *   2. Redistributions in binary form must reproduce the above copyright notice,
  19.   *      this list of conditions and the following disclaimer in the documentation
  20.   *      and/or other materials provided with the distribution.
  21.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  22.   *      may be used to endorse or promote products derived from this software
  23.   *      without specific prior written permission.
  24.   *
  25.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  26.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  28.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  29.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  32.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  33.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35.   *
  36.   ******************************************************************************
  37.   */
  38. /* Includes ------------------------------------------------------------------*/
  39. #include "main.h"
  40. #include "stm32f1xx_hal.h"

  42. /* USER CODE BEGIN Includes */

  44. /* USER CODE END Includes */

  46. /* Private variables ---------------------------------------------------------*/
  47. ADC_HandleTypeDef hadc1;

  49. I2C_HandleTypeDef hi2c1;

  51. TIM_HandleTypeDef htim2;

  53. /* USER CODE BEGIN PV */
  54. /* Private variables ---------------------------------------------------------*/
  55. uint8_t ASCII[] =
  56. {
  57.                  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*" ",0*/
  58.                  0x00,0x00,0x00,0xF8,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x17,0x17,0x00,0x00,0x00,/*"!",1*/
  59.                  0x00,0x00,0x78,0x78,0x00,0x78,0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*""",2*/
  60.                  0x00,0x40,0xC0,0xF8,0x78,0xC0,0xF8,0x78,0x02,0x1E,0x1F,0x03,0x1E,0x1F,0x03,0x02,/*"#",3*/
  61.                  0xE0,0xF0,0x10,0x18,0x18,0x10,0x30,0x20,0x08,0x19,0x11,0x71,0x71,0x11,0x1F,0x0E,/*"$",4*/
  62.                  0x10,0x38,0x28,0x38,0x90,0xC0,0x60,0x30,0x08,0x0C,0x06,0x03,0x09,0x1C,0x14,0x1C,/*"%",5*/
  63.                  0x00,0x70,0xF8,0x88,0x08,0x18,0x10,0x00,0x0E,0x1F,0x11,0x11,0x13,0x1E,0x0C,0x1E,/*"&",6*/
  64.                  0x00,0x00,0x00,0x78,0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"'",7*/
  65.                  0x00,0x00,0x00,0xC0,0xF0,0x38,0x08,0x00,0x00,0x00,0x00,0x1F,0x7F,0xE0,0x80,0x00,/*"(",8*/
  66.                  0x00,0x00,0x08,0x38,0xF0,0xC0,0x00,0x00,0x00,0x00,0x80,0xE0,0x7F,0x1F,0x00,0x00,/*")",9*/
  67.                  0x80,0xA0,0xE0,0xE0,0xE0,0xE0,0xA0,0x80,0x00,0x02,0x03,0x03,0x03,0x03,0x02,0x00,/*"*",10*/
  68.                  0x00,0x00,0x00,0xE0,0xE0,0x00,0x00,0x00,0x01,0x01,0x01,0x0F,0x0F,0x01,0x01,0x01,/*"+",11*/
  69.                  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x38,0x38,0x18,0x08,0x00,/*",",12*/
  70.                  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,/*"-",13*/
  71.                  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x18,0x00,0x00,/*".",14*/
  72.                  0x00,0x00,0x00,0x00,0x80,0xC0,0x60,0x30,0x08,0x0C,0x06,0x03,0x01,0x00,0x00,0x00,/*"/",15*/
  73.                  0x00,0xF0,0xF8,0x08,0x08,0x08,0xF8,0xF0,0x00,0x0F,0x1F,0x10,0x10,0x10,0x1F,0x0F,/*"0",16*/
  74.                  0x00,0x00,0x10,0x10,0xF8,0xF8,0x00,0x00,0x00,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,/*"1",17*/
  75.                  0x00,0x10,0x18,0x08,0x08,0x88,0xF8,0x70,0x00,0x18,0x1C,0x16,0x13,0x11,0x10,0x10,/*"2",18*/
  76.                  0x00,0x10,0x18,0x88,0x88,0x88,0xF8,0x70,0x00,0x08,0x18,0x10,0x10,0x10,0x1F,0x0F,/*"3",19*/
  77.                  0x00,0x00,0x80,0xE0,0x70,0xF8,0xF8,0x00,0x00,0x03,0x03,0x02,0x12,0x1F,0x1F,0x12,/*"4",20*/
  78.                  0x00,0xF8,0xF8,0x88,0x88,0x88,0x88,0x08,0x00,0x08,0x18,0x10,0x10,0x10,0x1F,0x0F,/*"5",21*/
  79.                  0x00,0xE0,0xF0,0x98,0x88,0x88,0x88,0x00,0x00,0x0F,0x1F,0x11,0x10,0x10,0x1F,0x0F,/*"6",22*/
  80.                  0x00,0x18,0x18,0x08,0x88,0xE8,0x78,0x18,0x00,0x00,0x18,0x1E,0x07,0x01,0x00,0x00,/*"7",23*/
  81.                  0x00,0x70,0xF8,0x88,0x88,0x88,0xF8,0x70,0x00,0x0F,0x1F,0x10,0x10,0x10,0x1F,0x0F,/*"8",24*/
  82.                  0x00,0xF0,0xF8,0x08,0x08,0x88,0xF8,0xF0,0x00,0x00,0x11,0x11,0x11,0x19,0x0F,0x07,/*"9",25*/
  83.                  0x00,0x00,0x00,0xC0,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x18,0x00,0x00,/*":",26*/
  84.                  0x00,0x00,0x00,0xC0,0xC0,0xC0,0x00,0x00,0x00,0x00,0x20,0x38,0x38,0x18,0x08,0x00,/*";",27*/
  85.                  0x00,0x00,0x80,0xC0,0x60,0x30,0x10,0x00,0x00,0x01,0x03,0x06,0x0C,0x18,0x10,0x00,/*"<",28*/
  86.                  0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x02,0x02,0x02,0x02,0x02,0x02,0x02,/*"=",29*/
  87.                  0x00,0x10,0x30,0x60,0xC0,0x80,0x00,0x00,0x00,0x10,0x18,0x0C,0x06,0x03,0x01,0x00,/*">",30*/
  88.                  0x00,0x10,0x18,0x08,0x08,0x88,0xF8,0x70,0x00,0x00,0x00,0x16,0x17,0x01,0x00,0x00,/*"?",31*/
  89.                  0xE0,0xF0,0x98,0xC8,0x48,0xC8,0xD8,0xF0,0x0F,0x1F,0x33,0x27,0x24,0x27,0x27,0x27,/*"@",32*/
  90.                  0x00,0x88,0xE8,0x78,0x78,0xE0,0x80,0x00,0x1C,0x1F,0x13,0x02,0x02,0x13,0x1F,0x1C,/*"A",33*/
  91.                  0x08,0xF8,0xF8,0x88,0x88,0x88,0xF8,0x70,0x10,0x1F,0x1F,0x10,0x10,0x10,0x1F,0x0F,/*"B",34*/
  92.                  0xE0,0xF0,0x18,0x08,0x08,0x18,0x78,0x78,0x07,0x0F,0x18,0x10,0x10,0x10,0x18,0x08,/*"C",35*/
  93.                  0x08,0xF8,0xF8,0x08,0x08,0x18,0xF0,0xE0,0x10,0x1F,0x1F,0x10,0x10,0x18,0x0F,0x07,/*"D",36*/
  94.                  0x08,0xF8,0xF8,0x88,0xC8,0xC8,0x18,0x18,0x10,0x1F,0x1F,0x10,0x11,0x11,0x18,0x18,/*"E",37*/
  95.                  0x08,0xF8,0xF8,0x88,0xC8,0xC8,0x18,0x18,0x10,0x1F,0x1F,0x10,0x11,0x01,0x00,0x00,/*"F",38*/
  96.                  0xE0,0xF0,0x18,0x08,0x08,0x18,0x78,0x78,0x07,0x0F,0x18,0x10,0x11,0x11,0x1F,0x0F,/*"G",39*/
  97.                  0xF8,0xF8,0x88,0x80,0x80,0x88,0xF8,0xF8,0x1F,0x1F,0x10,0x00,0x00,0x10,0x1F,0x1F,/*"H",40*/
  98.                  0x00,0x08,0x08,0xF8,0xF8,0x08,0x08,0x00,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,/*"I",41*/
  99.                  0x00,0x00,0x00,0x08,0x08,0xF8,0xF8,0x08,0x0C,0x1C,0x10,0x10,0x10,0x1F,0x0F,0x00,/*"J",42*/
  100.                  0x08,0xF8,0xF8,0x88,0xE8,0x78,0x18,0x08,0x10,0x1F,0x1F,0x11,0x03,0x06,0x1C,0x18,/*"K",43*/
  101.                  0x08,0xF8,0xF8,0x08,0x08,0x00,0x00,0x00,0x10,0x1F,0x1F,0x10,0x10,0x10,0x18,0x18,/*"L",44*/
  102.                  0xF8,0xF8,0xE0,0x80,0x80,0xE0,0xF8,0xF8,0x1F,0x1F,0x11,0x07,0x07,0x11,0x1F,0x1F,/*"M",45*/
  103.                  0xF8,0xF8,0xE0,0xC0,0x08,0x08,0xF8,0xF8,0x1F,0x1F,0x10,0x11,0x07,0x0E,0x1F,0x1F,/*"N",46*/
  104.                  0xE0,0xF0,0x18,0x08,0x08,0x18,0xF0,0xE0,0x07,0x0F,0x18,0x10,0x10,0x18,0x0F,0x07,/*"O",47*/
  105.                  0x08,0xF8,0xF8,0x08,0x08,0x08,0xF8,0xF0,0x10,0x1F,0x1F,0x11,0x11,0x01,0x01,0x00,/*"P",48*/
  106.                  0xE0,0xF0,0x18,0x08,0x08,0x18,0xF0,0xE0,0x07,0x4F,0x58,0x70,0x30,0x78,0x4F,0x47,/*"Q",49*/
  107.                  0x08,0xF8,0xF8,0x08,0x08,0x08,0xF8,0xF0,0x10,0x1F,0x1F,0x11,0x03,0x07,0x1D,0x18,/*"R",50*/
  108.                  0x70,0xF8,0x88,0x88,0x88,0x18,0x38,0x38,0x1C,0x1C,0x18,0x10,0x11,0x11,0x1F,0x0E,/*"S",51*/
  109.                  0x18,0x08,0x08,0xF8,0xF8,0x08,0x08,0x18,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,/*"T",52*/
  110.                  0xF8,0xF8,0x08,0x00,0x00,0x08,0xF8,0xF8,0x0F,0x0F,0x18,0x10,0x10,0x18,0x0F,0x0F,/*"U",53*/
  111.                  0x38,0xF8,0xC8,0x00,0x00,0xC8,0xF8,0x38,0x00,0x01,0x07,0x1E,0x1E,0x07,0x01,0x00,/*"V",54*/
  112.                  0xF8,0x88,0x80,0xE0,0xE0,0x80,0x88,0xF8,0x03,0x1F,0x1F,0x03,0x03,0x1F,0x1F,0x03,/*"W",55*/
  113.                  0x18,0x38,0x68,0xC0,0xC0,0x68,0x38,0x18,0x18,0x1C,0x16,0x03,0x03,0x16,0x1C,0x18,/*"X",56*/
  114.                  0x18,0x78,0xE8,0x80,0x80,0xE8,0x78,0x18,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,/*"Y",57*/
  115.                  0x18,0x18,0x08,0x88,0xC8,0x68,0x38,0x18,0x18,0x1C,0x16,0x13,0x11,0x10,0x18,0x18,/*"Z",58*/
  116.                  0x00,0x00,0x00,0xF8,0xF8,0x08,0x08,0x00,0x00,0x00,0x00,0xFF,0xFF,0x80,0x80,0x00,/*"[",59*/
  117.                  0x10,0x30,0x60,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x03,0x06,0x0C,/*"",60*/
  118.                  0x00,0x00,0x08,0x08,0xF8,0xF8,0x00,0x00,0x00,0x00,0x80,0x80,0xFF,0xFF,0x00,0x00,/*"]",61*/
  119.                  0x40,0x60,0x30,0x18,0x18,0x30,0x60,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"^",62*/
  120.                  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,/*"_",63*/
  121.                  0x00,0x00,0x08,0x18,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"`",64*/
  122.                  0x00,0x40,0x40,0x40,0x40,0xC0,0x80,0x00,0x0E,0x1F,0x11,0x11,0x11,0x1F,0x1F,0x10,/*"a",65*/
  123.                  0x08,0xF8,0xF8,0xC0,0x40,0xC0,0x80,0x80,0x10,0x1F,0x1F,0x18,0x10,0x18,0x0F,0x0F,/*"b",66*/
  124.                  0x80,0x80,0xC0,0x40,0x40,0xC0,0xC0,0xC0,0x0F,0x0F,0x18,0x10,0x10,0x18,0x08,0x08,/*"c",67*/
  125.                  0x80,0x80,0xC0,0x40,0xC8,0xF8,0xF8,0x00,0x0F,0x0F,0x18,0x10,0x18,0x1F,0x1F,0x10,/*"d",68*/
  126.                  0x80,0x80,0xC0,0x40,0x40,0xC0,0x80,0x80,0x0F,0x0F,0x1A,0x12,0x12,0x1A,0x0B,0x0B,/*"e",69*/
  127.                  0x00,0x80,0xF0,0xF8,0x88,0x88,0x18,0x10,0x00,0x10,0x1F,0x1F,0x10,0x10,0x00,0x00,/*"f",70*/
  128.                  0x80,0x80,0xC0,0x40,0xC0,0xC0,0xC0,0x40,0x67,0xE7,0x8C,0x88,0x8C,0xFF,0x7F,0x00,/*"g",71*/
  129.                  0x08,0xF8,0xF8,0xC0,0x40,0xC0,0x80,0x00,0x10,0x1F,0x1F,0x10,0x10,0x1F,0x1F,0x10,/*"h",72*/
  130.                  0x00,0x40,0x40,0xC8,0xC8,0x00,0x00,0x00,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,/*"i",73*/
  131.                  0x00,0x00,0x40,0x40,0xC8,0xC8,0x00,0x00,0x40,0xC0,0x80,0x80,0xFF,0x7F,0x00,0x00,/*"j",74*/
  132.                  0x08,0xF8,0xF8,0x00,0xC0,0xC0,0x40,0x40,0x10,0x1F,0x1F,0x13,0x17,0x1C,0x18,0x10,/*"k",75*/
  133.                  0x00,0x08,0x08,0xF8,0xF8,0x00,0x00,0x00,0x00,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,/*"l",76*/
  134.                  0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0x1F,0x1F,0x10,0x1F,0x1F,0x10,0x1F,0x1F,/*"m",77*/
  135.                  0x40,0xC0,0xC0,0xC0,0x40,0xC0,0x80,0x00,0x10,0x1F,0x1F,0x10,0x10,0x1F,0x1F,0x10,/*"n",78*/
  136.                  0x80,0x80,0xC0,0x40,0x40,0xC0,0x80,0x80,0x0F,0x0F,0x18,0x10,0x10,0x18,0x0F,0x0F,/*"o",79*/
  137.                  0x40,0xC0,0xC0,0xC0,0x40,0xC0,0x80,0x80,0x80,0xFF,0xFF,0x98,0x90,0x18,0x0F,0x0F,/*"p",80*/
  138.                  0x80,0x80,0xC0,0x40,0xC0,0xC0,0xC0,0x40,0x0F,0x0F,0x18,0x90,0x98,0xFF,0xFF,0x80,/*"q",81*/
  139.                  0x40,0x40,0xC0,0xC0,0xC0,0x40,0x40,0xC0,0x10,0x10,0x1F,0x1F,0x10,0x10,0x00,0x00,/*"r",82*/
  140.                  0x80,0xC0,0x40,0x40,0x40,0x40,0xC0,0x80,0x09,0x1B,0x12,0x12,0x12,0x12,0x1E,0x0C,/*"s",83*/
  141.                  0x40,0x40,0xF0,0xF0,0x40,0x40,0x40,0x00,0x00,0x00,0x0F,0x1F,0x10,0x10,0x18,0x08,/*"t",84*/
  142.                  0x40,0xC0,0xC0,0x00,0x40,0xC0,0xC0,0x00,0x00,0x0F,0x1F,0x10,0x18,0x1F,0x1F,0x10,/*"u",85*/
  143.                  0xC0,0xC0,0x40,0x00,0x00,0x40,0xC0,0xC0,0x00,0x03,0x0F,0x1C,0x1C,0x0F,0x03,0x00,/*"v",86*/
  144.                  0xC0,0xC0,0x40,0xC0,0xC0,0x40,0xC0,0xC0,0x07,0x1F,0x1F,0x07,0x07,0x1F,0x1F,0x07,/*"w",87*/
  145.                  0x40,0xC0,0xC0,0x40,0x40,0xC0,0xC0,0x40,0x10,0x18,0x1D,0x17,0x17,0x1D,0x18,0x10,/*"x",88*/
  146.                  0xC0,0xC0,0x40,0x00,0x00,0x40,0xC0,0xC0,0x80,0x83,0xCF,0x7C,0x3C,0x0F,0x03,0x00,/*"y",89*/
  147.                  0xC0,0xC0,0x40,0x40,0x40,0xC0,0xC0,0x40,0x10,0x18,0x1C,0x16,0x13,0x11,0x18,0x18,/*"z",90*/
  148.                  0x00,0x00,0x00,0xF0,0xF8,0x08,0x08,0x00,0x00,0x02,0x02,0x7F,0xFD,0x80,0x80,0x00,/*"{",91*/
  149.                  0x00,0x00,0x00,0xF8,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00,/*"|",92*/
  150.                  0x00,0x00,0x08,0x08,0xF8,0xF0,0x00,0x00,0x00,0x00,0x80,0x80,0xFD,0x7F,0x02,0x02,/*"}",93*/
  151.                  0x30,0x38,0x08,0x18,0x30,0x20,0x38,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"~",94*/
  152. };

  154. uint8_t OLED_Buffer[] =
  155. {
  156.                 0x80,0xB0,0x80,0x00,0x80,0x10,
  157.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  158.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  159.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  160.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  161.                 0x80,0xB1,0x80,0x00,0x80,0x10,
  162.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  163.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  164.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,
  165.                 0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0xC0,0x00,0x40,0x00,
  166. };

  168. uint8_t OledInitCodes[] =
  169. {
  170.                  0x80,0x81,//亮度设置
  171.                  0x80,0x00,//00~FF
  172.                  0x80,0xA4,//A4??,A5??
  173.                  0x80,0xA6,//A6??,A7??
  174.                  0x80,0xAF,//AE??,AF??
  175.                  0x80,0xA8,
  176.                  0x80,0x3F,
  177.                  0x80,0xC8,//C0????,C8??
  178.                  0x80,0xD3,
  179.                  0x80,0x00,
  180.                  0x80,0x40,
  181.                  0x80,0xA1,//A0????,A1??
  182.                  0x80,0xDA,
  183.                  0x80,0x12,
  184.                  0x80,0xD5,
  185.                  0x80,0xF0,
  186.                  0x80,0x8D,
  187.                  0x80,0x14,
  188.                  0x80,0x20,
  189.                  0x80,0x02,
  190.                  0x80,0xb0,
  191.                  0x80,0x00,
  192.                  0x00,0x10
  193. };

  195. uint8_t *pOLED_Buffer;
  196. uint8_t *pASCII;
  197. char cBuffer[16];
  198. uint16_t ADC_Result;
  199. uint16_t ADC_Result_Sum;
  200. float ADC_Final_Result;
  201. uint16_t ADC_Final_Result_d;
  202. uint16_t ADC_Final_Result_f;
  203. uint8_t Main_Status = 0;
  204. uint8_t Random_Result;
  205. /* USER CODE END PV */

  207. /* Private function prototypes -----------------------------------------------*/
  208. void SystemClock_Config(void);
  209. static void MX_GPIO_Init(void);
  210. static void MX_I2C1_Init(void);
  211. static void MX_TIM2_Init(void);
  212. static void MX_ADC1_Init(void);

  214. /* USER CODE BEGIN PFP */
  215. /* Private function prototypes -----------------------------------------------*/
  216. void OLED_Clear(void);
  217. void OLED_Print(char *c, uint8_t line);
  218. /* USER CODE END PFP */

  220. /* USER CODE BEGIN 0 */

  222. /* USER CODE END 0 */

  224. /**
  225.   * @brief  The application entry point.
  226.   *
  227.   * @retval None
  228.   */
  229. int main(void)
  230. {
  231.   /* USER CODE BEGIN 1 */

  233.   /* USER CODE END 1 */

  235.   /* MCU Configuration----------------------------------------------------------*/

  237.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  238.   HAL_Init();

  240.   /* USER CODE BEGIN Init */

  242.   /* USER CODE END Init */

  244.   /* Configure the system clock */
  245.   SystemClock_Config();

  247.   /* USER CODE BEGIN SysInit */

  249.   /* USER CODE END SysInit */

  251.   /* Initialize all configured peripherals */
  252.   MX_GPIO_Init();
  253.   MX_I2C1_Init();
  254.   MX_TIM2_Init();
  255.   MX_ADC1_Init();
  256.   /* USER CODE BEGIN 2 */
  257.   /* 等待OLED上电 */
  258.   HAL_Delay(100);

  260.   HAL_I2C_Master_Transmit(&hi2c1, 0x78, OledInitCodes, sizeof(OledInitCodes), 10);
  261.   OLED_Clear();
  262.   OLED_Print("Welcome!", 6);

  264.   /* ADC1自校准 */
  265.   HAL_ADCEx_Calibration_Start(&hadc1);

  267.   HAL_TIM_Base_Start_IT(&htim2);
  268.   /* USER CODE END 2 */

  270.   /* Infinite loop */
  271.   /* USER CODE BEGIN WHILE */
  272.   while (1)
  273.   {
  274.           HAL_SuspendTick();
  275.           HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
  276.           HAL_ResumeTick();
  277.   /* USER CODE END WHILE */

  279.   /* USER CODE BEGIN 3 */
  280.           switch(Main_Status++)
  281.           {
  282.           case 0:
  283.                   HAL_ADC_Start(&hadc1);
  284.                   ADC_Result_Sum = 0;
  285.                   Random_Result = 0;
  286.                   break;
  287.           case 1:
  288.           case 2:
  289.           case 3:
  290.           case 4:
  291.           case 5:
  292.           case 6:
  293.           case 7:
  294.                   ADC_Result = HAL_ADC_GetValue(&hadc1);
  295.                   ADC_Result_Sum += ADC_Result;
  296.                   Random_Result <<= 1;
  297.                   Random_Result |= (ADC_Result & 0x01);
  298.                   HAL_ADC_Start(&hadc1);
  299.                   break;
  300.           case 8:
  301.                   ADC_Result = HAL_ADC_GetValue(&hadc1);
  302.                   ADC_Result_Sum += ADC_Result;
  303.                   Random_Result <<= 1;
  304.                   Random_Result |= (ADC_Result & 0x01);
  305.                   sprintf(cBuffer, "Random = %d", Random_Result);
  306.                   OLED_Print(cBuffer, 0);
  307.                   sprintf(cBuffer, "ADC Value = %d", ADC_Result_Sum >> 3);        //8次采样求平均
  308.                   OLED_Print(cBuffer, 2);
  309.                   ADC_Final_Result = ADC_Result_Sum * 3.358 / 4095 / 8;        //电源电压3.358V

  311.                   /* 由于sprintf不支持输出浮点变量，拆成两个整形分别输出 */
  312.                   ADC_Final_Result_d = (uint16_t)ADC_Final_Result;        //??????
  313.                   ADC_Final_Result -= ADC_Final_Result_d;        //??????
  314.                   ADC_Final_Result_f = (uint16_t)(ADC_Final_Result * 1e03);        //??????
  315.                   sprintf(cBuffer, "Voltage = %d.%03dV", ADC_Final_Result_d, ADC_Final_Result_f);
  316.                   OLED_Print(cBuffer, 4);
  317.                   break;
  318.           default:
  319.                   Main_Status = 0;

  321.                   /* 翻转LED */
  322.                   HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
  323.                   break;
  324.           }
  325.   }
  326.   /* USER CODE END 3 */

  328. }

  330. /**
  331.   * @brief System Clock Configuration
  332.   * @retval None
  333.   */
  334. void SystemClock_Config(void)
  335. {

  337.   RCC_OscInitTypeDef RCC_OscInitStruct;
  338.   RCC_ClkInitTypeDef RCC_ClkInitStruct;
  339.   RCC_PeriphCLKInitTypeDef PeriphClkInit;

  341.     /**Initializes the CPU, AHB and APB busses clocks
  342.     */
  343.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  344.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  345.   RCC_OscInitStruct.HSICalibrationValue = 16;
  346.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  347.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
  348.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL4;
  349.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  350.   {
  351.     _Error_Handler(__FILE__, __LINE__);
  352.   }

  354.     /**Initializes the CPU, AHB and APB busses clocks
  355.     */
  356.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  357.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  358.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  359.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  360.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  361.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  363.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  364.   {
  365.     _Error_Handler(__FILE__, __LINE__);
  366.   }

  368.   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  369.   PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
  370.   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  371.   {
  372.     _Error_Handler(__FILE__, __LINE__);
  373.   }

  375.     /**Configure the Systick interrupt time
  376.     */
  377.   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

  379.     /**Configure the Systick
  380.     */
  381.   HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  383.   /* SysTick_IRQn interrupt configuration */
  384.   HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
  385. }

  387. /* ADC1 init function */
  388. static void MX_ADC1_Init(void)
  389. {

  391.   ADC_ChannelConfTypeDef sConfig;

  393.     /**Common config
  394.     */
  395.   hadc1.Instance = ADC1;
  396.   hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  397.   hadc1.Init.ContinuousConvMode = DISABLE;
  398.   hadc1.Init.DiscontinuousConvMode = DISABLE;
  399.   hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  400.   hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  401.   hadc1.Init.NbrOfConversion = 1;
  402.   if (HAL_ADC_Init(&hadc1) != HAL_OK)
  403.   {
  404.     _Error_Handler(__FILE__, __LINE__);
  405.   }

  407.     /**Configure Regular Channel
  408.     */
  409.   sConfig.Channel = ADC_CHANNEL_1;
  410.   sConfig.Rank = ADC_REGULAR_RANK_1;
  411.   sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
  412.   if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  413.   {
  414.     _Error_Handler(__FILE__, __LINE__);
  415.   }

  417. }

  419. /* I2C1 init function */
  420. static void MX_I2C1_Init(void)
  421. {

  423.   hi2c1.Instance = I2C1;
  424.   hi2c1.Init.ClockSpeed = 400000;
  425.   hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  426.   hi2c1.Init.OwnAddress1 = 0;
  427.   hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  428.   hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  429.   hi2c1.Init.OwnAddress2 = 0;
  430.   hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  431.   hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  432.   if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  433.   {
  434.     _Error_Handler(__FILE__, __LINE__);
  435.   }

  437. }

  439. /* TIM2 init function */
  440. static void MX_TIM2_Init(void)
  441. {

  443.   TIM_ClockConfigTypeDef sClockSourceConfig;
  444.   TIM_MasterConfigTypeDef sMasterConfig;

  446.   htim2.Instance = TIM2;
  447.   htim2.Init.Prescaler = 159;
  448.   htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  449.   htim2.Init.Period = 4999;
  450.   htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  451.   htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  452.   if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  453.   {
  454.     _Error_Handler(__FILE__, __LINE__);
  455.   }

  457.   sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  458.   if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  459.   {
  460.     _Error_Handler(__FILE__, __LINE__);
  461.   }

  463.   sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  464.   sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  465.   if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  466.   {
  467.     _Error_Handler(__FILE__, __LINE__);
  468.   }

  470. }

  472. /** Configure pins as
  473.         * Analog
  474.         * Input
  475.         * Output
  476.         * EVENT_OUT
  477.         * EXTI
  478. */
  479. static void MX_GPIO_Init(void)
  480. {

  482.   GPIO_InitTypeDef GPIO_InitStruct;

  484.   /* GPIO Ports Clock Enable */
  485.   __HAL_RCC_GPIOC_CLK_ENABLE();
  486.   __HAL_RCC_GPIOA_CLK_ENABLE();
  487.   __HAL_RCC_GPIOB_CLK_ENABLE();

  489.   /*Configure GPIO pin Output Level */
  490.   HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);

  492.   /*Configure GPIO pin : PC13 */
  493.   GPIO_InitStruct.Pin = GPIO_PIN_13;
  494.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  495.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  496.   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  498. }

  500. /* USER CODE BEGIN 4 */
  501. void OLED_Clear(void)
  502. {
  503.           for(uint16_t i = 7; i < 262; i+=2)
  504.                   OLED_Buffer[i] = 0x00;
  505.           for(uint16_t i = 269; i < 524; i+=2)
  506.                   OLED_Buffer[i] = 0x00;
  507.           OLED_Buffer[1] = 0xB0;
  508.           OLED_Buffer[263] = 0xB4;
  509.           HAL_I2C_Master_Transmit(&hi2c1, 0x78, OLED_Buffer, sizeof(OLED_Buffer), 50);
  510.           OLED_Buffer[1]++;
  511.           OLED_Buffer[263]++;
  512.           HAL_I2C_Master_Transmit(&hi2c1, 0x78, OLED_Buffer, sizeof(OLED_Buffer), 50);
  513.           OLED_Buffer[1]++;
  514.           OLED_Buffer[263]++;
  515.           HAL_I2C_Master_Transmit(&hi2c1, 0x78, OLED_Buffer, sizeof(OLED_Buffer), 50);
  516.           OLED_Buffer[1]++;
  517.           OLED_Buffer[263]++;
  518.           HAL_I2C_Master_Transmit(&hi2c1, 0x78, OLED_Buffer, sizeof(OLED_Buffer), 50);
  519. }

  521. void OLED_Print(char *c, uint8_t line)
  522. {
  523.         uint8_t i, j;
  524.         OLED_Buffer[1] = 0xB0 | (line & 0x07);
  525.         OLED_Buffer[263] = 0xB0 | ((line + 1) & 0x07);
  526.     for(i = 0; i < 16; i++){
  527.         if(*c)
  528.         {
  529.             pASCII = ASCII + ((*c - 0x20) << 4);
  530.             pOLED_Buffer = OLED_Buffer + (i << 4) + 7;
  531.             for(j = 8; j; j--){
  532.                 *pOLED_Buffer = *pASCII++;
  533.                 pOLED_Buffer += 2;
  534.             }
  535.             pOLED_Buffer = OLED_Buffer + (i << 4) + 269;
  536.             for(j = 8; j; j--){
  537.                 *pOLED_Buffer = *pASCII++;
  538.                 pOLED_Buffer += 2;
  539.             }
  540.             c++;
  541.         }
  542.         else
  543.         {
  544.             pASCII = ASCII;
  545.             pOLED_Buffer = OLED_Buffer + (i << 4) + 7;
  546.             for(j = 8; j; j--){
  547.                 *pOLED_Buffer = *pASCII++;
  548.                 pOLED_Buffer += 2;
  549.             }
  550.             pOLED_Buffer = OLED_Buffer + (i << 4) + 269;
  551.             for(j = 8; j; j--){
  552.                 *pOLED_Buffer = *pASCII++;
  553.                 pOLED_Buffer += 2;
  554.             }
  555.         }
  556.     }
  557.     HAL_I2C_Master_Transmit(&hi2c1, 0x78, OLED_Buffer, sizeof(OLED_Buffer), 50);
  558. }

  560. void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
  561. {
  562.     if (htim->Instance == htim2.Instance)
  563.     {

  565.     }
  566. }
  567. /* USER CODE END 4 */

  569. /**
  570.   * @brief  This function is executed in case of error occurrence.
  571.   * @param  file: The file name as string.
  572.   * @param  line: The line in file as a number.
  573.   * @retval None
  574.   */
  575. void _Error_Handler(char *file, int line)
  576. {
  577.   /* USER CODE BEGIN Error_Handler_Debug */
  578.   /* User can add his own implementation to report the HAL error return state */
  579.   while(1)
  580.   {
  581.   }
  582.   /* USER CODE END Error_Handler_Debug */
  583. }

  585. #ifdef  USE_FULL_ASSERT
  586. /**
  587.   * @brief  Reports the name of the source file and the source line number
  588.   *         where the assert_param error has occurred.
  589.   * @param  file: pointer to the source file name
  590.   * @param  line: assert_param error line source number
  591.   * @retval None
  592.   */
  593. void assert_failed(uint8_t* file, uint32_t line)
  594. {
  595.   /* USER CODE BEGIN 6 */
  596.   /* User can add his own implementation to report the file name and line number,
  597.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  598.   /* USER CODE END 6 */
  599. }
  600. #endif /* USE_FULL_ASSERT */

  602. /**
  603.   * @}
  604.   */

  606. /**
  607.   * @}
  608.   */

  610. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
复制代码



评分

参与人数 1蝴蝶豆 +4 收起 理由
zero99 + 4

查看全部评分

赞 0 评论
select326 回答时间：2018-3-14 22:17:04
xmstudio 发表于 2018-3-13 23:58
我有一个写好的OLED程序，楼主可以参考一下。这个程序的功能是ADC采样，并且利用ADC噪声产生一个随机数显示 ...

感谢指点，我研究下这个办法，谢谢
赞 0 评论
dsjsjf 回答时间：2018-3-15 15:51:25
注意IIC的时序，让IIC通讯任务的优先级高，千万不要在通讯过程中被其他任务打断

评分

参与人数 1蝴蝶豆 +2 收起 理由
zero99 + 2

查看全部评分

赞 0 评论
12

所属标签

相似问题

关于
意法半导体
我们是谁
投资者关系
意法半导体可持续发展举措
创新与技术
意法半导体官网
联系我们
联系ST分支机构
寻找销售人员和分销渠道
社区
媒体中心
活动与培训
隐私策略
隐私策略
Cookies管理
行使您的权利
官方最新发布
STM32N6 AI生态系统
STM32MCU,MPU高性能GUI
ST ACEPACK电源模块
意法半导体生物传感器
STM32Cube扩展软件包
关注我们
微信公众号二维码 微信公众号
手机版二维码 手机版