BlueNRG-1简易时钟，RTC模块，通过WS2812显示时间

littleshrimp

BlueNRG-1简易时钟，RTC模块，通过WS2812显示时间 [复制链接]

 

淘了一块WS2812的环形板子

想用它做一个模拟时钟

正常60颗灯珠是最理想的选择

因为价格高，尺寸大最后选择了24颗灯珠的板子

WS2812之前已经使用BlueNRG-1调试过了

这次直接把RTC代码添加进去

做些简单修改就可以

因为只有24颗灯珠，所以秒和分的精度都是2.5

通过RTC定时器将中断时间设置为2.5秒

每隔2.5秒更新一次

效果如下

RTC配置代码

1. 
   
2. /* Includes ------------------------------------------------------------------*/
   
3. #include "rtc.h"
   
4. #include "BlueNRG_x_device.h"
   
5. #include "BlueNRG1_conf.h"
   
6. #include "SDK_EVAL_Config.h"
   
7. 
   
8. #define RTC_PERIOD_2500ms        ((uint32_t)((32768-1) * 2.5))
   
9. 
   
10. /* Private macro -------------------------------------------------------------*/
    
11. /* Private variables ---------------------------------------------------------*/
    
12. /* Private function prototypes -----------------------------------------------*/
    
13. void RTC_Timer_Configuration(void);   
    
14. void RTC_Clockwatch_Configuration(void);
    
15. /**
    
16.   * [url=home.php?mod=space&uid=159083]@brief[/url]  RTC Configuration.
    
17.   * @param  None
    
18.   * @retval None
    
19.   */
    
20. void RTC_Timer_Configuration(void)
    
21. {
    
22.   RTC_InitType RTC_Init_struct;
    
23.   NVIC_InitType NVIC_InitStructure;
    
24.   
    
25.   SysCtrl_PeripheralClockCmd(CLOCK_PERIPH_RTC, ENABLE);
    
26.   
    
27.   RTC_Init_struct.RTC_operatingMode = RTC_TIMER_PERIODIC;    /**< Periodic RTC mode */
    
28.   RTC_Init_struct.RTC_PATTERN_SIZE = 1 - 1;                  /**< Pattern size set to 1 */
    
29.   RTC_Init_struct.RTC_TLR1 = RTC_PERIOD_2500ms;               /**< Enable 0.5s timer period */
    
30.   RTC_Init_struct.RTC_PATTERN1 = 0x00;                       /**< RTC_TLR1 selected for time generation */
    
31.   RTC_Init(&RTC_Init_struct);
    
32.   
    
33.   /* Enable RTC Timer interrupt*/
    
34.   RTC_IT_Config(RTC_IT_TIMER, ENABLE);
    
35.   RTC_IT_Clear(RTC_IT_TIMER);
    
36. 
    
37.   /** Delay between two write in RTC0->TCR register has to be
    
38.    *  at least 3 x 32k cycle + 2 CPU cycle. For that reason it
    
39.    *  is neccessary to add the delay.
    
40.    */
    
41.   for (volatile uint16_t i=0; i<600; i++) {
    
42.     __asm("NOP");
    
43.   }
    
44.   
    
45.   /* Set the RTC_IRQn interrupt priority and enable it */
    
46.   NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
    
47.   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = LOW_PRIORITY;
    
48.   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    
49.   NVIC_Init(&NVIC_InitStructure);
    
50.   
    
51.   /* Enable RTC */
    
52.   RTC_Cmd(ENABLE);
    
53. }
    
54. 
    
55. /**
    
56.   * @brief  RTC clockwatch configuration.
    
57.   * @param  None
    
58.   * @retval None
    
59.   */
    
60. void RTC_Clockwatch_Set(uint16_t year,uint8_t month,uint8_t day,uint8_t week,uint8_t hour,uint8_t minute,uint8_t second)
    
61. {
    
62.   RTC_DateTimeType RTC_DateTime;
    
63.   
    
64.   /* Set the present time and date */
    
65.   RTC_DateTime.Second = second;
    
66.   RTC_DateTime.Minute = minute;
    
67.   RTC_DateTime.Hour = hour;
    
68.   RTC_DateTime.WeekDay = week;
    
69.   RTC_DateTime.MonthDay = day;
    
70.   RTC_DateTime.Month = month;
    
71.   RTC_DateTime.Year = year;
    
72.   RTC_SetTimeDate(&RTC_DateTime);
    
73.   
    
74.   /* Enable RTC clock watch interrupt */
    
75.   RTC_IT_Config( RTC_IT_CLOCKWATCH, ENABLE);
    
76.   RTC_IT_Clear(RTC_IT_CLOCKWATCH);
    
77.         
    
78.   /* Enable RTC clockwatch */
    
79.   RTC_ClockwatchCmd(ENABLE);
    
80. }
    
81. void RTC_Colckwath_Math(uint16_t year,uint8_t month,uint8_t day,uint8_t week,uint8_t hour,uint8_t minute,uint8_t second)
    
82. {  
    
83.   RTC_DateTimeType RTC_DateTime;
    
84.   /* Set the present time and date match */
    
85.   RTC_DateTime.Second = second;
    
86.   RTC_DateTime.Minute = minute;
    
87.   RTC_DateTime.Hour = hour;
    
88.   RTC_DateTime.WeekDay = week;
    
89.   RTC_DateTime.MonthDay = day;
    
90.   RTC_DateTime.Month = month;
    
91.   RTC_DateTime.Year = year;
    
92.   RTC_SetMatchTimeDate(&RTC_DateTime);
    
93. }
    
94. void rtc_init(uint16_t year,uint8_t month,uint8_t day,uint8_t week,uint8_t hour,uint8_t minute,uint8_t second)
    
95. {
    
96.   RTC_Timer_Configuration();
    
97.   RTC_Clockwatch_Set(year,month,day,week,hour,minute,second);
    
98. }
    
99. void rtc_get_time(RTC_DateTimeType* RTC_DateTime)
    
100. {  
     
101.     RTC_GetTimeDate(RTC_DateTime);
     
102. }

复制代码

主文件

1. /* Includes ------------------------------------------------------------------*/
   
2. #include "BlueNRG_x_device.h"
   
3. #include <stdio.h>
   
4. #include "BlueNRG1_conf.h"
   
5. #include "BlueNRG1_it.h"
   
6. #include "SDK_EVAL_Config.h"
   
7. #include "ws2812b.h"
   
8. #include "spi.h"
   
9. #include "rtc.h"
   
10. 
    
11. /** @addtogroup BlueNRG1_StdPeriph_Examples BlueNRG1 Standard Peripheral Examples
    
12. * @{
    
13. */
    
14. 
    
15. /** @addtogroup SPI_Examples SPI Examples
    
16. * @{
    
17. */
    
18. 
    
19. /** @addtogroup SPI_Master_DMA SPI Master DMA
    
20. * @{
    
21. */
    
22. 
    
23. /* Private typedef -----------------------------------------------------------*/
    
24. /* Private define ------------------------------------------------------------*/
    
25. 
    
26. #define WS2812B_COUNT 24
    
27. uint32_t color_buffer1[WS2812B_COUNT];
    
28. //RGB颜色缓冲转换为WS2812支持的SPI数据缓冲，一个RGB（24位）对应9个字节，WS2812B的一位需要3位，即110=1,100=0
    
29. uint8_t ws2812b_buffer[WS2812B_COUNT * 9];
    
30. /* Private macro -------------------------------------------------------------*/
    
31. /* Private variables ---------------------------------------------------------*/
    
32. uint8_t index = 0;
    
33. uint8_t ws2812b_flag = 0;
    
34. /* Private function prototypes -----------------------------------------------*/
    
35. /* Private functions ---------------------------------------------------------*/
    
36. 
    
37. void ws2812b_clear(void)
    
38. {
    
39.   uint16_t i;
    
40.   uint32_t colors[WS2812B_COUNT];
    
41.   for(i=0;i<WS2812B_COUNT;i++)
    
42.   {
    
43.       colors[i] = 0;
    
44.   }
    
45.   //填充完一列8个点后显示      
    
46.   IntColorsToWS2812BBytes(ws2812b_buffer,colors,WS2812B_COUNT);
    
47.   DMASpi_Sending((uint32_t)ws2812b_buffer,WS2812B_COUNT * 9);
    
48. }
    
49. void ws2812b_display(void)
    
50. {
    
51.   uint16_t i;  
    
52.   uint32_t colors[WS2812B_COUNT];
    
53.   RTC_DateTimeType RTC_DateTime;
    
54.   rtc_get_time(&RTC_DateTime);
    
55.   //清除源数据，绘制刻度
    
56.   for(i=0;i<WS2812B_COUNT;i++)
    
57.   {
    
58.     if(i%6==0)
    
59.     {
    
60.       colors[i] = 0x301000;
    
61.     }
    
62.     else if(i% 2 == 0)
    
63.     {
    
64.       colors[i] = 0x060200;
    
65.     }
    
66.     else
    
67.     {
    
68.       colors[i] = 0;
    
69.     }
    
70.   }
    
71.   colors[(RTC_DateTime.Hour % 12) * 2] = 0x990ff;
    
72.   colors[(uint8_t)(RTC_DateTime.Minute * (24.00 / 60.00))] = 0xff0099;
    
73.   colors[index++] = 0x99ff00;
    
74.   if(index >= 24 || RTC_DateTime.Second == 0)index = 0;
    
75.   //填充完一列8个点后显示      
    
76.   IntColorsToWS2812BBytes(ws2812b_buffer,colors,WS2812B_COUNT);
    
77.   DMASpi_Sending((uint32_t)ws2812b_buffer,WS2812B_COUNT * 9);
    
78. }
    
79. /**
    
80. * @brief  Main program code
    
81. * @param  None
    
82. * @retval None
    
83. */
    
84. int main(void)
    
85. {
    
86.   /* System initialization function */
    
87.   SystemInit();
    
88.   
    
89.   /* Identify BlueNRG1 platform */
    
90.   SdkEvalIdentification();
    
91.   
    
92.   /* Configure SysTick to generate interrupt with 25ms period */
    
93.   SysTick_Config(SYST_CLOCK/40 - 1);  
    
94.   
    
95.   SPI_Master_Configuration();
    
96.   ws2812b_clear();
    
97.   rtc_init(2019,1,10,4,19,26,00);
    
98.   while(1)
    
99.   {
    
100.     if(ws2812b_flag)
     
101.     {
     
102.       ws2812b_flag = 0;
     
103.       ws2812b_display();
     
104.     }
     
105.   }
     
106. }

复制代码

工程文件
Master_Dma.rar (39.89 KB, 下载次数: 18)

2019-1-10 19:40 上传

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dcexpert

这个板子做指南针效果不错。

btty038

视觉效果还很不错哦