bluenrg-1 True random numbers to achieve holiday lighting effects

littleshrimp

bluenrg-1 True random numbers to achieve holiday lighting effects [Copy link]

 

Use the true random number function of the RNG of bluenrg-1 to generate random colors, and then display them through the WS2812B colored lights. If you use a light strip and shorten the update delay, the effect will be better. Generate the code for random numbers, wait for the data to be ready before reading the data. The RNG module can read 16 bits of data at a time.

1. uint8_t rng_read(void) { uint8_t random; /* Loop until the RNG Data Ready is SET */ while (RNG_GetFlagStatus() != SET); random = (uint8_t)(RNG_GetValue() % 255); return random; }

复制代码

WS2812B uses 24 bits, so read 8 bits each time, and read 3 times in succession to fill an LED lamp bead.

1. void ws2812b_display(void) { uint16_t i; uint32_t colors[WS2812B_COUNT]; RTC_DateTimeType RTC_DateTime; rtc_get_time(&RTC_DateTime); //Clear source data, draw scale for(i=0;i<ws2812b_count;i++) 16="" 8="" <<="" colors[i]="rng_read()" if(index="" rng_read()="" rng_read();="" {="" |="" }="">= 24 || RTC_DateTime.Second == 0)index = 0; //Display after filling a column of 8 points IntColorsToWS2812BBytes(ws2812b_buffer,colors,WS2812B_COUNT); DMASpi_Sending((uint32_t)ws2812b_buffer,WS2812B_COUNT * 9); }

复制代码

https://training.eeworld.com.cn/course/4063/learn?preview=1#lesson/17835 https://training.eeworld.com.cn/course/4063/learn?preview=1#lesson/17836 Project Files

游客，如果您要查看本帖隐藏内容请回复

huanleng

Awesome, no time to do it