spi 推跑马灯 - 技术栈

spi 推跑马灯，来电时跑马灯效果归零码

1 主控spi单次最少是发一个U8 也就是8个bit位，所以软件充分利用这个u8的每一个bit位组合成一个灯需要的0码或者1码

2 遇到的问题，主频改变的时候数据就不对了，发送spi数据前需要判断当前主频来设置spi的波特率来保持波形

3 开机第一次发送波形的时候有概率的波形中间会被中断一次-----丢弃第一次发送的波形，第一次发送波形的时候，led使能脚不要使能

代码

void ws2812_power_open(void)

{

printf("%s\n",func);

GPIOFSET = BIT(4);

}

void ws2812_power_close(void)

{

printf("%s\n",func);

GPIOFCLR = BIT(4);

}

void ws2812_set_led_buf_offset(rgb_t* buf_p) //��buf��ʾ

{

rgb_t offset_buf $WS2812_LED_NUM$ ;

u8 k=0,i=0;

static u8 offset=1;

k = offset++;

if(offset>9)

offset=1;

while(i<WS2812_LED_NUM)

{

offset_buf $k$ = *(buf_p+i);

if(++k>=WS2812_LED_NUM)

k = 0;

i++;

}

ws2812_send_data((u8*)offset_buf,WS2812_LED_NUM*3);

}

void ws2812_set_blue_led_on(void)

{

u8 rgb_data $3\*10$ ={0x55,0x00,0x55,

0x55,0x00,0x55,

0x55,0x00,0x55,//

0x55,0x00,0x55,

};

ws2812_set_led_buf((rgb_t *)rgb_data);

}

void ws2812_set_red_led_on(void)

{

u8 rgb_data $3\*10$ ={0x00,0xAA,0x00,

0x00,0xAA,0x00,

0x00,0xAA,0x00,//

0x00,0xAA,0x00,

};

ws2812_set_led_buf((rgb_t *)rgb_data);

}

void ws2812_set_red_blue_led_on(void)

{

u8 rgb_data $3\*10$ ={0x00,0xAA,0xAA,

0x00,0xAA,0xAA,

0x00,0xAA,0xAA,//

0x00,0xAA,0xAA,

};

ws2812_power_open();

ws2812_set_led_buf((rgb_t *)rgb_data);

}

WS2812_DRIVER_SECTION

void ws2812_set_blue_breath(void)

{

u8 rgb_data $3\*10$ ={0x00,0x00,0x00,

0x00,0x00,0x00,

0x00,0x00,0x00,//

0x00,0x00,0x00,

};

u8 step=5;

u8 i;

bool dir_up = sys_cb.dir_up;

u8 curValue=sys_cb.curValue;

static u8 offCnt=0;

if(dir_up)

{

if(curValue+step<100+10)//100

curValue+=step;

else{

if(offCnt++==4)

{

dir_up=false;

offCnt=0;

}

else {

if(curValue>10+10) //step

curValue-=step;

else{

if(offCnt++==4)

{

dir_up=true;

offCnt=0;

}

for(i=0;i<3*WS2812_LED_NUM;i++)

{

//j=i/3;

if((i)%3==2)

{

rgb_data $i$ =curValue;

}

//20230818

else if((i)%3==0)//g

{

rgb_data $i$ =curValue;//5+curValue/5;

}

sys_cb.dir_up=dir_up;

sys_cb.curValue=curValue;

ws2812_set_led_buf((rgb_t *)rgb_data);

}

void ws2812_set_red_breath(void)

{

u8 rgb_data $3\*10$ ={0x00,0x00,0x00,// g r b

0x00,0x00,0x00,

0x00,0x00,0x00,//

0x00,0x00,0x00,

};

u8 step=2;//5

u8 i,j;

bool dir_up = sys_cb.dir_up;

u8 curValue=sys_cb.curValue;

static u8 offCnt=0;

if(dir_up)

{

if(curValue+step<50)//100

curValue+=step;

else{

if(offCnt++==4)

{

dir_up=false;

offCnt=0;

}

else {

if(curValue>step)

curValue-=step;

else{

if(offCnt++==4)

{

dir_up=true;

offCnt=0;

}

for(i=1;i<3*WS2812_LED_NUM;i++)

{

j=i/3;

if((i-j*3)%3==1)

{

rgb_data $i$ =curValue;

}

sys_cb.dir_up=dir_up;

sys_cb.curValue=curValue;

//printf("ws2812_set_red_breath:%d\n",sys_cb.curValue);

ws2812_set_led_buf((rgb_t *)rgb_data);

}

void ws2812_set_call_led(void)

{

printf("ws2812_set_call_led:%d\n",sys_cb.ledStatus);

if(sys_cb.ledStatus!=LOW_BAT_FLASH)

{

sys_cb.ledStatus=THIRD_CALL_FLASH;

ws2812_power_open();

}

void ws2812_set_low_led(void)

{

//printf("ws2812_set_low_led:%d\n",sys_cb.ledStatus);

if(sys_cb.ledStatus==ALL_LED_OFF)

sys_cb.ledStatus=LOW_BAT_FLASH;

}

void ws2812_set_off_led(void)

{

printf("ws2812_set_off_led:%d\n",sys_cb.ledStatus);

//if(sys_cb.ledStatus!=LOW_BAT_FLASH)

{

sys_cb.ledStatus=ALL_LED_OFF;

ws2812_led_clear();

ws2812_power_close();

}

void ws2812_set_blue_breath_start(void)

{

printf("ws2812_set_blue_breath_start:%d\n",sys_cb.ledStatus);

sys_cb.ledStatus=BLUE_BREATH;

sys_cb.curValue=0x8;

sys_cb.dir_up=true;

ws2812_power_open();

}

void ws2812_set_blue_breath_stop(void)

{

printf("ws2812_set_off_led:%d\n",sys_cb.ledStatus);

sys_cb.ledStatus=ALL_LED_OFF;

ws2812_led_clear();

ws2812_power_close();

}

void ws2812_set_red_breath_start(void)

{

printf("ws2812_set_off_led:%d\n",sys_cb.ledStatus);

sys_cb.ledStatus=RED_BREATH;

sys_cb.curValue=0x0;

sys_cb.dir_up=true;

ws2812_power_open();

}

void ws2812_set_red_breath_stop(void)

{

printf("ws2812_set_off_led:%d\n",sys_cb.ledStatus);

sys_cb.ledStatus=ALL_LED_OFF;

ws2812_led_clear();

ws2812_power_close();

}

void ws2812_set_horce_race_ring(void)

{

sys_cb.ledStatus=RING_HORCE_RACE_LED;

ws2812_power_open();

}

void ws2812_horce_race_ring_run(void)

{

u8 rgb_data $3\*10$ ={0x00,0xAA,0xAA,

0x00,0x88,0x88,

0x00,0x66,0x66,

0xAA,0x00,0x00,

0x88,0x00,0x00,

0x66,0x00,0x00,//

0x55,0x00,0x00,

0xAA,0x00,0xAA,

0x88,0x00,0x88,

0x66,0x00,0x66,

};

ws2812_set_led_buf_offset((rgb_t *)rgb_data);

}

void ws2812_set_horce_race_ring_stop(void)

{

sys_cb.ledStatus=ALL_LED_OFF;

ws2812_led_clear();

ws2812_power_close();

}

void ws2812_set_low_bat_led_on(void)

{

printf("%s,%d\n",func,tick_get());

ws2812_power_open();

ws2812_set_red_led_on();

}

void ws2812_set_low_bat_led_off(void)

{

printf("%s,%d\n",func,tick_get());

ws2812_led_clear();

ws2812_power_close();

}

void ws2812_set_poweroff_led_on(void)

{

sys_cb.ledStatus=0;

ws2812_power_open();

ws2812_set_red_led_on();

}