写一个用stm32f103c8t6驱动10个ws2812灯的代码

首先需要准备以下材料：

1. STM32F103C8T6开发板
2. 10个WS2812灯珠
3. 杜邦线若干根

接下来，我们可以按照以下步骤进行：

1. 首先需要配置单片机的时钟，以及引脚的功能和模式。以下是一个简单的初始化代码：

#include "stm32f10x.h"

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void TIM_Configuration(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

    TIM_TimeBaseInitStructure.TIM_Period = 35999;
    TIM_TimeBaseInitStructure.TIM_Prescaler = 71;
    TIM_TimeBaseInitStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);

    TIM_OCInitTypeDef TIM_OCInitStructure;

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 0;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM2, &TIM_OCInitStructure);

    TIM_Cmd(TIM2, ENABLE);
}

int main(void)
{
    GPIO_Configuration();
    TIM_Configuration();

    while (1)
    {
    }
}

2. 接下来需要编写控制灯光的代码。由于WS2812的通讯协议比较复杂，我们可以使用已有的库来简化开发。以下是一个使用FastLED库控制灯光的代码：

#include "stm32f10x.h"
#include "FastLED.h"

#define LED_PIN 3
#define NUM_LEDS 10

CRGB leds[NUM_LEDS];

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void TIM_Configuration(void)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

    TIM_TimeBaseInitStructure.TIM_Period = 35999;
    TIM_TimeBaseInitStructure.TIM_Prescaler = 71;
    TIM_TimeBaseInitStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure);

    TIM_OCInitTypeDef TIM_OCInitStructure;

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 0;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM2, &TIM_OCInitStructure);

    TIM_Cmd(TIM2, ENABLE);
}

int main(void)
{
    GPIO_Configuration();
    TIM_Configuration();
    FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);

    while (1)
    {
        for (int i = 0; i < NUM_LEDS; i++)
        {
            leds[i] = CRGB::Red;
            FastLED.show();
            delay(50);
        }

        for (int i = 0; i < NUM_LEDS; i++)
        {
            leds[i] = CRGB::Green;
            FastLED.show();
            delay(50);
        }

        for (int i = 0; i < NUM_LEDS; i++)
        {
            leds[i] = CRGB::Blue;
            FastLED.show();
            delay(50);
        }
    }
}

以上代码使用了FastLED库来控制灯光，可以通过修改leds数组来实现不同的灯光效果。