WS2812 HAL库 PWM 程序 stm32f030k6 TIM1-1,并在主函数中引用函数点亮灯珠
时间: 2024-04-18 14:31:43 浏览: 160
STM32_HAL库封装函数_点亮LED
好的,以下是一个在主函数中引用WS2812_PWM_Init函数和WS2812_Update_Buffer函数来点亮WS2812灯珠的示例代码:
```c
#include "stm32f0xx_hal.h"
#define WS2812_LED_COUNT 8
#define WS2812_TIM_PERIOD 50
#define WS2812_TIM_PRESCALER ((SystemCoreClock / 1000000) - 1)
typedef struct {
uint8_t red;
uint8_t green;
uint8_t blue;
} WS2812_RGB;
WS2812_RGB ws2812_buffer[WS2812_LED_COUNT];
TIM_HandleTypeDef htim;
void WS2812_PWM_Init(void) {
__HAL_RCC_TIM1_CLK_ENABLE();
htim.Instance = TIM1;
htim.Init.Prescaler = WS2812_TIM_PRESCALER;
htim.Init.CounterMode = TIM_COUNTERMODE_UP;
htim.Init.Period = WS2812_TIM_PERIOD;
htim.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_PWM_Init(&htim);
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = GPIO_PIN_8; // 使用PA8引脚,根据实际情况修改
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF2_TIM1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void WS2812_Update_Buffer(void) {
for (uint8_t i = 0; i < WS2812_LED_COUNT; i++) {
WS2812_RGB *rgb = &ws2812_buffer[i];
for (uint8_t j = 0; j < 8; j++) {
uint16_t high_time = (rgb->green & (0x80 >> j)) ? (WS2812_TIM_PERIOD * 7 / 12) : (WS2812_TIM_PERIOD * 4 / 12);
TIM_OC_InitTypeDef sConfigOC;
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = high_time;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
HAL_TIM_PWM_ConfigChannel(&htim, &sConfigOC, TIM_CHANNEL_1);
HAL_TIM_PWM_Start(&htim, TIM_CHANNEL_1);
HAL_Delay(1);
HAL_TIM_PWM_Stop(&htim, TIM_CHANNEL_1);
}
}
}
int main(void) {
// 初始化HAL库
HAL_Init();
// 初始化系统时钟
SystemClock_Config();
// 初始化WS2812 PWM
WS2812_PWM_Init();
// 设置灯珠颜色
ws2812_buffer[0].red = 255; // 设置第一个灯珠为红色
ws2812_buffer[0].green = 0;
ws2812_buffer[0].blue = 0;
// 更新WS2812数据缓冲区
WS2812_Update_Buffer();
while (1) {
// 其他操作或代码
}
}
```
以上代码示例中,主函数中首先进行了HAL库的初始化和系统时钟的配置。然后调用WS2812_PWM_Init函数来初始化WS2812的PWM定时器和引脚。接着设置ws2812_buffer数组中第一个灯珠的颜色为红色,并调用WS2812_Update_Buffer函数来更新WS2812的数据缓冲区,点亮灯珠。最后进入主循环,可以添加其他操作或代码。
希望以上示例对您有所帮助!如果还有其他问题,请随时提问。
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