ws2812b led pwm dma print
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2023 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
//#include <stdlib.h>
//#include <string.h>
#include <math.h>
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim1;
TIM_HandleTypeDef htim3;
DMA_HandleTypeDef hdma_tim1_ch1;
DMA_HandleTypeDef hdma_tim3_ch1_trig;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_TIM3_Init(void);
static void MX_TIM1_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
#define LED_MAX 50
#define USE_BRIGHTNESS 1
uint8_t LED_Data[LED_MAX][4];
uint8_t LED_Mod[LED_MAX][4]; // led brightness
int datasentflag=0;
void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim)
{
HAL_TIM_PWM_Stop_DMA(&htim1, TIM_CHANNEL_1);
datasentflag=1;
}
void Set_LED (int LEDnum, int Red, int Green, int Blue)
{
LED_Data[LEDnum][0] = LEDnum;
LED_Data[LEDnum][1] = Red;
LED_Data[LEDnum][2] = Green;
LED_Data[LEDnum][3] = Blue;
}
#define PI 3.14159265
void Set_Brightness (int brightness) // 0-45
// 255 -> 100%, 127 -> 50%, 63 -> 25%
{
#if USE_BRIGHTNESS
if (brightness > 45) brightness = 45;
for ( int i = 0; i < LED_MAX; i++)
{
LED_Mod[i][0] = LED_Data[i][0];
for ( int j = 1; j < 4 ; j++ )
{
float angle = 90-brightness;
angle = angle*PI/180;
LED_Mod[i][j] = (LED_Data[i][j])/(tan(angle));
}
}
#endif
}
uint16_t pwmData[(24*LED_MAX)+50]; // 24=>8+8+8, *LED_MAX(num), 50 : reset code
void WS2812_Send ( void )
{
uint32_t indx = 0;
uint32_t color;
for ( int i =0 ; i < LED_MAX; i++ )
{
// LED_Mod[i][1] = RED, LED_Mod[i][2] = GREEN, LED_Mod[i][3] = BLUE
color = ((LED_Mod[i][1]<<16) | (LED_Mod[i][2]<<8) | (LED_Mod[i][3]));
for ( int i = 23; i >= 0; i-- )
{
// color bit checking and &
if ( color&(1<<i)) // bit 1
{
pwmData[indx] = 60;
}
else pwmData[indx] = 30; // bit 0
indx++;
}
}
// WS2812B reset code is 50us
for ( int i =0; i< 50; i++ )
{
pwmData[indx] = 0;
indx++;
}
HAL_TIM_PWM_Start_DMA(&htim1, TIM_CHANNEL_1, (uint32_t *)pwmData, indx);
while (!datasentflag){};
datasentflag = 0;
}
uint16_t effStep = 0;
uint8_t rainbow_effect_right() {
float factor1, factor2;
uint16_t ind;
for(uint16_t j=0;j<10;j++) {
ind = 49 - (int16_t)(effStep - j * 1) % 49;
switch((int)((ind % 49) / 16.333333333333332)) {
case 0: factor1 = 1.0 - ((float)(ind % 49 - 0 * 16.333333333333332) / 16.333333333333332);
factor2 = (float)((int)(ind - 0) % 49) / 16.333333333333332;
Set_LED(j, 255 * factor1 + 0 * factor2, 0 * factor1 + 255 * factor2, 0 * factor1 + 0 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
case 1: factor1 = 1.0 - ((float)(ind % 49 - 1 * 16.333333333333332) / 16.333333333333332);
factor2 = (float)((int)(ind - 16.333333333333332) % 49) / 16.333333333333332;
Set_LED(j, 0 * factor1 + 0 * factor2, 255 * factor1 + 0 * factor2, 0 * factor1 + 255 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
case 2: factor1 = 1.0 - ((float)(ind % 49 - 2 * 16.333333333333332) / 16.333333333333332);
factor2 = (float)((int)(ind - 32.666666666666664) % 49) / 16.333333333333332;
Set_LED(j, 0 * factor1 + 255 * factor2, 0 * factor1 + 0 * factor2, 255 * factor1 + 0 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
}
}
if(effStep >= 49) {effStep = 0; return 0x03; }
else effStep++;
return 0x01;
}
uint8_t rainbow_effect_left() {
float factor1, factor2;
uint16_t ind;
for(uint16_t j=0;j<50;j++) {
ind = effStep + j * 0.9629629629629629;
switch((int)((ind % 286) / 95.33333333333333)) {
case 0: factor1 = 1.0 - ((float)(ind % 286 - 0 * 95.33333333333333) / 95.33333333333333);
factor2 = (float)((int)(ind - 0) % 286) / 95.33333333333333;
Set_LED(j, 255 * factor1 + 0 * factor2, 0 * factor1 + 255 * factor2, 0 * factor1 + 0 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
case 1: factor1 = 1.0 - ((float)(ind % 286 - 1 * 95.33333333333333) / 95.33333333333333);
factor2 = (float)((int)(ind - 95.33333333333333) % 286) / 95.33333333333333;
Set_LED(j, 0 * factor1 + 0 * factor2, 255 * factor1 + 0 * factor2, 0 * factor1 + 255 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
case 2: factor1 = 1.0 - ((float)(ind % 286 - 2 * 95.33333333333333) / 95.33333333333333);
factor2 = (float)((int)(ind - 190.66666666666666) % 286) / 95.33333333333333;
Set_LED(j, 0 * factor1 + 255 * factor2, 0 * factor1 + 0 * factor2, 255 * factor1 + 0 * factor2);
Set_Brightness(10);
WS2812_Send();
break;
}
}
if(effStep >= 286) {effStep = 0; return 0x03; }
else effStep++;
return 0x01;
}
/*
* version 1
void send ( int Green, int Red, int Blue)
{
// data
uint32_t data = (Green<<16) | (Red<<8) | Blue;
for ( int i = 23; i >= 0; i-- )
{
if ( data&(1<<i)) pwmData[i] = 60; // code 1
else pwmData[i] = 30; // code 0
}
// pwm data send !
HAL_TIM_PWM_Start_DMA(&htim1, TIM_CHANNEL_1, (uint32_t *)pwmData, 24);
}
*/
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_TIM3_Init();
MX_TIM1_Init();
/* USER CODE BEGIN 2 */
// send (5, 255, 101);
// for ( int i = 0; i < 10; i++ )
// {
// Set_LED(i, 255, 255, 0);
// }
//
Set_LED(0,255,0,0);
Set_Brightness(10);
WS2812_Send();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
/*
for ( int i = 0 ; i <= 45; i++ )
{
Set_LED(i, rand(), rand(), rand());
Set_Brightness(i);
WS2812_Send();
HAL_Delay(50);
}
for ( int i = 45 ; i >= 0; i-- )
{
Set_Brightness(i);
WS2812_Send();
HAL_Delay(50);
}*/
// rainbow_effect_right();
rainbow_effect_left();
HAL_Delay (30);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 144;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief TIM1 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 90-1;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
sBreakDeadTimeConfig.DeadTime = 0;
sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM1_Init 2 */
/* USER CODE END TIM1_Init 2 */
HAL_TIM_MspPostInit(&htim1);
}
/**
* @brief TIM3 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM3_Init(void)
{
/* USER CODE BEGIN TIM3_Init 0 */
/* USER CODE END TIM3_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM3_Init 1 */
/* USER CODE END TIM3_Init 1 */
htim3.Instance = TIM3;
htim3.Init.Prescaler = 0;
htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
htim3.Init.Period = 90;
htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_Init(&htim3) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM3_Init 2 */
/* USER CODE END TIM3_Init 2 */
HAL_TIM_MspPostInit(&htim3);
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
__HAL_RCC_DMA2_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream4_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream4_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream4_IRQn);
/* DMA2_Stream1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream1_IRQn);
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */PE9에 timer1의 채널을 걸어서 출력을 pwm 출력을 함
ws2812b led에 Rainbow 색 나타내는 코드 입니다.
