main.c File Reference

: Main program body More...

#include "main.h"

Functions
void	SystemClock_Config (void)
	System Clock Configuration.
static void	MX_GPIO_Init (void)
	GPIO Initialization Function.
static void	MX_USART1_UART_Init (void)
	USART1 Initialization Function.
static void	MX_USART2_UART_Init (void)
	USART2 Initialization Function.
static void	MX_TIM6_Init (void)
	TIM6 Initialization Function.
static void	MX_TIM7_Init (void)
	TIM7 Initialization Function.
void	HAL_TIM_PeriodElapsedCallback (TIM_HandleTypeDef *htim)
	Timers for DMX Break and MAB (Mark After Break) signal duration control.
void	HAL_UART_TxCpltCallback (UART_HandleTypeDef *huart)
	DMX data transmit ended, next frame Break signal start.
void	HAL_UART_RxCpltCallback (UART_HandleTypeDef *huart)
	For receive FW control packets from PC (web server)
int	main (void)
	The application entry point.
void	Error_Handler (void)
	This function is executed in case of error occurrence.

Variables
TIM_HandleTypeDef	htim6
TIM_HandleTypeDef	htim7
UART_HandleTypeDef	huart1
UART_HandleTypeDef	huart2
uint8_t	vcp_rx_buf [3]
uint8_t	dmx_values [DMX_CHANNEL_COUNT+1] = {}

Detailed Description

: Main program body

Attention

Copyright (c) 2025 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.

Function Documentation

Error_Handler()

void Error_Handler

(

void

)

This function is executed in case of error occurrence.

Return values

None

HAL_TIM_PeriodElapsedCallback()

void HAL_TIM_PeriodElapsedCallback

(

TIM_HandleTypeDef *

htim

)

Timers for DMX Break and MAB (Mark After Break) signal duration control.

Parameters

[in]

htim

Period elapsed timer handler

DMX signal transmit sequence below:

               Break (set low) -> MAB (set high) -> Data signal
               |                  |                 |
[UART1 end]--- | -----[TIM6]----- | -----[TIM7]---- | ---[UART1]
               |      > 88us      |      > 8us      |

Note

Actual Break and MAB signal been longer than 88us, 8us, cause of UART init/deinit process

HAL_UART_RxCpltCallback()

void HAL_UART_RxCpltCallback

(

UART_HandleTypeDef *

huart

)

For receive FW control packets from PC (web server)

Parameters

[in]

huart

RX completed uart handler

HAL_UART_TxCpltCallback()

void HAL_UART_TxCpltCallback

(

UART_HandleTypeDef *

huart

)

DMX data transmit ended, next frame Break signal start.

Parameters

[in]

huart

TX completed uart handler

main()

int main

(

void

)

The application entry point.

Return values

int

MX_GPIO_Init()

void MX_GPIO_Init ( void )

static

GPIO Initialization Function.

Parameters

None

Return values

None

MX_TIM6_Init()

void MX_TIM6_Init ( void )

static

TIM6 Initialization Function.

Parameters

None

Return values

None

MX_TIM7_Init()

void MX_TIM7_Init ( void )

static

TIM7 Initialization Function.

Parameters

None

Return values

None

MX_USART1_UART_Init()

void MX_USART1_UART_Init ( void )

static

USART1 Initialization Function.

Parameters

None

Return values

None

MX_USART2_UART_Init()

void MX_USART2_UART_Init ( void )

static

USART2 Initialization Function.

Parameters

None

Return values

None

SystemClock_Config()

void SystemClock_Config

(

void

)

System Clock Configuration.

Return values

None

Initializes the RCC Oscillators according to the specified parameters in the RCC_OscInitTypeDef structure.

Initializes the CPU, AHB and APB buses clocks