Question
Having difficulty getting a timer interrupt to fire- Accidentally deleted the source so here it is......
/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;
TIM_HandleTypeDef htim17;
UART_HandleTypeDef huart1;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_TIM17_Init(void);
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t Snd_Tx_Data[5]; //SPI data
uint8_t Audio; //var to hold which audio playback file
uint8_t Cntrl_Rx_Data[4]; //RX Data from Nextion - 4 bytes; start-page#-data-end char
int Cntrl; //used for debug
uint8_t Timer; //Var for amount of time to play the audio file selected
uint8_t timer_val;
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
Cntrl=Cntrl_Rx_Data[2]; //used for double-check pulling 3rd byte works - Live Expression in debug
switch (Cntrl_Rx_Data[2]) //use the 3rd byte in the packet to decide what we send out SPI
{
case 'A':
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_2, GPIO_PIN_RESET); //turn ON the BLUE and turn OFF the RED
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
break;
case 'B':
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_1, GPIO_PIN_RESET); //turn ON the RED and turn OFF the BLUE
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_2, GPIO_PIN_SET);
break;
case 'C':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0xB8,0x03,0x00};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,3,100); //send HEX B8-03-00 out SPI - high volume
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
}
case 'D':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0xB8,0x03,0x80};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,3,100); //send HEX B8-03-80 out SPI - med volume
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
}
case 'E':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0xB8,0x03,0x40};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,3,100); //send HEX B8-03-40 out SPI - low volume
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
}
case 'F':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0xA4,0x00,0x03,0xFF,0xF2};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,5,100); //send HEX A4-00-03-FF-F2 out SPI - loop Audio1
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
} //need to figure out how to select Audio1-4 1st......
case 'G':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0xA6,0x00,Audio};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,3,100); //send HEX B8-03-00 out SPI - PLAYs whatever is selected
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
} //need to figure out how to select Audio1-4 1st.......
case 'H':
{
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_RESET); //Pull Sound Chip CS LOW
uint8_t SPI_TX_BUF[] = {0x2A};
HAL_SPI_Transmit (&hspi1, SPI_TX_BUF,1,100); //send HEX 2A out SPI - STOP
HAL_GPIO_WritePin (GPIOB, GPIO_PIN_1, GPIO_PIN_SET); //Pull Sound Chip CS HIGH
break;
}
HAL_UART_Receive_IT (&huart1, Cntrl_Rx_Data, 4); //restart the interrupt reception mode
}
//Callback: timer has reset
void HAL_TIM_PeriodElaspedCallback(TIM_HandleTypeDef *htim) //original
{
//Check which version of the timer triggered this callback and toggle the LED
if (htim == &htim17)
{
HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_4); //visual to use for debug
}
HAL_TIM_Base_Start_IT(&htim17); //restart the Timer17 interrupt
}
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_1, GPIO_PIN_SET); //turn OFF LEDs
HAL_GPIO_WritePin (GPIOA, GPIO_PIN_2, GPIO_PIN_SET); //turn OFF LEDs
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI1_Init();
MX_USART1_UART_Init();
MX_TIM17_Init();
/* USER CODE BEGIN 2 */
HAL_UART_Receive_IT (&huart1, Cntrl_Rx_Data, 4); //Rx data from keypad interrupt style
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
// HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_4); //visual to use for debug when needed
// HAL_Delay(750);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/** 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_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL5;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_SYSCLK;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief SPI1 Initialization Function
* @param None
* @retval None
*/
static void MX_SPI1_Init(void)
{
/* SPI1 parameter configuration*/
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_HIGH;
hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief TIM17 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM17_Init(void)
{
htim17.Instance = TIM17;
htim17.Init.Prescaler = 4000-1;
htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
htim17.Init.Period = 10000-1;
htim17.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim17.Init.RepetitionCounter = 0;
htim17.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim17) != HAL_OK)
{
Error_Handler();
}
}While I am learning each day and have made a great deal of self-progress, I apparently do not yet posses enough background to spot what I am doing wrong.
This should be a simple timer interrupt and I will eventually use it to cancel another function but all I am trying to di is fire a simple LED. Good Grief.
I sincerely want to 'learn how to fish' here so any help pointing me in the right direction will yield an Adult Beverage being had in your honor later this evening......
