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working PWM demo. TODO: ADC reading

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jazz
2025-12-18 19:33:15 -06:00
parent 5e38a7397e
commit 1f6515e609
4 changed files with 111 additions and 69 deletions
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96
Core/Src/main.c
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@@ -18,7 +18,7 @@
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal_gpio.h"
#include "stm32f4xx_hal_tim.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
@@ -43,7 +43,7 @@
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim1;
/* USER CODE BEGIN PV */
uint16_t duty;
@@ -54,7 +54,7 @@ uint16_t duty;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC1_Init(void);
static void MX_TIM2_Init(void);
static void MX_TIM1_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
@@ -94,13 +94,17 @@ int main(void)
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC1_Init();
MX_TIM2_Init();
MX_TIM1_Init();
/* USER CODE BEGIN 2 */
//uint16_t val_raw;
//float voltage;
HAL_GPIO_WritePin(LED_ERR_GPIO_Port, LED_ERR_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LED_ON_GPIO_Port, LED_ON_Pin, GPIO_PIN_SET);
if (HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4) != HAL_OK)
Error_Handler();
/* USER CODE END 2 */
/* Infinite loop */
@@ -117,12 +121,27 @@ int main(void)
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_3, duty);
//if (HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4) != HAL_OK)
// Error_Handler();
// Rising:
__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_4, duty);
duty += 100;
if (duty >= 8000)
duty = 0;
/*
// Falling:
__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_4, duty);
duty -= 100;
if (duty <= 100)
duty = 8000;
*/
/* End Delay, lop this off later */
HAL_Delay(10);
}
/* USER CODE END 3 */
@@ -227,35 +246,48 @@ static void MX_ADC1_Init(void)
}
/**
* @brief TIM2 Initialization Function
* @brief TIM1 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM2_Init(void)
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM2_Init 0 */
/* USER CODE END TIM2_Init 0 */
/* 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 TIM2_Init 1 */
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM2_Init 1 */
htim2.Instance = TIM2;
htim2.Init.Prescaler = 0;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 7999;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 7999;
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(&htim2, &sMasterConfig) != HAL_OK)
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
@@ -263,20 +295,27 @@ static void MX_TIM2_Init(void)
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM2_Init 2 */
HAL_TIM_Base_Start(&htim2);
//HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_3);
/* We need error handling for this specifically */
if (HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_3))
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 TIM2_Init 2 */
HAL_TIM_MspPostInit(&htim2);
/* USER CODE END TIM1_Init 2 */
HAL_TIM_MspPostInit(&htim1);
}
@@ -294,6 +333,7 @@ static void MX_GPIO_Init(void)
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, LED_ON_Pin|LED_ERR_Pin, GPIO_PIN_RESET);