Hi everyone,
I'm trying to generate a sine wave using PWM output updated by GPDMA transfer on an STM32H5 device.
I'm following this tutorial:
STM32 Change PWM Duty Cycle With DMA For Sine Wave Generation
However, when I try to implement it with STM32H5 (which uses GPDMA instead of classical DMA), I can't get any output at all or get the PWM to update properly.
My Goal:
Generate a continuous PWM output.
Update the duty cycle from a sine wave lookup table stored in memory.
Use GPDMA Standard Request Mode to update the TIM2 compare register (TIM2->CCR1).
My Setup:
MCU: STM32H563ZI (Nucleo-H563ZI board)
PWM Output: TIM2_CH1 on pin PE0
Timer for DMA triggering: TIM4_CH1
DMA Mode: GPDMA Standard Request Mode (not Linked List)
Circular Mode: Enabled
Data Size: Word (32 bits)
Transfer: Memory to Peripheral (M2P)
PWM Output (TIM2_CH1):
The PWM output is generated on PE0:
Notes:
TIM2 configured for PWM mode 1
Channel 1 is used
Output routed to PE0 (verified)
TIM4 Configuration(To Operate in OC Mode On CH1):
Here is how TIM4 is configured:
Note:
Number 100 according to the guide (will be replaced in the code).
GPDMA Configuration:
Here is how I configured GPDMA1 Channel 0:
Notes:
Source Increment: Enabled
Destination Increment: Disabled
Mode: Circular
Request Source: TIM4_CH1
Direction: Memory-to-Peripheral
Adds the main code at the end.
My Issue:
Despite setting everything according to the tutorial and carefully configuring CubeMX (which works on a microcontroller with classic DMA):
I don't get any output signal at all on the PWM pin (PE0).
The output voltage stays constant at 0V — no fixed PWM, no sine modulation.
GPDMA transfer does not seem to trigger.
I would be glad to some help:
What is the correct sequence to start a GPDMA standard request transfer triggered by TIM4_CH1?
Is there any extra configuration required for GPDMA Standard Mode in STM32H5?
Is there a minimal example or reference project for sine wave generation with PWM and GPDMA (without Linked List Mode)?
What could prevent GPDMA from starting even if all configurations seem correct?
Do I need to manually trigger anything additional to "arm" GPDMA transfers in Standard Request Mode?
Are there different code commands for GPDMA than classic DMA?
Thank you very much in advance!
Any insights, sample code, tips, or shared experience would be highly appreciated.
Best regards,
Tzahi
The main.c code:
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : 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.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define NS 128
#define TIM4CLK 72000000
#define F_SIGNAL 1000
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
uint32_t Wave_LUT[NS] = {
512, 537, 562, 587, 612, 637, 661, 685, 709, 732, 754, 776, 798, 818, 838,
857, 875, 893, 909, 925, 939, 952, 965, 976, 986, 995, 1002, 1009, 1014, 1018,
1021, 1023, 1023, 1022, 1020, 1016, 1012, 1006, 999, 990, 981, 970, 959, 946, 932,
917, 901, 884, 866, 848, 828, 808, 787, 765, 743, 720, 697, 673, 649, 624,
600, 575, 549, 524, 499, 474, 448, 423, 399, 374, 350, 326, 303, 280, 258,
236, 215, 195, 175, 157, 139, 122, 106, 91, 77, 64, 53, 42, 33, 24,
17, 11, 7, 3, 1, 0, 0, 2, 5, 9, 14, 21, 28, 37, 47,
58, 71, 84, 98, 114, 130, 148, 166, 185, 205, 225, 247, 269, 291, 314,
338, 362, 386, 411, 436, 461, 486, 511
};
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
COM_InitTypeDef BspCOMInit;
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim4;
DMA_NodeTypeDef Node_GPDMA1_Channel0;
DMA_QListTypeDef List_GPDMA1_Channel0;
DMA_HandleTypeDef handle_GPDMA1_Channel0;
/* USER CODE BEGIN PV */
uint32_t DestAddress = (uint32_t) &(TIM2->CCR1);
uint32_t TIM4_Ticks = TIM4CLK / (NS * F_SIGNAL);
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_GPDMA1_Init(void);
static void MX_TIM2_Init(void);
static void MX_TIM4_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* 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_GPDMA1_Init();
MX_TIM2_Init();
MX_TIM4_Init();
/* USER CODE BEGIN 2 */
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);
HAL_TIM_OC_Start(&htim4, TIM_CHANNEL_1);
HAL_DMA_Start_IT(&handle_GPDMA1_Channel0, (uint32_t)Wave_LUT, DestAddress, NS);
__HAL_TIM_ENABLE_DMA(&htim4, TIM_DMA_CC1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* 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};
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
/** 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_PLL1_SOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 4;
RCC_OscInitStruct.PLL.PLLN = 72;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1_VCIRANGE_1;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1_VCORANGE_WIDE;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
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_CLOCKTYPE_PCLK3;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
{
Error_Handler();
}
/** Configure the programming delay
*/
__HAL_FLASH_SET_PROGRAM_DELAY(FLASH_PROGRAMMING_DELAY_1);
}
/**
* @brief GPDMA1 Initialization Function
* None
* @retval None
*/
static void MX_GPDMA1_Init(void)
{
/* USER CODE BEGIN GPDMA1_Init 0 */
/* USER CODE END GPDMA1_Init 0 */
/* Peripheral clock enable */
__HAL_RCC_GPDMA1_CLK_ENABLE();
/* GPDMA1 interrupt Init */
HAL_NVIC_SetPriority(GPDMA1_Channel0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(GPDMA1_Channel0_IRQn);
/* USER CODE BEGIN GPDMA1_Init 1 */
/* USER CODE END GPDMA1_Init 1 */
/* USER CODE BEGIN GPDMA1_Init 2 */
/* USER CODE END GPDMA1_Init 2 */
}
/**
* @brief TIM2 Initialization Function
* None
* @retval None
*/
static void MX_TIM2_Init(void)
{
/* USER CODE BEGIN TIM2_Init 0 */
/* USER CODE END TIM2_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM2_Init 1 */
/* USER CODE END TIM2_Init 1 */
htim2.Instance = TIM2;
htim2.Init.Prescaler = 0;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 1023;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &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(&htim2, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM2_Init 2 */
/* USER CODE END TIM2_Init 2 */
HAL_TIM_MspPostInit(&htim2);
}
/**
* @brief TIM4 Initialization Function
* None
* @retval None
*/
static void MX_TIM4_Init(void)
{
/* USER CODE BEGIN TIM4_Init 0 */
/* USER CODE END TIM4_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM4_Init 1 */
/* USER CODE END TIM4_Init 1 */
htim4.Instance = TIM4;
htim4.Init.Prescaler = 0;
htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
htim4.Init.Period = TIM4_Ticks-1; // <---- This Line
htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_OC_Init(&htim4) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_TIMING;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_OC_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM4_Init 2 */
/* USER CODE END TIM4_Init 2 */
}
/**
* @brief GPIO Initialization Function
* None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
/*Configure GPIO pins : RMII_MDC_Pin RMII_RXD0_Pin RMII_RXD1_Pin */
GPIO_InitStruct.Pin = RMII_MDC_Pin|RMII_RXD0_Pin|RMII_RXD1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pins : RMII_REF_CLK_Pin RMII_MDIO_Pin RMII_CRS_DV_Pin */
GPIO_InitStruct.Pin = RMII_REF_CLK_Pin|RMII_MDIO_Pin|RMII_CRS_DV_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : VBUS_SENSE_Pin */
GPIO_InitStruct.Pin = VBUS_SENSE_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(VBUS_SENSE_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : UCPD_CC1_Pin UCPD_CC2_Pin */
GPIO_InitStruct.Pin = UCPD_CC1_Pin|UCPD_CC2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : RMII_TXD1_Pin */
GPIO_InitStruct.Pin = RMII_TXD1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(RMII_TXD1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : UCPD_FLT_Pin */
GPIO_InitStruct.Pin = UCPD_FLT_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(UCPD_FLT_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : USB_FS_N_Pin USB_FS_P_Pin */
GPIO_InitStruct.Pin = USB_FS_N_Pin|USB_FS_P_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF10_USB;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : RMII_TXT_EN_Pin RMI_TXD0_Pin */
GPIO_InitStruct.Pin = RMII_TXT_EN_Pin|RMI_TXD0_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
/*Configure GPIO pins : ARD_D1_TX_Pin ARD_D0_RX_Pin */
GPIO_InitStruct.Pin = ARD_D1_TX_Pin|ARD_D0_RX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF8_LPUART1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* 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.
* file: pointer to the source file name
* 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 */
