I am working with an stm32 f767zit and I am trying to generate PWM signals to control servos, but they are not generating correctly. I followedd the tutorial from here Deep Blue Embedded and was able to generate the PWM signals just fine on an stm32 f103rb, but I switched to the f767zit because I needed more PWM outputs. I have already looked at the HAL documentation and for both and compared them and as far as I can tell there are not any differences in how the pwm signals should be generated.
I have done several projects with the stm32 boards but I am still sort of a noob. I have looked for many hours for a solution but I can not find one. Sorry if this is actually just something simple and basic that I am missing.
Here are screen shots of the pwm outputs. as you can see the f103rb generates them normally, sguare waves at 50hz and 3.3v peaks. The pwm signals on the f767 are made up of lots of spikes and have peaks at 10mV. Although, they do seem to be generating at the correct pulse length
PWM Output of f103rb
PWM Output of f767
In my code all I am trying to do is initalize the servos and the set them to a positon. There are 12 servos and they are using timers 1-4. The specific channels and pins can be seen in the Servo configuration code. My main code initializes all of the perifrials and then calls initServos() which calls SERVO_init() for each servo in SERVO_CfgParam. Then my main loop calls SERVO_moveto(). I am only moving one servo in the main code but I have tested every pin that I am using and get the same results.
I used the same meathod and code for controlling 3 servos on my f013rb without any problems. I cannot figure out what difference there is on the f767zit.
Main Code
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_USART3_UART_Init();
MX_USB_OTG_FS_PCD_Init();
MX_SPI1_Init();
MX_TIM1_Init();
MX_TIM2_Init();
MX_TIM3_Init();
MX_TIM4_Init();
/* USER CODE BEGIN 2 */
initServos();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
SERVO_MoveTo(11,90);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
Servo configuration.
typedef struct
{
GPIO_TypeDef * SERVO_GPIO;
uint16_t SERVO_PIN;
TIM_TypeDef* TIM_Instance;
uint32_t* TIM_CCRx;
uint32_t PWM_TIM_CH;
uint32_t TIM_CLK;
float MinPulse;
float MaxPulse;
}SERVO_CfgType;
const SERVO_CfgType SERVO_CfgParam[SERVO_NUM] =
{
// Servo Motor 1 Configurations
{
GPIOE,
GPIO_PIN_9,
TIM1,
&TIM1->CCR1,
TIM_CHANNEL_1,
72000000,
0.65,
2.3
},
// Servo Motor 2 Configurations
{
GPIOE,
GPIO_PIN_11,
TIM1,
&TIM1->CCR2,
TIM_CHANNEL_2,
72000000,
0.65,
2.3
},
// Servo Motor 3 Configurations
{
GPIOE,
GPIO_PIN_13,
TIM1,
&TIM1->CCR3,
TIM_CHANNEL_3,
72000000,
0.65,
2.3
},
// Servo Motor 4 Configurations
{
GPIOE,
GPIO_PIN_14,
TIM1,
&TIM1->CCR4,
TIM_CHANNEL_4,
72000000,
0.65,
2.3
},
// Servo Motor 5 Configurations
{
GPIOA,
GPIO_PIN_15,
TIM2,
&TIM2->CCR1,
TIM_CHANNEL_1,
72000000,
0.65,
2.3
},
// Servo Motor 6 Configurations
{
GPIOB,
GPIO_PIN_10,
TIM2,
&TIM2->CCR2,
TIM_CHANNEL_3,
72000000,
0.65,
2.3
},
// Servo Motor 7 Configurations
{
GPIOB,
GPIO_PIN_11,
TIM2,
&TIM2->CCR4,
TIM_CHANNEL_4,
72000000,
0.65,
2.3
},
// Servo Motor 8 Configurations
{
GPIOC,
GPIO_PIN_6,
TIM3,
&TIM3->CCR1,
TIM_CHANNEL_1,
72000000,
0.65,
2.3
},
// Servo Motor 9 Configurations
{
GPIOC,
GPIO_PIN_7,
TIM3,
&TIM3->CCR2,
TIM_CHANNEL_2,
72000000,
0.65,
2.3
},
// Servo Motor 10 Configurations
{
GPIOC,
GPIO_PIN_8,
TIM3,
&TIM3->CCR3,
TIM_CHANNEL_3,
72000000,
0.65,
2.3
},
// Servo Motor 11 Configurations
{
GPIOC,
GPIO_PIN_9,
TIM3,
&TIM3->CCR4,
TIM_CHANNEL_4,
72000000,
0.65,
2.3
},
// Servo Motor 12 Configurations
{
GPIOB,
GPIO_PIN_6,
TIM4,
&TIM4->CCR1,
TIM_CHANNEL_1,
72000000,
0.65,
2.3
}
};
Servo initialization function
void SERVO_Init(uint16_t au16_SERVO_Instance)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_HandleTypeDef htim;
uint32_t PSC_Value = 0;
uint32_t ARR_Value = 0;
//DWT_Delay_Init();
/*--------[ Configure The Servo PWM GPIO Pin ]-------*/
if(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO == GPIOA)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO == GPIOB)
{
__HAL_RCC_GPIOB_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO == GPIOC)
{
__HAL_RCC_GPIOC_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO == GPIOD)
{
__HAL_RCC_GPIOD_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO == GPIOE)
{
__HAL_RCC_GPIOE_CLK_ENABLE();
}
GPIO_InitStruct.Pin = SERVO_CfgParam[au16_SERVO_Instance].SERVO_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(SERVO_CfgParam[au16_SERVO_Instance].SERVO_GPIO, &GPIO_InitStruct);
/*--------[ Calculate The PSC & ARR Values To Maximize PWM Resolution ]-------*/
/* Those Equations Sets The F_pwm = 50Hz & Maximizes The Resolution*/
PSC_Value = (uint32_t) (SERVO_CfgParam[au16_SERVO_Instance].TIM_CLK / 3276800.0);
ARR_Value = (uint32_t) ((SERVO_CfgParam[au16_SERVO_Instance].TIM_CLK / (50.0*(PSC_Value+1.0)))-1.0);
/*--------[ Configure The Servo PWM Timer Channel ]-------*/
/*--[Check The Timer & Enable Its Clock]--*/
if(SERVO_CfgParam[au16_SERVO_Instance].TIM_Instance == TIM1)
{
__HAL_RCC_TIM1_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].TIM_Instance == TIM2)
{
__HAL_RCC_TIM2_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].TIM_Instance == TIM3)
{
__HAL_RCC_TIM3_CLK_ENABLE();
}
else if(SERVO_CfgParam[au16_SERVO_Instance].TIM_Instance == TIM4)
{
__HAL_RCC_TIM4_CLK_ENABLE();
}
htim.Instance = SERVO_CfgParam[au16_SERVO_Instance].TIM_Instance;
htim.Init.Prescaler = PSC_Value;
htim.Init.CounterMode = TIM_COUNTERMODE_UP;
htim.Init.Period = ARR_Value;
htim.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
HAL_TIM_Base_Init(&htim);
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
HAL_TIM_ConfigClockSource(&htim, &sClockSourceConfig);
HAL_TIM_PWM_Init(&htim);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim, &sMasterConfig);
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
HAL_TIM_PWM_ConfigChannel(&htim, &sConfigOC, SERVO_CfgParam[au16_SERVO_Instance].PWM_TIM_CH);
/*--------[ Calculate & Save The Servo Pulse Information ]-------*/
gs_SERVO_info[au16_SERVO_Instance].Period_Min = (uint16_t) (ARR_Value * (SERVO_CfgParam[au16_SERVO_Instance].MinPulse/20.0));
gs_SERVO_info[au16_SERVO_Instance].Period_Max = (uint16_t) (ARR_Value * (SERVO_CfgParam[au16_SERVO_Instance].MaxPulse/20.0));
/*--------[ Start The PWM Channel ]-------*/
HAL_TIM_PWM_Start(&htim, SERVO_CfgParam[au16_SERVO_Instance].PWM_TIM_CH);
}
Moving the servo
/* Moves A Specific Motor To A Specific Degree That Can Be Float Number */
void SERVO_MoveTo(uint16_t au16_SERVO_Instance, float af_Angle)
{
uint16_t au16_Pulse = 0;
au16_Pulse = ((af_Angle*(gs_SERVO_info[au16_SERVO_Instance].Period_Max - gs_SERVO_info[au16_SERVO_Instance].Period_Min))/180.0)
+ gs_SERVO_info[au16_SERVO_Instance].Period_Min;
*(SERVO_CfgParam[au16_SERVO_Instance].TIM_CCRx) = au16_Pulse;
}
GPIO and timer intitializations
/**
* #brief GPIO Initialization Function
* #param None
* #retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, LD1_Pin|LD3_Pin|LD2_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(USB_PowerSwitchOn_GPIO_Port, USB_PowerSwitchOn_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : USER_Btn_Pin */
GPIO_InitStruct.Pin = USER_Btn_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(USER_Btn_GPIO_Port, &GPIO_InitStruct);
/*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_VERY_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_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : LD1_Pin LD3_Pin LD2_Pin */
GPIO_InitStruct.Pin = LD1_Pin|LD3_Pin|LD2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(RMII_TXD1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : USB_PowerSwitchOn_Pin */
GPIO_InitStruct.Pin = USB_PowerSwitchOn_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(USB_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : USB_OverCurrent_Pin */
GPIO_InitStruct.Pin = USB_OverCurrent_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(USB_OverCurrent_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : RMII_TX_EN_Pin RMII_TXD0_Pin */
GPIO_InitStruct.Pin = RMII_TX_EN_Pin|RMII_TXD0_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
}
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 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 = 65535;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_OnePulse_Init(&htim1, TIM_OPMODE_SINGLE) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_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();
}
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_4) != 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.BreakFilter = 0;
sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
sBreakDeadTimeConfig.Break2Filter = 0;
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 TIM2 Initialization Function
* #param None
* #retval None
*/
static void MX_TIM2_Init(void)
{
/* USER CODE BEGIN TIM2_Init 0 */
/* USER CODE END TIM2_Init 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 = 65535;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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();
}
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM2_Init 2 */
/* USER CODE END TIM2_Init 2 */
HAL_TIM_MspPostInit(&htim2);
}
/**
* #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_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 = 65535;
htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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();
}
if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM3_Init 2 */
/* USER CODE END TIM3_Init 2 */
HAL_TIM_MspPostInit(&htim3);
}
/**
* #brief TIM4 Initialization Function
* #param None
* #retval None
*/
static void MX_TIM4_Init(void)
{
/* USER CODE BEGIN TIM4_Init 0 */
/* USER CODE END TIM4_Init 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 = 65535;
htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_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_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM4_Init 2 */
/* USER CODE END TIM4_Init 2 */
HAL_TIM_MspPostInit(&htim4);
}
Let me know if there is any more information that you need.
I think your problem might be due to the alternate function mapping. The F767 datasheet has a table on p.89 listing what values you should put into the GPIOn.AFR registers (GPIO_InitStruct.Alternate in the HAL - I assume) to get the right peripheral on the pin. It looks like your timer channels for those pins are all AF1, and you haven't defined which AF to use in your SERVO_Init routine. It's probably a good idea to fill in every member of the struct, even if you think it's unnecessary, just to make sure you don't miss anything deceptively important.
I am having a strange problem. I have a board with 2 UART interfaces (STM32F217) and I am using DMA to receive the data on both UARTs (USART1 and USART2).
USART2 works perfectly. I can send and receive data through it no problem, but I am having a problem with USART1. It only works properly the first transfer. If it just worked once and then stopped then I'd be ok, since it probably means that I just need to add the function for USART1 interruption and call its IRQHandler But my problem is that the next times it receives the data, but it drops the first few bytes (randomly ... sometimes drops 2 sometimes drops up to 6 bytes and it's not like it's a fast protocol, it has a 1s timeout).
Here is my workflow:
- Initialize UART;
Call Receive_DMA;
Protocol has variable size, it depends on the first bytes so I configured a fixed 256 circular receive transfer (maximum size for header + data) and check how many bytes have been received so far, if the amount matches the first byte then it's ok.
After error (did not receive entire packet, wrong CRC or timeout) or success then call
HAL_UART_DMAStop(&huart1);
and then
if(HAL_UART_Receive_DMA(&huart1, rx232buffer, 256) != HAL_OK) {
while(1);
}
This is done for both UARTs and one works perfectly and the other works well the first time and then starts dropping bytes.
Any idea of what could be the problem?
EDIT
Here's a version of my code. I wrote the functionality just now (inside main loop ... it's not exactly that but it works similar to that ... my code is kinda big and with many things not related to the communication so I just rewrote it like this ... as stated huart1 only works properly once and then drops bytes ... huart2 works fine .. huart1 is RS232 ... huart2 i RS485)
static void rxbuffer[256] = {0};
static void rx232buffer[256] = {0};
struct header {
int startWord;
int command;
int size;
};
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;
DMA_HandleTypeDef hdma_usart2_rx;
DMA_HandleTypeDef hdma_usart2_tx;
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA2_CLK_ENABLE();
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream5_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream5_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream5_IRQn);
/* DMA1_Stream6_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream6_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream6_IRQn);
/* DMA2_Stream2_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
/* DMA2_Stream7_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream7_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream7_IRQn);
}
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 57600;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
static void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
huart2.Init.BaudRate = 57600;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
int main(void)
{
int bytecount;
int bytecount232;
int rxlen485;
int rxlen232;
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_DMA_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
if(HAL_UART_Receive_DMA(&huart2, rxbuffer, 256) != HAL_OK) {
while(1);
}
if(HAL_UART_Receive_DMA(&huart1, rx232buffer, 256) != HAL_OK) {
while(1);
}
while(1) {
bytecount = __HAL_DMA_GET_COUNTER(&hdma_usart2_rx);
rxlen485 = 256 - bytecount;
bytecount232 = __HAL_DMA_GET_COUNTER(&hdma_usart1_rx);
rxlen232 = 256 - bytecount232;
if(rxlen485 >= sizeof(struct header)) {
//start timer
struct header *pHeader = rxbuffer;
if(pHeader->size == rxlen485 - sizeof(struct header)) {
//do something
HAL_UART_DMAStop(&huart2);
if(HAL_UART_Receive_DMA(&huart2, rxbuffer, 256) != HAL_OK) {
while(1);
}
if(timeout) { // purely demonstrative ... the timeout part
//do something
HAL_UART_DMAStop(&huart2);
if(HAL_UART_Receive_DMA(&huart2, rxbuffer, 256) != HAL_OK) {
while(1);
}
}
}
if(rxlen232 >= sizeof(struct header)) {
struct header *pHeader = rxbuffer;
if(pHeader->size == rxlen232 - sizeof(struct header)) {
//do something
HAL_UART_DMAStop(&huart1);
if(HAL_UART_Receive_DMA(&huart1, rx232buffer, 256) != HAL_OK) {
while(1);
}
if(timeout) { // purely demonstrative ... the timeout part
//do something
HAL_UART_DMAStop(&huart1);
if(HAL_UART_Receive_DMA(&huart1, rx232buffer, 256) != HAL_OK) {
while(1);
}
}
}
}
}
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
__NOP();
}
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
__NOP();
}
void USART2_IRQHandler(void)
{
/* USER CODE BEGIN USART2_IRQn 0 */
/* USER CODE END USART2_IRQn 0 */
HAL_UART_IRQHandler(&huart2);
/* USER CODE BEGIN USART2_IRQn 1 */
/* USER CODE END USART2_IRQn 1 */
}
void USART1_IRQHandler(void)
{
/* USER CODE BEGIN USART2_IRQn 0 */
/* USER CODE END USART2_IRQn 0 */
HAL_UART_IRQHandler(&huart1);
/* USER CODE BEGIN USART2_IRQn 1 */
/* USER CODE END USART2_IRQn 1 */
}
//----- in another file--------
void HAL_UART_MspInit(UART_HandleTypeDef* huart)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(huart->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspInit 0 */
/* USER CODE END USART1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
/**USART1 GPIO Configuration
PA9 ------> USART1_TX
PA10 ------> USART1_RX
PA11 ------> USART1_CTS
PA12 ------> USART1_RTS
*/
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USART1 DMA Init */
/* USART1_RX Init */
hdma_usart1_rx.Instance = DMA2_Stream2;
hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
__HAL_LINKDMA(huart,hdmarx,hdma_usart1_rx);
/* USART1_TX Init */
hdma_usart1_tx.Instance = DMA2_Stream7;
hdma_usart1_tx.Init.Channel = DMA_CHANNEL_4;
hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart1_tx.Init.Mode = DMA_NORMAL;
hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
__HAL_LINKDMA(huart,hdmatx,hdma_usart1_tx);
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
}
else if(huart->Instance==USART2)
{
/* USER CODE BEGIN USART2_MspInit 0 */
/* USER CODE END USART2_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_USART2_CLK_ENABLE();
/**USART2 GPIO Configuration
PD5 ------> USART2_TX
PD6 ------> USART2_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/* USART2 DMA Init */
/* USART2_RX Init */
hdma_usart2_rx.Instance = DMA1_Stream5;
hdma_usart2_rx.Init.Channel = DMA_CHANNEL_4;
hdma_usart2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_usart2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart2_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart2_rx.Init.Mode = DMA_CIRCULAR;
hdma_usart2_rx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart2_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart2_rx) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
__HAL_LINKDMA(huart,hdmarx,hdma_usart2_rx);
/* USART2_TX Init */
hdma_usart2_tx.Instance = DMA1_Stream6;
hdma_usart2_tx.Init.Channel = DMA_CHANNEL_4;
hdma_usart2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_usart2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_usart2_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_usart2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_usart2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_usart2_tx.Init.Mode = DMA_NORMAL;
hdma_usart2_tx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart2_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart2_tx) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
__HAL_LINKDMA(huart,hdmatx,hdma_usart2_tx);
HAL_NVIC_SetPriority(USART2_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(USART2_IRQn);
}
}
I am using a STM32F401RE board and I want a timer interrupt to happen every X seconds (let's say 60 seconds).
The interrupt callback works. The problem is the interrupt does not happen every 60 seconds (it does every 34 seconds). I have tried different values for prescaler and period but nothing I try is working as I want.
I am using the functions generated by CubeMX in another project:
main.c
TIM_HandleTypeDef htim10;
int main(void)
{
HAL_Init();
SystemClock_Config();
// Some other code
MX_TIM10_Init();
HAL_TIM_Base_Start_IT(&htim10);
while (1)
{
}
}
static void MX_TIM10_Init(void)
{
htim10.Instance = TIM10;
htim10.Init.Prescaler = 35999;
htim10.Init.CounterMode = TIM_COUNTERMODE_UP;
htim10.Init.Period = 60000;
htim10.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
if (HAL_TIM_Base_Init(&htim10) != HAL_OK)
{
Error_Handler();
}
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance==TIM10)
{
printf("ABCDEFG\n\r");
}
}
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 288;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 6;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
__HAL_RCC_SYSCFG_CLK_ENABLE();
}
stm32f4xx_hal_msp.c
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
{
if(htim_base->Instance==TIM10)
{
__HAL_RCC_TIM10_CLK_ENABLE();
HAL_NVIC_SetPriority(TIM1_UP_TIM10_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn);
}
}
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* htim_base)
{
if(htim_base->Instance==TIM10)
{
__HAL_RCC_TIM10_CLK_DISABLE();
HAL_NVIC_DisableIRQ(TIM1_UP_TIM10_IRQn);
}
}
stm32f4xx_it.c
void TIM1_UP_TIM10_IRQHandler(void)
{
HAL_TIM_IRQHandler(&htim10);
}
Can anyone explain me what I am doing wrong? How do I configure the timer parameters to achieve the period that I want?
Thank you in advance!
can you capture your CubeMX's Clock Configuration screen of your project, it make me diagnose your issue easier!
EDIT 1: I check your code, the Timer 10 is run by APB2 clock source so your timer 10's clock is running twice times faster. You should config your code like this:
static void MX_TIM10_Init(void)
{
htim10.Instance = TIM10;
htim10.Init.Prescaler = 35999;
htim10.Init.CounterMode = TIM_COUNTERMODE_UP;
htim10.Init.Period = 60000;
htim10.Init.ClockDivision = TIM_CLOCKDIVISION_DIV2; //TIM_CLOCKDIVISION_DIV1
if (HAL_TIM_Base_Init(&htim10) != HAL_OK)
{
Error_Handler();
}
}
Frankie
add the function below called MX_NVIC_Init(); to the main() function
static void MX_NVIC_Init(void)
{
HAL_NVIC_SetPriority(TIM1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(TIM10_IRQn);
}
I can't seem to get TIM8 PWM to work with anything that I try. I've tried all timers and they all work with my PWM driver, except TIM8. All timers are generated with CubeMx and there are no conflicts.
Here are some snipits of the code. The driver is fairly large so I cut out parts of it:
Pin config:
//Tim 8 Chan 1 IN1A
GPIO_InitStructure.Pin = GPIO_PIN_6;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
//Tim 8 Chan 2 IN1B
GPIO_InitStructure.Pin = GPIO_PIN_7;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
//Tim 8 Chan 3 IN2A
GPIO_InitStructure.Pin = GPIO_PIN_8;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
//Tim 8 Chan 4 IN2B
GPIO_InitStructure.Pin = GPIO_PIN_9;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
Timer setup:
static PWM_ERC_T Timer8_Init(PWM_HANDLE_T *pwmHandle_, uint16_t prescaler_, uint16_t period_, uint16_t pulse_)
{
PWM_ERC_T erc = PWM_ERC_NO_ERROR;
__TIM8_CLK_ENABLE();
pwmHandle_->TimerHandle.Instance = TIM8;
TIM_MasterConfigTypeDef masterConfig;
TIM_BreakDeadTimeConfigTypeDef breakDeadTimeConfig;
TIM_OC_InitTypeDef configOC;
pwmHandle_->TimerHandle.Init.Prescaler = prescaler_;
pwmHandle_->TimerHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
pwmHandle_->TimerHandle.Init.Period = period_;
pwmHandle_->TimerHandle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
pwmHandle_->TimerHandle.Init.RepetitionCounter = 0;
HAL_TIM_PWM_Init(&pwmHandle_->TimerHandle);
masterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
masterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
masterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&pwmHandle_->TimerHandle, &masterConfig);
breakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
breakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
breakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
breakDeadTimeConfig.DeadTime = 0;
breakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
breakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
breakDeadTimeConfig.BreakFilter = 0;
breakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
breakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
breakDeadTimeConfig.Break2Filter = 0;
breakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
HAL_TIMEx_ConfigBreakDeadTime(&pwmHandle_->TimerHandle, &breakDeadTimeConfig);
configOC.OCMode = TIM_OCMODE_PWM1;
configOC.Pulse = pulse_;
configOC.OCPolarity = TIM_OCPOLARITY_HIGH;
configOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
configOC.OCFastMode = TIM_OCFAST_DISABLE;
configOC.OCIdleState = TIM_OCIDLESTATE_RESET;
configOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if(pwmHandle_->Init.Channels & PWM_CHANNEL_1)
{
HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_2)
{
HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_2);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_3)
{
HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_3);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_4)
{
HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_4);
}
I assure you each of the channels are being enabled and the prescaller/period and period are being calculated correctly.
Any thoughts? This is the only timer that has issues.
Solution:
Finally figured out what was wrong.
HAL_TIM_OC_Init(&pwmHandle_->TimerHandle);
has to be added for TIM8 for some reason... not sure why and
HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
needs to be used instead of
HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
Correct Timer Setup:
static PWM_ERC_T Timer8_Init(PWM_HANDLE_T *pwmHandle_, uint16_t prescaler_, uint16_t period_, uint16_t pulse_)
{
PWM_ERC_T erc = PWM_ERC_NO_ERROR;
TIM_MasterConfigTypeDef masterConfig;
TIM_BreakDeadTimeConfigTypeDef breakDeadTimeConfig;
TIM_OC_InitTypeDef configOC;
pwmHandle_->TimerHandle.Init.Prescaler = prescaler_;
pwmHandle_->TimerHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
pwmHandle_->TimerHandle.Init.Period = period_;
pwmHandle_->TimerHandle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
pwmHandle_->TimerHandle.Init.RepetitionCounter = 0;
HAL_TIM_OC_Init(&pwmHandle_->TimerHandle);
HAL_TIM_PWM_Init(&pwmHandle_->TimerHandle);
masterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
masterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
masterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&pwmHandle_->TimerHandle, &masterConfig);
breakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
breakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
breakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
breakDeadTimeConfig.DeadTime = 0;
breakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
breakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
breakDeadTimeConfig.BreakFilter = 0;
breakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
breakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
breakDeadTimeConfig.Break2Filter = 0;
breakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
HAL_TIMEx_ConfigBreakDeadTime(&pwmHandle_->TimerHandle, &breakDeadTimeConfig);
configOC.OCMode = TIM_OCMODE_PWM1;
configOC.Pulse = pulse_;
configOC.OCPolarity = TIM_OCPOLARITY_HIGH;
configOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
configOC.OCFastMode = TIM_OCFAST_DISABLE;
configOC.OCIdleState = TIM_OCIDLESTATE_RESET;
configOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if(pwmHandle_->Init.Channels & PWM_CHANNEL_1)
{
HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_2)
{
HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_2);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_3)
{
HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_3);
}
if(pwmHandle_->Init.Channels & PWM_CHANNEL_4)
{
HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_4);
}
return erc;
}
TIM1 and TIM8 have a bit MOE (Main Output Enable) in the TIMx_BDTR register that is unique to these timers. The PWM is not output unless that bit is set to 1.
I would to like to count pulses using timer peripheral TIM in a STM32F429I-Disco board. I have initialized the TIM3 as:
TIM_SlaveConfigTypeDef sSlaveConfig;
TIM_MasterConfigTypeDef sMasterConfig;
htim3.Instance = TIM3;
htim3.Init.Prescaler = 0;
htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
htim3.Init.Period = 1000;
htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_Base_Init(&htim3);
sSlaveConfig.SlaveMode = TIM_SLAVEMODE_EXTERNAL1;
sSlaveConfig.InputTrigger = TIM_TS_TI2FP2;
sSlaveConfig.TriggerPolarity = TIM_TRIGGERPOLARITY_RISING;
sSlaveConfig.TriggerFilter = 15;
HAL_TIM_SlaveConfigSynchronization(&htim3, &sSlaveConfig);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig);
and in the MSP it's like this:
if (htim->Instance == TIM3)
{
GPIO_InitTypeDef GPIO_InitStruct;
__TIM3_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF2_TIM3;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
I understand that it's a timer set in the pin PB4 and that it's triggered by pulses in this pin.
What I would like is to count this pulses, something like this:
while(1)
{
uint8_t buffer[128];
int numberSize = snprintf((char*)buffer, 128, "%d",(int) __HAL_TIM_GetCounter(&htim3));
writeStrOnCell(buffer, numberSize, 0, 0);
HAL_Delay(500);
}
But nothing is working...I'm not getting the pulses. I connect the PB4 to PA0 that is high when I push the user button.
Thanks
Probably you forgot to configure NVIC.
Example:
HAL_NVIC_SetPriority(TIM3_IRQn, 0, 1);
HAL_NVIC_EnableIRQ(TIMx_IRQn);
Notice that in this example the timer has quite high interrupt priority.