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Location: therm-ng/src/pwmout.c
7fc667dd7f38
2.7 KiB
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Decent working pid
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// PWM Out: generate PWM waveform to control factory
//
#include "stm32f3xx_hal.h"
#include "pwmout.h"
#include "gpio.h"
#include "flash.h"
#include "error.h"
TIM_HandleTypeDef htim17;
static uint32_t last_ssr_on = 0;
void pwmout_init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_TIM17_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
// Configure LED GPIO pins
GPIO_InitStruct.Pin = SSR_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; //GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
// GPIO_InitStruct.Alternate = GPIO_AF1_TIM17;
HAL_GPIO_Init(SSR_GPIO_Port, &GPIO_InitStruct);
TIM_OC_InitTypeDef sConfigOC;
TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;
htim17.Instance = TIM17;
htim17.Init.Prescaler = 6000;
htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
htim17.Init.Period = 1000;
htim17.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim17.Init.RepetitionCounter = 0;
if (HAL_TIM_Base_Init(&htim17) != HAL_OK)
{
error_assert(ERR_PERIPHINIT);
}
if (HAL_TIM_OC_Init(&htim17) != HAL_OK)
{
error_assert(ERR_PERIPHINIT);
}
sConfigOC.OCMode = TIM_OCMODE_TOGGLE; //TIM_OCMODE_PWM1;
sConfigOC.Pulse = 200;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_LOW;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCIDLESTATE_SET;
if (HAL_TIM_OC_ConfigChannel(&htim17, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
error_assert(ERR_PERIPHINIT);
}
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.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
if (HAL_TIMEx_ConfigBreakDeadTime(&htim17, &sBreakDeadTimeConfig) != HAL_OK)
{
error_assert(ERR_PERIPHINIT);
}
HAL_NVIC_SetPriority(TIM1_TRG_COM_TIM17_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(TIM1_TRG_COM_TIM17_IRQn);
HAL_TIM_OC_Start_IT(&htim17, TIM_CHANNEL_1);
__HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE);
}
// freaking integral term isn't compatible with both heating and cooling... due to the discard
// functionality. this is a problem.
// also duty cycling isn't working correctly...
void pwmout_process(int16_t duty)
{
if(duty == 0)
{
HAL_GPIO_WritePin(SSR, 0);
HAL_GPIO_WritePin(LED, 0);
}
if(duty < 0)
duty = 0;
htim17.Instance->CCR1 = duty; //duty;
}
TIM_HandleTypeDef* pwmout_get_tim(void)
{
return &htim17;
}
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