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Code Issues Releases Wiki Activity

brake pwm

This commit is contained in:
Rene Hopf 2016-10-11 06:49:45 +02:00
parent 54594e465b
commit 8fe94ffbe3
1 changed files with 31 additions and 6 deletions
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37
src/comps/io.comp
View File

@ -23,8 +23,35 @@ INIT(
GPIO_Init(LED_G_PORT, &GPIO_InitStructure);
//brake
GPIO_InitStructure.GPIO_Pin = BRAKE_PIN;
GPIO_Init(BRAKE_PORT, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV4;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 8400; // 168e6 / 8400 = 20kHz
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM8,ENABLE);
TIM_Cmd(TIM8, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_TIM8);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OC4Init(TIM8, &TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM8, TIM_OCPreload_Enable);
TIM_CtrlPWMOutputs(TIM8, ENABLE);
);
NRT(
@ -43,10 +70,8 @@ NRT(
else
GPIO_ResetBits(LED_G_PORT, LED_G_PIN);
if(PIN(brake) > 0)
GPIO_SetBits(BRAKE_PORT, BRAKE_PIN);
else
GPIO_ResetBits(BRAKE_PORT, BRAKE_PIN);
TIM8->CCR4 = (int)CLAMP(PIN(brake) * 8400, 0, TIM8->ARR - 1);
);
ENDCOMP;