/**
* @brief Configure TIM1 peripheral
* @param None
* @retval None
*/
static void TIM1_Config(void)
{
/* TIM1 configuration:
- TIM1CLK is set to 2 MHz, the TIM2 Prescaler is equal to 0 so the TIM1 counter
clock used is 2 MHz / (0+1) = 2 MHz
- Channels output frequency = TIM1CLK / (TIM1_PERIOD + 1) * (TIM1_PRESCALER + 1)
= 2 000 000 / 65536 * 1 = 30.51 Hz */
/* Time Base configuration */
TIM1_TimeBaseInit(TIM1_PRESCALER, TIM1_CounterMode_Up, TIM1_PERIOD, TIM1_REPTETION_COUNTER);
/* Channels 1, 1N, 2, 2N, 3 and 3N Configuration in PWM2 mode */
TIM1_OC1Init(TIM1_OCMode_PWM2, TIM1_OutputState_Enable, TIM1_OutputNState_Enable, CCR1_VAL,
TIM1_OCPolarity_Low, TIM1_OCNPolarity_Low, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set);
TIM1_OC2Init(TIM1_OCMode_PWM2, TIM1_OutputState_Enable, TIM1_OutputNState_Enable, CCR2_VAL,
TIM1_OCPolarity_Low, TIM1_OCNPolarity_Low, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set);
TIM1_OC3Init(TIM1_OCMode_PWM2, TIM1_OutputState_Enable, TIM1_OutputNState_Enable, CCR3_VAL,
TIM1_OCPolarity_Low, TIM1_OCNPolarity_Low, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set);
/* Automatic Output Enable, Break, dead time and lock configuration
Enable the break feature with polarity high.
Non-inverted Channels and inverted channels rising edge are delayed
by 58.5 µs = DEADTIME / TIM1CLK = 117 / 2 MHz
As the lock level is level 1, Channels Idle state, break enable and polarity
bits can no longer be written.
*/
TIM1_BDTRConfig(TIM1_OSSIState_Enable, TIM1_LockLevel_1, DEADTIME,
TIM1_BreakState_Enable, TIM1_BreakPolarity_High, TIM1_AutomaticOutput_Enable);
/* TIM1 Main Output Enable */
TIM1_CtrlPWMOutputs(ENABLE);
}
/**
* @brief Configure TIM1 to generate 6 Steps PWM signal
* @param None
* @retval None
*/
static void TIM1_Config(void)
{
/* TIM1 Peripheral Configuration */
TIM1_DeInit();
/* Time Base configuration */
TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 4095, 0);
/* Channel 1, 2 and 3 Configuration in TIMING mode */
/* TIM1_Pulse = 2047 */
TIM1_OC1Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
2047, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_SET);
/* TIM1_Pulse = 1023 */
TIM1_OC2Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE, 1023,
TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_SET);
/* TIM1_Pulse = 511 */
TIM1_OC3Init(TIM1_OCMODE_TIMING, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
511, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_SET);
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM1_BDTRConfig( TIM1_OSSISTATE_ENABLE, TIM1_LOCKLEVEL_OFF, 1, TIM1_BREAK_DISABLE,
TIM1_BREAKPOLARITY_LOW, TIM1_AUTOMATICOUTPUT_ENABLE);
TIM1_CCPreloadControl(ENABLE);
TIM1_ITConfig(TIM1_IT_COM, ENABLE);
/* TIM1 counter enable */
TIM1_Cmd(ENABLE);
}
/**
* @brief Configure TIM1 to generate 3 complementary signals, to insert a
* defined dead time value, to use the break feature and to lock the
* desired parameters
* @param None
* @retval None
*/
static void TIM1_Config(void)
{
/* TIM1 Peripheral Configuration */
TIM1_DeInit();
/* Time Base configuration */
/*
TIM1_Prescaler = 0
TIM1_CounterMode = TIM1_COUNTERMODE_UP
TIM1_Period = 65535
TIM1_RepetitionCounter = 0
*/
TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 65535,0);
/* Channel 1, 2 and 3 Configuration in PWM mode */
/*
TIM1_OCMode = TIM1_OCMODE_PWM2
TIM1_OutputState = TIM1_OUTPUTSTATE_ENABLE
TIM1_OutputNState = TIM1_OUTPUTNSTATE_ENABLE
TIM1_Pulse = CCR1_Val
TIM1_OCPolarity = TIM1_OCPOLARITY_LOW
TIM1_OCNPolarity = TIM1_OCNPOLARITY_LOW
TIM1_OCIdleState = TIM1_OCIDLESTATE_SET
TIM1_OCNIdleState = TIM1_OCIDLESTATE_RESET
*/
TIM1_OC1Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
CCR1_Val, TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_RESET);
/* TIM1_Pulse = CCR2_Val */
TIM1_OC2Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
CCR2_Val, TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_RESET);
/* TIM1_Pulse = CCR3_Val */
TIM1_OC3Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE,
CCR3_Val, TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_LOW, TIM1_OCIDLESTATE_SET,
TIM1_OCNIDLESTATE_RESET);
/* Automatic Output enable, Break, dead time and lock configuration */
/*
TIM1_OSSIState = TIM1_OSSISTATE_ENABLE
TIM1_LockLevel = TIM1_LOCKLEVEL_1
TIM1_DeadTime = 117
TIM1_Break = TIM1_BREAK_ENABLE
TIM1_BreakPolarity = TIM1_BREAKPOLARITY_HIGH
TIM1_AutomaticOutput = TIM1_AUTOMATICOUTPUT_ENABLE
*/
TIM1_BDTRConfig( TIM1_OSSISTATE_ENABLE, TIM1_LOCKLEVEL_1, 117, TIM1_BREAK_ENABLE,
TIM1_BREAKPOLARITY_HIGH, TIM1_AUTOMATICOUTPUT_ENABLE);
/* TIM1 counter enable */
TIM1_Cmd(ENABLE);
/* Main Output Enable */
TIM1_CtrlPWMOutputs(ENABLE);
}
