/**
* @brief Configure the TIMER peripheral.
* @param None
* @retval None
*/
void TIMER_Configuration(void)
{
/* TIMER1 DMA Transfer example -------------------------------------------------
TIMER1CLK = 72MHz, Prescaler = 72
TIMER1 counter clock = SystemCoreClock/72 = 1MHz.
The objective is to configure TIMER1 channel 1 to generate PWM
signal with a frequency equal to 1KHz and a variable duty cycle(25%,50%,75%) that is
changed by the DMA after a specific number of Update DMA request.
The number of this repetitive requests is defined by the TIMER1 Repetition counter,
each 2 Update Requests, the TIMER1 Channel 1 Duty Cycle changes to the next new
value defined by the buffer .
-----------------------------------------------------------------------------*/
TIMER_BaseInitPara TIMER_TimeBaseStructure;
TIMER_OCInitPara TIMER_OCInitStructure;
/* TIMERS clock enable */
RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1|RCC_APB2PERIPH_TIMER15|RCC_APB2PERIPH_TIMER16|RCC_APB2PERIPH_TIMER17,ENABLE);
RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER2|RCC_APB1PERIPH_TIMER3|RCC_APB1PERIPH_TIMER6|RCC_APB1PERIPH_TIMER14,ENABLE);
/* TIMER1 configuration */
TIMER_DeInit(TIMER1);
TIMER_TimeBaseStructure.TIMER_Prescaler = 71;
TIMER_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_UP;
TIMER_TimeBaseStructure.TIMER_Period = 999;
TIMER_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
TIMER_TimeBaseStructure.TIMER_RepetitionCounter = 1;
TIMER_BaseInit(TIMER1,&TIMER_TimeBaseStructure);
/* CH1 Configuration in PWM mode */
TIMER_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
TIMER_OCInitStructure.TIMER_OCPolarity = TIMER_OC_POLARITY_HIGH;
TIMER_OCInitStructure.TIMER_OCNPolarity = TIMER_OCN_POLARITY_HIGH;
TIMER_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
TIMER_OCInitStructure.TIMER_OutputNState = TIMER_OUTPUTN_STATE_ENABLE;
TIMER_OCInitStructure.TIMER_OCIdleState = TIMER_OC_IDLE_STATE_SET;
TIMER_OCInitStructure.TIMER_OCNIdleState = TIMER_OCN_IDLE_STATE_RESET;
TIMER_OCInitStructure.TIMER_Pulse = buffer[0];
TIMER_OC1_Init(TIMER1, &TIMER_OCInitStructure);
TIMER_OC1_Preload(TIMER1,TIMER_OC_PRELOAD_DISABLE);
/* TIMER1 output enable */
TIMER_CtrlPWMOutputs(TIMER1,ENABLE);
/* Auto-reload preload enable */
TIMER_CARLPreloadConfig(TIMER1,ENABLE);
/* TIMER1 Update DMA Request enable */
TIMER_DMACmd( TIMER1, TIMER_DMA_UPDATE, ENABLE);
/* TIMER enable counter*/
TIMER_Enable( TIMER1, ENABLE );
}
void pwm_init(void)
{
GPIO_InitPara GPIO_InitStructure;
// timer 3 pin PB1 config ( ch4 )
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
GPIO_InitStructure.GPIO_OType = GPIO_OTYPE_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PUPD_PULLDOWN;
GPIO_Init(GPIOB,&GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB,GPIO_PINSOURCE1,GPIO_AF_1);
// GPIO pins PA8 , 9 ,10 setup ( Timer1 ch 1 , 2 , 3)
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE8,GPIO_AF_2);
GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE9,GPIO_AF_2);
GPIO_PinAFConfig(GPIOA,GPIO_PINSOURCE10,GPIO_AF_2);
TIMER_BaseInitPara TIM_TimeBaseStructure;
RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1,ENABLE);
RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER3,ENABLE);
// TIMER3 for pins A8 A9 A10
TIM_TimeBaseStructure.TIMER_Prescaler = TIMER_PRESCALER - 1; //
TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_UP;
TIM_TimeBaseStructure.TIMER_Period = PWMTOP;
TIM_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
TIMER_BaseInit(TIMER3,&TIM_TimeBaseStructure);
//Ch1 , 2 , 3
TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
TIM_OCInitStructure.TIMER_OCPolarity = OUT_POLARITY;
TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
TIM_OCInitStructure.TIMER_OCIdleState = TIMER_OC_IDLE_STATE_RESET;
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC4_Init(TIMER3, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER3,ENABLE);
TIMER_CARLPreloadConfig(TIMER3,ENABLE);
TIMER_Enable( TIMER3, ENABLE );
TIMER_BaseInit(TIMER1,&TIM_TimeBaseStructure);
TIMER_OC1_Init(TIMER1, &TIM_OCInitStructure);
TIMER_OC2_Init(TIMER1, &TIM_OCInitStructure);
TIMER_OC3_Init(TIMER1, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER1,ENABLE);
TIMER_CARLPreloadConfig(TIMER1,ENABLE);
TIMER_OC1_Preload(TIMER1,ESC_PRELOAD);
TIMER_OC2_Preload(TIMER1,ESC_PRELOAD);
TIMER_OC3_Preload(TIMER1,ESC_PRELOAD);
TIMER_OC4_Preload(TIMER3,ESC_PRELOAD);
TIMER_Enable( TIMER1, ENABLE );
}
void pwm_init(void)
{
GPIO_InitPara GPIO_InitStructure;
//pin A0 TM2_ch1
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;
GPIO_InitStructure.GPIO_OType = GPIO_OTYPE_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PUPD_PULLDOWN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE1, GPIO_AF_2);
TIMER_BaseInitPara TIM_TimeBaseStructure;
RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_TIMER2 |
RCC_APB1PERIPH_TIMER14 |
RCC_APB1PERIPH_TIMER3, ENABLE);
RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_TIMER1, ENABLE);
// timer 2
TIM_TimeBaseStructure.TIMER_Prescaler = TIMER_PRESCALER - 1; //
TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_CENTER_ALIGNED2;
TIM_TimeBaseStructure.TIMER_Period = PWMTOP;
TIM_TimeBaseStructure.TIMER_ClockDivision = TIMER_CDIV_DIV1;
// init timer 2
TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
TIM_OCInitStructure.TIMER_OCPolarity = TIMER_OC_POLARITY_HIGH;
TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
TIM_OCInitStructure.TIMER_OCIdleState = TIMER_OC_IDLE_STATE_RESET;
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER2, ENABLE);
TIMER_CARLPreloadConfig(TIMER2, ENABLE);
TIMER_OC2_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);
// pin A3
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_3;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE3, GPIO_AF_2);
TIMER_OC4_Init(TIMER2, &TIM_OCInitStructure);
TIMER_OC4_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);
// TIMER_Enable( TIMER2, ENABLE );
// timer 1 ch3 , ch1
// pins A10 , A8
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_10 | GPIO_PIN_8;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE10, GPIO_AF_2);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE8, GPIO_AF_2);
// timer 1
// init timer 1
TIMER_BaseInit(TIMER1, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC3_Init(TIMER1, &TIM_OCInitStructure);
TIMER_OC1_Init(TIMER1, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER1, ENABLE);
TIMER_CARLPreloadConfig(TIMER1, ENABLE);
TIMER_OC3_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);
TIMER_OC1_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);
// bridge dir 2
///////////////
//pin A9 TM1_ch2
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_9;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE9, GPIO_AF_2);
// timer 1
// init timer 1
TIMER_BaseInit(TIMER1, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER1, ENABLE);
TIMER_CARLPreloadConfig(TIMER1, ENABLE);
TIMER_OC2_Preload(TIMER1, TIMER_OC_PRELOAD_DISABLE);
// timer 3 PB1 af1 ch4
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_1;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB, GPIO_PINSOURCE1, GPIO_AF_1);
// timer 3
// init timer 3
TIMER_BaseInit(TIMER3, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC4_Init(TIMER3, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER3, ENABLE);
TIMER_CARLPreloadConfig(TIMER3, ENABLE);
TIMER_OC4_Preload(TIMER3, TIMER_OC_PRELOAD_DISABLE);
// A0
// Timer2 ch1
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_0;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE0, GPIO_AF_2);
// timer 2
// init timer 2
TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIMER_Pulse = 0;
TIMER_OC1_Init(TIMER2, &TIM_OCInitStructure);
TIMER_CtrlPWMOutputs(TIMER2, ENABLE);
TIMER_CARLPreloadConfig(TIMER2, ENABLE);
TIMER_OC1_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);
// PA2 tm2 ch3
GPIO_InitStructure.GPIO_Pin = GPIO_PIN_2;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PINSOURCE2, GPIO_AF_2);
TIMER_OC3_Init(TIMER2, &TIM_OCInitStructure);
TIMER_OC3_Preload(TIMER2, TIMER_OC_PRELOAD_DISABLE);
TIMER_Enable(TIMER3, ENABLE);
TIMER_Enable(TIMER1, ENABLE);
TIMER_Enable(TIMER2, ENABLE);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* Configure System clocks -----------------------------------------------*/
RCC_Configuration();
/* Configure NVIC --------------------------------------------------------*/
NVIC_Configuration();
/* Configure GPIO ports --------------------------------------------------*/
GPIO_Configuration();
/* Configure TIM2 --------------------------------------------------------*/
/* Configure Time Base */
TIMER_BaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIMER_Period = 256;
TIM_TimeBaseStructure.TIMER_Prescaler = 6;
TIM_TimeBaseStructure.TIMER_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIMER_CounterMode = TIMER_COUNTER_UP;
TIMER_BaseInit(TIMER2, &TIM_TimeBaseStructure);
/* Configure TIM2 channel2 in PWM mode */
TIM_OCInitStructure.TIMER_OCMode = TIMER_OC_MODE_PWM1;
TIM_OCInitStructure.TIMER_OutputState = TIMER_OUTPUT_STATE_ENABLE;
TIM_OCInitStructure.TIMER_Pulse = 128;
TIM_OCInitStructure.TIMER_OCPolarity = TIMER_OC_POLARITY_LOW;
TIMER_OC2_Init(TIMER2, &TIM_OCInitStructure);
/* Configure DMA1 Channel1 -----------------------------------------------*/
DMA_DeInit(DMA1_CHANNEL1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC_RDTR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALSRC;
DMA_InitStructure.DMA_BufferSize = 64;
DMA_InitStructure.DMA_PeripheralInc = DMA_PERIPHERALINC_DISABLE;
DMA_InitStructure.DMA_MemoryInc = DMA_MEMORYINC_ENABLE;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PERIPHERALDATASIZE_HALFWORD;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MEMORYDATASIZE_HALFWORD;
DMA_InitStructure.DMA_Mode = DMA_MODE_NORMAL;
DMA_InitStructure.DMA_Priority = DMA_PRIORITY_HIGH;
DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;
DMA_Init(DMA1_CHANNEL1, &DMA_InitStructure);
/* Enable DMA1 channel1 */
DMA_Enable(DMA1_CHANNEL1, ENABLE);
/* Configure ADC ---------------------------------------------------------*/
ADC_InitStructure.ADC_Mode_Scan = ENABLE;
ADC_InitStructure.ADC_Mode_Continuous = DISABLE;
ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_T2_CC2;
ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;
ADC_InitStructure.ADC_Channel_Number = 1;
ADC_Init(&ADC_InitStructure);
/* Configure ADC regular channel14 */
ADC_RegularChannel_Config(ADC_CHANNEL_14, 1, ADC_SAMPLETIME_55POINT5);
/* Set inserted sequencer length */
ADC_InsertedSequencerLength_Config(1);
/* Configure ADC inserted channel */
ADC_InsertedChannel_Config(ADC_CHANNEL_11, 1, ADC_SAMPLETIME_55POINT5);
/* Configure ADC inserted external trigger */
ADC_ExternalTrigInsertedConv_Config(ADC_EXTERNAL_TRIG_INSERTCONV_NONE);
/* Enable automatic inserted conversion start after regular one */
ADC_AutoInsertedConv_Enable(ENABLE);
/* Enable ADC DMA */
ADC_DMA_Enable(ENABLE);
/* Enable ADC external trigger */
ADC_ExternalTrigConv_Enable( ENABLE);
/* Enable EOIC interrupt */
ADC_INTConfig(ADC_INT_EOIC, ENABLE);
/* Enable ADC */
ADC_Enable(ENABLE);
ADC_Calibration();
/* TIM2 counter enable */
TIMER_Enable(TIMER2, ENABLE);
/* TIM2 main Output enable */
TIMER_CtrlPWMOutputs(TIMER2, ENABLE);
/* Test on channel1 transfer complete flag */
while(!DMA_GetBitState(DMA1_FLAG_TC1));
/* Clear channel1 transfer complete flag */
DMA_ClearBitState(DMA1_FLAG_TC1);
/* TIM2 counter disable */
TIMER_Enable(TIMER2, DISABLE);
/* Turn on the Led1 */
GD_EVAL_LEDOn(LED1);
while (1)
{
}
}
