void init_sbus_on_heartbeat_capture()
{
EXTERNAL_MODULE_ON();
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_PinAFConfig(GPIOC, HEARTBEAT_GPIO_PinSource, HEARTBEAT_GPIO_AF);
GPIO_InitStructure.GPIO_Pin = HEARTBEAT_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 100000;
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_Even;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx;
USART_Init(HEARTBEAT_USART, &USART_InitStructure);
USART_Cmd(HEARTBEAT_USART, ENABLE);
USART_ITConfig(HEARTBEAT_USART, USART_IT_RXNE, ENABLE);
NVIC_SetPriority(HEARTBEAT_USART_IRQn, 6);
NVIC_EnableIRQ(HEARTBEAT_USART_IRQn);
}
// PPM output
// Timer 1, channel 1 on PA8 for prototype
// Pin is AF1 function for timer 1
static void extmodulePpmStart()
{
EXTERNAL_MODULE_ON();
// Timer1
configure_pins(EXTMODULE_GPIO_PIN, PIN_PERIPHERAL | PIN_PORTA | PIN_PER_3 | PIN_OS25);
EXTMODULE_TIMER->CR1 &= ~TIM_CR1_CEN ;
// setupPulsesPPM() is also configuring registers,
// so it has to be called after the peripheral is enabled
setupPulsesPPM(EXTERNAL_MODULE) ;
EXTMODULE_TIMER->ARR = *modulePulsesData[EXTERNAL_MODULE].ppm.ptr++ ;
EXTMODULE_TIMER->PSC = (PERI2_FREQUENCY * TIMER_MULT_APB2) / 2000000 - 1 ; // 0.5uS from 30MHz
EXTMODULE_TIMER->CCMR1 = TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1M_2 | TIM_CCMR1_OC2PE ; // PWM mode 1
EXTMODULE_TIMER->BDTR = TIM_BDTR_MOE ;
EXTMODULE_TIMER->EGR = 1 ;
EXTMODULE_TIMER->DIER = TIM_DIER_UDE ;
EXTMODULE_TIMER->SR &= ~TIM_SR_UIF ; // Clear flag
EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF ; // Clear flag
EXTMODULE_TIMER->DIER |= TIM_DIER_CC2IE ;
EXTMODULE_TIMER->DIER |= TIM_DIER_UIE ;
EXTMODULE_TIMER->CR1 = TIM_CR1_CEN ;
NVIC_EnableIRQ(EXTMODULE_TIMER_IRQn) ;
NVIC_SetPriority(EXTMODULE_TIMER_IRQn, 7);
NVIC_EnableIRQ(TIM8_UP_TIM13_IRQn) ;
NVIC_SetPriority(TIM8_UP_TIM13_IRQn, 7);
}
void extmodulePxxStart()
{
EXTERNAL_MODULE_ON();
// Timer8
setupPulsesPXX(EXTERNAL_MODULE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_PinAFConfig(EXTMODULE_GPIO, EXTMODULE_GPIO_PinSource, EXTMODULE_GPIO_AF);
GPIO_InitStructure.GPIO_Pin = EXTMODULE_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(EXTMODULE_GPIO, &GPIO_InitStructure);
EXTMODULE_TIMER->CR1 &= ~TIM_CR1_CEN ;
EXTMODULE_TIMER->ARR = 18000 ; // 9mS
EXTMODULE_TIMER->CCR2 = 15000 ; // Update time
EXTMODULE_TIMER->PSC = (PERI2_FREQUENCY * TIMER_MULT_APB2) / 2000000 - 1 ; // 0.5uS from 30MHz
EXTMODULE_TIMER->CCER = TIM_CCER_CC1NE ;
EXTMODULE_TIMER->CR2 = TIM_CR2_OIS1 ; // O/P idle high
EXTMODULE_TIMER->BDTR = TIM_BDTR_MOE ; // Enable outputs
EXTMODULE_TIMER->CCR1 = modulePulsesData[EXTERNAL_MODULE].pxx.pulses[0];
EXTMODULE_TIMER->CCMR1 = TIM_CCMR1_OC1M_2 | TIM_CCMR1_OC1M_0 ; // Force O/P high
EXTMODULE_TIMER->EGR = 1 ; // Restart
EXTMODULE_TIMER->DIER |= TIM_DIER_CC1DE ; // Enable DMA on CC1 match
EXTMODULE_TIMER->DCR = 13 ; // DMA to CC1
// Enable the DMA channel here, DMA2 stream 2, channel 7
DMA2_Stream2->CR &= ~DMA_SxCR_EN ; // Disable DMA
DMA2->LIFCR = DMA_LIFCR_CTCIF2 | DMA_LIFCR_CHTIF2 | DMA_LIFCR_CTEIF2 | DMA_LIFCR_CDMEIF2 | DMA_LIFCR_CFEIF2 ; // Write ones to clear bits
DMA2_Stream2->CR = DMA_SxCR_CHSEL_0 | DMA_SxCR_CHSEL_1 | DMA_SxCR_CHSEL_2 | DMA_SxCR_PL_0 | DMA_SxCR_MSIZE_0
| DMA_SxCR_PSIZE_0 | DMA_SxCR_MINC | DMA_SxCR_DIR_0 | DMA_SxCR_PFCTRL ;
DMA2_Stream2->PAR = CONVERT_PTR_UINT(&EXTMODULE_TIMER->DMAR);
DMA2_Stream2->M0AR = CONVERT_PTR_UINT(&modulePulsesData[EXTERNAL_MODULE].pxx.pulses[1]);
// DMA2_Stream2->FCR = 0x05 ; //DMA_SxFCR_DMDIS | DMA_SxFCR_FTH_0 ;
// DMA2_Stream2->NDTR = 100 ;
DMA2_Stream2->CR |= DMA_SxCR_EN ; // Enable DMA
EXTMODULE_TIMER->CCMR1 = TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1M_0 ; // Toggle CC1 o/p
EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF ; // Clear flag
EXTMODULE_TIMER->DIER |= TIM_DIER_CC2IE ; // Enable this interrupt
EXTMODULE_TIMER->CR1 |= TIM_CR1_CEN ;
NVIC_EnableIRQ(EXTMODULE_TIMER_IRQn) ;
NVIC_SetPriority(EXTMODULE_TIMER_IRQn, 7);
}
void init_cppm_on_heartbeat_capture(void)
{
EXTERNAL_MODULE_ON();
configure_pins(HEARTBEAT_GPIO_PIN, PIN_PERIPHERAL | PIN_PORTC | PIN_PER_2);
TRAINER_TIMER->ARR = 0xFFFF ;
TRAINER_TIMER->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 2000000 - 1 ; // 0.5uS
TRAINER_TIMER->CR2 = 0 ;
TRAINER_TIMER->CCMR1 = TIM_CCMR1_IC2F_0 | TIM_CCMR1_IC2F_1 | TIM_CCMR1_CC2S_0 ;
TRAINER_TIMER->CCER = TIM_CCER_CC2E ;
TRAINER_TIMER->SR &= ~TIM_SR_CC2IF ; // Clear flag
TRAINER_TIMER->DIER |= TIM_DIER_CC2IE ;
TRAINER_TIMER->CR1 = TIM_CR1_CEN ;
NVIC_SetPriority(TRAINER_TIMER_IRQn, 7);
NVIC_EnableIRQ(TRAINER_TIMER_IRQn) ;
}
