//--------------------------------------------------
void trigger_reset(uint8_t value)
{
trigger_setPin(TRIGGER_RESET,value);
if(value) {
trigger_clockCnt = 0;
}
}
//--------------------------------------------------
void trigger_pulsePin(uint8_t index)
{
trigger_pulseTimes[index] = systick_ticks + PULSE_LENGTH;
trigger_pulseActive[index] = 1;
trigger_setPin(index,1);
}
//--------------------------------------------------
void trigger_tick()
{
int i;
for(i=0;i<NUM_PINS;i++)
{
if( (trigger_pulseActive[i]) && (systick_ticks > trigger_pulseTimes[i]) )
{
trigger_setPin(i,0);
trigger_pulseActive[i] = 0;
}
}
}
//--------------------------------------------------
void trigger_init()
{
memset(trigger_pulseTimes,0,NUM_PINS);
memset(trigger_pulseActive,0,NUM_PINS);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
//trigger output
GPIO_InitStructure.GPIO_Pin = PIN_TRACK_1 | PIN_TRACK_2| PIN_TRACK_3 | PIN_TRACK_4 | PIN_TRACK_5 | PIN_TRACK_6 | PIN_TRACK_7 | PIN_CLOCK_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PIN_CLOCK_2 | PIN_RESET;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//-------------- trigger input ---------------------------------------
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
//---- Reset In (PA8)------------------------------------------------------
GPIO_InitStructure.GPIO_Pin = PIN_RESET_IN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //maybe floating?
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Connect EXTI Line8 to PA8 pin */
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource8);
/* Configure EXTI Line8 */
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI Line8 Interrupt to the lowest priority */
/*//same irq as below
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
*/
//---- Clock In (PC9)------------------------------------------------------
GPIO_InitStructure.GPIO_Pin = PIN_CLOCK_IN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //maybe floating?
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Connect EXTI Line9 to PC9 pin */
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource9);
/* Configure EXTI Line9 */
EXTI_InitStructure.EXTI_Line = EXTI_Line9;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI Line9 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//set trigger outs to low
trigger_setPin(0,0);
trigger_setPin(1,0);
trigger_setPin(2,0);
trigger_setPin(3,0);
trigger_setPin(4,0);
trigger_setPin(5,0);
trigger_setPin(6,0);
}
