I am having problems with capturing input from one of the GPIO pins which has a timer connected to it.
#include "fsl_iomuxc.h"
#include "clock_config.h"
#include "board.h"
#include "fsl_qtmr.h"
#include "pin_mux.h"
#define BOARD_QTMR_BASEADDR TMR3
#define BOARD_QTMR_INPUT_CAPTURE_CHANNEL kQTMR_Channel_1
/* IOMUXC configuration for Quad Timer input pin */
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_MUX 0x401F814CU
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_MODE 0x1U
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_INPUT_REG 0x401F8570U
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_INPUT_DSY 0x1U
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_REG 0x401F833CU
#define IOMUXC_QTIMER_INPUT_PIN_CONFIG_ONFIELD 0x1U
#define QTMR_CounterInputPin kQTMR_Counter1InputPin
/* Interrupt number and interrupt handler for the QTMR instance used */
#define QTMR_IRQ_ID TMR3_IRQn
#define QTMR_IRQ_HANDLER TMR3_IRQHandler
/* QTMR Clock source divider for Ipg clock source, the value of two macros below should be aligned. */
#define QTMR_PRIMARY_SOURCE (kQTMR_ClockDivide_4)
#define QTMR_CLOCK_SOURCE_DIVIDER (4U)
/* The frequency of the source clock after divided. */
#define QTMR_SOURCE_CLOCK (CLOCK_GetFreq(kCLOCK_IpgClk) / QTMR_CLOCK_SOURCE_DIVIDER)
volatile bool qtmrIsrFlag = false;
extern "C"{
void QTMR_IRQ_HANDLER(void)
{
/* Clear interrupt flag.*/
QTMR_ClearStatusFlags(BOARD_QTMR_BASEADDR, BOARD_QTMR_INPUT_CAPTURE_CHANNEL, kQTMR_EdgeFlag);
qtmrIsrFlag = true;
__DSB();
}
}
int main(void)
{
qtmr_config_t qtmrConfig;
uint32_t counterClock = 0;
uint32_t timeCapt = 0;
uint32_t count = 0;
/* Board pin, clock, debug console init */
BOARD_ConfigMPU();
BOARD_InitBootPins();
BOARD_InitBootClocks();
QTMR_GetDefaultConfig(&qtmrConfig);
/* Initial the input channel. */
qtmrConfig.primarySource = QTMR_PRIMARY_SOURCE;
QTMR_Init(BOARD_QTMR_BASEADDR, BOARD_QTMR_INPUT_CAPTURE_CHANNEL, &qtmrConfig);
/* Set up the IOMUXC configuration for Quad Timer input pin */
IOMUXC_SetPinMux(IOMUXC_QTIMER_INPUT_PIN_CONFIG_MUX,
IOMUXC_QTIMER_INPUT_PIN_CONFIG_MODE,
IOMUXC_QTIMER_INPUT_PIN_CONFIG_INPUT_REG,
IOMUXC_QTIMER_INPUT_PIN_CONFIG_INPUT_DSY,
IOMUXC_QTIMER_INPUT_PIN_CONFIG_REG,
IOMUXC_QTIMER_INPUT_PIN_CONFIG_ONFIELD);
/* Setup the input capture */
QTMR_SetupInputCapture(BOARD_QTMR_BASEADDR, BOARD_QTMR_INPUT_CAPTURE_CHANNEL, QTMR_CounterInputPin, false, true,
kQTMR_RisingEdge);
/* Enable at the NVIC */
EnableIRQ(QTMR_IRQ_ID);
/* Enable timer compare interrupt */
QTMR_EnableInterrupts(BOARD_QTMR_BASEADDR, BOARD_QTMR_INPUT_CAPTURE_CHANNEL, kQTMR_EdgeInterruptEnable);
/* Start the input channel to count on the rising edge of the primary source clock */
QTMR_StartTimer(BOARD_QTMR_BASEADDR, BOARD_QTMR_INPUT_CAPTURE_CHANNEL, kQTMR_PriSrcRiseEdge);
counterClock = QTMR_SOURCE_CLOCK / 1000U;
while (1)
{
/* Your application code here */
}
}
