Hi :
I am working on quadrature decoder on FTM with TWR-K64F120M by using KDS3.0 and KSDK1.2. I have encoder connected to PTB0 and PTB1 and declare as
FTM1_QD_PHA and FTM1_QD_PHB, and able to see the signal on the scope. However, I am not able to initialize the FTM1 properly. The initialization always get stuck at FTM_HAL_SetSyncMode() in FTM_DRV_Init(). Please let me know if you have any idea or recommendation for me to clear the problem. Thanks!
main.c
//----------------------------------------------------------------------- // Standard C/C++ Includes //----------------------------------------------------------------------- #include <stdio.h> //----------------------------------------------------------------------- // KSDK Includes //----------------------------------------------------------------------- #include "main.h" //----------------------------------------------------------------------- // Application Includes //----------------------------------------------------------------------- //----------------------------------------------------------------------- // Constants //----------------------------------------------------------------------- #define ENCX_OVERFLOW 4000 //1000 CPR(cycle/rev) #define ENCY_OVERFLOW 4000 //1000 CPR(cycle/rev) const gpio_input_pin_user_config_t encoderPins[] = { { .pinName = kFTM1B0, .config.isPullEnable = false, .config.pullSelect = kPortPullUp, .config.isPassiveFilterEnabled = false, .config.isDigitalFilterEnabled = false, .config.interrupt = kPortIntDisabled }, { .pinName = kFTM1B1, .config.isPullEnable = false, .config.pullSelect = kPortPullUp, .config.isPassiveFilterEnabled = false, .config.isDigitalFilterEnabled = false, .config.interrupt = kPortIntDisabled }, { .pinName = kFTM2B18, .config.isPullEnable = false, .config.pullSelect = kPortPullUp, .config.isPassiveFilterEnabled = false, .config.isDigitalFilterEnabled = false, .config.interrupt = kPortIntDisabled }, { .pinName = kFTM2B19, .config.isPullEnable = false, .config.pullSelect = kPortPullUp, .config.isPassiveFilterEnabled = false, .config.isDigitalFilterEnabled = false, .config.interrupt = kPortIntDisabled }, { .pinName = GPIO_PINS_OUT_OF_RANGE, } }; //----------------------------------------------------------------------- // Typedefs //----------------------------------------------------------------------- //----------------------------------------------------------------------- // Global Variables //----------------------------------------------------------------------- //----------------------------------------------------------------------- // Macros //----------------------------------------------------------------------- //----------------------------------------------------------------------- // Function Prototypes //----------------------------------------------------------------------- void encoderX_Init(void); void configure_ftm1_pins(void); //----------------------------------------------------------------------- // Main Function //----------------------------------------------------------------------- int main(void) { // Configure board specific pin muxing hardware_init(); // Initialize UART terminal dbg_uart_init(); encoderX_Init(); PRINTF("\r\nRunning the TwoLED_ProjGen project.\n"); for (;;) // Forever loop { __asm("NOP"); } } void encoderX_Init(void) { FTM_Type *ftmBase; // Configure FTM1,2 encoder pins ftmBase = g_ftmBase[FTM2_IDX]; configure_ftm1_pins(); GPIO_DRV_Init(encoderPins, NULL); //FTM_DRV_QuadDecodeStop(FTM2_IDX); //OSA_InstallIntHandler(FTM1_IRQn, FlexTimer1_IRQHandler); ftm_user_config_t flexTimer1_InitConfig0 = { .tofFrequency = 0U, .isWriteProtection = false, // Disable write protection .BDMMode = kFtmBdmMode_11, .syncMethod = 0U }; FTM_DRV_Init(FTM2_IDX,&flexTimer1_InitConfig0); FTM_HAL_SetMod(ftmBase, ENCX_OVERFLOW); FTM_HAL_SetCounterInitVal(ftmBase, 0); FTM_DRV_SetClock(FTM2_IDX, kClock_source_FTM_ExternalClk, kFtmDividedBy1); //start the timer clock, source is the the phase A and B input signals ftm_phase_params_t flexTimer1_QdConfig0 = { .kFtmPhaseInputFilter = false, .kFtmPhaseFilterVal = 0U, .kFtmPhasePolarity = kFtmQuadPhaseNormal, }; FTM_DRV_QuadDecodeStart(FTM2_IDX, &flexTimer1_QdConfig0, &flexTimer1_QdConfig0, kFtmQuadPhaseEncode); FTM_HAL_ClearTimerOverflow(ftmBase); FTM_DRV_SetTimeOverflowIntCmd(FTM2_IDX,true); } void configure_ftm1_pins(void) { PORT_HAL_SetMuxMode(PORTB,0UL,kPortMuxAlt6); PORT_HAL_SetPullMode(PORTB,0UL,kPortPullUp); PORT_HAL_SetPullCmd(PORTB,0UL,false); PORT_HAL_SetMuxMode(PORTB,1UL,kPortMuxAlt6); PORT_HAL_SetPullMode(PORTB,1UL,kPortPullUp); PORT_HAL_SetPullCmd(PORTB,1UL,false); }
gpio_pin.h
enum _gpio_pins_pinNames{ kGpioSW1 = GPIO_MAKE_PIN(GPIOC_IDX, 6U), kGpioSW3 = GPIO_MAKE_PIN(GPIOA_IDX, 4U), kGpioSdhc0Cd = GPIO_MAKE_PIN(GPIOB_IDX, 20U), kGpioLED1 = GPIO_MAKE_PIN(GPIOE_IDX, 6U), kGpioLED2 = GPIO_MAKE_PIN(GPIOE_IDX, 7U), kGpioLED3 = GPIO_MAKE_PIN(GPIOE_IDX, 8U), kGpioLED4 = GPIO_MAKE_PIN(GPIOE_IDX, 9U), kGpioSdcardCardDetection = GPIO_MAKE_PIN(PORTD_IDX, 15U), /* Connects the TWR_MEM, this's SPI Card detector pin */ kFTM1B0 = GPIO_MAKE_PIN(GPIOB_IDX, 0U), //FTM1_QD_PHA kFTM1B1 = GPIO_MAKE_PIN(GPIOB_IDX, 1U), //FTM1_QD_PHB kFTM2B18 = GPIO_MAKE_PIN(GPIOB_IDX, 18U), //FTM2_QD_PHA kFTM2B19 = GPIO_MAKE_PIN(GPIOB_IDX, 19U), //FTM2_QD_PHA };
Peter Shih
1 Solution
