Hello NXP talents,
I'm working with SDADC and ETPU modules of MPC5777C MCU. I have created my application based on the examples: Example MPC5777C-eTPU_GPIO_test GHS714 , https://community.nxp.com/docs/DOC-330909 .
In my application, the SDADC_2 data valid event output is configured as input of ETPUB channel 10. I expect the util_etpu_gpio_pin_history() function will return 1 when the Data Valid Flag is 1, but the util_etpu_gpio_pin_history() function always return 0.
The below is my code:
void SDADC2_Init(void)
{
/* Divider 64 for SD_CLK (max 16MHz, min 4MHz) i.e.264/64 = 4.125MHz */
SIU.SDCLKCFG.R = 0x0000003F;
/* enable SDADC in the single-ended mode */
SDADC_2.MCR.R = 0x00000003;
/* INP (positive terminal) = AN[0]
INM (negative terminal) = VREFN */
SDADC_2.CSR.R = 0x0;
/* set output settling delay to max */
SDADC_2.OSDR.R = 0xFF;
/* FIFO 16 words deep, enabled */
SDADC_2.FCR.R = 0x107;
/* Enable data valid event output */
SDADC_2.RSER.R = 0x00000004;
/* send key to reset ADC to start sampling */
SDADC_2.RKR.R = 0x5AF0;
}
void main (void)
{
vint32_t counter = 0;
vint32_t error_code;
vuint32_t dataValidFlag = 0;
HW_init();
Interrupts_init();
Interrupts_enable_Core0();
/* initialize pad */
SIU.PCR[ETPUB10_pin].R = (ALT1 | IBE | WPE | WPS) ;
/* Config the SDADC_2 data valid output is input of ETPUB channel 10 */
SIU.SDETPUB.B.CH10 = 1;
/* initialize ICF filter, otherwise input does not pass to the module */
IGF_1.FILTER[27].MCR.B.FGEN = 1;
/* initialize eTPU hardware */
fs_etpu_init (my_etpu_config, (uint32_t *) etpu_code, sizeof (etpu_code),
(uint32_t *) etpu_globals, sizeof (etpu_globals));
/* initialize eTPU channels */
error_code = fs_etpu_gpio_init (GPIO10_B, FS_ETPU_PRIORITY_MIDDLE);
/* enable all timebases */
fs_timer_start ();
/* Init SDADC_2 */
SDADC2_Init();
/* waiting for data valid flag is set */
while(((dataValidFlag == 0)))
{
validDataFlag = SDADC_2.SFR.R & 0x4;
}
Delay(1000);
fs_etpu_gpio_input_immed(GPIO10_B);
pinstate = util_etpu_gpio_pin_history(GPIO10_B);
while(1);
}
May I have something wrong, could you help me to check it?
Thanks and regards,
Thanh.
