ADC Code output Test on real time?

Turtledove · ‎11-14-2025

I am running example s32k148 on my s32 ide for arm. Please tell me how to check its output in real time expression and where to configure pins. I am new here in coding and on board. Please guide me by mentioning steps.

ADC.c

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#include "ADC.h"

void ADC_init(void)

{

/*!

* ADC0 Clocking:

* ===================================================

*/

PCC->PCCn[PCC_ADC0_INDEX] &=~ PCC_PCCn_CGC_MASK; /* Disable clock to change PCS */

PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_PCS(1); /* PCS=1: Select SOSCDIV2 */

PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_CGC_MASK; /* Enable bus clock in ADC */

/*!

* ADC0 Initialization:

* ===================================================

*/

ADC0->SC1[0] |= ADC_SC1_ADCH_MASK; /* ADCH=1F: Module is disabled for conversions */

/* AIEN=0: Interrupts are disabled */

ADC0->CFG1 |= ADC_CFG1_ADIV_MASK

|ADC_CFG1_MODE(1); /* ADICLK=0: Input clk=ALTCLK1=SOSCDIV2 */

/* ADIV=0: Prescaler=1 */

/* MODE=1: 12-bit conversion */

ADC0->CFG2 = ADC_CFG2_SMPLTS(12); /* SMPLTS=12(default): sample time is 13 ADC clks */

ADC0->SC2 = 0x00000000; /* ADTRG=0: SW trigger */

/* ACFE,ACFGT,ACREN=0: Compare func disabled */

/* DMAEN=0: DMA disabled */

/* REFSEL=0: Voltage reference pins= VREFH, VREEFL */

ADC0->SC3 = 0x00000000; /* CAL=0: Do not start calibration sequence */

/* ADCO=0: One conversion performed */

/* AVGE,AVGS=0: HW average function disabled */

}

void ADC_init_HWTrigger(char Channel) {

PCC->PCCn[PCC_ADC0_INDEX] &=~ PCC_PCCn_CGC_MASK; /* Disable clock to change PCS */

PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_PCS(1); /* PCS=1: Select SOSCDIV2 */

PCC->PCCn[PCC_ADC0_INDEX] |= PCC_PCCn_CGC_MASK; /* Enable bus clock in ADC */

ADC0->SC1[0] |= ADC_SC1_ADCH_MASK

|ADC_SC1_AIEN_MASK; /* ADCH=1F: Module is disabled for conversions*/

/* AIEN=0: Interrupts are disabled */

ADC0->CFG1 |= ADC_CFG1_ADIV_MASK

|ADC_CFG1_MODE(1);/* ADICLK=0: Input clk=ALTCLK1=SOSCDIV2 */

/* ADIV=0: Prescaler=1 */

/* MODE=1: 12-bit conversion */

ADC0->CFG2 = 0x00000000C; /* SMPLTS=12(default): sample time is 13 ADC clks */

ADC0->SC2 = ADC_SC2_ADTRG_MASK; /* ADTRG=1: HW trigger */

/* ACFE,ACFGT,ACREN=0: Compare func disabled */

/* DMAEN=0: DMA disabled */

/* REFSEL=0: Voltage reference pins= VREFH, VREEFL */

ADC0->SC1[0] = ADC_SC1_ADCH(Channel)

|ADC_SC1_AIEN_MASK; /* ADCH=1F: Module is disabled for conversions*/

/* AIEN=0: Interrupts are disabled */

ADC0->SC3 = 0x00000000; /* CAL=0: Do not start calibration sequence */

/* ADCO=0: One conversion performed */

/* AVGE,AVGS=0: HW average function disabled */

}

void convertAdcChan(uint16_t adcChan)

{

/*!

* For SW trigger mode, SC1[0] is used

* ===================================================

*/

ADC0->SC1[0]&=~ADC_SC1_ADCH_MASK; /* Clear prior ADCH bits */

ADC0->SC1[0] = ADC_SC1_ADCH(adcChan); /* Initiate Conversion */

}

uint8_t adc_complete(void)

{

return ((ADC0->SC1[0] & ADC_SC1_COCO_MASK)>>ADC_SC1_COCO_SHIFT); /* Wait for completion */

}

uint32_t read_adc_chx(void)

{

uint16_t adc_result=0;

adc_result=ADC0->R[0]; /* For SW trigger mode, R[0] is used */

return (uint32_t) ((5000*adc_result)/0xFFF); /* Convert result to mv for 0-5V range */

}

ADC.h

#ifndef ADC_H_
#define ADC_H_
#include "device_registers.h" /* include peripheral declarations S32K144 */

void convertAdcChan(uint16_t);
void ADC_init(void);
void ADC_init_HWTrigger(char Channel);
uint8_t adc_complete(void);
uint32_t read_adc_chx(void);

#endif /* ADC_H_ */

_Leo_ · ‎11-20-2025

Thank you for your interest in our products and for contributing to our community.

Please refer to the following knowledge base post:

S32M24x/S32K1 – FTM/TRGMUX/PDB/ADC – [RTD300] -> https://community.nxp.com/t5/S32M-Knowledge-Base/S32M24x-S32K1-FTM-TRGMUX-PDB-ADC-RTD300/ta-p/222903...

We hope this resolves your issue.