ADC Code output Test on real time?

[Turtledove]

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

/*

 * Copyright (c) 2014 - 2016, Freescale Semiconductor, Inc.

 * Copyright (c) 2016 - 2018, NXP.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 *

 * 3. Neither the name of the copyright holder nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY NXP "AS IS" AND ANY EXPRESSED OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL NXP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */

#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_]

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.