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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Email Notes
* 2022-04-16 Kevin.Liu [email protected] First Release
*/
#include <rtthread.h>
#include <atmel_start.h>
#include "adc_demo.h"
#ifdef SAM_ADC_EXAMPLE
#if defined(SOC_SAMC21) || defined(SOC_SAML10)
#define ADC_RESOLUTION_12BIT ADC_CTRLC_RESSEL_12BIT_Val
#define ADC_RESOLUTION_16BIT ADC_CTRLC_RESSEL_16BIT_Val
#elif defined(SOC_SAME54)
#define ADC_RESOLUTION_12BIT ADC_CTRLB_RESSEL_12BIT_Val
#define ADC_RESOLUTION_16BIT ADC_CTRLB_RESSEL_16BIT_Val
#elif defined(SOC_SAME70)
#define ADC_RESOLUTION_12BIT AFEC_EMR_RES_NO_AVERAGE_Val
#define ADC_RESOLUTION_16BIT AFEC_EMR_RES_OSR256_Val
#else
#error "ADC undefined SOC Platform"
#endif
/**
* @brief Call this function will run ADC test code.
*
* @note Test code will try to read ADC conversion result.
*
* @param None.
*
* @return RT_OK or -RT_ERROR.
*/
rt_err_t adc_demo_run(void)
{
rt_uint8_t buffer[2];
/* enable ADC driver module */
adc_sync_enable_channel(&ADC_0, 0);
adc_sync_read_channel(&ADC_0, 0, buffer, 2);
#ifndef RT_USING_FINSH
rt_kprintf("buf[0]=0x%02X buf[1]=0x%02X\r\n", buffer[0], buffer[1]);
#endif
/* ADC 16-bit resolution */
adc_sync_disable_channel(&ADC_0, 0);
adc_sync_set_resolution(&ADC_0, ADC_RESOLUTION_16BIT);
adc_sync_enable_channel(&ADC_0, 0);
#ifndef RT_USING_FINSH
rt_kprintf("buf[0]=0x%02X buf[1]=0x%02X\r\n", buffer[0], buffer[1]);
#endif
/* ADC 12-bit resolution */
adc_sync_disable_channel(&ADC_0, 0);
adc_sync_set_resolution(&ADC_0, ADC_RESOLUTION_12BIT);
adc_sync_enable_channel(&ADC_0, 0);
#ifndef RT_USING_FINSH
rt_kprintf("buf[0]=0x%02X buf[1]=0x%02X\r\n", buffer[0], buffer[1]);
#endif
return RT_EOK;
}
#endif
/*@}*/
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