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595 lines
19 KiB
C
595 lines
19 KiB
C
/* Copyright (C) 2022 Alif Semiconductor - All Rights Reserved.
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* Use, distribution and modification of this code is permitted under the
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* terms stated in the Alif Semiconductor Software License Agreement
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*
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* You should have received a copy of the Alif Semiconductor Software
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* License Agreement with this file. If not, please write to:
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* contact@alifsemi.com, or visit: https://alifsemi.com/license
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*
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*/
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/**************************************************************************//**
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* @file : ADC_Baremetal.c
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* @author : Prabhakar kumar
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* @email : prabhakar.kumar@alifsemi.com
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* @version : V1.0.0
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* @date : 22-Feb-2022
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* @brief : Baremetal demo application code for ADC driver
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* - Input in analog signal corresponding output is digital value.
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* - Converted digital value are stored in user provided memory
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* address.
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* ADC has two conversion mode
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* 1) Single shot conversion
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* - single channel scan
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* 2) Continuous conversion
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* - single channel scan
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* - Multiple channel scan
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*
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* Hardware setup:
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* - GPIO port are reserved for ADC12 instance 0 input:
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* P0_0(channel0)
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* P0_1(channel1)
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* P0_2(channel2)
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* P0_3(channel3)
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* P0_4(channel4)
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* P0_5(channel5)
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* - GPIO port are reserved for ADC12 instance 1 input:
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* P0_6(channel0)
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* P0_7(channel1)
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* P1_0(channel2)
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* P1_1(channel3)
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* P1_2(channel4)
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* P1_3(channel5)
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* - GPIO port are reserved for ADC12 instance 2 input:
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* P1_4(channel0)
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* P1_5(channel1)
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* P1_6(channel2)
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* P1_7(channel3)
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* P2_0(channel4)
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* P2_1(channel5)
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*
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* - GPIO port are reserved for ADC24 instance input:
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* P0_0 (+ve input ) and P0_4 (-ve input) channel 0
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* P0_1 (+ve input ) and P0_5 (-ve input) channel 1
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* P0_2 (+ve input ) and P0_6 (-ve input) channel 2
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* P0_3 (+ve input ) and P0_7 (-ve input) channel 2
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*
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* Single shot Scan (selective channel scan)
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* - User can select the particular channel using
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* ARM_ADC_CHANNEL_#, where # denotes the channel number.
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*
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* Continuous Scan
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* - Single shot scan
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* - User can select the particular channel using
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* ARM_ADC_CHANNEL_#, where # denotes the channel number.
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*
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* - Continuous channel scan
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* - it rotate through all the ADC channels and
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* continuously stores the value in given memory buffer.
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* User can skip channels using ARM_ADC_MASK_CHANNEL_# macro.
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*
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* Comparator
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* - comparing channels for both the scan for below threshold
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* " Above / below threshold A
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* " Above / below threshold B
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* " Between/outside threshold A and B
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*
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* ADC configurations for Demo testApp:
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* Single channel scan(Default scan)
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* - GPIO pin P1_4 are connected to Regulated DC Power supply.
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* DC Power supply:
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* - +ve connected to P1_4 (ADC2 channel 0) at 1.0V
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* - -ve connect to GND.
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*
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* Continuous Channel scan
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* - Used ADC instance 2,all channels(0-5) are connected to dc supply
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* - channel 2 and 4 are masked using MASK_CHANNEL macro.
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* - GND both dc supply channel -ve
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* Differential input
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* -ADC12
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* GPIO pin P1_4 and P1_5 are connected to Regulated DC Power supply.
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* 2 channel DC Power supply:
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* - +ve connected to P1_4 (ADC122 channel 0) at 1.0V and
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* +ve connected to P1_5 (ADC122 channel 1) at 0.4V
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* - -ve connect to GND.
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* -ADC24
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GPIO pin P1_4 and P1_5 are connected to Regulated DC Power supply.
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* 2 channel DC Power supply:
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* - +ve connected to P0_0 (ADC122 channel 0) at 1.0V and
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* +ve connected to P0_4 (ADC122 channel 1) at 0.5V
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* - -ve connect to GND.
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* @bug : None.
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* @Note : None.
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******************************************************************************/
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/* System Includes */
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#include <stdio.h>
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#include "system_utils.h"
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/* include for ADC Driver */
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#include "Driver_ADC.h"
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/* PINMUX include */
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#include "pinconf.h"
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#include "se_services_port.h"
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#include "RTE_Components.h"
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#if defined(RTE_Compiler_IO_STDOUT)
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#include "retarget_stdout.h"
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#endif /* RTE_Compiler_IO_STDOUT */
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/* single shot conversion scan use ARM_ADC_SINGLE_SHOT_CH_CONV*/
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/* continuous conversion scan use ARM_ADC_CONTINOUS_CH_CONV */
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#define ADC_CONVERSION ARM_ADC_SINGLE_SHOT_CH_CONV
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//#define ADC_CONVERSION ARM_ADC_CONTINOUS_CH_CONV
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/* For rotating through one channel use ARM_ADC_FIXED_CHANNEL_SCAN */
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/* For continuous rotating through all channel use ARM_ADC_MULTIPLE_CHANNEL_SCAN*/
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/* @note : When conversion is selected ARM_ADC_CH_SINGLE_SHOT_SCAN
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* ADC_SCAN should be in ARM_ADC_SINGLE_CH_SCAN
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* */
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#define ADC_SCAN ARM_ADC_SINGLE_CH_SCAN
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//#define ADC_SCAN ARM_ADC_MULTIPLE_CH_SCAN
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/* Macro */
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#define ADC12 1
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#define ADC24 0
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/* For ADC12 use ADC_INSTANCE ADC12 */
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/* For ADC24 use ADC_INSTANCE ADC24 */
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#define ADC_INSTANCE ADC12
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//#define ADC_INSTANCE ADC24
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#if (ADC_INSTANCE == ADC12)
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/* Instance for ADC12 */
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extern ARM_DRIVER_ADC Driver_ADC122;
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static ARM_DRIVER_ADC *ADCdrv = &Driver_ADC122;
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#else
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/* Instance for ADC24 */
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extern ARM_DRIVER_ADC Driver_ADC24;
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static ARM_DRIVER_ADC *ADCdrv = &Driver_ADC24;
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#endif
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#define COMP_A_THLD_VALUE (0X00) /* Comparator A threshold value */
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#define COMP_B_THLD_VALUE (0x00) /* Comparator B threshold value */
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#define MASK_CHANNEL (ARM_ADC_MASK_CHANNEL_2 |ARM_ADC_MASK_CHANNEL_4) /* Masking particular channels */
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#define MAX_NUM_THRESHOLD (6)
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#define NUM_CHANNELS (8)
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/* store comparator result */
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uint32_t comp_value[MAX_NUM_THRESHOLD] = {0};
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/* Demo purpose adc_sample*/
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uint32_t adc_sample[NUM_CHANNELS];
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volatile uint32_t num_samples = 0;
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/**
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* @fn static int32_t pinmux_config(void)
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* @brief ADC pinmux configuration
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* @retval execution status.
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*/
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static int32_t pinmux_config(void)
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{
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int32_t ret = 0U;
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if (ADC_INSTANCE == ADC12)
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{
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if (ADC_SCAN == ARM_ADC_SINGLE_CH_SCAN)
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{
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/* ADC122 channel 0 */
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ret = pinconf_set(PORT_1, PIN_4, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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}
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if (ADC_SCAN == ARM_ADC_MULTIPLE_CH_SCAN)
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{
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/* ADC122 channel 0 */
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ret = pinconf_set(PORT_1, PIN_4, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC122 channel 1 */
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ret = pinconf_set(PORT_1, PIN_5, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC122 channel 2 */
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ret = pinconf_set(PORT_1, PIN_6, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC122 channel 3 */
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ret = pinconf_set(PORT_1, PIN_7, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE );
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC122 channel 4 */
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ret = pinconf_set(PORT_2, PIN_0, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC122 channel 5 */
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ret = pinconf_set(PORT_2, PIN_1, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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}
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}
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if (ADC_INSTANCE == ADC24)
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{
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if (ADC_SCAN == ARM_ADC_SINGLE_CH_SCAN)
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{
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/* ADC24 channel 0 */
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ret = pinconf_set(PORT_0, PIN_0, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 0 */
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ret = pinconf_set(PORT_0, PIN_4, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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}
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if (ADC_SCAN == ARM_ADC_MULTIPLE_CH_SCAN)
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{
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/* ADC24 channel 0 */
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ret = pinconf_set(PORT_0, PIN_0, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 0 */
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ret = pinconf_set(PORT_0, PIN_4, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 1 */
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ret = pinconf_set(PORT_0, PIN_1, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 1 */
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ret = pinconf_set(PORT_0, PIN_5, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 2 */
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ret = pinconf_set(PORT_0, PIN_2, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 2 */
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ret = pinconf_set(PORT_0, PIN_6, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 1 */
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ret = pinconf_set(PORT_0, PIN_3, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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/* ADC24 channel 1 */
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ret = pinconf_set(PORT_0, PIN_7, PINMUX_ALTERNATE_FUNCTION_7,
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PADCTRL_READ_ENABLE);
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if(ret)
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{
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printf("ERROR: Failed to configure PINMUX \r\n");
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return ret;
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}
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}
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}
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return ret;
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}
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/*
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* @func : void adc_conversion_callback(uint32_t event, uint8_t channel, uint32_t sample_output)
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* @brief : adc conversion isr callback
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* @return : NONE
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*/
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static void adc_conversion_callback(uint32_t event, uint8_t channel, uint32_t sample_output)
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{
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if (event & ARM_ADC_EVENT_CONVERSION_COMPLETE)
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{
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num_samples += 1;
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/* Store the value for the respected channels */
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adc_sample[channel] = sample_output;
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}
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if (event & ARM_ADC_COMPARATOR_THRESHOLD_ABOVE_A)
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{
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comp_value[0] += 1;
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}
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if (event & ARM_ADC_COMPARATOR_THRESHOLD_ABOVE_B)
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{
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comp_value[1] += 1;
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}
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if (event & ARM_ADC_COMPARATOR_THRESHOLD_BELOW_A)
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{
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comp_value[2] += 1;
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}
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if (event & ARM_ADC_COMPARATOR_THRESHOLD_BELOW_B)
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{
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comp_value[3] += 1;
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}
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if(event & ARM_ADC_COMPARATOR_THRESHOLD_BETWEEN_A_B)
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{
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comp_value[4] += 1;
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}
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if(event & ARM_ADC_COMPARATOR_THRESHOLD_OUTSIDE_A_B)
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{
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comp_value[5] += 1;
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}
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}
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/**
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* @func : void ADC_demo()
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* @brief : ADC demo
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* - test to verify the adc.
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* - input analog signal corresponding convert into digital value
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* - converted value is the allocated user memory address.
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* @return : NONE
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*/
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void ADC_demo()
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{
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int32_t ret = 0;
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uint32_t error_code = SERVICES_REQ_SUCCESS;
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uint32_t service_error_code;
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ARM_DRIVER_VERSION version;
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/* Initialize the SE services */
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se_services_port_init();
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/* enable the HFOSC clock */
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error_code = SERVICES_clocks_enable_clock(se_services_s_handle,
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/*clock_enable_t*/ CLKEN_CLK_160M,
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/*bool enable */ true,
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&service_error_code);
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if(error_code)
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printf("SE: clk enable = %d\n", error_code);
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printf("\r\n >>> ADC demo starting up!!! <<< \r\n");
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version = ADCdrv->GetVersion();
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printf("\r\n ADC version api:%X driver:%X...\r\n",version.api, version.drv);
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/* PINMUX */
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ret = pinmux_config();
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if(ret != 0)
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{
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printf("Error in pin-mux configuration\n");
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return;
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}
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/* Initialize ADC driver */
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ret = ADCdrv->Initialize(adc_conversion_callback);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC init failed\n");
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return;
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}
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/* Power control ADC */
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ret = ADCdrv->PowerControl(ARM_POWER_FULL);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC Power up failed\n");
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goto error_uninitialize;
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}
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#if (ADC_CONVERSION == ARM_ADC_SINGLE_SHOT_CH_CONV)
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/* set conversion mode */
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ret = ADCdrv->Control(ARM_ADC_CONVERSION_MODE_CTRL, ADC_CONVERSION);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC Comparator failed\n");
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goto error_poweroff;
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}
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/* set initial channel */
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ret = ADCdrv->Control(ARM_ADC_CHANNEL_INIT_VAL, ARM_ADC_CHANNEL_0);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC channel failed\n");
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goto error_poweroff;
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}
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#endif
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#if (ADC_CONVERSION == ARM_ADC_CONTINOUS_CH_CONV)
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/* set conversion mode */
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ret = ADCdrv->Control(ARM_ADC_CONVERSION_MODE_CTRL, ADC_CONVERSION);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC setting conversion mode failed\n");
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goto error_poweroff;
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}
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if (ADC_SCAN == ARM_ADC_SINGLE_CH_SCAN)
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{
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/* set channel */
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ret = ADCdrv->Control(ARM_ADC_CHANNEL_INIT_VAL, ARM_ADC_CHANNEL_0);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC setting channel failed\n");
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goto error_poweroff;
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}
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}
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else /* Multiple channel scan */
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{
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/* set sequencer controller */
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ret = ADCdrv->Control(ARM_ADC_SEQUENCER_CTRL, ARM_ADC_MULTIPLE_CH_SCAN);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC sequencer controller failed\n");
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goto error_poweroff;
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}
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/* set channel */
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ret = ADCdrv->Control(ARM_ADC_CHANNEL_INIT_VAL, ARM_ADC_CHANNEL_0);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC setting channel failed\n");
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goto error_poweroff;
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}
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/* Masking the channel */
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ret = ADCdrv->Control(ARM_ADC_SEQUENCER_MSK_CH_CTRL, MASK_CHANNEL);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC sequencer masking channel failed\n");
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goto error_poweroff;
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}
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}
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#endif
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/* set comparator a value */
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ret = ADCdrv->Control(ARM_ADC_COMPARATOR_A, COMP_A_THLD_VALUE);
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if(ret != ARM_DRIVER_OK){
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printf("\r\n Error: ADC set Comparator A threshold failed\n");
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goto error_poweroff;
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}
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/* set comparator b value */
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ret = ADCdrv->Control(ARM_ADC_COMPARATOR_B, COMP_B_THLD_VALUE);
|
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if(ret != ARM_DRIVER_OK){
|
|
printf("\r\n Error: ADC set comparator B threshold failed\n");
|
|
goto error_poweroff;
|
|
}
|
|
|
|
/* select the threshold comparison */
|
|
ret = ADCdrv->Control(ARM_ADC_THRESHOLD_COMPARISON, ARM_ADC_ABOVE_A_AND_ABOVE_B);
|
|
if(ret != ARM_DRIVER_OK){
|
|
printf("\r\n Error: ADC Threshold comparison failed\n");
|
|
goto error_poweroff;
|
|
}
|
|
|
|
printf(">>> Allocated memory buffer Address is 0x%X <<<\n",(uint32_t)adc_sample);
|
|
/* Start ADC */
|
|
ret = ADCdrv->Start();
|
|
if(ret != ARM_DRIVER_OK){
|
|
printf("\r\n Error: ADC Start failed\n");
|
|
goto error_poweroff;
|
|
}
|
|
|
|
/* wait for timeout */
|
|
if (ADC_CONVERSION == ARM_ADC_CONTINOUS_CH_CONV)
|
|
{
|
|
while(num_samples < 1000);
|
|
}
|
|
else
|
|
{
|
|
/* single shot conversion */
|
|
while(num_samples < 1);
|
|
}
|
|
|
|
/* Stop ADC */
|
|
ret = ADCdrv->Stop();
|
|
if(ret != ARM_DRIVER_OK){
|
|
printf("\r\n Error: ADC Stop failed\n");
|
|
goto error_poweroff;
|
|
}
|
|
|
|
printf("\n >>> ADC conversion completed \n");
|
|
printf(" Converted value are stored in user allocated memory address.\n");
|
|
printf("\n ---END--- \r\n wait forever >>> \n");
|
|
while(1);
|
|
|
|
error_poweroff:
|
|
|
|
/* Power off ADC peripheral */
|
|
ret = ADCdrv->PowerControl(ARM_POWER_OFF);
|
|
if(ret != ARM_DRIVER_OK)
|
|
{
|
|
printf("\r\n Error: ADC Power OFF failed.\r\n");
|
|
}
|
|
/* disable the HFOSC clock */
|
|
error_code = SERVICES_clocks_enable_clock(se_services_s_handle,
|
|
/*clock_enable_t*/ CLKEN_CLK_160M,
|
|
/*bool enable */ false,
|
|
&service_error_code);
|
|
if(error_code)
|
|
printf("SE: clk enable = %d\n", error_code);
|
|
|
|
error_uninitialize:
|
|
|
|
/* Un-initialize ADC driver */
|
|
ret = ADCdrv->Uninitialize();
|
|
if(ret != ARM_DRIVER_OK)
|
|
{
|
|
printf("\r\n Error: ADC Uninitialize failed.\r\n");
|
|
}
|
|
|
|
printf("\r\n ADC demo exiting...\r\n");
|
|
}
|
|
|
|
/* Define main entry point. */
|
|
int main()
|
|
{
|
|
#if defined(RTE_Compiler_IO_STDOUT_User)
|
|
int32_t ret;
|
|
ret = stdout_init();
|
|
if(ret != ARM_DRIVER_OK)
|
|
{
|
|
while(1)
|
|
{
|
|
}
|
|
}
|
|
#endif
|
|
/* Enter the demo Application. */
|
|
ADC_demo();
|
|
return 0;
|
|
}
|