Jurica Resetar / acn_nrf52_saadc

SAADC library and drivers for nrf52832.

Dependents:   acd52832_SAADC_Differential_input_EPD acd52832_Car_battery_ch acd52832_Car_battery_ch_2

Library to use aconno drivers for Nordic Semiconductor nrf52832 SAADC.

acd_nrf52_saadc.cpp@4:616c6590bbd2, 2017-08-23 (annotated)

Committer:
Dautor
Date:
Wed Aug 23 09:22:17 2017 +0000
Revision:
4:616c6590bbd2
Parent:
3:fcada8b3b567
Child:
6:57e342aaaca7
Small changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Dautor 1:2d6e904c6843 1 #include "acd_nrf52_saadc.h"
Dautor 1:2d6e904c6843 2
Dautor 1:2d6e904c6843 3 // add and remove analog channels -> +/- maxcnt
Dautor 1:2d6e904c6843 4
Dautor 3:fcada8b3b567 5 NRF52_SAADC::NRF52_SAADC(){
Dautor 1:2d6e904c6843 6 NRF_SAADC->ENABLE = 1;
Dautor 3:fcada8b3b567 7 memset(data, 0, sizeof(data));
Dautor 3:fcada8b3b567 8 NRF_SAADC->RESULT.PTR =(uint32_t)data;
Dautor 3:fcada8b3b567 9 NRF_SAADC->RESULT.MAXCNT = 0;
Dautor 1:2d6e904c6843 10 }
Dautor 1:2d6e904c6843 11
Dautor 1:2d6e904c6843 12 NRF52_SAADC::~NRF52_SAADC(){
Dautor 2:1e7d6ab5b04b 13 NRF_SAADC->ENABLE = 0;
Dautor 1:2d6e904c6843 14 }
Dautor 1:2d6e904c6843 15
Dautor 3:fcada8b3b567 16 void NRF52_SAADC::updateData(){
Dautor 1:2d6e904c6843 17 NRF_SAADC->TASKS_START = 1;
Dautor 1:2d6e904c6843 18 while(!NRF_SAADC->EVENTS_STARTED);
Dautor 1:2d6e904c6843 19 NRF_SAADC->TASKS_SAMPLE = 1;
Dautor 4:616c6590bbd2 20 for(uint8_t i = 0; i < NRF_SAADC->RESULT.MAXCNT; ++i)
Dautor 4:616c6590bbd2 21 {
Dautor 4:616c6590bbd2 22 while(!NRF_SAADC->EVENTS_RESULTDONE);
Dautor 4:616c6590bbd2 23 while(!NRF_SAADC->EVENTS_DONE);
Dautor 4:616c6590bbd2 24 while(!NRF_SAADC->EVENTS_END);
Dautor 4:616c6590bbd2 25 while(NRF_SAADC->STATUS == 1); // while conversion is is progress
Dautor 4:616c6590bbd2 26 }
Dautor 4:616c6590bbd2 27 NRF_SAADC->TASKS_STOP = 1;
Dautor 4:616c6590bbd2 28 while(!NRF_SAADC->EVENTS_STOPPED);
Dautor 1:2d6e904c6843 29 }
Dautor 3:fcada8b3b567 30
Dautor 3:fcada8b3b567 31 bool NRF52_SAADC::addChannel(uint8_t pin){
Dautor 3:fcada8b3b567 32 if(NRF_SAADC->RESULT.MAXCNT < 8)
Dautor 3:fcada8b3b567 33 {
Dautor 3:fcada8b3b567 34 int channel = NRF_SAADC->RESULT.MAXCNT;
Dautor 3:fcada8b3b567 35 NRF_SAADC->CH[channel].PSELP = pin; // Input positive pin is VDD = 9
Dautor 3:fcada8b3b567 36 NRF_SAADC->CH[channel].CONFIG = 0x00020000; // reset
Dautor 3:fcada8b3b567 37 NRF_SAADC->RESULT.MAXCNT++;
Dautor 3:fcada8b3b567 38 return 0;
Dautor 3:fcada8b3b567 39 }
Dautor 3:fcada8b3b567 40 return 1;
Dautor 3:fcada8b3b567 41 }
Dautor 3:fcada8b3b567 42
Dautor 3:fcada8b3b567 43 void NRF52_SAADC::calibrate(){
Dautor 3:fcada8b3b567 44 NRF_SAADC->TASKS_CALIBRATEOFFSET = 1;
Dautor 3:fcada8b3b567 45 while(!NRF_SAADC->EVENTS_CALIBRATEDONE);
Dautor 3:fcada8b3b567 46 }