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@3:fcada8b3b567, 2017-08-23 (annotated)

Committer:
Dautor
Date:
Wed Aug 23 08:49:09 2017 +0000
Revision:
3:fcada8b3b567
Parent:
2:1e7d6ab5b04b
Child:
4:616c6590bbd2
Added multiple channel support

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 1:2d6e904c6843 20 while(!NRF_SAADC->EVENTS_RESULTDONE);
Dautor 1:2d6e904c6843 21 while(!NRF_SAADC->EVENTS_DONE);
Dautor 2:1e7d6ab5b04b 22 while(!NRF_SAADC->EVENTS_END);
Dautor 2:1e7d6ab5b04b 23 while(NRF_SAADC->STATUS == 1); // while conversion is is progress
Dautor 3:fcada8b3b567 24 //NRF_SAADC->TASKS_STOP = 1;
Dautor 3:fcada8b3b567 25 //while(!NRF_SAADC->EVENTS_STOPPED);
Dautor 1:2d6e904c6843 26 }
Dautor 3:fcada8b3b567 27
Dautor 3:fcada8b3b567 28 bool NRF52_SAADC::addChannel(uint8_t pin){
Dautor 3:fcada8b3b567 29 if(NRF_SAADC->RESULT.MAXCNT < 8)
Dautor 3:fcada8b3b567 30 {
Dautor 3:fcada8b3b567 31 int channel = NRF_SAADC->RESULT.MAXCNT;
Dautor 3:fcada8b3b567 32 NRF_SAADC->CH[channel].PSELP = pin; // Input positive pin is VDD = 9
Dautor 3:fcada8b3b567 33 NRF_SAADC->CH[channel].CONFIG = 0x00020000; // reset
Dautor 3:fcada8b3b567 34 NRF_SAADC->RESULT.MAXCNT++;
Dautor 3:fcada8b3b567 35 return 0;
Dautor 3:fcada8b3b567 36 }
Dautor 3:fcada8b3b567 37 return 1;
Dautor 3:fcada8b3b567 38 }
Dautor 3:fcada8b3b567 39
Dautor 3:fcada8b3b567 40 void NRF52_SAADC::calibrate(){
Dautor 3:fcada8b3b567 41 NRF_SAADC->TASKS_CALIBRATEOFFSET = 1;
Dautor 3:fcada8b3b567 42 while(!NRF_SAADC->EVENTS_CALIBRATEDONE);
Dautor 3:fcada8b3b567 43 }