Diff: acd_nrf52_saadc.cpp

Revision:

14:9a54b1b65bc8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/acd_nrf52_saadc.cpp	Sun Dec 16 21:34:52 2018 +0000
@@ -0,0 +1,46 @@
+#include "acd_nrf52_saadc.h"
+
+// add and remove analog channels -> +/- maxcnt
+
+NRF52_SAADC::NRF52_SAADC(){
+    NRF_SAADC->ENABLE = 1;
+    memset(data, 0, sizeof(data));
+    NRF_SAADC->RESULT.PTR =(uint32_t)data;
+    NRF_SAADC->RESULT.MAXCNT = 0;
+}
+
+NRF52_SAADC::~NRF52_SAADC(){
+    NRF_SAADC->ENABLE = 0;
+}
+
+void NRF52_SAADC::updateData(){
+    NRF_SAADC->TASKS_START = 1;
+    while(!NRF_SAADC->EVENTS_STARTED);
+    NRF_SAADC->TASKS_SAMPLE = 1;
+    for(uint8_t i = 0; i < NRF_SAADC->RESULT.MAXCNT; ++i)
+    {
+        while(!NRF_SAADC->EVENTS_RESULTDONE);
+        while(!NRF_SAADC->EVENTS_DONE);
+        while(!NRF_SAADC->EVENTS_END);
+        while(NRF_SAADC->STATUS == 1); // while conversion is is progress
+    }
+    NRF_SAADC->TASKS_STOP = 1;
+    while(!NRF_SAADC->EVENTS_STOPPED);
+}
+
+bool NRF52_SAADC::addChannel(uint8_t pin){
+    if(NRF_SAADC->RESULT.MAXCNT < 8)
+    {
+        int channel = NRF_SAADC->RESULT.MAXCNT;
+        NRF_SAADC->CH[channel].PSELP = pin;     // Input positive pin is VDD = 9
+        NRF_SAADC->CH[channel].CONFIG = 0x00020000; // reset
+        NRF_SAADC->RESULT.MAXCNT++;
+        return 0;
+    }
+    return 1;
+}
+
+void NRF52_SAADC::calibrate(){
+    NRF_SAADC->TASKS_CALIBRATEOFFSET = 1;
+    while(!NRF_SAADC->EVENTS_CALIBRATEDONE);
+}
\ No newline at end of file