Jurica Resetar / Mbed OS acd52832_SAADC_Differential_input_2

SAADC differential input setup. With EPD display.

Dependencies:   GDEP015OC1 acn_nrf52_saadc_2 adc52832_common

Fork of acd52832_SAADC_Differential_input_EPD by Jurica Resetar

main.cpp@6:b91bbaa15379, 2017-10-04 (annotated)

Committer:
jurica238814
Date:
Wed Oct 04 08:18:41 2017 +0000
Revision:
6:b91bbaa15379
Parent:
5:35f9fea8fe5b 
Dummy commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jurica238814 0:04520242cfef 1 /*
jurica238814 0:04520242cfef 2 * Example to demonstrate usage of the nrf52's SAADC in differential working\
jurica238814 0:04520242cfef 3 * mode.
jurica238814 0:04520242cfef 4 *
jurica238814 0:04520242cfef 5 * Made by Jurica Resetar @ aconno
jurica238814 0:04520242cfef 6 * jurica_resetar@yahoo.com
jurica238814 0:04520242cfef 7 * More info @ aconno.de
jurica238814 0:04520242cfef 8 *
jurica238814 0:04520242cfef 9 * All rights reserved
jurica238814 0:04520242cfef 10 *
jurica238814 0:04520242cfef 11 */
jurica238814 5:35f9fea8fe5b 12
jurica238814 0:04520242cfef 13 #include "mbed.h"
jurica238814 0:04520242cfef 14 #include "acd_nrf52_saadc.h"
jurica238814 2:49dab8d9637a 15 #include "GDEP015OC1.h"
jurica238814 1:41e296b93414 16
jurica238814 4:7dd2d8cc90ed 17 #define ANALOG_PIN_P (4)
jurica238814 4:7dd2d8cc90ed 18 #define ANALOG_PIN_N (5)
jurica238814 4:7dd2d8cc90ed 19 #define NUM_OF_DIFF_ADCs (4)
jurica238814 0:04520242cfef 20
jurica238814 2:49dab8d9637a 21 SPI spi(p3, NC, p4);
jurica238814 2:49dab8d9637a 22 GDEP015OC1 epd = GDEP015OC1(spi, p5, p6, p7, p8);
jurica238814 0:04520242cfef 23
jurica238814 0:04520242cfef 24 int main(void){
jurica238814 4:7dd2d8cc90ed 25 NRF52_SAADC *diffADCs[NUM_OF_DIFF_ADCs];
jurica238814 4:7dd2d8cc90ed 26 /* Declare your ADCs here */
jurica238814 4:7dd2d8cc90ed 27 /* Change NUM_OF_DIFF_ADCs in the header */
jurica238814 4:7dd2d8cc90ed 28 diffADCs[0] = new NRF52_SAADC(ANALOG_PIN_P, ANALOG_PIN_N);
jurica238814 4:7dd2d8cc90ed 29 diffADCs[1] = new NRF52_SAADC(ANALOG_PIN_N, ANALOG_PIN_P);
jurica238814 2:49dab8d9637a 30
jurica238814 4:7dd2d8cc90ed 31 uint8_t i;
jurica238814 4:7dd2d8cc90ed 32 float voltage[NUM_OF_DIFF_ADCs];
jurica238814 2:49dab8d9637a 33 char buffer[256];
jurica238814 1:41e296b93414 34
jurica238814 2:49dab8d9637a 35 sprintf(buffer, "Differential ADC inputs:");
jurica238814 2:49dab8d9637a 36 epd.writeString(buffer, 30, 30, 0);
jurica238814 2:49dab8d9637a 37 epd.writeFull();
jurica238814 2:49dab8d9637a 38
jurica238814 4:7dd2d8cc90ed 39 while(1){
jurica238814 4:7dd2d8cc90ed 40 for(i=0; i<NRF52_SAADC::channelCounter; i++){
jurica238814 5:35f9fea8fe5b 41 voltage[i] = ((float)(diffADCs[i]->read()))*(3.3f/8192); // Convert raw data into voltage
jurica238814 4:7dd2d8cc90ed 42 sprintf(buffer, "ADC voltage is: %f", voltage[i]);
jurica238814 4:7dd2d8cc90ed 43 epd.writeString(buffer, 30, 50+i*20, 0);
jurica238814 4:7dd2d8cc90ed 44 }
jurica238814 2:49dab8d9637a 45 epd.write();
jurica238814 4:7dd2d8cc90ed 46 for(i=0; i<NRF52_SAADC::channelCounter; i++){
jurica238814 4:7dd2d8cc90ed 47 sprintf(buffer, "ADC voltage is: %f", voltage[i]);
jurica238814 4:7dd2d8cc90ed 48 epd.writeString(buffer, 30, 50+i*20, 1);
jurica238814 4:7dd2d8cc90ed 49 }
jurica238814 2:49dab8d9637a 50 epd.write();
jurica238814 0:04520242cfef 51 }
jurica238814 0:04520242cfef 52 }