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FDC2212.cpp
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FDC2212.cpp
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/**
* @file FDC2212.cpp
* @author Rasa Bakhtiar ([email protected])
* @brief FDC (Capacitance-to-digital-converter) driver for the CapFill boards. Defines functions
*
* ----------------------------- FDC2212QDNTTQ1 DATASHEET ------------------------------------
* https://www.ti.com/lit/ds/symlink/fdc2212-q1.pdf?ts=1723228575967&ref_url=https%253A%252F%252Fwww.mouser.co.uk%252F
*
* @version 0.1
* @date 2024-08-9
*
* @copyright Copyright (c) 2023-2024
*
*/
#include "FDC2212.h"
#include "Config/pinmap_config.h"
boolean FDC2212::setup() {
int devId = read16FDC(FDC2212_DEVICE_ID);
Serial.println(devId);
if (devId != 0x3055) {
return false;
};
loadSettings();
return true;
};
void FDC2212::loadSettings() {
if (channel == 0) {
write16FDC(FDC2212_CONFIG, 0x1481);
write16FDC(FDC2212_SETTLECOUNT_CH0, 0x64);
write16FDC(FDC2212_RCOUNT_CH0, 0xFFFF);
write16FDC(FDC2212_OFFSET_CH0, 0x0000);
write16FDC(FDC2212_CLOCK_DIVIDERS_CH0, 0x2001);
write16FDC(FDC2212_DRIVE_CURRENT_CH0, 0xF800);
} else {
write16FDC(FDC2212_CONFIG, 0x5481);
write16FDC(FDC2212_SETTLECOUNT_CH1, 0x64);
write16FDC(FDC2212_RCOUNT_CH1, 0xFFFF);
write16FDC(FDC2212_OFFSET_CH1, 0x0000);
write16FDC(FDC2212_CLOCK_DIVIDERS_CH1, 0x2001);
write16FDC(FDC2212_DRIVE_CURRENT_CH1, 0xF800);
}
write16FDC(FDC2212_MUX_CONFIG, 0x820D); //set mux config for channels
};
uint32_t FDC2212::getReading28(uint8_t chann) {
uint32_t reading;
if (chann == 0) {
reading = (uint32_t) read16FDC(FDC2212_DATA_CH0) << 16;
reading |= read16FDC(FDC2212_DATA_LSB_CH0);
return reading;
} else if (chann == 1) {
reading = (uint32_t) read16FDC(FDC2212_DATA_CH1) << 16;
reading |= read16FDC(FDC2212_DATA_LSB_CH1);
return reading;
} else {
return 10000000;
}
};
uint16_t FDC2212::read16FDC(uint16_t address) {
uint16_t data = 0;
wire.beginTransmission(i2caddress);
wire.write(static_cast<uint8_t>(address));
wire.endTransmission();
wire.requestFrom(i2caddress, 2);
if (wire.available() != 2) {
Serial.print("Availabe not working:");
Serial.println(wire.available());
} else {
uint8_t MSB = wire.read();
uint8_t LSB = wire.read();
data = (MSB << 8) | LSB;
}
return data;
};
void FDC2212::write16FDC(uint16_t address, uint16_t data) {
wire.beginTransmission(i2caddress);
wire.write(static_cast<uint8_t>(address));
wire.write(data >> 8);
wire.write(data & 0xFF);
wire.endTransmission();
};