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restructure: splitting out sensor functions into their own source files

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This commit is contained in:
A.M. Rowsell 2026-06-27 14:12:43 -04:00
commit a6211b4c9d
8 changed files with 184 additions and 70 deletions
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41
ens.c Normal file
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#include "ens.h"
#include "hardware/i2c.h"
#include "pico/stdlib.h"
static const uint8_t ENS_ACTIVATE[2] = {0x10, 0x02};
static const uint8_t ENS_IDLE[2] = {0x10, 0x01};
void activateENS(void) {
i2c_write_blocking(i2c_default, ENS_ADDR, ENS_ACTIVATE, 2, false);
return;
}
void deactivateENS(void) {
i2c_write_blocking(i2c_default, ENS_ADDR, ENS_IDLE, 2, false);
return;
}
uint8_t getENSData(double *t, double *h, uint8_t *AQI, uint16_t *TVOC,
uint16_t *ECO2, uint16_t *ETOH) {
uint16_t K = (uint16_t)((*t + 273.15) * 64.0); // convert to ENS format
uint16_t RH = (uint16_t)*h * 512;
uint8_t inputData[5] = {0x13, (uint8_t)(K & 0x00FF), (uint8_t)(K >> 8),
(uint8_t)(RH & 0x00FF), (uint8_t)(RH >> 8)};
uint8_t result[7];
uint8_t dataReg = ENS_AQI;
uint8_t valid;
i2c_write_blocking(i2c_default, ENS_ADDR, inputData, 5, false);
sleep_ms(100);
i2c_write_blocking(i2c_default, ENS_ADDR, &dataReg, 1, true);
i2c_read_blocking(i2c_default, ENS_ADDR, result, 7, false);
*AQI = result[0];
*TVOC = (result[2] << 8) | result[1];
*ECO2 = (result[4] << 8) | result[3];
*ETOH = (result[6] << 8) | result[5];
dataReg = 0x20; // status register
i2c_write_blocking(i2c_default, ENS_ADDR, &dataReg, 1, true);
i2c_read_blocking(i2c_default, ENS_ADDR, result, 1, false);
valid = (result[0] & ENS_STATUS_MASK) == 0
? 1
: 0; // check if we are in warm-up or normal mode
return valid;
}