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no-library version, persistent naming option

This commit is contained in:
Vic 2021-01-12 03:27:06 +01:00
parent 4e5e3d419b
commit d7e29f0703
1 changed files with 126 additions and 39 deletions
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165
tasmota/xsns_81_seesaw_soil.ino
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@ -20,11 +20,14 @@
#ifdef USE_I2C
#ifdef USE_SEESAW_SOIL
/*********************************************************************************************\
* SEESAW_SOIL - Capacitance & Temperature Sensor
*
* I2C Address: 0x36, 0x37, 0x38, 0x39
*
* Memory footprint: 1296 bytes flash, 64 bytes RAM
*
* NOTE: #define SEESAW_SOIL_PUBLISH enables immediate MQTT on soil moisture change
* otherwise the moisture value will only be emitted every TelePeriod
* #define SEESAW_SOIL_RAW enables displaying analog capacitance input in the
@ -34,19 +37,26 @@
#define XSNS_81 81
#define XI2C_56 56 // See I2CDEVICES.md
#include "Adafruit_seesaw.h"
#include "Adafruit_seesaw.h" // we only use definitions, no code
#define SEESAW_SOIL_MAX_SENSORS 4
#define SEESAW_SOIL_START_ADDRESS 0x36
//#define SEESAW_SOIL_RAW // enable raw readings
//#define SEESAW_SOIL_PUBLISH // enable immediate publish
//#define SEESAW_SOIL_PERSISTENT_NAMING // enable naming sensors by i2c address
//#define DEBUG_SEESAW_SOIL // enable debugging
#define SEESAW_SOIL_MAX_SENSORS 4
#define SEESAW_SOIL_START_ADDRESS 0x36
const char SeeSoilName[] = "SeeSoil"; // spaces not allowed for Homeassistant integration/mqtt topics
uint8_t SeeSoilCount = 0; // global sensor count
struct SEESAW_SOIL {
Adafruit_seesaw *ss; // instance pointer
uint16_t capacitance;
float temperature;
uint8_t address;
uint8_t address; // i2c address
float moisture;
float temperature;
#ifdef SEESAW_SOIL_RAW
uint16_t capacitance; // raw analog reading
#endif // SEESAW_SOIL_RAW
} SeeSoil[SEESAW_SOIL_MAX_SENSORS];
// Used to convert capacitance into a moisture.
@ -56,48 +66,122 @@ struct SEESAW_SOIL {
// So let's make a scale that converts those (apparent) facts into a percentage
#define MAX_CAPACITANCE 1020.0f // subject to calibration
#define MIN_CAPACITANCE 320 // subject to calibration
#define CAP_TO_MOIST(c) ((max((int)(c),MIN_CAPACITANCE)-MIN_CAPACITANCE)/(MAX_CAPACITANCE-MIN_CAPACITANCE))
#define CAP_TO_MOIST(c) ((max((int)(c),MIN_CAPACITANCE)-MIN_CAPACITANCE)/(MAX_CAPACITANCE-MIN_CAPACITANCE)*100)
/********************************************************************************************/
/*********************************************************************************************\
* i2c routines
\*********************************************************************************************/
void SEESAW_SOILDetect(void) {
Adafruit_seesaw *SSptr=0;
uint8_t buf;
uint32_t i, addr;
for (uint32_t i = 0; i < SEESAW_SOIL_MAX_SENSORS; i++) {
int addr = SEESAW_SOIL_START_ADDRESS + i;
if (!I2cSetDevice(addr)) { continue; }
if (!SSptr) { // don't have an object,
SSptr = new Adafruit_seesaw(); // allocate one
}
if (SSptr->begin(addr)) {
SeeSoil[SeeSoilCount].ss = SSptr; // save copy of pointer
SSptr = 0; // mark that we took it
SeeSoil[SeeSoilCount].address = addr;
SeeSoil[SeeSoilCount].temperature = NAN;
SeeSoil[SeeSoilCount].capacitance = 0;
I2cSetActiveFound(SeeSoil[SeeSoilCount].address, SeeSoilName);
SeeSoilCount++;
}
for (i = 0; i < SEESAW_SOIL_MAX_SENSORS; i++) {
addr = SEESAW_SOIL_START_ADDRESS + i;
if ( ! I2cSetDevice(addr)) { continue; }
delay(1);
SEESAW_Reset(addr); // reset all seesaw MCUs at once
}
if (SSptr) {
delete SSptr; // used object for detection, didn't find anything so we don't need this object
delay(500); // give MCUs time to boot
for (i = 0; i < SEESAW_SOIL_MAX_SENSORS; i++) {
addr = SEESAW_SOIL_START_ADDRESS + i;
if ( ! I2cSetDevice(addr)) { continue; }
if ( ! SEESAW_ValidRead(addr, SEESAW_STATUS_BASE, SEESAW_STATUS_HW_ID, &buf, 1, 0)) {
continue;
}
if (buf != SEESAW_HW_ID_CODE) {
#ifdef DEBUG_SEESAW_SOIL
AddLog_P(LOG_LEVEL_DEBUG, PSTR("SEE: HWID mismatch ADDR=%X, ID=%X"), addr, buf);
#endif // DEBUG_SEESAW_SOIL
continue;
}
SeeSoil[SeeSoilCount].address = addr;
SeeSoil[SeeSoilCount].temperature = NAN;
SeeSoil[SeeSoilCount].moisture = NAN;
#ifdef SEESAW_SOIL_RAW
SeeSoil[SeeSoilCount].capacitance = 0; // raw analog reading
#endif // SEESAW_SOIL_RAW
I2cSetActiveFound(SeeSoil[SeeSoilCount].address, SeeSoilName);
SeeSoilCount++;
}
}
float SEESAW_Temp(uint8_t addr) { // get temperature from seesaw at addr
uint8_t buf[4];
if (SEESAW_ValidRead(addr, SEESAW_STATUS_BASE, SEESAW_STATUS_TEMP, buf, 4, 1000)) {
int32_t ret = ((uint32_t)buf[0] << 24) | ((uint32_t)buf[1] << 16) |
((uint32_t)buf[2] << 8) | (uint32_t)buf[3];
return ConvertTemp((1.0 / (1UL << 16)) * ret);
}
return NAN;
}
float SEESAW_Moist(uint8_t addr) { // get moisture from seesaw at addr
uint8_t buf[2];
uint16_t ret;
int32_t tries = 2;
while (tries--) {
delay(1);
if (SEESAW_ValidRead(addr, SEESAW_TOUCH_BASE, SEESAW_TOUCH_CHANNEL_OFFSET, buf, 2, 3000)) {
ret = ((uint16_t)buf[0] << 8) | buf[1];
#ifdef SEESAW_SOIL_RAW
for (int i=0; i < SeeSoilCount; i++) {
if (SeeSoil[i].address == addr) {
SeeSoil[i].capacitance = ret;
break;
}
}
#endif // SEESAW_SOIL_RAW
if (ret != 0xFFFF) { return (float) CAP_TO_MOIST(ret); }