diff --git a/variants/t1000-e/t1000e_sensors.cpp b/variants/t1000-e/t1000e_sensors.cpp new file mode 100644 index 00000000..17693022 --- /dev/null +++ b/variants/t1000-e/t1000e_sensors.cpp @@ -0,0 +1,119 @@ +#include +#include "t1000e_sensors.h" + +#define HEATER_NTC_BX 4250 // thermistor coefficient B +#define HEATER_NTC_RP 8250 // ohm, series resistance to thermistor +#define HEATER_NTC_KA 273.15 // 25 Celsius at Kelvin +#define NTC_REF_VCC 3000 // mV, output voltage of LDO +#define LIGHT_REF_VCC 2400 // + +static unsigned int ntc_res2[136]={ + 113347,107565,102116,96978,92132,87559,83242,79166,75316,71677, + 68237,64991,61919,59011,56258,53650,51178,48835,46613,44506, + 42506,40600,38791,37073,35442,33892,32420,31020,29689,28423, + 27219,26076,24988,23951,22963,22021,21123,20267,19450,18670, + 17926,17214,16534,15886,15266,14674,14108,13566,13049,12554, + 12081,11628,11195,10780,10382,10000,9634,9284,8947,8624, + 8315,8018,7734,7461,7199,6948,6707,6475,6253,6039, + 5834,5636,5445,5262,5086,4917,4754,4597,4446,4301, + 4161,4026,3896,3771,3651,3535,3423,3315,3211,3111, + 3014,2922,2834,2748,2666,2586,2509,2435,2364,2294, + 2228,2163,2100,2040,1981,1925,1870,1817,1766,1716, + 1669,1622,1578,1535,1493,1452,1413,1375,1338,1303, + 1268,1234,1202,1170,1139,1110,1081,1053,1026,999, + 974,949,925,902,880,858, +}; + +static char ntc_temp2[136]= +{ + -30,-29,-28,-27,-26,-25,-24,-23,-22,-21, + -20,-19,-18,-17,-16,-15,-14,-13,-12,-11, + -10,-9,-8,-7,-6,-5,-4,-3,-2,-1, + 0,1,2,3,4,5,6,7,8,9, + 10,11,12,13,14,15,16,17,18,19, + 20,21,22,23,24,25,26,27,28,29, + 30,31,32,33,34,35,36,37,38,39, + 40,41,42,43,44,45,46,47,48,49, + 50,51,52,53,54,55,56,57,58,59, + 60,61,62,63,64,65,66,67,68,69, + 70,71,72,73,74,75,76,77,78,79, + 80,81,82,83,84,85,86,87,88,89, + 90,91,92,93,94,95,96,97,98,99, + 100,101,102,103,104,105, +}; + +static float get_heater_temperature( unsigned int vcc_volt, unsigned int ntc_volt ) +{ + int i = 0; + float Vout = 0, Rt = 0, temp = 0; + Vout = ntc_volt; + + Rt = ( HEATER_NTC_RP * vcc_volt ) / Vout - HEATER_NTC_RP; + + for( i = 0; i < 136; i++ ) + { + if( Rt >= ntc_res2[i] ) + { + break; + } + } + + temp = ntc_temp2[i - 1] + 1 * ( ntc_res2[i - 1] - Rt ) / ( float )( ntc_res2[i - 1] - ntc_res2[i] ); + + temp = ( temp * 100 + 5 ) / 100; + return temp; +} + +static int get_light_lv( unsigned int light_volt ) +{ + float Vout = 0, Vin = 0, Rt = 0, temp = 0; + unsigned int light_level = 0; + + if( light_volt <= 80 ) + { + light_level = 0; + return light_level; + } + else if( light_volt >= 2480 ) + { + light_level = 100; + return light_level; + } + Vout = light_volt; + light_level = 100 * ( Vout - 80 ) / LIGHT_REF_VCC; + + return light_level; +} + +float t1000e_get_temperature( void ) +{ + unsigned int ntc_v, vcc_v; + + digitalWrite(PIN_3V3_EN, HIGH); + digitalWrite(SENSOR_EN, HIGH); + analogReference(AR_INTERNAL_3_0); + analogReadResolution(12); + delay(10); + vcc_v = (1000.0*(analogRead(BATTERY_PIN) * ADC_MULTIPLIER * AREF_VOLTAGE)) / 4096; + ntc_v = (1000.0 * AREF_VOLTAGE * analogRead(TEMP_SENSOR)) / 4096; + digitalWrite(PIN_3V3_EN, LOW); + digitalWrite(SENSOR_EN, LOW); + + return get_heater_temperature (vcc_v, ntc_v); +} + +uint32_t t1000e_get_light( void ) +{ + int lux = 0; + unsigned int lux_v = 0; + + digitalWrite(SENSOR_EN, HIGH); + analogReference(AR_INTERNAL_3_0); + analogReadResolution(12); + delay(10); + lux_v = 1000 * analogRead(LUX_SENSOR) * AREF_VOLTAGE / 4096; + lux = get_light_lv( lux_v ); + digitalWrite(SENSOR_EN, LOW); + + return lux; +} \ No newline at end of file diff --git a/variants/t1000-e/t1000e_sensors.h b/variants/t1000-e/t1000e_sensors.h new file mode 100644 index 00000000..8f3967ca --- /dev/null +++ b/variants/t1000-e/t1000e_sensors.h @@ -0,0 +1,8 @@ +#pragma once + +// Light and temperature sensors are on ADC ports +// functions adapted from Seeed examples to get values +// see : https://github.com/Seeed-Studio/Seeed-Tracker-T1000-E-for-LoRaWAN-dev-board + +extern uint32_t t1000e_get_light(); +extern float t1000e_get_temperature(); \ No newline at end of file diff --git a/variants/t1000-e/target.cpp b/variants/t1000-e/target.cpp index 29ca1acd..caa53930 100644 --- a/variants/t1000-e/target.cpp +++ b/variants/t1000-e/target.cpp @@ -1,4 +1,5 @@ #include +#include "t1000e_sensors.h" #include "target.h" #include @@ -160,6 +161,10 @@ bool T1000SensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& if (requester_permissions & TELEM_PERM_LOCATION) { // does requester have permission? telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude); } + if (requester_permissions & TELEM_PERM_ENVIRONMENT) { + telemetry.addLuminosity(TELEM_CHANNEL_SELF, t1000e_get_light()); + telemetry.addTemperature(TELEM_CHANNEL_SELF, t1000e_get_temperature()); + } return true; }