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/*
xsns_24_si1145.ino - SI1145/46/47 UV Index / IR / Visible light sensor support for Tasmota
Copyright (C) 2021 Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_I2C
#ifdef USE_SI1145
/*********************************************************************************************\
* SI1145/46/47 - UV Index / IR / Visible light
*
* Based on library https://github.com/SeeedDocument/Grove-Sunlight_Sensor/
*
* I2C Addresses: 0x60
\*********************************************************************************************/
#define XSNS_24 24
#define XI2C_19 19 // See I2CDEVICES.md
#define SI114X_ADDR 0X60
//
//commands
//
#define SI114X_QUERY 0X80
#define SI114X_SET 0XA0
#define SI114X_NOP 0X00
#define SI114X_RESET 0X01
#define SI114X_BUSADDR 0X02
#define SI114X_PS_FORCE 0X05
#define SI114X_GET_CAL 0X12
#define SI114X_ALS_FORCE 0X06
#define SI114X_PSALS_FORCE 0X07
#define SI114X_PS_PAUSE 0X09
#define SI114X_ALS_PAUSE 0X0A
#define SI114X_PSALS_PAUSE 0X0B
#define SI114X_PS_AUTO 0X0D
#define SI114X_ALS_AUTO 0X0E
#define SI114X_PSALS_AUTO 0X0F
//
//IIC REGISTERS
//
#define SI114X_PART_ID 0X00
#define SI114X_REV_ID 0X01
#define SI114X_SEQ_ID 0X02
#define SI114X_INT_CFG 0X03
#define SI114X_IRQ_ENABLE 0X04
#define SI114X_IRQ_MODE1 0x05
#define SI114X_IRQ_MODE2 0x06
#define SI114X_HW_KEY 0X07
#define SI114X_MEAS_RATE0 0X08
#define SI114X_MEAS_RATE1 0X09
#define SI114X_PS_RATE 0X0A
#define SI114X_PS_LED21 0X0F
#define SI114X_PS_LED3 0X10
#define SI114X_UCOEFF0 0X13
#define SI114X_UCOEFF1 0X14
#define SI114X_UCOEFF2 0X15
#define SI114X_UCOEFF3 0X16
#define SI114X_WR 0X17
#define SI114X_COMMAND 0X18
#define SI114X_RESPONSE 0X20
#define SI114X_IRQ_STATUS 0X21
#define SI114X_ALS_VIS_DATA0 0X22
#define SI114X_ALS_VIS_DATA1 0X23
#define SI114X_ALS_IR_DATA0 0X24
#define SI114X_ALS_IR_DATA1 0X25
#define SI114X_PS1_DATA0 0X26
#define SI114X_PS1_DATA1 0X27
#define SI114X_PS2_DATA0 0X28
#define SI114X_PS2_DATA1 0X29
#define SI114X_PS3_DATA0 0X2A
#define SI114X_PS3_DATA1 0X2B
#define SI114X_AUX_DATA0_UVINDEX0 0X2C
#define SI114X_AUX_DATA1_UVINDEX1 0X2D
#define SI114X_RD 0X2E
#define SI114X_CHIP_STAT 0X30
//
//Parameters
//
#define SI114X_CHLIST 0X01
#define SI114X_CHLIST_ENUV 0x80
#define SI114X_CHLIST_ENAUX 0x40
#define SI114X_CHLIST_ENALSIR 0x20
#define SI114X_CHLIST_ENALSVIS 0x10
#define SI114X_CHLIST_ENPS1 0x01
#define SI114X_CHLIST_ENPS2 0x02
#define SI114X_CHLIST_ENPS3 0x04
#define SI114X_PSLED12_SELECT 0X02
#define SI114X_PSLED3_SELECT 0X03
#define SI114X_PS_ENCODE 0X05
#define SI114X_ALS_ENCODE 0X06
#define SI114X_PS1_ADCMUX 0X07
#define SI114X_PS2_ADCMUX 0X08
#define SI114X_PS3_ADCMUX 0X09
#define SI114X_PS_ADC_COUNTER 0X0A
#define SI114X_PS_ADC_GAIN 0X0B
#define SI114X_PS_ADC_MISC 0X0C
#define SI114X_ALS_IR_ADC_MUX 0X0E
#define SI114X_AUX_ADC_MUX 0X0F
#define SI114X_ALS_VIS_ADC_COUNTER 0X10
#define SI114X_ALS_VIS_ADC_GAIN 0X11
#define SI114X_ALS_VIS_ADC_MISC 0X12
#define SI114X_LED_REC 0X1C
#define SI114X_ALS_IR_ADC_COUNTER 0X1D
#define SI114X_ALS_IR_ADC_GAIN 0X1E
#define SI114X_ALS_IR_ADC_MISC 0X1F
//
//USER SETTINGS DEFINE
//
//ADCMUX
#define SI114X_ADCMUX_SMALL_IR 0x00
#define SI114X_ADCMUX_VISIABLE 0x02
#define SI114X_ADCMUX_LARGE_IR 0x03
#define SI114X_ADCMUX_NO 0x06
#define SI114X_ADCMUX_GND 0x25
#define SI114X_ADCMUX_TEMPERATURE 0x65
#define SI114X_ADCMUX_VDD 0x75
//LED SEL
#define SI114X_PSLED12_SELECT_PS1_NONE 0x00
#define SI114X_PSLED12_SELECT_PS1_LED1 0x01
#define SI114X_PSLED12_SELECT_PS1_LED2 0x02
#define SI114X_PSLED12_SELECT_PS1_LED3 0x04
#define SI114X_PSLED12_SELECT_PS2_NONE 0x00
#define SI114X_PSLED12_SELECT_PS2_LED1 0x10
#define SI114X_PSLED12_SELECT_PS2_LED2 0x20
#define SI114X_PSLED12_SELECT_PS2_LED3 0x40
#define SI114X_PSLED3_SELECT_PS2_NONE 0x00
#define SI114X_PSLED3_SELECT_PS2_LED1 0x10
#define SI114X_PSLED3_SELECT_PS2_LED2 0x20
#define SI114X_PSLED3_SELECT_PS2_LED3 0x40
//ADC GAIN DIV
#define SI114X_ADC_GAIN_DIV1 0X00
#define SI114X_ADC_GAIN_DIV2 0X01
#define SI114X_ADC_GAIN_DIV4 0X02
#define SI114X_ADC_GAIN_DIV8 0X03
#define SI114X_ADC_GAIN_DIV16 0X04
#define SI114X_ADC_GAIN_DIV32 0X05
//LED CURRENT
#define SI114X_LED_CURRENT_5MA 0X01
#define SI114X_LED_CURRENT_11MA 0X02
#define SI114X_LED_CURRENT_22MA 0X03
#define SI114X_LED_CURRENT_45MA 0X04
//Recovery period the ADC takes before making a PS measurement
#define SI114X_ADC_COUNTER_1ADCCLK 0X00
#define SI114X_ADC_COUNTER_7ADCCLK 0X01
#define SI114X_ADC_COUNTER_15ADCCLK 0X02
#define SI114X_ADC_COUNTER_31ADCCLK 0X03
#define SI114X_ADC_COUNTER_63ADCCLK 0X04
#define SI114X_ADC_COUNTER_127ADCCLK 0X05
#define SI114X_ADC_COUNTER_255ADCCLK 0X06
#define SI114X_ADC_COUNTER_511ADCCLK 0X07
//ADC MISC
#define SI114X_ADC_MISC_LOWRANGE 0X00
#define SI114X_ADC_MISC_HIGHRANGE 0X20
#define SI114X_ADC_MISC_ADC_NORMALPROXIMITY 0X00
#define SI114X_ADC_MISC_ADC_RAWADC 0X04
//INT OE
#define SI114X_INT_CFG_INTOE 0X01
//IRQ ENABLE
#define SI114X_IRQEN_ALS 0x01
#define SI114X_IRQEN_PS1 0x04
#define SI114X_IRQEN_PS2 0x08
#define SI114X_IRQEN_PS3 0x10
uint16_t si1145_visible;
uint16_t si1145_infrared;
uint16_t si1145_uvindex;
bool si1145_type = false;
uint8_t si1145_valid = 0;
/********************************************************************************************/
uint8_t Si1145ReadByte(uint8_t reg)
{
return I2cRead8(SI114X_ADDR, reg);
}
uint16_t Si1145ReadHalfWord(uint8_t reg)
{
return I2cRead16LE(SI114X_ADDR, reg);
}
void Si1145WriteByte(uint8_t reg, uint16_t val)
{
I2cWrite8(SI114X_ADDR, reg, val);
}
uint8_t Si1145WriteParamData(uint8_t p, uint8_t v)
{
Si1145WriteByte(SI114X_WR, v);
Si1145WriteByte(SI114X_COMMAND, p | SI114X_SET);
return Si1145ReadByte(SI114X_RD);
}
/********************************************************************************************/
bool Si1145Present(void)
{
return (Si1145ReadByte(SI114X_PART_ID) == 0X45);
}
void Si1145Reset(void)
{
Si1145WriteByte(SI114X_MEAS_RATE0, 0);
Si1145WriteByte(SI114X_MEAS_RATE1, 0);
Si1145WriteByte(SI114X_IRQ_ENABLE, 0);
Si1145WriteByte(SI114X_IRQ_MODE1, 0);
Si1145WriteByte(SI114X_IRQ_MODE2, 0);
Si1145WriteByte(SI114X_INT_CFG, 0);
Si1145WriteByte(SI114X_IRQ_STATUS, 0xFF);
Si1145WriteByte(SI114X_COMMAND, SI114X_RESET);
delay(10);
Si1145WriteByte(SI114X_HW_KEY, 0x17);
delay(10);
}
void Si1145DeInit(void)
{
//ENABLE UV reading
//these reg must be set to the fixed value
Si1145WriteByte(SI114X_UCOEFF0, 0x29);
Si1145WriteByte(SI114X_UCOEFF1, 0x89);
Si1145WriteByte(SI114X_UCOEFF2, 0x02);
Si1145WriteByte(SI114X_UCOEFF3, 0x00);
Si1145WriteParamData(SI114X_CHLIST, SI114X_CHLIST_ENUV | SI114X_CHLIST_ENALSIR | SI114X_CHLIST_ENALSVIS | SI114X_CHLIST_ENPS1);
//
//set LED1 CURRENT(22.4mA)(It is a normal value for many LED)
//
Si1145WriteParamData(SI114X_PS1_ADCMUX, SI114X_ADCMUX_LARGE_IR);
Si1145WriteByte(SI114X_PS_LED21, SI114X_LED_CURRENT_22MA);
Si1145WriteParamData(SI114X_PSLED12_SELECT, SI114X_PSLED12_SELECT_PS1_LED1);
//
//PS ADC SETTING
//
Si1145WriteParamData(SI114X_PS_ADC_GAIN, SI114X_ADC_GAIN_DIV1);
Si1145WriteParamData(SI114X_PS_ADC_COUNTER, SI114X_ADC_COUNTER_511ADCCLK);
Si1145WriteParamData(SI114X_PS_ADC_MISC, SI114X_ADC_MISC_HIGHRANGE | SI114X_ADC_MISC_ADC_RAWADC);
//
//VIS ADC SETTING
//
Si1145WriteParamData(SI114X_ALS_VIS_ADC_GAIN, SI114X_ADC_GAIN_DIV1);
Si1145WriteParamData(SI114X_ALS_VIS_ADC_COUNTER, SI114X_ADC_COUNTER_511ADCCLK);
Si1145WriteParamData(SI114X_ALS_VIS_ADC_MISC, SI114X_ADC_MISC_HIGHRANGE);
//
//IR ADC SETTING
//
Si1145WriteParamData(SI114X_ALS_IR_ADC_GAIN, SI114X_ADC_GAIN_DIV1);
Si1145WriteParamData(SI114X_ALS_IR_ADC_COUNTER, SI114X_ADC_COUNTER_511ADCCLK);
Si1145WriteParamData(SI114X_ALS_IR_ADC_MISC, SI114X_ADC_MISC_HIGHRANGE);
//
//interrupt enable
//
Si1145WriteByte(SI114X_INT_CFG, SI114X_INT_CFG_INTOE);
Si1145WriteByte(SI114X_IRQ_ENABLE, SI114X_IRQEN_ALS);
//
//AUTO RUN
//
Si1145WriteByte(SI114X_MEAS_RATE0, 0xFF);
Si1145WriteByte(SI114X_COMMAND, SI114X_PSALS_AUTO);
}
bool Si1145Begin(void)
{
if (!Si1145Present()) { return false; }
Si1145Reset();
Si1145DeInit();
return true;
}
// returns the UV index * 100 (divide by 100 to get the index)
uint16_t Si1145ReadUV(void)
{
return Si1145ReadHalfWord(SI114X_AUX_DATA0_UVINDEX0);
}
// returns visible+IR light levels
uint16_t Si1145ReadVisible(void)
{
return Si1145ReadHalfWord(SI114X_ALS_VIS_DATA0);
}
// returns IR light levels
uint16_t Si1145ReadIR(void)
{
return Si1145ReadHalfWord(SI114X_ALS_IR_DATA0);
}
/********************************************************************************************/
bool Si1145Read(void)
{
if (si1145_valid) { si1145_valid--; }
if (!Si1145Present()) { return false; }
si1145_visible = Si1145ReadVisible();
si1145_infrared = Si1145ReadIR();
si1145_uvindex = Si1145ReadUV();
si1145_valid = SENSOR_MAX_MISS;
return true;
}
void Si1145Detect(void)
{
if (I2cActive(SI114X_ADDR)) { return; }
if (Si1145Begin()) {
si1145_type = true;
I2cSetActiveFound(SI114X_ADDR, "SI1145");
}
}
void Si1145Update(void)
{
if (!Si1145Read()) {
AddLogMissed("SI1145", si1145_valid);
}
}
#ifdef USE_WEBSERVER
const char HTTP_SNS_SI1145[] PROGMEM =
"{s}SI1145 " D_ILLUMINANCE "{m}%d " D_UNIT_LUX "{e}" // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
"{s}SI1145 " D_INFRARED "{m}%d " D_UNIT_LUX "{e}"
"{s}SI1145 " D_UV_INDEX "{m}%d.%d{e}";
#endif // USE_WEBSERVER
void Si1145Show(bool json)
{
if (si1145_valid) {
if (json) {
ResponseAppend_P(PSTR(",\"SI1145\":{\"" D_JSON_ILLUMINANCE "\":%d,\"" D_JSON_INFRARED "\":%d,\"" D_JSON_UV_INDEX "\":%d.%d}"),
si1145_visible, si1145_infrared, si1145_uvindex /100, si1145_uvindex %100);
#ifdef USE_DOMOTICZ
if (0 == TasmotaGlobal.tele_period) DomoticzSensor(DZ_ILLUMINANCE, si1145_visible);
#endif // USE_DOMOTICZ
#ifdef USE_WEBSERVER
} else {
WSContentSend_PD(HTTP_SNS_SI1145, si1145_visible, si1145_infrared, si1145_uvindex /100, si1145_uvindex %100);
#endif
}
}
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xsns24(uint8_t function)
{
if (!I2cEnabled(XI2C_19)) { return false; }
bool result = false;
if (FUNC_INIT == function) {
Si1145Detect();
}
else if (si1145_type) {
switch (function) {
case FUNC_EVERY_SECOND:
Si1145Update();
break;
case FUNC_JSON_APPEND:
Si1145Show(1);
break;
#ifdef USE_WEBSERVER
case FUNC_WEB_SENSOR:
Si1145Show(0);
break;
#endif // USE_WEBSERVER
}
}
return result;
}
#endif // USE_SI1145
#endif // USE_I2C
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