v3.5 Correction of moisture readings for SHT4x sensors.

pvvx · Dec 12, 2021 · 6a1831b · 6a1831b
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commit 6a1831b
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Showing 9 changed files with 10 additions and 6 deletions.
diff --git a/ATC_V34d.bin → ATC_V35.bin b/ATC_V34d.bin → ATC_V35.bin
diff --git a/CGG1_v34c.bin → CGG1_v35.bin b/CGG1_v34c.bin → CGG1_v35.bin
diff --git a/MHO_C401_v34c.bin → MHO_C401_v35.bin b/MHO_C401_v34c.bin → MHO_C401_v35.bin
diff --git a/README.md b/README.md
@@ -145,6 +145,7 @@ In case you want to go back to the original firmware, you can download them here
 |     3.2 | Added [new encrypted beacon formats](https://github.com/pvvx/ATC_MiThermometer/issues/94#issuecomment-846984018), reed switch maintenance
 |     3.3 | Added autodetection for [LYWSD03MMC hardware versions B1.6 and B1.9](https://github.com/pvvx/ATC_MiThermometer/issues/125). For CGG1-M and MHO-C401 - autodetection of SHTV3 or SHT4x sensors
 |     3.4 | Correct Hardware Version Setting for [LYWSD03MMC B1.7](https://github.com/pvvx/ATC_MiThermometer/issues/145)
+|     3.5 | Correction of moisture readings for SHT4x sensors.
 
 
 ## Applications

diff --git a/firmware.json b/firmware.json
@@ -1,3 +1,3 @@
-{"version": 52, 
-"custom":["ATC_V34d.bin", "MHO_C401_v34c.bin", "CGG1_v34c.bin", "ATC_V34d.bin", "ATC_V34d.bin", "ATC_V34d.bin"], 
+{"version": 53, 
+"custom":["ATC_V35.bin", "MHO_C401_v35.bin", "CGG1_v35.bin", "ATC_V35.bin", "ATC_V35.bin", "ATC_V35.bin"], 
 "original":["Original_OTA_Xiaomi_LYWSD03MMC_v1.0.0_0130.bin","Original_OTA_Xiaomi_MHO_C401_v1.0.0_0010.bin","Original_OTA_CGG1_v1.0.1_0093.bin","Original_OTA_Xiaomi_LYWSD03MMC_v1.0.0_0130.bin","Original_OTA_Xiaomi_LYWSD03MMC_v1.0.0_0130.bin","Original_OTA_Xiaomi_LYWSD03MMC_v1.0.0_0130.bin"]}
diff --git a/src/app_config.h b/src/app_config.h
@@ -4,7 +4,7 @@
 extern "C" {
 #endif
 
-#define VERSION 0x34	 // BCD format (0x34 -> '3.4')
+#define VERSION 0x35	 // BCD format (0x34 -> '3.4')
 #define EEP_SUP_VER 0x09 // EEP data minimum supported version
 
 #define DEVICE_LYWSD03MMC   0x055B	// LCD display LYWSD03MMC

diff --git a/src/sensors.c b/src/sensors.c
@@ -136,7 +136,10 @@ _attribute_ram_code_ __attribute__((optimize("-Os"))) int read_sensor_cb(void) {
 			while(reg_i2c_status & FLD_I2C_CMD_BUSY);
 			if(crc == data && _temp != 0xffff) {
 				measured_data.temp = ((int32_t)(17500*_temp) >> 16) - 4500 + cfg.temp_offset * 10; // x 0.01 C
-				measured_data.humi = ((uint32_t)(10000*_humi) >> 16) + cfg.humi_offset * 10; // x 0.01 %
+				if(sensor_i2c_addr == (SHTC3_I2C_ADDR << 1))
+					measured_data.humi = ((uint32_t)(10000*_humi) >> 16) + cfg.humi_offset * 10; // x 0.01 %
+				 else
+					measured_data.humi = ((uint32_t)(12500*_humi) >> 16) - 600 + cfg.humi_offset * 10; // x 0.01 %
 				if(measured_data.humi < 0) measured_data.humi = 0;
 				else if(measured_data.humi > 9999) measured_data.humi = 9999;
 				measured_data.count++;

diff --git a/test_adv_cust.py b/test_adv_cust.py
@@ -1,7 +1,7 @@
 import asyncio
 import struct
 import binascii
-from Crypto.Cipher import AES
+from Crypto.Cipher import AES #pip install pycryptodome
 
 def parse_value(hexvalue):
 	vlength = len(hexvalue)

diff --git a/test_adv_key.py b/test_adv_key.py
@@ -1,7 +1,7 @@
 import asyncio
 import struct
 import binascii
-from Crypto.Cipher import AES
+from Crypto.Cipher import AES #pip install pycryptodome
 
 def parse_value(hexvalue, typecode):
 	vlength = len(hexvalue)