Hi,
I have a board which has bme680 already attached, I am running a linux for embedded devices i.e. compiled with buildroot.
:/root# i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: UU -- -- -- -- -- -- -- -- -- -- -- -- UU -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- 38 -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- 51 -- -- -- -- -- 57 -- -- 5a -- -- -- -- --
60: -- -- -- -- 64 -- -- -- 68 -- -- -- -- -- -- UU
70: UU -- -- -- -- -- UU --
The bold UU is the place where the bme680 is connected to, this is what I have been told and I run some micropython code to get the reading from the sensor as follows,
TEMP:30.94C
HUMIDITY:7.207%
PRESSURE:1027.23hPa
GAS:235016.0
The micropython uses /sys/bus/i2c/drivers/bme680_i2c/1-0076/iio:device*/name" in the python code.
But when I try to use the Bosch Sensortec Environmental Cluster (BSEC) Software instead of my micropython code with my main-custom.c file using bme68x.c, bme68x.c and bme68x_defs and compile all together using the libalgobsec.a file provided for the RaspberryPi/PiFour_Armv8 using command
/toolchain/bin/aarch64-linux-gcc main-custom.c \
-o main -L ./algo/bsec_IAQ/bin/RaspberryPi/PiFour_Armv8 \
-lalgobsec -lm -I./algo/bsec_IAQ/bin/RaspberryPi/PiFour_Armv8 \
-I ./algo/bsec_IAQ/bin/RaspberryPi/PiFour_Armv8 \
-I ./bme68x/ \
-Wall ./mycode.c \
-Wall ./bme68x/bme68x.c, I get the following error,
I get "API name [bme68x_init] Error [-3] : Device not found" on bme68x_init(&bme),
when I tried debugging I found that following is never true in the following code because dev->chip_id is always equal to 241 i.e. 0xf1,
dev->chip_id == BME68X_CHIP_ID
I then changed the following in the bme68x_defs.h file and assigned it 0x0f1 value, afterwards I didn't get that error but I don't get any reading from the sensor too.
BME68X_CHIP_ID UINT8_C(0x61)
what I don't understand is that why I get the wrong chip_id, for bme680 shouldn't it be unique across the globe i.e. 0x61 ?
