BSEC 1.4.7.3 Arduino Integration || Standalone example problems

[bosched]

Hey there,

since Arduino 1.8.9 and BSEC 1.4.7.3 is out for a month i thought i give it a shoot to see what improvements being made.

Downloaded the BSEC from the mainpage and followed the workaround procedures listed on github, everything worked well for the very basic (library)examples. But the bsec_iot_example (and ultimately my custom made sketch, which is in production mode on a lower BSEC version) throws an error during linking.

After a deeper look at compiler.c.elf.extra_flags and compiler.libraries.ldflags i realized that no linker argument for libalgobsec is passed. No wonder:

If you have already used the previous example code and hack guide, remove the linker flag -libalgobsec in the platform.txt file

So, at least with the standalone example you will need the linker flag  compiler.c.elf.libs .... -lalgobsec to link the parts without exiting.

What is the reason? The structure?

[bosched]

The Linker problem now "solved", another problem occured.

I ran into a "Error while initializing BME680"

Error while initializing BME680
-2 (ret.bme680_status)

Exception (0):
epc1=0x4000e296 epc2=0x00000000 epc3=0x402026f5 excvaddr=0x00000000 depc=0x00000000

>>>stack>>>

ctx: cont
sp: 3ffffa20 end: 3fffffc0 offset: 01a0
3ffffbc0:  00000000 00000000 00000000 3ffffc40  
3ffffbd0:  3ffffef8 3fff0938 3fff0d38 40254d74  
3ffffbe0:  00000000 4bc6a7f0 fa1cac08 00000000  
3ffffbf0:  89bf0fc0 00000000 00000000 40240000  
3ffffc00:  00000000 401c0000 00000000 00000000  
3ffffc10:  00000907 000003e8 00000000 3fff0270  
3ffffc20:  00234358 000003e8 00000000 3fff0270  
3ffffc30:  00000000 00000000 89bf0fc0 40254574  
3ffffc40:  00000000 3fff0130 40202377 402026e8  
3ffffc50:  3fff0130 00000000 00000000 40202383  
3ffffc60:  00000000 00000000 00000000 00000000  
3ffffc70:  00000000 00000000 00000000 00000000  
3ffffc80:  00000000 00000000 00000000 00000000  
3ffffc90:  00000000 00000000 00000000 00000000  
3ffffca0:  00000000 00000000 00000000 00000000  
3ffffcb0:  00000000 00000000 00000000 00000000  
3ffffcc0:  00000000 00000000 00000000 00000000  
3ffffcd0:  00000000 00000000 00000000 00000000  
3ffffce0:  00000000 00000000 00000000 00000000  
3ffffcf0:  00000000 00000000 00000000 00000000  
3ffffd00:  00000000 00000000 00000000 00000000  
3ffffd10:  00000000 00000000 00000000 00000000  
3ffffd20:  00000000 00000000 00000000 00000000  
3ffffd30:  00000000 00000000 00000000 00000000  
3ffffd40:  00000000 00000000 00000000 00000000  
3ffffd50:  00000000 00000000 00000000 00000000  
3ffffd60:  00000000 00000000 00000000 00000000  
3ffffd70:  00000000 00000000 00000000 00000000  
3ffffd80:  00000000 00000000 00000000 00000000  
3ffffd90:  00000000 00000000 00000000 00000000  
3ffffda0:  00000000 00000000 00000000 00000000  
3ffffdb0:  00000000 00000000 00000000 00000000  
3ffffdc0:  00000000 00000000 00000000 00000000  
3ffffdd0:  00000000 00000000 00000000 00000000  
3ffffde0:  00000000 00000000 00000000 00000000  
3ffffdf0:  00000000 00000000 00000000 00000000  
3ffffe00:  00000000 00000000 00000000 00000000  
3ffffe10:  00000000 00000000 00000000 00000000  
3ffffe20:  00000000 00000000 00000000 00000000  
3ffffe30:  00000000 00000000 00000000 00000000  
3ffffe40:  00000000 00000000 00000000 00000000  
3ffffe50:  00000000 00000000 00000000 00000000  
3ffffe60:  00000000 00000000 00000000 00000000  
3ffffe70:  00000000 00000000 00000000 00000000  
3ffffe80:  00000000 00000000 00000000 00000000  
3ffffe90:  3fffff10 00000000 3fffff0f 402128b2  
3ffffea0:  00000000 00000000 00000000 3fff0130  
3ffffeb0:  00000032 0000000a 3fff0130 4020e3f4  
3ffffec0:  3ffefe34 00000020 3fff0088 4020e765  
3ffffed0:  3fffff0f feefeffe 3fff007c 4020ce0d  
3ffffee0:  0000000c 842b2cf4 3fffff0e 4020e9a3  
3ffffef0:  00000050 00000000 00000000 00000000  
3fffff00:  00000000 00000000 00000000 40212800  
3fffff10:  00000000 0000002d 3fff2b2c 3fff0270  
3fffff20:  000000fe 00000002 402026e8 4020e3f4  
3fffff30:  402026fc 3fff0130 3fff0130 40202a70  
3fffff40:  40217f60 00002710 3fff0130 4020e9f4  
3fffff50:  0000000a 40217f5c 3fff0130 4020e8b8  
3fffff60:  000000fe 3fff0130 3fff0130 3fff0270  
3fffff70:  000000fe 3fff0130 402026e8 402035ee  
3fffff80:  40217f64 feefeffe feefeffe feefeffe  
3fffff90:  326461fe 00000000 40217f80 40217f68  
3fffffa0:  3fffdad0 00000000 3fff0240 402102bc  
3fffffb0:  feefeffe feefeffe 3ffe8548 401017ad  
<<<stack<<<

Reverting to my old sketch from the last BSEC revision works fine, yet throws a library error which i basically can ignore. (libalgobsec.a i think)

(BTW: The same error occurs if I run the basic library example)

Microcontroller: AIThinker NodeMCU ESP-12
Arduino: 1.8.9 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module),..."

[bosched]

Another trace of the functions called up until the error occured (BME680_E_COM_FAIL / -2)

->bme680_init
Null pointer check / Result: 0 (Device structure is fine)
->soft reset
Null pointer check / Result: 0 (Device structure is fine)
(Softreset) -> set_regs
Null pointer check / Result: 0 (Device structure is fine)
(set_regs) Index 0
(set_regs) BME680_E_COM_FAIL / -2
Result set_regs: -2
Result (soft reset):-2
  API init failed
Error while initializing BME680
-2

[JohnRob]

Not that it helps you but I was able to get the standalone example running on an STM32F processor.   I tried to compile it for the NodeMCU V1 but I had'nt modified the ESP file as described in the read me so I did not persue it.   One of the issues for me was I have files in bad places from previous frustration with the previoud BSEC release.

I found deleting everything Bosch from the library , hardware and Arduino15 directorys helped me get going.

[bosched · Accepted solution]

Got it.

In the 1.4.7.3 release the I2C connections are reversed (or were in 1.4.7.x)

You have to change

/** BME680 I2C addresses */
#define BME680_I2C_ADDR_PRIMARY		UINT8_C(0x76)
#define BME680_I2C_ADDR_SECONDARY	UINT8_C(0x77)

into

/** BME680 I2C addresses */
#define BME680_I2C_ADDR_PRIMARY		UINT8_C(0x77)
#define BME680_I2C_ADDR_SECONDARY	UINT8_C(0x76)

in the bme680_defs.h

or simply switch wires 😜