libresolar / bq769x0-arduino-library Goto Github PK

Hi
I think here in updateCurrent function you should use shuntResistorValue_mOhm insteade of 5.0
Am i right?

if (ignoreCCReadyFlag == true || sys_stat.bits.CC_READY == 1)
{
adcVal = (readRegister(0x32) << 8) | readRegister(0x33);
batCurrent = adcVal * 8.44 / 5.0; // mA

your this project very very great and ı will use in my graduate project.. so , thank you very much

ı want to ask some queastions ;

ı will use arduıno and l included cloumb countıng SOC and OCV from mbed to arduıno. l use bq 76920 for 3 cells so what kind of settings l must make (for 3 cells ) in software and arduıno sketch ?...

and l designed pcb in eagle like you but l use 1206 47ohm res for batteries res, but you used 2512 47ohm res. can it be problem?

best regards and so so thank you,

Guten Tag Martin,

Gibt es ein Grund warum in ArduinoLibrary nutzen Sie bootpin? Für mbed nutzen Sie es nicht?
Danke.

MfG
Andrew.
PS:
Ich habe beide Bibliotheken angeschaut. Für mbed frisst zu viel Speicher.

FYI. Please update line 623 of the .cpp file to be:

int16_t adcVal = 0; //has to explicitly be a 16bit signed int.

Merely calling out "int adcVal = 0;" is not enough. According to the datasheet, the adc value must explicitly be a 16 bit value, otherwise the signed calculation will break.

The ADC current is signed (2's compliment), because the BQ chips can sense charging and discharging.

sample code doesn't compile :(
Error is connected with :

#if BQ769X0_DEBUG
void printRegisters(void);
#endif

When I comment it, it compiles, but I need this for debuging of course.
I assume, that this is a simple problem, but I have not much experience with programming. Please help.

Hi,

The adc_offset is currently defined as int, but it is 8 bits long and signed.

With it being read into an int, the sign-bit will be interpreted incorrectly.

Could it be updated to change:

int adcOffset;  // mV

to

signed char adcOffset;  // mV

?

Thanks,

David

Congratulations for your project. Is it possible to use the library also for the high side configuration, using bq769200 and bq76200?

Will this library be able to work with BQ769x0 devices which have CRC enabled at any point? If not if you could point me in the right direction I could have a go at implementing it myself.