Hi team,
I am trying to run BMSCCTX using Pi as MCU.
1. I read the L9963 E and L9963 T datasheets. i found that any 8 bit message wakes up the BMS , i tried sending sample messages like 8 bit zeros and was able to turn on d2 led of bms.
if the wake up is done correct, bms should return a default frame of 0x0000000016. But i am not getting it and after 1 min it goes to sleep mode.
when i run a code, D2, D8 and D9 lights up, but D7 - for spi is not blinking.
2. I also have one more doutb, inside the bms, the L9963 T converts 4 pin spi to 2 pin ISOp and ISOm pins which goes to L9963E as ISOLp_SDI and ISOLm_NCS.
Does the output of the L9963 E comes from the same? as it is bidirectional. Or ISOHp and ISOHm are the output pins for L9963E??
3. If I am using only one BMSCCTX, to get the replies from E should i loopback connect ISOL pins with ISOH pins?
4. In AEK-MCU-C4MINI sample projects i see the pins-TXEN, DIS, BNE, ISOAm, ISOFreq are connected as GPIOs
whereas i am using Pi and hard-strapping these pins to power and gnd respectively.
Do these pins configurations plays a important part for accepting and replying commands that i send?.If u know how the configurations are done to these pins, please let me know so that i can try wit that and help me get a success
5. One more think, i tried checking with multimeter the ISOHp and ISOHm pins . It shows the resistance between them is almost zero meaning a presence of short. is it ok? It shouldnt be like that right?. Is there a default in my board?
