Model-Based Design Toolbox (MBDT)のトピックRe: BMS & MBDT - MC33775A TPL communication with S32K

BMS & MBDT - MC33775A TPL communication with S32K

yassinechamam — Tue, 07 May 2024 09:02:27 GMT

Hello,

I want to know what i should change in the configuration to be able to read the values of two CMU.

thanks

Re: BMS & MBDT - MC33775A TPL communication with S32K

mariuslucianand — Wed, 15 May 2024 12:13:59 GMT

For such a scenario, we offer inside our MBDT for BMS 1.1.0 release an example, k344bmu_read_s32ct which handles 4 x MC33775 over TPL.

However, there are a couple of places in which you have to make some changes to achieve communication with a different number of BCCs.

1. Configuration tools project:

First, you have to go to S32CT/EB tresos, and for this, please open any MBDT block and press the Configure... button.

Go to Bms_common, and under the BMSCommon Driver configuration, and PHY-AFE Network configuration, you have to specify the number of Devices here, in your case, 2. TPL3_CMU_1 stands for MC33775 while the TPL3_CMU_2 stands for MC33774.

2. Change the initialization sequence

In the model, you have to go to the Initialize function, and under INIT_775a, to only change the Max DeviceNumber. The construction here is automatically performing the Wakeup and Enumeration for the selected number of devices.

Of course, inside the model, you have to adjust your application to handle the correct number of devices. In this case, the state machine only iterates through the numbers 1 to 4 so the state machine needs to be adjusted to fill your requirements.

Hope this helps,

Marius

Re: BMS & MBDT - MC33775A TPL communication with S32K

yassinechamam — Wed, 15 May 2024 13:30:31 GMT

Hello @mariuslucianand ,

Thank you for your response. i did apply the changes and i can read Cell and module Voltages but what i find strange is that the the last module voltages that i read have the exact same value all the time. Is the any other detail i need to consider ?

Also i want to read the voltage value measurement of the BJB BCC772C and i fail to understand how i can do the measurement of the values in this table using Simulink blocks.

Thank you in advance

Yacine Chamem

Re: BMS & MBDT - MC33775A TPL communication with S32K

MReza — Tue, 10 Dec 2024 07:08:05 GMT

Hello @yassinechamam @mariuslucianand, I am facing the same issue as mentioned in the reply, where the last Module and Cell Voltages are exactly the same. Has this issue been solved?

Thanks in advance