AN3165 datasheet(18/31 Pages) STMICROELECTRONICS

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Integration principles and description

AN3165

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Doc ID 17180 Rev 1

Integration principles and description

4.1

Aim

The goal of this integration firmware is to merge the two sets of firmware described

previously into one single set that will manage both the dual FOC MC and the digital PFC

through one single STM32 MCU.

Figure 10.

Integrated firmware elements

4.2

Resource constraints

Several elements must be checked before the firmware can be integrated.

●

Availability of CPU load

●

Conflicts between peripherals

●

Conflicts between ports

●

IRQ priorities

4.2.1

CPU load

From the findings described in Section 2.6 and Section 3.5, it has been demonstrated that

there is sufficient CPU load available. The "STM32 Digital PFC" has a CPU load of 17% at

40 kHz, while it is of 58% at 12 kHz for the "STM32 dual FOC MC software demonstrator".

4.2.2

Conflicts between peripherals

From Section 2.4 and Section 3.3, it is deduced that both firmware sets use ADC1 and

ADC2. Table 4 explains their use.

AN3165 Datasheet(PDF) 18 Page - STMicroelectronics