DMA Interrupt in top model and ADC block in reference model (which uses DMA) causes a build failure with STM32 Support Package

Question

MathWorks Support Team 2024-8-5

回答： MathWorks Support Team 2024-8-5

When trying to build a model for STM32 with ADC & Hardware Interrupt blocks, the code generation fails with the following error:

stm_adc_ll.c:520: multiple definition of 'DMA1_Stream1_IRQHandler'

This only happens when using a referenced model with the interrupt on the top level:

If the DMA interrupt is inside the referenced model, code generation is working as expected. How can this error be avoided?

Answer 1

This is a known limitation. An ADC block that uses DMA, and the DMA interrupt needs to be in the same model.