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DAC

In current mainline, the generator’s DAC responsibility is straightforward: it reads the DAC channels enabled in CubeMX, generates matching STM32DAC instances, and injects the initial output value plus reference voltage from libxr_config.yaml into the constructor arguments.

This path currently does not generate DMA-related DAC setup.

Example​

The generator reads each enabled DAC channel and emits code like:

STM32DAC dac1_out1(&hdac1, DAC_CHANNEL_1, 0.0, 3.3);

Configuration File​

After the previous generation step, a DAC section appears in User/libxr_config.yaml:

DAC:
  dac1:
    init_voltage: 0.0
    vref: 3.3
  • init_voltage: initial output voltage-like target
  • vref: reference voltage used by the generated constructor arguments

Current generator coverage​

In current GeneratorCodeSTM32.py, the DAC generation path mainly does the following:

  • read the enabled channel list for each DAC peripheral;
  • normalize DAC_OUTx into DAC_CHANNEL_x;
  • read DAC.<instance>.init_voltage and DAC.<instance>.vref from configuration;
  • generate instance code such as STM32DAC dac1_out1(&hdac1, DAC_CHANNEL_1, 0.0, 3.3);.

If a DAC peripheral has no enabled channels, the current generator does not emit any DAC instance for it.