stm32f4_adc_start_conv(9)

✨ NAME ✨

stm32f4_adc_start_conv — start conversions for regular channels. Yes bestie, this is the Kernel API Manual entry for stm32f4_adc_start_conv(9), and it is lowkey serving exactly what it says on the tin. 💅

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🫶 SYNOPSIS 🫶

The signature, verbatim, because we do not play with code:

void stm32f4_adc_start_conv (struct iio_dev *indio_dev , bool dma );

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💅 ARGUMENTS 💅

Okay so there are literally two arguments, and here’s the tea:

• indio_dev — IIO device instance. That’s the device, no cap. 🫶
• dma — use dma to transfer conversion result. The bool says whether dma is carrying the conversion result. ✨

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🎀 DESCRIPTION 🎀

Main character job: start conversions for regular channels. Periodt. 💖

It also takes care of normal or DMA mode. Circular DMA may be used for regular conversions, in IIO buffer modes. That’s the circular-DMA vibe when you’re in IIO buffer modes, iykyk. 🌈

Otherwise, use ADC interrupt with direct DR read instead (e.g. read_raw, or triggered buffer mode without DMA). So when it’s not that DMA setup, the move is the ADC interrupt with a direct DR read instead — for example read_raw, or triggered buffer mode without DMA. Slay. 🦋

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🌈 SEE ALSO 🌈

The whole linked squad, because we do not gatekeep references: 👑

• Kernel file: ./drivers/iio/adc/stm32-adc.c — the source file for this whole situation.
• Struct crew: struct stm32_adc_ic(9), struct stm32_adc_trig_info(9), struct stm32_adc_calib(9), struct stm32_adc_regs(9), struct stm32_adc_vrefint(9), struct stm32_adc_regspec(9), struct stm32_adc_cfg(9), struct stm32_adc(9), struct stm32_adc_info(9).
• IRQ function besties: stm32_adc_conv_irq_enable(9), stm32_adc_conv_irq_disable(9).
• H7 selfcalib crew: stm32h7_adc_read_selfcalib(9), stm32h7_adc_restore_selfcalib(9), stm32h7_adc_selfcalib(9), stm32h7_adc_check_selfcalib(9), stm32h7_adc_prepare(9).
• The rest of the function lineup: stm32_adc_conf_scan_seq(9), stm32_adc_get_trig_extsel(9), stm32_adc_set_trig(9), stm32_adc_single_conv(9), stm32_adc_validate_trigger(9), stm32_adc_debugfs_reg_access(9).

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mwah 💋 — source/version is ./drivers/iio/adc, the date is October 2026, and this iconic little page is stm32f4_adc_start_conv(9). That’s the whole manual, bestie. 🦋✨