ADC 12bit in STM32f4 discovery

[41003160]

Posted on December 07, 2013 at 17:01

Hi. Can you show me ADC register map of  ADC1 and ADC2 12 bit? in example incle lib  ADC3_DR_ADDRESS     0x4001224C. I read manual but can find it. In ADC I see 0x000 - 0x04C ADC1.0x100 - 0x14C ADC2.Thanks

[Tesla DeLorean]

Posted on December 07, 2013 at 19:46

Reference Manual page 427

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/DM00031020.pdf

ADC1 +0x000 ADC2 +0x100 ADC3 +0x200 Common + 0x300 (Dual/Triple Modes) Assume also (uint32_t)(&ADC1->DR),  (uint32_t)(&ADC2->DR),  (uint32_t)(&ADC3->DR) 12-bit / Alignment AS configured

[41003160]

Posted on December 09, 2013 at 09:16

Yes. thanks

But when I use example in STM32F4-Discovery_FW_V1.1.0. I write ADC1 and ADC2 instead ADC3. adc1 : 40012000 and adc2 40012100.but it doesn't working.

[Tesla DeLorean]

Posted on December 09, 2013 at 13:11

Yeah, I'm not exactly sure what you're doing, or what constitutes not working, provide a more complete context and explanation.

The ADC_DR is at offset 0x4C within the register window. DMA is not working against the base address of the ADC.