How to use PWM as DAC?
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‎2016-08-04 3:49 AM
STM32F207VE Custom Board. I want to generate a PWM of 50-50 duty cycle with varying voltages (zero-to-maximum) like a DAC which gives output based on count. I do not have the schematic now. I'm directly viewing the waveform on scope via breakout pins. The amplitude of the waveform must be in my control. I am successful in generating PWM wave but with a constant amplitude <3V>. How do I change the voltage now?
I'm using Timer 4. #adc #stm32 #pwm #dma #dac #stm32f2xx- Labels:
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ADC
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DAC
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DMA
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STM32F2 Series
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TIM
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‎2016-08-04 5:44 AM
Hi ganala.manikanta,
Please avoid duplication of posts, Check this [DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/How%20to%20use%20PWM%20as%20DAC%202956&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B¤tviews=17]thread.-Syrine-- Mark as New
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‎2016-08-04 6:10 AM
> Please avoid duplication of posts, Check this [DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/How%20to%20use%20PWM%20as%20DAC%202956&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B¤tviews=17]thread.
If it was another, ''regular'' forum, I would agree. But here, always assume double-threads/posts are just another M$ Sharepoint error.
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‎2016-08-04 6:17 AM
@Syrine
In other forums you just delete such empty/duplicate threads, no explanation is required. It is likely not the OP's fault, he likely got an error posting, assuming the post didn't get made, and resubmitted it.Up vote any posts that you find helpful, it shows what's working..
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‎2016-08-04 10:46 AM
@clive1---Exactly! I intend to post only once. My internet connection lost while submitting and I submitted again thinking that first attempt was unsuccessful. I've tried deleting one of two but there is no such option (like many other forums).
