Posted on November 15, 2017 at 02:02Hello All,I am trying to use double buffer mode on one of the GPIO ports - using the timer method; and I've enabled circular DMA mode and have enabled M0AR and M1AR; but when the first transfer takes place; I'm ge...
Posted on November 11, 2017 at 15:31Hello,I'm using the STM32F407VG in a project; doing DMA to/from memory from GPIOD using TIM1_CH1; and I'm seeing the DMA xfer get stuck - meaning; on RCV I only get the first byte; and on XMIT I only see the last ...
Posted on September 15, 2016 at 12:03Hello All,Does ST provide source code for a starting point on bootloaders for the STM327x family?If so, can you point me to the source code?Thanks In Advance,John W. #stm32f7x-firmware-bootloader
Posted on September 14, 2016 at 07:56Hello,Does ST have a list of NAND FLASH memory that is compatible with ST's FMC controller that is in the STM32Fx family?Thanks,John W. #stm32f7x-nand-ecc
Posted on September 14, 2016 at 07:50Hello,Does ST have a list of compatible DCMI cameras that work with embedded synchronization?(That work with the STM32Fx family.)Are there any example schematics?A list of the cameras would be helpful.Thanks,John...
Posted on November 15, 2017 at 14:38OK KE.Thanks for the reply.Another issue I just saw makes me think the TIM1_CH1 input clock is being divided by 2 - but I don't know how that could be happening right now. It looks like every other byte is being ...
Posted on November 15, 2017 at 02:08I should add:Since the DMA physical path in this case is shared - meaning I'm using TIM1_CH1 for both xmit and rcv; and that has to be turned on and off; will circular mode work? I do have to turn off the stream ...
Posted on November 13, 2017 at 09:50Hello All,Actually, in this case, turns out to be the target device - it was asserting a control signal that was preventing the next byte in the DMA stream to be sent; so the code works as advertised.The hardest p...
Posted on November 12, 2017 at 10:09I've been using this - and data transfers - but always the same byte:TIM_DMACmd (TIM1, TIM_DMA_CC1, ENABLE ); /* Enable TIM1_CC1 DMA RequestsTIM1_CH1Data xfers across the interface - I can transmit and receive O...
Posted on November 12, 2017 at 09:55Tried this - but didn't do much other than xfer the same byte 12 times:TIM_DMAConfig(TIM1, TIM_DMABase_CCR1 ,TIM_DMABurstLength_12Transfers);
