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el12t2o · 2014-10-18

Posted on October 18, 2014 at 15:09When I write data to USART1 register (for Tx) either via USART1->SR or USART_SendData(USART1, ...) I am experiencing an odd data corruption issue. The data out of the USART port is transmitted correctly however ot...

el12t2o · 2014-10-20

Posted on October 20, 2014 at 23:44[quote]I have one SPI port transmitting (using DMA and SPI master mode) via a long chain of shift registers, and another SPI port receiving (using DMA and SPI slave mode). I'm running at about 7MHz SPI clock which ...

el12t2o · 2014-10-20

Posted on October 20, 2014 at 23:29Good suggestion on the data watch point.I set it up. It doesn't trip after I run through one USART write. The corruption still occurs.When I write it from my program it does trip.Later, I'll try seeing if reading v...

el12t2o · 2014-10-18

Posted on October 18, 2014 at 16:21Thanks for your input.The DMA is one shot and initiated by a timer interrupt (although the bug still occurs if initiated manually.) Transfer is about 1KB lasting ~3ms every 5ms.I am using global variables in severa...

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Memory corruption when using USART1

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