Posted on May 12, 2015 at 01:12 So in `SD_PowerON` there is a comment at the bottom that says `/* else MMC Card */`. `hsd->CardType` is never set to `MULTIMEDIA_CARD` which is defined in `stm32f4xx_hal_sd.h`, and read in `HAL_SD_WideBusOperation_Co...

Posted on March 02, 2015 at 13:36I can receive one byte over DMA, but then thats it. What is the correct way to use the DMA USART - its not obvious. I am using FreeRTOS.Here is my code:```void task(void) {  status = HAL_UART_Receive_DMA(&huart1, (ui...

Posted on March 02, 2015 at 13:00I am trying to receive GPS data over USART. I previously attempted ''polling mode'' which produced garbled/corrupted output. Now trying interrupt mode without success. I am also using FreeRTOS.```#define RXBUFFERSIZE...

Posted on March 02, 2015 at 02:47 I have a project configured the same as the `UART_Hyperterminal_DMA` example from the `STM32Cube_FW_F4_V1.4.0`. I am reading NMEA strings from a GPS device. When I print byte-by-byte over virtual c...