USING SD CARD WITH STM32H7 - WITH FREERTOS NON-BLOCKING MODE
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2019-05-22 8:39 PM
Hi All,
I wish to use an 8 GByte Hi speed micro SD card to log data on an STM32H743VIT (100 Pin pkg) custom board. The system is being used as a precision mains voltage and power quality monitor with a basic WiFi Modem.
I have got all the analog processing working fine but am struggling with the SD Card software.
I am using freeRTOS and wish to read and write to the card in non-blocking mode.
I noticed that the driver config file (stm32h7xx_hal_conf.h) has the following entry:
#define USE_SD_TRANSCEIVER 1U /*!< use uSD Transceiver */
The example for the H7 Eval board (which is now unobtainable) uses a transceiver for the SD Card. I guess that's for reliable operation at high speed. I don't have any experience with SD cards and I have the following questions.
- Should I use an SD card transceiver or can I connect the card up to the sdmmc1 port without it?
- Is the example SD Card freeRTOS code example for the Eval board STM32H743XI OK to use and is it non-blocking?
- If the code has errors does anyone know what they are?
- Has anyone got a u sd card working in non-blocking mode?
- Does anyone know where I can get the H743 Evaluation Board?
The software example I am using is:
\STM32Cube_FW_H7_V1.3.0\Projects\STM32H743I_EVAL\Applications\FatFs\FatFs_uSD_DMA_RTOS
Rob
- Labels:
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FreeRTOS
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SDIO-SDMMC
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STM32H7 Series
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2020-09-06 1:23 AM
Hello my friend
Do you know how to use the wifi module (ISM43340-M4G-L44-10CF) of the stm32h7b3i-dk board?
Any example of a WIFI http server with stm32h7b3i-dk ???
