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RL-RTX 
RL-FlashFS 
Technical Data NAND Flash Translation Layer Embedded File System Memory Organization Allocation Information File Data Fragments 
Configuring RL-FlashFS Source Files Configuration Options 
File System Flash Drive SPI Flash Drive RAM Drive Memory Card Drive USB Flash Drive NAND Flash Drive Using RL-FlashFS Using Flash Devices Flash Driver Sector Layout Converting FlashPrg.c Converting FlashDev.c Limitations When Using Internal Flash Using SPI Flash Devices SPI Flash Driver SPI Sector Layout Using RAM Devices Using Memory Card Devices MCI Driver SPI Driver Using FlashFS with USB Devices FAT Driver Using NAND Devices NAND Driver NAND Page Data Layout Function Overview File I/O Routines File Maintenance Routines File Time Support Routines Flash Driver Routines FAT Driver Routines MCI Driver Routines SPI Driver Routines NAND Driver Routines IOC Interface Routines System Routines RL-TCPnet RL-CAN RL-USB Example Programs Library Reference AppendixMCI Driver Routines
MCI driver routines provide operations to communicate with a memory card in SD-Native mode. The MCI interface routines are not reentrant.
| Routine | Description |
|---|---|
| Init | Initializes the MCI controller. |
| UnInit | Uninitializes the MCI controller. |
| Delay | Delays a program execution in the driver. |
| BusMode | Sets the bus mode to push-pull or open-drain. |
| BusWidth | Sets the bus width to 1-bit or 4-bit bus. |
| BusSpeed | Set the desired baud rate speed for the MCI interface. |
| Command | Sends SD/MMC command. |
| ReadBlock | Reads data from SD/MMC memory card. |
| WriteBlock | Writes data to SD/MMC memory card. |
| SetDma | Sets the DMA for data transfer. |
| CheckMedia | Checks the SD/MMC media status (Card Inserted, Write Protected). |
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