SPI Mode SD Cards on Tang Nano 9K and 20K with PicoRV32 RISC-V Core скачать в хорошем качестве

SPI Mode SD Cards on Tang Nano 9K and 20K with PicoRV32 RISC-V Core

Tang Nano 9K and 20K FPGA development boards have a micro-SD card slot. This video shows how to initialize and then read or write raw blocks on the SD card. It uses SD's SPI mode to make this simple. SD is integrated into a mini system-on-a-chip (SoC) on the FPGA. The mini-SoC is based on the PicoRV32 RISC-V soft core. The FPGA design is in Verilog. The SD support uses a hybrid scheme with software making use of a Verilog module that writes 8-bits onto the SPI bus while reading the 8 bits returned from the card. The GitHub below contains Gowin project files for both the Tang Nano 9K and 20K boards. It also has software to run on the PicoRV32. Chapters 0:00 Introduction 0:37 SD functions 1:42 System in action 2:53 Software 4:50 Performance 6:11 Programming model 6:41 Verilog 9:51 Software build 10:47 Summary GitHub: git clone https://github.com/grughuhler/picorv3... cd picorv32_tang_nano_unified git checkout sd_card_spi See README and c_code/README sd_card_spi is a git tag for the version featured in this video. First mini-SoC video:    • Tang Nano 9K Simple PicoRV32-based SoC on ...   See also my PicoRV32 Mini SoC playlist