SDIO Driver Sample Application

Description

The SDIO Driver sample application validates SDIO host/device communication on SR110 with a connected WLAN module.

It performs an end-to-end SDIO bring-up and transfer sequence, including:

SDIO host initialization and clock/voltage setup.
SDIO device initialization flow (CMD0/CMD5/CMD52-based setup and readiness checks).
CMD52 register read/write verification.
CMD53 data transfer verification in byte mode and block mode (read and write).
Data integrity checks between transmitted and received buffers.

The sample logs each stage with pass/fail status so users can verify SDIO link functionality and transfer correctness.

Hardware Requirements

Astra Machina Micro (SR110)
WLAN chip module 4612 or 43711 attached to the board (required)

Prerequisites

Choose one setup path:
- CLI: Setup and Install SDK using CLI
- VS Code: Setup and Install SDK using VS Code

Building and Flashing the Example using VS Code

Use the VS Code flow described in the SR110 guide and the VS Code Extension guide:

Build (VS Code):

Open Build and Deploy -> Build Configurations.
Select sdio_sample_app in the Application dropdown.
Build with Build (SDK + App) for the first build, or Build App for rebuilds.

Flash (VS Code):

Use Image Conversion to generate the flash image.
Use Image Flashing (SWD/JTAG) to flash the firmware image.

Building and Flashing the Example using CLI

Use the CLI flow described in the SR110 guide:

SR110 Build and Flash with CLI

Build (CLI):

From <sdk-root>/examples, build the example:

cd <sdk-root>/examples
export SRSDK_DIR=<sdk-root>
make cm55_sdio_sample_app_defconfig BOARD=SR110_RDK BUILD=SRSDK

Flash (CLI):

Activate the SDK venv (required for image generation tools):

# Linux/macOS
source <sdk-root>/.venv/bin/activate
# Windows PowerShell
.\.venv\Scripts\Activate.ps1

Generate the flash image:

cd <sdk-root>/tools/srsdk_image_generator
python srsdk_image_generator.py \
  -B0 \
  -flash_image \
  -sdk_secured \
  -spk "<sdk-root>/tools/srsdk_image_generator/B0_Input_examples/spk_rc4_1_0_secure_otpk.bin" \
  -apbl "<sdk-root>/tools/srsdk_image_generator/B0_Input_examples/sr100_b0_bootloader_ver_0x012F_ASIC.axf" \
  -m55_image "<sdk-root>/examples/out/sr110_cm55_fw/release/sr110_cm55_fw.elf" \
  -flash_type "GD25LE128" \
  -flash_freq "67"

Flash the firmware image:

cd <sdk-root>
python tools/openocd/scripts/flash_xspi_tcl.py \
  --cfg_path tools/openocd/configs/sr110_m55.cfg \
  --image tools/srsdk_image_generator/Output/B0_Flash/B0_flash_full_image_GD25LE128_67Mhz_secured.bin \
  --erase-all

Running the Application using VS Code Extension

Ensure the 4612/43711 WLAN chip is attached to the Astra Machina Micro board.
Press RESET on the board after flashing.
For logging output, click SERIAL MONITOR and connect to the DAP logger port on J14.
- To make it easier to identify, ensure only J14 is plugged in (not J13).
- The logger port is not guaranteed to be consistent across OSes. As a starting point:
  - Windows: try the lower-numbered J14 COM port first.
  - Linux/macOS: try the higher-numbered J14 port first.
- If you do not see logs after a reset, switch to the other J14 port.
SDIO sample logs appear in the logger window, including CMD52/CMD53 transfer checks and pass/fail results.

Expected Logs

SR100.Logger	warning	1771669272.006958	LOGR	0	M55	00:06:31:469:192	Changing logger interface to LOGGER_IF_UART_1

SR100.Logger	info	1771669272.006958	SYS 	0	M55	00:00:00:000:023	Application drivers initialization complete without errors.

SR100.Logger	info	1771669272.017984	SYS 	0	M55	00:00:00:004:210	sr110 SDK version 1.3.0

SR100.Logger	info	1771669272.133226	SDIO	0	M55	00:00:00:106:701	SDIO Init Success

SR100.Logger	info	1771669272.133226	SDIO	0	M55	00:00:00:107:219	SDIO Host Init Success

SR100.Logger	info	1771669272.133226	SDIO	0	M55	00:00:00:109:501	Driver Strength Register: 0x00001007

SR100.Logger	info	1771669272.133226	SDIO	0	M55	00:00:00:110:895	SDIO device initialized successfully on instance 1

SR100.Logger	info	1771669272.14888	SDIO	0	M55	00:00:00:110:921	SDIO IO Device Init Success

SR100.Logger	info	1771669272.14888	SDIO	0	M55	00:00:00:110:945	SDIO Initialization Complete

SR100.Logger	info	1771669272.14888	SDIO	0	M55	00:00:00:111:696	Read Chip ID : 0xbf aa 40 10

SR100.Logger	info	1771669272.14888	SDIO	0	M55	00:00:00:111:723	CMD52 Read/Write verification: start

SR100.Logger	info	1771669274.689167	SDIO	0	M55	00:00:02:673:792	CMD52 Verification successful! All values matched

SR100.Logger	info	1771669274.689167	SDIO	0	M55	00:00:02:673:819	CMD52 Read/Write verification: completed

SR100.Logger	info	1771669274.689167	SDIO	0	M55	00:00:02:675:793	Block Write Completed!

SR100.Logger	info	1771669274.717445	SDIO	0	M55	00:00:02:675:816	Setting the buffer to 0

SR100.Logger	info	1771669274.718649	SDIO	0	M55	00:00:02:684:793	Block Read Completed!

SR100.Logger	info	1771669274.718649	SDIO	0	M55	00:00:02:684:820	All values matched!

SR100.Logger	info	1771669274.720658	SDIO	0	M55	00:00:02:685:793	Block Write Completed!

SR100.Logger	info	1771669274.721665	SDIO	0	M55	00:00:02:685:816	Setting the buffer to 0

SR100.Logger	info	1771669274.73682	SDIO	0	M55	00:00:02:694:794	Block Read Completed!

SR100.Logger	info	1771669274.73682	SDIO	0	M55	00:00:02:694:820	All values matched!

SR100.Logger	info	1771669274.73682	SDIO	0	M55	00:00:02:695:799	DATA MATCHED!!

SR100.Logger	info	1771669274.73682	SDIO	0	M55	00:00:02:695:841	Block Write Completed!

SR100.Logger	info	1771669274.73682	SDIO	0	M55	00:00:02:695:864	Setting the buffer to 0

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:704:794	Block Read Completed!

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:704:817	All values matched!

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:704:852	DATA MATCHED!!

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:705:794	Block Write Completed!

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:705:817	Setting the buffer to 0

SR100.Logger	info	1771669274.752534	SDIO	0	M55	00:00:02:714:795	Block Read Completed!

SR100.Logger	info	1771669274.780773	SDIO	0	M55	00:00:02:714:821	All values matched!

SR100.Logger	info	1771669274.784571	SDIO	0	M55	00:00:02:715:800	DATA MATCHED!!

SR100.Logger	info	1771669274.784571	SDIO	0	M55	00:00:02:715:822	Setting the buffer to 0

SR100.Logger	info	1771669274.784571	SDIO	0	M55	00:00:02:723:862	Block Read Completed!

SR100.Logger	info	1771669274.786466	SDIO	0	M55	00:00:02:723:885	Setting the buffer to 0

SR100.Logger	info	1771669274.786466	SDIO	0	M55	00:00:02:732:797	All values matched!

SR100.Logger	info	1771669274.786466	SDIO	0	M55	00:00:02:732:820	Block Read Completed1!

SR100.Logger	info	1771669274.786466	SDIO	0	M55	00:00:02:732:843	Setting the buffer to 0

SR100.Logger	info	1771669274.786466	SDIO	0	M55	00:00:02:741:796	Block Read Completed!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:742:796	Block Write Completed!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:743:796	Block Write Completed!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:743:819	Setting the buffer to 0

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:752:796	Block Read Completed!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:752:846	All values matched!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:753:801	DATA MATCHED!!

SR100.Logger	info	1771669274.800496	SDIO	0	M55	00:00:02:753:824	SDIO Sample App Completed!