Add configuration to flash by ecpdap.

fpga/99-cmsis-dap.rules

@@ -0,0 +1,2 @@
+# Allow access to all CMSIS-DAP compatible adapters
+ATTRS{product}=="*CMSIS-DAP*", MODE="660", GROUP="plugdev", TAG+="uaccess"

fpga/Readme.md

@@ -6,6 +6,22 @@
 sudo apt-get install build-essential clang bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev build-essential libboost-system-dev libboost-thread-dev libboost-program-options-dev libboost-test-dev libboost-iostreams-dev python3.9-dev libboost-iostreams-dev libeigen3-dev libudev-dev cmake python3-pip gcc gdb autoconf automake libtool libusb-dev libusb-1.0-0-dev python2.7-dev
 ```
 
+## install ecpdap for configuration to the flash
+
+```bash
+curl https://sh.rustup.rs -sSf | sh  # install catgo
+cargo install ecpdap # install ecpdap
+# Run ecpdap help for detailed usage.
+
+# install CMSIS-DAP probes driver
+sudo cp 99-cmsis-dap.rules /etc/udev/rules.d  
+sudo udevadm control --reload 
+
+ecpdap flash write xxx.bit   # Write configuration to the flash
+ecpdap program xxx.bit       # Configure with xxx.svf
+ecpdap flash erase           # Erase flash
+```
+
 ## install verilator form source to use new version
 
 ```

fpga/blink/Makefile

@@ -16,8 +16,10 @@ $(TARGET).bit: $(TARGET).cfg
 ${TARGET}.svf : ${TARGET}.bit
 
 prog: ${TARGET}.svf
-	# openFPGALoader -c digilent_hs2 $(TARGET).bit
+	./dapprog blink.svf
-	./dapprog ${TARGET}.svf 
+
+flash: ${TARGET}.bit
+	ecpdap flash write blink.bit
 
 clean:
 	rm -f *.svf *.bit *.config *.ys *.json