diff options
Diffstat (limited to 'example')
| -rw-r--r-- | example/Makefile | 3 | ||||
| -rw-r--r-- | example/README | 21 | ||||
| -rwxr-xr-x | example/ice4pi_prog | 8 |
3 files changed, 21 insertions, 11 deletions
diff --git a/example/Makefile b/example/Makefile index a55ea4c..2bc5d99 100644 --- a/example/Makefile +++ b/example/Makefile @@ -1,9 +1,10 @@ - rot.bin: rot.v rot.pcf yosys -q -p "synth_ice40 -blif rot.blif" rot.v arachne-pnr -p rot.pcf rot.blif -o rot.txt icebox_explain rot.txt > rot.ex icepack rot.txt rot.bin + +load: rot.bin ./ice4pi_prog rot.bin # iceprog rot.bin diff --git a/example/README b/example/README index bde2a04..100c6b9 100644 --- a/example/README +++ b/example/README @@ -1,18 +1,19 @@ -To install all necessary packages and synthesize and program ice4pi: +Assuming you are running on a Raspberry Pi 2-4 or Zero (tested with bullseye): + +1. Install all necessary packages to synthesize rot.v and build bit image (rot.bin) for the ice4pi: sudo apt-get install yosys fpga-icestorm arachne-pnr make -1. Make sure your Pi has SPI enabled - -2. There is a problem in arachne-pnr reporting bogus dependency conflict that can be worked around: - - apt-get source arachne-pnr - cd arachne-pnr-0.1+20180909git840bdfd-1.1/ - dpkg-buildpackage -us -uc -j2 - sudo dpkg -i ../arachne*.deb +2. Make sure your Pi has SPI enabled (e.g. use raspi-config) 3. Building and installing the flashrom tool - git clone https://www.flashrom.org/git/flashrom.git + + git clone https://github.com/lightside-instruments/flashrom.git cd flashrom make CONFIG_ENABLE_LIBPCI_PROGRAMMERS=no CONFIG_ENABLE_LIBUSB0_PROGRAMMERS=no CONFIG_ENABLE_LIBUSB1_PROGRAMMERS=no install + cd .. + +4. Load the rot.bin file to the shield: + + make load diff --git a/example/ice4pi_prog b/example/ice4pi_prog index dea5c7a..c747db8 100755 --- a/example/ice4pi_prog +++ b/example/ice4pi_prog @@ -1,7 +1,15 @@ #!/bin/bash echo 24 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio24/direction +echo 1 >/sys/class/gpio/gpio24/value +sleep 1 +echo 0 >/sys/class/gpio/gpio24/value + tr '\0' '\377' < /dev/zero | dd bs=1M count=4 of=image iflag=fullblock dd if=${1} conv=notrunc of=image flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=20000 -w image +#workaround first time fails after initial programming +flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=20000 -w image echo in > /sys/class/gpio/gpio24/direction +echo 24 > /sys/class/gpio/unexport + |