83 lines
2 KiB
Nix
83 lines
2 KiB
Nix
{ lib, config, pkgs, mmdvm_host, mmdvm_firmware, ... }:
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with lib;
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let
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# Shorter name to access final settings a
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# user of hello.nix module HAS ACTUALLY SET.
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# cfg is a typical convention.
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cfg = config.services.mmdvm_host;
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in
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{
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options.services.mmdvm_host = {
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enable = mkEnableOption "MMDVMHost service";
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host_package = mkOption {
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default = mmdvm_host.x86_64-linux.default;
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type = types.package;
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};
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firmware_package = mkOption {
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default = mmdvm_firmware.x86_64-linux.default;
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type = types.package;
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};
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user = mkOption {
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type = types.str;
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default = "afg";
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};
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group = mkOption {
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type = types.str;
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default = "afg";
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};
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config-file = mkOption {
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type = types.str;
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};
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usb-tty = mkOption {
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type = types.str;
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default = "/dev/ttyUSB0";
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};
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};
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config = mkIf cfg.enable {
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# List packages installed in system profile. To search, run:
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# $ nix search wget
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environment.systemPackages = [
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pkgs.stm32flash
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cfg.host_package
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];
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systemd.services.mmdvm_host = {
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wantedBy = [ "multi-user.target" ];
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wants = [ "network.target" ];
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after = [ "network.target" ];
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description = "MMDVMHost service";
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serviceConfig = {
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Type = "exec";
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User = cfg.user;
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Group = cfg.group;
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Restart = "always";
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RestartSec = "3s";
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RuntimeDirectory = "MMDVMHost";
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};
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script = ''
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if [ ! -e /var/lib/mmdvm/firmware-version ]; then
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mkdir -p /var/lib/mmdvm
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touch /var/lib/mmdvm/firmware-version
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fi
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if [ "${cfg.firmware_package}" != "$(cat /var/lib/mmdvm/firmware-version)" ]; then
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${pkgs.stm32flash}/bin/stm32flash -w ${cfg.firmware_package}/firmware/mmdvm_f4.bin -i ',-dtr,-rts,dtr,,:-dtr,rts,dtr' ${cfg.usb-tty}
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echo "{cfg.firmware_package}" > /var/lib/mmdvm/firmware-version
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fi
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exec ${cfg.package}/bin/MMDVMHost ${cfg.config-file}
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'';
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};
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};
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}
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