cargo embed doesn't like lpc1114 or tigard, just use openocd

flake.nix

@@ -57,7 +57,8 @@
           };
         in with pkgs;
         mkShell {
-          packages = [ rust cargo-binutils probe-rs cargo-generate gdb ];
+          packages =
+            [ rust cargo-binutils probe-rs cargo-generate gdb openocd ];
           RUST_SRC_PATH = "${rust}/lib/rustlib/src/rust/library";
         };
 

rust-embedded/lpc1114-test/.cargo/config.toml

@@ -1,5 +1,5 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-runner = "probe-rs run --chip Cortex-M0"
+runner = "gdb -x openocd.gdb"
 
 rustflags = [
   "-C", "link-arg=-Tlink.x",

rust-embedded/lpc1114-test/Embed.toml

@@ -1,82 +0,0 @@
-[default.probe]
-# USB vendor ID
-# usb_vid = "1337"
-# USB product ID
-# usb_pid = "1337"
-# Serial number
-# serial = "12345678"
-# The protocol to be used for communicating with the target.
-protocol = "Swd"
-# The speed in kHz of the data link to the target.
-# speed = 1337
-
-[default.flashing]
-# Whether or not the target should be flashed.
-enabled = true
-# Whether or not the target should be halted after reset.
-# DEPRECATED, moved to reset section
-halt_afterwards = false
-# Whether or not bytes erased but not rewritten with data from the ELF
-# should be restored with their contents before erasing.
-restore_unwritten_bytes = false
-# The path where an SVG of the assembled flash layout should be written to.
-# flash_layout_output_path = "out.svg"
-# Triggers a full chip erase instead of a page by page erase.
-do_chip_erase = false
-
-[default.reset]
-# Whether or not the target should be reset.
-# When flashing is enabled as well, the target will be reset after flashing.
-enabled = true
-# Whether or not the target should be halted after reset.
-halt_afterwards = false
-
-[default.general]
-# The chip name of the chip to be debugged.
-chip = "Cortex-M0"
-# A list of chip descriptions to be loaded during runtime.
-chip_descriptions = []
-# The default log level to be used. Possible values are one of:
-#   "OFF", "ERROR", "WARN", "INFO", "DEBUG", "TRACE"
-log_level = "WARN"
-# Use this flag to assert the nreset & ntrst pins during attaching the probe to the chip.
-connect_under_reset = false
-
-[default.rtt]
-# Whether or not an RTTUI should be opened after flashing.
-enabled = false
-# How the target handles RTT outputs that won't fit in the buffer.  This can be
-# overridden per-channel. If left unset, the firmware will determine the default
-# for each RTT up channel.
-#   NoBlockSkip - Skip writing the data completely if it doesn't fit in its
-#                 entirety.
-#   NoBlockTrim - Write as much as possible of the data and ignore the rest.
-#   BlockIfFull - Spin until the host reads data.  Can result in app freezing.
-#
-# up_mode = "BlockIfFull"
-
-# A list of channel associations to be displayed. If left empty, all channels are displayed.
-# up, down (Optional) - RTT channel numbers
-# name     (Optional) - String to be displayed in the RTTUI tab
-# up_mode  (Optional) - RTT channel specific as described above
-# format   (Required) - How to interpret data from target firmware.  One of:
-#              String - Directly show output from the target 
-#              Defmt  - Format output on the host, see https://defmt.ferrous-systems.com/
-#              BinaryLE - Display as raw hex
-channels = [
-    # { up = 0, down = 0, name = "name", up_mode = "BlockIfFull", format = "Defmt" },
-]
-# The duration in ms for which the logger should retry to attach to RTT.
-timeout = 3000
-# Whether timestamps in the RTTUI are enabled
-show_timestamps = true
-# Whether to save rtt history buffer on exit.
-log_enabled = false
-# Where to save rtt history buffer relative to manifest path.
-log_path = "./logs"
-
-[default.gdb]
-# Whether or not a GDB server should be opened after flashing.
-enabled = false
-# The connection string in host:port format wher the GDB server will open a socket.
-gdb_connection_string = "127.0.0.1:1337"

rust-embedded/lpc1114-test/openocd.cfg

@@ -0,0 +1,6 @@
+source [find interface/ftdi/tigard.cfg]
+source [find interface/ftdi/swd-resistor-hack.cfg]
+source [find target/lpc11xx.cfg]
+
+adapter speed 2000
+adapter_khz 13500

rust-embedded/lpc1114-test/openocd.gdb

@@ -0,0 +1,14 @@
+target extended-remote :3333
+
+# print demangled symbols
+set print asm-demangle on
+
+# detect unhandled exceptions, hard faults and panics
+break DefaultHandler
+break HardFault
+break rust_begin_unwind
+
+monitor arm semihosting enable
+
+load
+monitor reset