chelper: Move the host C code to a new klippy/chelper/ directory

Move the C code out of the main klippy/ directory and into its own
directory.  This reduces the clutter in the main klippy directory.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 0 insertions, 137 deletions

diff --git a/klippy/chelper.py b/klippy/chelper.py
deleted file mode 100644
index 7d950ab8..00000000
--- a/klippy/chelper.py
+++ /dev/null
@@ -1,137 +0,0 @@
-# Wrapper around C helper code
-#
-# Copyright (C) 2016,2017  Kevin O'Connor <kevin@koconnor.net>
-#
-# This file may be distributed under the terms of the GNU GPLv3 license.
-import os, logging
-import cffi
-
-
-######################################################################
-# c_helper.so compiling
-######################################################################
-
-COMPILE_CMD = "gcc -Wall -g -O2 -shared -fPIC -o %s %s"
-SOURCE_FILES = ['stepcompress.c', 'serialqueue.c', 'pyhelper.c']
-DEST_LIB = "c_helper.so"
-OTHER_FILES = ['list.h', 'serialqueue.h', 'pyhelper.h']
-
-defs_stepcompress = """
-    struct stepcompress *stepcompress_alloc(uint32_t max_error
-        , uint32_t queue_step_msgid, uint32_t set_next_step_dir_msgid
-        , uint32_t invert_sdir, uint32_t oid);
-    void stepcompress_free(struct stepcompress *sc);
-    int stepcompress_reset(struct stepcompress *sc, uint64_t last_step_clock);
-    int stepcompress_set_homing(struct stepcompress *sc, uint64_t homing_clock);
-    int stepcompress_queue_msg(struct stepcompress *sc, uint32_t *data, int len);
-
-    int32_t stepcompress_push(struct stepcompress *sc, double step_clock
-        , int32_t sdir);
-    int32_t stepcompress_push_const(struct stepcompress *sc, double clock_offset
-        , double step_offset, double steps, double start_sv, double accel);
-    int32_t stepcompress_push_delta(struct stepcompress *sc
-        , double clock_offset, double move_sd, double start_sv, double accel
-        , double height, double startxy_sd, double arm_d, double movez_r);
-
-    struct steppersync *steppersync_alloc(struct serialqueue *sq
-        , struct stepcompress **sc_list, int sc_num, int move_num);
-    void steppersync_free(struct steppersync *ss);
-    void steppersync_set_time(struct steppersync *ss
-        , double time_offset, double mcu_freq);
-    int steppersync_flush(struct steppersync *ss, uint64_t move_clock);
-"""
-
-defs_serialqueue = """
-    #define MESSAGE_MAX 64
-    struct pull_queue_message {
-        uint8_t msg[MESSAGE_MAX];
-        int len;
-        double sent_time, receive_time;
-    };
-
-    struct serialqueue *serialqueue_alloc(int serial_fd, int write_only);
-    void serialqueue_exit(struct serialqueue *sq);
-    void serialqueue_free(struct serialqueue *sq);
-    struct command_queue *serialqueue_alloc_commandqueue(void);
-    void serialqueue_free_commandqueue(struct command_queue *cq);
-    void serialqueue_send(struct serialqueue *sq, struct command_queue *cq
-        , uint8_t *msg, int len, uint64_t min_clock, uint64_t req_clock);
-    void serialqueue_encode_and_send(struct serialqueue *sq
-        , struct command_queue *cq, uint32_t *data, int len
-        , uint64_t min_clock, uint64_t req_clock);
-    void serialqueue_pull(struct serialqueue *sq, struct pull_queue_message *pqm);
-    void serialqueue_set_baud_adjust(struct serialqueue *sq, double baud_adjust);
-    void serialqueue_set_clock_est(struct serialqueue *sq, double est_freq
-        , double last_clock_time, uint64_t last_clock);
-    void serialqueue_get_stats(struct serialqueue *sq, char *buf, int len);
-    int serialqueue_extract_old(struct serialqueue *sq, int sentq
-        , struct pull_queue_message *q, int max);
-"""
-
-defs_pyhelper = """
-    void set_python_logging_callback(void (*func)(const char *));
-    double get_monotonic(void);
-"""
-
-# Return the list of file modification times
-def get_mtimes(srcdir, filelist):
-    out = []
-    for filename in filelist:
-        pathname = os.path.join(srcdir, filename)
-        try:
-            t = os.path.getmtime(pathname)
-        except os.error:
-            continue
-        out.append(t)
-    return out
-
-# Check if the code needs to be compiled
-def check_build_code(srcdir, target, sources, cmd, other_files=[]):
-    src_times = get_mtimes(srcdir, sources + other_files)
-    obj_times = get_mtimes(srcdir, [target])
-    if not obj_times or max(src_times) > min(obj_times):
-        logging.info("Building C code module %s", target)
-        srcfiles = [os.path.join(srcdir, fname) for fname in sources]
-        destlib = os.path.join(srcdir, target)
-        os.system(cmd % (destlib, ' '.join(srcfiles)))
-
-FFI_main = None
-FFI_lib = None
-pyhelper_logging_callback = None
-
-# Return the Foreign Function Interface api to the caller
-def get_ffi():
-    global FFI_main, FFI_lib, pyhelper_logging_callback
-    if FFI_lib is None:
-        srcdir = os.path.dirname(os.path.realpath(__file__))
-        check_build_code(srcdir, DEST_LIB, SOURCE_FILES, COMPILE_CMD
-                         , OTHER_FILES)
-        FFI_main = cffi.FFI()
-        FFI_main.cdef(defs_stepcompress)
-        FFI_main.cdef(defs_serialqueue)
-        FFI_main.cdef(defs_pyhelper)
-        FFI_lib = FFI_main.dlopen(os.path.join(srcdir, DEST_LIB))
-        # Setup error logging
-        def logging_callback(msg):
-            logging.error(FFI_main.string(msg))
-        pyhelper_logging_callback = FFI_main.callback(
-            "void(const char *)", logging_callback)
-        FFI_lib.set_python_logging_callback(pyhelper_logging_callback)
-    return FFI_main, FFI_lib
-
-
-######################################################################
-# hub-ctrl hub power controller
-######################################################################
-
-HC_COMPILE_CMD = "gcc -Wall -g -O2 -o %s %s -lusb"
-HC_SOURCE_FILES = ['hub-ctrl.c']
-HC_SOURCE_DIR = '../lib/hub-ctrl'
-HC_TARGET = "hub-ctrl"
-HC_CMD = "sudo %s/hub-ctrl -h 0 -P 2 -p %d"
-
-def run_hub_ctrl(enable_power):
-    srcdir = os.path.dirname(os.path.realpath(__file__))
-    hubdir = os.path.join(srcdir, HC_SOURCE_DIR)
-    check_build_code(hubdir, HC_TARGET, HC_SOURCE_FILES, HC_COMPILE_CMD)
-    os.system(HC_CMD % (hubdir, enable_power))