1 files changed, 87 insertions, 0 deletions
diff --git a/scripts/spi_flash/fatfs_lib.py b/scripts/spi_flash/fatfs_lib.py
new file mode 100644
index 00000000..5894bb52
--- /dev/null
+++ b/scripts/spi_flash/fatfs_lib.py
@@ -0,0 +1,87 @@
+# FatFS CFFI support
+#
+# Copyright (C) 2021 Eric Callahan <arksine.code@gmail.com>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+import os
+import sys
+KLIPPER_DIR = os.path.abspath(os.path.join(
+    os.path.dirname(__file__), "../../"))
+sys.path.append(os.path.join(KLIPPER_DIR, "klippy"))
+import chelper
+
+DEST_LIB = "fatfs.so"
+FATFS_DIR = os.path.join(KLIPPER_DIR, "lib/fatfs")
+FATFS_SRC = ["ff.c", "ffsystem.c", "ffunicode.c"]
+SPI_FLASH_SRC = ["fatfs_api.c"]
+FATFS_HEADERS = ["diskio.h", "ff.h", "ffconf.h"]
+SPI_FLASH_HEADERS = ["fatfs_api.h"]
+
+FATFS_CDEFS = """
+    void fatfs_set_callbacks(
+        uint8_t (*status_callback)(void),
+        uint8_t (*init_callback)(void),
+        uint8_t (*read_callback)(uint8_t*, uint32_t, unsigned int),
+        uint8_t (*write_callback)(const uint8_t*, uint32_t, unsigned int),
+        uint8_t (*ioctl_callback)(uint8_t, void*),
+        uint32_t (*fattime_callback)(void));
+    void fatfs_clear_callbacks(void);
+
+    struct ff_file_info {
+        uint32_t size;
+        uint16_t modified_date;
+        uint16_t modified_time;
+        uint8_t  attrs;
+        char     name[13];
+    };
+
+    struct ff_disk_info {
+        char     label[12];
+        uint32_t serial_number;
+        uint8_t  fs_type;
+    };
+
+    uint8_t fatfs_mount(void);
+    uint8_t fatfs_unmount(void);
+    struct ff_file* fatfs_open(const char* path, uint8_t mode);
+    uint8_t fatfs_close(struct ff_file* fhdl);
+    int fatfs_read(struct ff_file* fhdl, void* rbuf, uint16_t btr);
+    int fatfs_write(struct ff_file* fhdl, const void* wbuf, uint16_t btw);
+    uint8_t fatfs_remove(const char* path);
+    uint8_t fatfs_get_fstats(struct ff_file_info* finfo, const char* path);
+    uint8_t fatfs_get_disk_info(struct ff_disk_info* dinfo);
+    uint8_t fatfs_list_dir(struct ff_file_info* flist, uint8_t max_size,
+                        char* path);
+"""
+
+fatfs_ffi_main = None
+fatfs_ffi_lib = None
+
+def check_fatfs_build(printfunc=lambda o: o):
+    printfunc("Checking FatFS CFFI Build...\n")
+    ffi_main, ffi_lib = chelper.get_ffi()
+    srcdir = os.path.dirname(os.path.realpath(__file__))
+    srcfiles = chelper.get_abs_files(FATFS_DIR, FATFS_SRC)
+    srcfiles.extend(chelper.get_abs_files(srcdir, SPI_FLASH_SRC))
+    ofiles = chelper.get_abs_files(FATFS_DIR, FATFS_HEADERS)
+    ofiles.extend(chelper.get_abs_files(srcdir, SPI_FLASH_HEADERS))
+    destlib = os.path.join(srcdir, DEST_LIB)
+    if chelper.check_build_code(srcfiles+ofiles+[__file__], destlib):
+        if chelper.check_gcc_option(chelper.SSE_FLAGS):
+            cmd = "%s %s %s" % (chelper.GCC_CMD, chelper.SSE_FLAGS,
+                                chelper.COMPILE_ARGS)
+        else:
+            cmd = "%s %s" % (chelper.GCC_CMD, chelper.COMPILE_ARGS)
+        printfunc("Building FatFS shared library...")
+        os.system(cmd % (destlib, ' '.join(srcfiles)))
+        printfunc("Done\n")
+    global fatfs_ffi_main, fatfs_ffi_lib
+    ffi_main.cdef(FATFS_CDEFS)
+    fatfs_ffi_lib = ffi_main.dlopen(destlib)
+    fatfs_ffi_main = ffi_main
+
+def get_fatfs_ffi():
+    global fatfs_ffi_main, fatfs_ffi_lib
+    if fatfs_ffi_main is None:
+        check_fatfs_build()
+    return fatfs_ffi_main, fatfs_ffi_lib