I'm trying to port GRBL 1.1 to the STM32F746 chip. Tell me the solution, thanks.

Revision:
0:9dcf85d9b2f3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32grbl11.coproj	Mon Sep 04 12:05:05 2017 +0000
@@ -0,0 +1,186 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<Project version="2G - 2.0.6" name="stm32grbl">
+  <Target name="stm32grbl" isCurrent="1">
+    <Device manufacturerId="9" manufacturerName="ST" chipId="599" chipName="STM32F103C8T6" boardId="" boardName="" boardUrl="" coreId="" coreName=""/>
+    <BuildOption>
+      <Compile>
+        <Option name="OptimizationLevel" value="4"/>
+        <Option name="UseFPU" value="0"/>
+        <Option name="UserEditCompiler" value="-ffunction-sections;"/>
+        <Option name="SupportCPlusplus" value="0"/>
+        <Option name="DEBUG" value="0"/>
+        <Option name="WARNING" value="0"/>
+        <Includepaths>
+          <Includepath path="."/>
+          <Includepath path="usb"/>
+          <Includepath path="util"/>
+          <Includepath path="useusb"/>
+          <Includepath path="grbl"/>
+        </Includepaths>
+        <DefinedSymbols>
+          <Define name="USE_STDPERIPH_DRIVER"/>
+          <Define name="__ASSEMBLY__"/>
+          <Define name="_GRBL_"/>
+          <Define name="STM32F103C8T6"/>
+          <Define name="STM32F10X_MD"/>
+          <Define name="LEDBLINK"/>
+          <Define name="USEUSB"/>
+          <Define name="STM32F103C8"/>
+        </DefinedSymbols>
+      </Compile>
+      <Link useDefault="0">
+        <Option name="DiscardUnusedSection" value="0"/>
+        <Option name="UserEditLinkder" value=""/>
+        <Option name="UseMemoryLayout" value="1"/>
+        <Option name="nostartfiles" value="1"/>
+        <Option name="LTO" value="0"/>
+        <Option name="IsNewStartupCode" value="1"/>
+        <Option name="Library" value="Not use C Library"/>
+        <Option name="UserEditLinker" value=""/>
+        <LinkedLibraries>
+          <Libset dir="" libs="m"/>
+        </LinkedLibraries>
+        <MemoryAreas debugInFlashNotRAM="1">
+          <Memory name="IROM1" type="ReadOnly" size="0x00020000" startValue="0x08000000"/>
+          <Memory name="IRAM1" type="ReadWrite" size="0x00005000" startValue="0x20000000"/>
+          <Memory name="IROM2" type="ReadOnly" size="" startValue=""/>
+          <Memory name="IRAM2" type="ReadWrite" size="" startValue=""/>
+        </MemoryAreas>
+        <LocateLinkFile path="c:/users/li shao/appdata/roaming/coocox/coide/configuration/programdata/stm32grbl/arm-gcc-link.ld" type="0"/>
+      </Link>
+      <Output>
+        <Option name="OutputFileType" value="0"/>
+        <Option name="Path" value="../../buildoutput/grbl11e/"/>
+        <Option name="Name" value="stm32grbl"/>
+        <Option name="HEX" value="1"/>
+        <Option name="BIN" value="1"/>
+      </Output>
+      <User>
+        <UserRun name="Run#1" type="Before" checked="0" value=""/>
+        <UserRun name="Run#1" type="After" checked="0" value=""/>
+      </User>
+    </BuildOption>
+    <DebugOption>
+      <Option name="org.coocox.codebugger.gdbjtag.core.adapter" value="ST-Link"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.debugMode" value="SWD"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.clockDiv" value="2M"/>
+      <Option name="org.coocox.codebugger.gdbjtag.corerunToMain" value="1"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.jlinkgdbserver" value=""/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.userDefineGDBScript" value=""/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.targetEndianess" value="0"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.jlinkResetMode" value="Type 0: Normal"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.resetMode" value="SYSRESETREQ"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.ifSemihost" value="0"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.ifCacheRom" value="1"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.ipAddress" value="127.0.0.1"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.portNumber" value="2009"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.autoDownload" value="1"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.verify" value="1"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.downloadFuction" value="Erase Effected"/>
+      <Option name="org.coocox.codebugger.gdbjtag.core.defaultAlgorithm" value="d:/coocox/coide/flash/stm32f10x_md_64.elf;"/>
+      <Option name="org.coocox.codebugger.gdbjtag.coredebugInRamInitCommands" value="cd j:/buildoutput/stm3211/stm32grbl/Debug/bin restore stm32grbl.elf set {unsigned int*}0xE000ED08 = 0x20000000 set $sp = {unsigned int*}0x20000000 set $pc = {unsigned int*}0x20000004 "/>
+    </DebugOption>
+    <ExcludeFile/>
+  </Target>
+  <Components path="./"/>
+  <LocalComponents/>
+  <Files>
+    <File name="stm_usb_fs_lib/inc/usb_init.h" path="stm_usb_fs_lib/inc/usb_init.h" type="1"/>
+    <File name="grbl/inc/probe.h" path="grbl/probe.h" type="1"/>
+    <File name="grbl" path="" type="2"/>
+    <File name="stm_usb_fs_lib/src" path="" type="2"/>
+    <File name="usb/usb_desc.c" path="usb/usb_desc.c" type="1"/>
+    <File name="grbl/src/stepper.c" path="grbl/stepper.c" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_core.h" path="stm_usb_fs_lib/inc/usb_core.h" type="1"/>
+    <File name="cmsis_boot" path="" type="2"/>
+    <File name="usb/hw_config.c" path="usb/hw_config.c" type="1"/>
+    <File name="grbl/inc/eeprom.h" path="grbl/eeprom.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_mem.h" path="stm_usb_fs_lib/inc/usb_mem.h" type="1"/>
+    <File name="grbl/inc/print.h" path="grbl/print.h" type="1"/>
+    <File name="stm_lib/src/stm32f10x_tim.c" path="stm_lib/src/stm32f10x_tim.c" type="1"/>
+    <File name="cmsis_boot/startup" path="" type="2"/>
+    <File name="stm_usb_fs_lib/inc/usb_regs.h" path="stm_usb_fs_lib/inc/usb_regs.h" type="1"/>
+    <File name="cmsis/core_cmFunc.h" path="cmsis/core_cmFunc.h" type="1"/>
+    <File name="grbl/inc/system.h" path="grbl/system.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_int.h" path="stm_usb_fs_lib/inc/usb_int.h" type="1"/>
+    <File name="stm_lib/src/misc.c" path="stm_lib/src/misc.c" type="1"/>
+    <File name="grbl/src/jog.c" path="grbl/jog.c" type="1"/>
+    <File name="cmsis_boot/stm32f10x.h" path="cmsis_boot/stm32f10x.h" type="1"/>
+    <File name="grbl/src/coolant_control.c" path="grbl/coolant_control.c" type="1"/>
+    <File name="cmsis_boot/stm32f10x_conf.h" path="cmsis_boot/stm32f10x_conf.h" type="1"/>
+    <File name="grbl/src/limits.c" path="grbl/limits.c" type="1"/>
+    <File name="grbl/src/serial.c" path="grbl/serial.c" type="1"/>
+    <File name="grbl/src/protocol.c" path="grbl/protocol.c" type="1"/>
+    <File name="stm_usb_fs_lib/src/usb_mem.c" path="stm_usb_fs_lib/src/usb_mem.c" type="1"/>
+    <File name="stm_lib/inc/stm32f10x_spi.h" path="stm_lib/inc/stm32f10x_spi.h" type="1"/>
+    <File name="usb" path="" type="2"/>
+    <File name="grbl/src/probe.c" path="grbl/probe.c" type="1"/>
+    <File name="grbl/inc/planner.h" path="grbl/planner.h" type="1"/>
+    <File name="grbl/inc/stepper.h" path="grbl/stepper.h" type="1"/>
+    <File name="stm_lib/src/stm32f10x_usart.c" path="stm_lib/src/stm32f10x_usart.c" type="1"/>
+    <File name="stm_usb_fs_lib/src/usb_sil.c" path="stm_usb_fs_lib/src/usb_sil.c" type="1"/>
+    <File name="grbl/inc/spindle_control.h" path="grbl/spindle_control.h" type="1"/>
+    <File name="grbl/src/nuts_bolts.c" path="grbl/nuts_bolts.c" type="1"/>
+    <File name="cmsis_boot/startup/startup_stm32f10x_md.c" path="cmsis_boot/startup/startup_stm32f10x_md.c" type="1"/>
+    <File name="stm_lib/src/stm32f10x_gpio.c" path="stm_lib/src/stm32f10x_gpio.c" type="1"/>
+    <File name="stm_lib/inc/stm32f10x_gpio.h" path="stm_lib/inc/stm32f10x_gpio.h" type="1"/>
+    <File name="stm_lib/inc/stm32f10x_usart.h" path="stm_lib/inc/stm32f10x_usart.h" type="1"/>
+    <File name="grbl/inc/report.h" path="grbl/report.h" type="1"/>
+    <File name="grbl/inc/config.h" path="grbl/config.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_sil.h" path="stm_usb_fs_lib/inc/usb_sil.h" type="1"/>
+    <File name="cmsis_boot/system_stm32f10x.c" path="cmsis_boot/system_stm32f10x.c" type="1"/>
+    <File name="stm_lib/inc/misc.h" path="stm_lib/inc/misc.h" type="1"/>
+    <File name="stm_usb_fs_lib/src/usb_int.c" path="stm_usb_fs_lib/src/usb_int.c" type="1"/>
+    <File name="grbl/inc/gcode.h" path="grbl/gcode.h" type="1"/>
+    <File name="cmsis/core_cmInstr.h" path="cmsis/core_cmInstr.h" type="1"/>
+    <File name="util" path="" type="2"/>
+    <File name="grbl/src/spindle_control.c" path="grbl/spindle_control.c" type="1"/>
+    <File name="stm_usb_fs_lib" path="" type="2"/>
+    <File name="cmsis/core_cm3.h" path="cmsis/core_cm3.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc" path="" type="2"/>
+    <File name="grbl/src/sleep.c" path="grbl/sleep.c" type="1"/>
+    <File name="stm_lib/src/stm32f10x_exti.c" path="stm_lib/src/stm32f10x_exti.c" type="1"/>
+    <File name="stm_usb_fs_lib/src/usb_init.c" path="stm_usb_fs_lib/src/usb_init.c" type="1"/>
+    <File name="usb/usb_pwr.c" path="usb/usb_pwr.c" type="1"/>
+    <File name="stm_usb_fs_lib/src/usb_core.c" path="stm_usb_fs_lib/src/usb_core.c" type="1"/>
+    <File name="stm_lib/src/stm32f10x_rcc.c" path="stm_lib/src/stm32f10x_rcc.c" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_conf.h" path="stm_usb_fs_lib/inc/usb_conf.h" type="1"/>
+    <File name="grbl/src/gcode.c" path="grbl/gcode.c" type="1"/>
+    <File name="grbl/inc/limits.h" path="grbl/limits.h" type="1"/>
+    <File name="grbl/inc/serial.h" path="grbl/serial.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_def.h" path="stm_usb_fs_lib/inc/usb_def.h" type="1"/>
+    <File name="grbl/src/eeprom.c" path="grbl/eeprom.c" type="1"/>
+    <File name="usb/usb_prop.c" path="usb/usb_prop.c" type="1"/>
+    <File name="grbl/inc/coolant_control.h" path="grbl/coolant_control.h" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_type.h" path="stm_usb_fs_lib/inc/usb_type.h" type="1"/>
+    <File name="grbl/inc/protocol.h" path="grbl/protocol.h" type="1"/>
+    <File name="grbl/src" path="" type="2"/>
+    <File name="usb/usb_istr.c" path="usb/usb_istr.c" type="1"/>
+    <File name="stm_lib/src" path="" type="2"/>
+    <File name="grbl/inc/motion_control.h" path="grbl/motion_control.h" type="1"/>
+    <File name="cmsis" path="" type="2"/>
+    <File name="stm_lib" path="" type="2"/>
+    <File name="grbl/src/planner.c" path="grbl/planner.c" type="1"/>
+    <File name="stm_lib/inc/stm32f10x_exti.h" path="stm_lib/inc/stm32f10x_exti.h" type="1"/>
+    <File name="stm_lib/src/stm32f10x_flash.c" path="stm_lib/src/stm32f10x_flash.c" type="1"/>
+    <File name="grbl/src/print.c" path="grbl/print.c" type="1"/>
+    <File name="usb/usb_endp.c" path="usb/usb_endp.c" type="1"/>
+    <File name="cmsis_boot/system_stm32f10x.h" path="cmsis_boot/system_stm32f10x.h" type="1"/>
+    <File name="stm_lib/inc/stm32f10x_rcc.h" path="stm_lib/inc/stm32f10x_rcc.h" type="1"/>
+    <File name="grbl/inc" path="" type="2"/>
+    <File name="stm_usb_fs_lib/src/usb_regs.c" path="stm_usb_fs_lib/src/usb_regs.c" type="1"/>
+    <File name="stm_usb_fs_lib/inc/usb_lib.h" path="stm_usb_fs_lib/inc/usb_lib.h" type="1"/>
+    <File name="grbl/inc/nuts_bolts.h" path="grbl/nuts_bolts.h" type="1"/>
+    <File name="grbl/inc/jog.h" path="grbl/jog.h" type="1"/>
+    <File name="grbl/src/settings.c" path="grbl/settings.c" type="1"/>
+    <File name="util/stm32f10x_it.c" path="util/stm32f10x_it.c" type="1"/>
+    <File name="grbl/src/report.c" path="grbl/report.c" type="1"/>
+    <File name="grbl/src/system.c" path="grbl/system.c" type="1"/>
+    <File name="grbl/inc/settings.h" path="grbl/settings.h" type="1"/>
+    <File name="stm_lib/inc" path="" type="2"/>
+    <File name="grbl/src/motion_control.c" path="grbl/motion_control.c" type="1"/>
+    <File name="grbl/inc/grbl.h" path="grbl/grbl.h" type="1"/>
+    <File name="main.c" path="grbl/main.c" type="1"/>
+  </Files>
+  <Bookmarks/>
+</Project>
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