fix(bsp/gd32/arm): 修复gd32硬件i2c驱动

- 硬件i2c主机接收驱动采用方案B，但不支持接收小于3字节，现修复该问题
- 增加方案A。

bsp/gd32/arm/gd32405rg/.config

@@ -1440,22 +1440,16 @@ CONFIG_BSP_USING_UART0=y
 # CONFIG_BSP_USING_UART3 is not set
 # CONFIG_BSP_USING_UART4 is not set
 # CONFIG_BSP_USING_UART5 is not set
+CONFIG_BSP_USING_HARD_I2C=y
+CONFIG_BSP_USING_RECEIVING_A=y
+# CONFIG_BSP_USING_RECEIVING_B is not set
+CONFIG_BSP_USING_HARD_I2C0=y
+# CONFIG_BSP_USING_HARD_I2C1 is not set
+# CONFIG_BSP_USING_HARD_I2C2 is not set
 # CONFIG_BSP_USING_SPI is not set
 # CONFIG_BSP_USING_ADC is not set
 # CONFIG_BSP_USING_HWTIMER is not set
-CONFIG_BSP_USING_PWM=y
-CONFIG_BSP_USING_PWM0=y
-CONFIG_BSP_USING_PWM1=y
-CONFIG_BSP_USING_PWM2=y
-CONFIG_BSP_USING_PWM3=y
-CONFIG_BSP_USING_PWM4=y
-CONFIG_BSP_USING_PWM7=y
-CONFIG_BSP_USING_PWM8=y
-CONFIG_BSP_USING_PWM9=y
-CONFIG_BSP_USING_PWM10=y
-CONFIG_BSP_USING_PWM11=y
-CONFIG_BSP_USING_PWM12=y
-CONFIG_BSP_USING_PWM13=y
+# CONFIG_BSP_USING_PWM is not set
 # CONFIG_BSP_USING_ONCHIP_RTC is not set
 # CONFIG_BSP_USING_WDT is not set
 # CONFIG_BSP_USING_SDIO is not set

bsp/gd32/arm/gd32405rg/board/Kconfig

@@ -232,6 +232,35 @@ menu "On-chip Peripheral Drivers"
                 default 32
         endif
 
+    menuconfig BSP_USING_HARD_I2C
+        bool "Enable I2C"
+        select RT_USING_I2C
+        default n
+        if BSP_USING_HARD_I2C
+            choice
+                prompt "Select I2C Receiving Scheme"
+                default BSP_USING_RECEIVING_A
+
+                config BSP_USING_RECEIVING_A
+                    bool "master receiving secheme A --- requires that the software be capable of responding quickly to the 12C event."
+
+                config BSP_USING_RECEIVING_B
+                    bool "master receiving secheme B --- don't requires that the software be capable of responding quickly to the 12C event."
+            endchoice
+
+            config BSP_USING_HARD_I2C0
+                bool "enable hard I2C0"
+                default n
+
+            config BSP_USING_HARD_I2C1
+                bool "enable hard I2C1"
+                default n
+
+            config BSP_USING_HARD_I2C2
+                bool "enable hard I2C2"
+                default n
+        endif
+   
     menuconfig BSP_USING_SPI
         bool "Enable SPI BUS"
         default n

bsp/gd32/arm/gd32405rg/project.uvoptx

@@ -117,26 +117,6 @@
         <pMon>BIN\CMSIS_AGDI.dll</pMon>
       </DebugOpt>
       <TargetDriverDllRegistry>
-        <SetRegEntry>
-          <Number>0</Number>
-          <Key>ARMRTXEVENTFLAGS</Key>
-          <Name>-L70 -Z18 -C0 -M0 -T1</Name>
-        </SetRegEntry>
-        <SetRegEntry>
-          <Number>0</Number>
-          <Key>DLGTARM</Key>
-          <Name>(1010=-1,-1,-1,-1,0)(1007=-1,-1,-1,-1,0)(1008=-1,-1,-1,-1,0)(1009=-1,-1,-1,-1,0)(1012=-1,-1,-1,-1,0)</Name>
-        </SetRegEntry>
-        <SetRegEntry>
-          <Number>0</Number>
-          <Key>ARMDBGFLAGS</Key>
-          <Name></Name>
-        </SetRegEntry>
-        <SetRegEntry>
-          <Number>0</Number>
-          <Key>DLGUARM</Key>
-          <Name></Name>
-        </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
           <Key>CMSIS_AGDI</Key>
@@ -155,12 +135,12 @@
       <DebugFlag>
         <trace>0</trace>
         <periodic>0</periodic>
-        <aLwin>1</aLwin>
+        <aLwin>0</aLwin>
         <aCover>0</aCover>
         <aSer1>0</aSer1>
         <aSer2>0</aSer2>
         <aPa>0</aPa>
-        <viewmode>1</viewmode>
+        <viewmode>0</viewmode>
         <vrSel>0</vrSel>
         <aSym>0</aSym>
         <aTbox>0</aTbox>
@@ -191,16 +171,6 @@
       <pszMrulep></pszMrulep>
       <pSingCmdsp></pSingCmdsp>
       <pMultCmdsp></pMultCmdsp>
-      <SystemViewers>
-        <Entry>
-          <Name>System Viewer\TIMER1</Name>
-          <WinId>35905</WinId>
-        </Entry>
-        <Entry>
-          <Name>System Viewer\TIMER2</Name>
-          <WinId>35904</WinId>
-        </Entry>
-      </SystemViewers>
     </TargetOption>
   </Target>
 
@@ -577,6 +547,18 @@
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
+      <PathWithFileName>..\libraries\gd32_drivers\drv_hard_i2c.c</PathWithFileName>
+      <FilenameWithoutPath>drv_hard_i2c.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+    <File>
+      <GroupNumber>4</GroupNumber>
+      <FileNumber>30</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
       <PathWithFileName>..\libraries\gd32_drivers\drv_hwtimer.c</PathWithFileName>
       <FilenameWithoutPath>drv_hwtimer.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
@@ -584,7 +566,7 @@
     </File>
     <File>
       <GroupNumber>4</GroupNumber>
-      <FileNumber>30</FileNumber>
+      <FileNumber>31</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -596,7 +578,7 @@
     </File>
     <File>
       <GroupNumber>4</GroupNumber>
-      <FileNumber>31</FileNumber>
+      <FileNumber>32</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -616,49 +598,49 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>5</GroupNumber>
-      <FileNumber>32</FileNumber>
+      <FileNumber>33</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\components\finsh\msh_parse.c</PathWithFileName>
-      <FilenameWithoutPath>msh_parse.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\components\finsh\msh.c</PathWithFileName>
+      <FilenameWithoutPath>msh.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
     <File>
       <GroupNumber>5</GroupNumber>
-      <FileNumber>33</FileNumber>
+      <FileNumber>34</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\components\finsh\shell.c</PathWithFileName>
-      <FilenameWithoutPath>shell.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\components\finsh\cmd.c</PathWithFileName>
+      <FilenameWithoutPath>cmd.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
     <File>
       <GroupNumber>5</GroupNumber>
-      <FileNumber>34</FileNumber>
+      <FileNumber>35</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\components\finsh\msh.c</PathWithFileName>
-      <FilenameWithoutPath>msh.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\components\finsh\shell.c</PathWithFileName>
+      <FilenameWithoutPath>shell.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
     <File>
       <GroupNumber>5</GroupNumber>
-      <FileNumber>35</FileNumber>
+      <FileNumber>36</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\components\finsh\cmd.c</PathWithFileName>
-      <FilenameWithoutPath>cmd.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\components\finsh\msh_parse.c</PathWithFileName>
+      <FilenameWithoutPath>msh_parse.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
@@ -672,7 +654,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>36</FileNumber>
+      <FileNumber>37</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -684,7 +666,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>37</FileNumber>
+      <FileNumber>38</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -696,7 +678,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>38</FileNumber>
+      <FileNumber>39</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -708,7 +690,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>39</FileNumber>
+      <FileNumber>40</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -720,7 +702,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>40</FileNumber>
+      <FileNumber>41</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -732,7 +714,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>41</FileNumber>
+      <FileNumber>42</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -744,7 +726,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>42</FileNumber>
+      <FileNumber>43</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -756,7 +738,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>43</FileNumber>
+      <FileNumber>44</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -768,7 +750,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>44</FileNumber>
+      <FileNumber>45</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -780,7 +762,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>45</FileNumber>
+      <FileNumber>46</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -792,7 +774,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>46</FileNumber>
+      <FileNumber>47</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -804,7 +786,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>47</FileNumber>
+      <FileNumber>48</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -816,7 +798,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>48</FileNumber>
+      <FileNumber>49</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -828,7 +810,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>49</FileNumber>
+      <FileNumber>50</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -840,7 +822,7 @@
     </File>
     <File>
       <GroupNumber>6</GroupNumber>
-      <FileNumber>50</FileNumber>
+      <FileNumber>51</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -860,19 +842,19 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>51</FileNumber>
+      <FileNumber>52</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\src\klibc\kstring.c</PathWithFileName>
-      <FilenameWithoutPath>kstring.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\src\klibc\kerrno.c</PathWithFileName>
+      <FilenameWithoutPath>kerrno.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>52</FileNumber>
+      <FileNumber>53</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -884,19 +866,19 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>53</FileNumber>
+      <FileNumber>54</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
-      <PathWithFileName>..\..\..\..\src\klibc\kerrno.c</PathWithFileName>
-      <FilenameWithoutPath>kerrno.c</FilenameWithoutPath>
+      <PathWithFileName>..\..\..\..\src\klibc\kstring.c</PathWithFileName>
+      <FilenameWithoutPath>kstring.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>54</FileNumber>
+      <FileNumber>55</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -908,7 +890,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>55</FileNumber>
+      <FileNumber>56</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -928,7 +910,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>56</FileNumber>
+      <FileNumber>57</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -940,7 +922,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>57</FileNumber>
+      <FileNumber>58</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -952,7 +934,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>58</FileNumber>
+      <FileNumber>59</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -964,7 +946,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>59</FileNumber>
+      <FileNumber>60</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -976,7 +958,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>60</FileNumber>
+      <FileNumber>61</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -990,13 +972,13 @@
 
   <Group>
     <GroupName>Libraries</GroupName>
-    <tvExp>1</tvExp>
+    <tvExp>0</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>61</FileNumber>
+      <FileNumber>62</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1008,7 +990,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>62</FileNumber>
+      <FileNumber>63</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1020,7 +1002,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>63</FileNumber>
+      <FileNumber>64</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1032,7 +1014,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>64</FileNumber>
+      <FileNumber>65</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1044,7 +1026,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>65</FileNumber>
+      <FileNumber>66</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1056,7 +1038,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>66</FileNumber>
+      <FileNumber>67</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1068,7 +1050,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>67</FileNumber>
+      <FileNumber>68</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1080,7 +1062,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>68</FileNumber>
+      <FileNumber>69</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1092,7 +1074,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>69</FileNumber>
+      <FileNumber>70</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1104,7 +1086,7 @@
     </File>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>70</FileNumber>
+      <FileNumber>71</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1114,18 +1096,6 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
-    <File>
-      <GroupNumber>9</GroupNumber>
-      <FileNumber>71</FileNumber>
-      <FileType>1</FileType>
-      <tvExp>0</tvExp>
-      <tvExpOptDlg>0</tvExpOptDlg>
-      <bDave2>0</bDave2>
-      <PathWithFileName>.\packages\gd32-arm-series-latest\GD32F4xx\GD32F4xx_standard_peripheral\Source\gd32f4xx_timer.c</PathWithFileName>
-      <FilenameWithoutPath>gd32f4xx_timer.c</FilenameWithoutPath>
-      <RteFlg>0</RteFlg>
-      <bShared>0</bShared>
-    </File>
   </Group>
 
   <Group>

bsp/gd32/arm/gd32405rg/project.uvprojx

@@ -338,9 +338,9 @@
             <v6Rtti>0</v6Rtti>
             <VariousControls>
               <MiscControls></MiscControls>
-              <Define>RT_USING_LIBC, HXTAL_VALUE=8000000U, RT_USING_ARMLIBC, USE_STDPERIPH_DRIVER, __RTTHREAD__, __CLK_TCK=RT_TICK_PER_SECOND, GD32F405, __STDC_LIMIT_MACROS</Define>
+              <Define>RT_USING_LIBC, GD32F405, __RTTHREAD__, USE_STDPERIPH_DRIVER, __CLK_TCK=RT_TICK_PER_SECOND, RT_USING_ARMLIBC, __STDC_LIMIT_MACROS, HXTAL_VALUE=8000000U</Define>
               <Undefine></Undefine>
-              <IncludePath>packages\gd32-arm-cmsis-latest\GD32F4xx\GD\GD32F4xx\Include;packages\gd32-arm-cmsis-latest\GD32F4xx;.;..\..\..\..\components\drivers\include;..\..\..\..\components\libc\compilers\common\extension\fcntl\octal;..\..\..\..\components\drivers\smp_call;..\..\..\..\components\libc\posix\io\poll;..\..\..\..\components\net\utest;applications;..\..\..\..\components\libc\compilers\common\extension;..\..\..\..\components\libc\posix\io\epoll;..\..\..\..\components\libc\compilers\common\include;..\..\..\..\components\libc\posix\ipc;..\..\..\..\components\drivers\include;packages\gd32-arm-series-latest\GD32F4xx\GD32F4xx_standard_peripheral\Include;..\..\..\..\components\drivers\phy;..\..\..\..\components\drivers\include;..\..\..\..\components\drivers\include;board;..\..\..\..\libcpu\arm\cortex-m4;..\..\..\..\libcpu\arm\common;..\..\..\..\include;..\..\..\..\components\drivers\include;..\..\..\..\components\drivers\include;..\..\..\..\components\finsh;..\..\..\..\components\drivers\include;..\libraries\gd32_drivers;..\..\..\..\components\drivers\include;..\..\..\..\components\libc\posix\io\eventfd</IncludePath>
+              <IncludePath>applications;..\..\..\..\components\drivers\include;..\..\..\..\components\libc\compilers\common\extension\fcntl\octal;..\..\..\..\components\drivers\include;..\..\..\..\components\libc\posix\ipc;..\..\..\..\components\libc\posix\io\poll;..\..\..\..\components\libc\posix\io\eventfd;board;..\..\..\..\components\drivers\include;..\..\..\..\components\drivers\smp_call;..\..\..\..\libcpu\arm\common;..\..\..\..\components\drivers\include;..\..\..\..\libcpu\arm\cortex-m4;packages\gd32-arm-cmsis-latest\GD32F4xx\GD\GD32F4xx\Include;..\..\..\..\components\libc\posix\io\epoll;..\libraries\gd32_drivers;..\..\..\..\components\libc\compilers\common\extension;..\..\..\..\components\net\utest;..\..\..\..\components\drivers\phy;..\..\..\..\include;packages\gd32-arm-cmsis-latest\GD32F4xx;.;..\..\..\..\components\drivers\include;packages\gd32-arm-series-latest\GD32F4xx\GD32F4xx_standard_peripheral\Include;..\..\..\..\components\drivers\include;..\..\..\..\components\drivers\include;..\..\..\..\components\libc\compilers\common\include;..\..\..\..\components\finsh;..\..\..\..\components\drivers\include</IncludePath>
             </VariousControls>
           </Cads>
           <Aads>
@@ -1406,6 +1406,11 @@
               <FileType>1</FileType>
               <FilePath>..\libraries\gd32_drivers\drv_gpio.c</FilePath>
             </File>
+            <File>
+              <FileName>drv_hard_i2c.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\libraries\gd32_drivers\drv_hard_i2c.c</FilePath>
+            </File>
             <File>
               <FileName>drv_hwtimer.c</FileName>
               <FileType>1</FileType>
@@ -1427,24 +1432,24 @@
           <GroupName>Finsh</GroupName>
           <Files>
             <File>
-              <FileName>msh_parse.c</FileName>
+              <FileName>msh.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\components\finsh\msh_parse.c</FilePath>
+              <FilePath>..\..\..\..\components\finsh\msh.c</FilePath>
             </File>
             <File>
-              <FileName>shell.c</FileName>
+              <FileName>cmd.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\components\finsh\shell.c</FilePath>
+              <FilePath>..\..\..\..\components\finsh\cmd.c</FilePath>
             </File>
             <File>
-              <FileName>msh.c</FileName>
+              <FileName>shell.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\components\finsh\msh.c</FilePath>
+              <FilePath>..\..\..\..\components\finsh\shell.c</FilePath>
             </File>
             <File>
-              <FileName>cmd.c</FileName>
+              <FileName>msh_parse.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\components\finsh\cmd.c</FilePath>
+              <FilePath>..\..\..\..\components\finsh\msh_parse.c</FilePath>
             </File>
           </Files>
         </Group>
@@ -2297,9 +2302,9 @@
           <GroupName>klibc</GroupName>
           <Files>
             <File>
-              <FileName>kstring.c</FileName>
+              <FileName>kerrno.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\src\klibc\kstring.c</FilePath>
+              <FilePath>..\..\..\..\src\klibc\kerrno.c</FilePath>
             </File>
             <File>
               <FileName>rt_vsscanf.c</FileName>
@@ -2307,9 +2312,9 @@
               <FilePath>..\..\..\..\src\klibc\rt_vsscanf.c</FilePath>
             </File>
             <File>
-              <FileName>kerrno.c</FileName>
+              <FileName>kstring.c</FileName>
               <FileType>1</FileType>
-              <FilePath>..\..\..\..\src\klibc\kerrno.c</FilePath>
+              <FilePath>..\..\..\..\src\klibc\kstring.c</FilePath>
             </File>
             <File>
               <FileName>kstdio.c</FileName>
@@ -2406,11 +2411,6 @@
               <FileType>1</FileType>
               <FilePath>packages\gd32-arm-series-latest\GD32F4xx\GD32F4xx_standard_peripheral\Source\gd32f4xx_usart.c</FilePath>
             </File>
-            <File>
-              <FileName>gd32f4xx_timer.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>.\packages\gd32-arm-series-latest\GD32F4xx\GD32F4xx_standard_peripheral\Source\gd32f4xx_timer.c</FilePath>
-            </File>
           </Files>
         </Group>
         <Group>

bsp/gd32/arm/gd32405rg/rtconfig.h

@@ -422,19 +422,9 @@
 #define BSP_USING_GPIO
 #define BSP_USING_UART
 #define BSP_USING_UART0
-#define BSP_USING_PWM
-#define BSP_USING_PWM0
-#define BSP_USING_PWM1
-#define BSP_USING_PWM2
-#define BSP_USING_PWM3
-#define BSP_USING_PWM4
-#define BSP_USING_PWM7
-#define BSP_USING_PWM8
-#define BSP_USING_PWM9
-#define BSP_USING_PWM10
-#define BSP_USING_PWM11
-#define BSP_USING_PWM12
-#define BSP_USING_PWM13
+#define BSP_USING_HARD_I2C
+#define BSP_USING_RECEIVING_A
+#define BSP_USING_HARD_I2C0
 #define BSP_USING_GD_DBG
 /* end of On-chip Peripheral Drivers */
 

bsp/gd32/arm/libraries/gd32_drivers/drv_hard_i2c.c

@@ -6,6 +6,8 @@
  * Change Logs:
  * Date           Author            Notes
  * 2021-12-20     BruceOu           the first version
+ * 2026-01-11     ShiHongchao       Fix the I2C master receive mode B software 
+ *                                  flow and add support for mode A
  */
 
 #include "drv_hard_i2c.h"
@@ -112,8 +114,8 @@ static const struct gd32_i2c_bus gd_i2c_config[] = {
 
     RCU_I2C0, RCU_GPIOB, RCU_GPIOB,    /* periph clock, scl gpio clock, sda gpio clock */
 
-    GPIOB, GPIO_AF_4, GPIO_PIN_6,    /* scl port, scl alternate, scl pin */
-    GPIOB, GPIO_AF_4, GPIO_PIN_7,    /* sda port, sda alternate, sda pin */
+    GPIOB, GPIO_AF_4, GPIO_PIN_8,    /* scl port, scl alternate, scl pin */
+    GPIOB, GPIO_AF_4, GPIO_PIN_9,    /* sda port, sda alternate, sda pin */
 
         &i2c0,
         "hwi2c0",
@@ -229,13 +231,52 @@ static void gd32_i2c_gpio_init(const struct gd32_i2c_bus *i2c)
 static uint8_t gd32_i2c_read(rt_uint32_t i2c_periph, rt_uint8_t *p_buffer, rt_uint16_t data_byte)
 {
     if (data_byte == 0) return 1;
-    /* while there is data to be read */
 
+#ifdef BSP_USING_RECEIVING_A
+    /* 
+        In single-byte reception, disable ACK because the master needs to send 
+        NACK after receiving the first byte,indicating no more data will be 
+        received, then immediately send the stop condition
+    */
+    if(data_byte == 1)
+    {
+        /* disable acknowledge */
+        i2c_ack_config(i2c_periph, I2C_ACK_DISABLE);
+        /* send a stop condition to I2C bus */
+        i2c_stop_on_bus(i2c_periph);
+    }
+#endif
+    
+    /* while there is data to be read */
     while(data_byte)
     {
 #if defined (SOC_SERIES_GD32F5xx) || defined (SOC_SERIES_GD32F4xx)
         if(IS_I2C_LEGACY(i2c_periph))
         {
+#ifdef BSP_USING_RECEIVING_A
+            /* 
+                After receiving the second-to-last byte, ACK should be disabled 
+                and STOP should be set, to ensure that NACK is sent after receiving 
+                the last byte and the stop condition is transmitted
+            */
+            if(2 == data_byte)
+            {
+                    /* wait until BTC bit is set */
+                    while(!i2c_flag_get(i2c_periph, I2C_FLAG_RBNE));
+                    /* disable acknowledge */
+                    i2c_ack_config(i2c_periph, I2C_ACK_DISABLE);
+                    /* send a stop condition to I2C bus */
+                    i2c_stop_on_bus(i2c_periph);
+            }
+#elif defined(BSP_USING_RECEIVING_B)
+            /* 
+                For 3-byte reception: Wait for byte transfer completion, then 
+                disable ACK so NACK is automatically sent after receiving the 
+                last byte
+                For 2-byte reception: Wait for byte transfer completion, then 
+                send stop condition to ensure direct stop after receiving the 
+                last byte instead of sending ACK 
+            */
             if(3 == data_byte)
             {
                     /* wait until BTC bit is set */
@@ -243,14 +284,16 @@ static uint8_t gd32_i2c_read(rt_uint32_t i2c_periph, rt_uint8_t *p_buffer, rt_ui
                     /* disable acknowledge */
                     i2c_ack_config(i2c_periph, I2C_ACK_DISABLE);
             }
-
-            if(2 == data_byte)
+            else if(2 == data_byte)
             {
                     /* wait until BTC bit is set */
                     while(!i2c_flag_get(i2c_periph, I2C_FLAG_BTC));
                     /* send a stop condition to I2C bus */
                     i2c_stop_on_bus(i2c_periph);
             }
+#else
+#error "Please select the receiving secheme."
+#endif
             /* wait until RBNE bit is set */
             if(i2c_flag_get(i2c_periph, I2C_FLAG_RBNE))
             {
@@ -379,11 +422,18 @@ static rt_ssize_t gd32_i2c_master_xfer(struct rt_i2c_bus_device *bus, struct rt_
                     {
                             i2c_stop_on_bus(gd32_i2c->i2c_periph);
                     }
-                        /* enable acknowledge */
+                    /* enable acknowledge */
                     i2c_ack_config(gd32_i2c->i2c_periph, I2C_ACK_ENABLE);
-                        /* i2c master sends start signal only when the bus is idle */
+                    /* i2c master sends start signal only when the bus is idle */
                     while(i2c_flag_get(gd32_i2c->i2c_periph, I2C_FLAG_I2CBSY));
-                        /* send the start signal */
+#ifdef BSP_USING_RECEIVING_B
+                    /*  */
+                    if(msg->len == 2)
+                    {
+                        i2c_ackpos_config(gd32_i2c->i2c_periph, I2C_ACKPOS_NEXT);
+                    }
+#endif
+                    /* send the start signal */
                     i2c_start_on_bus(gd32_i2c->i2c_periph);
                      /* i2c master sends START signal successfully */
                     while(!i2c_flag_get(gd32_i2c->i2c_periph, I2C_FLAG_SBSEND));
@@ -391,14 +441,26 @@ static rt_ssize_t gd32_i2c_master_xfer(struct rt_i2c_bus_device *bus, struct rt_
                     i2c_master_addressing(gd32_i2c->i2c_periph, msg->addr, I2C_RECEIVER);
 
                     while(!i2c_flag_get(gd32_i2c->i2c_periph, I2C_FLAG_ADDSEND));
-                       /* address flag set means i2c slave sends ACK */
+#ifdef BSP_USING_RECEIVING_B
+                    if(msg->len <= 2)
+                    {
+                        i2c_ack_config(gd32_i2c->i2c_periph, I2C_ACK_DISABLE);
+                    }
+#endif
+                    /* address flag set means i2c slave sends ACK */
                     i2c_flag_clear(gd32_i2c->i2c_periph, I2C_FLAG_ADDSEND);
+#ifdef BSP_USING_RECEIVING_B
+                    if(msg->len == 1)
+                    {
+                        i2c_stop_on_bus(gd32_i2c->i2c_periph);
+                    }
+#endif
 
                }else {
-                     /* configure slave address */
+                    /* configure slave address */
                     while(i2c_flag_get(gd32_i2c->i2c_periph, I2C_FLAG_I2CBSY));
-                     //i2c_transfer_byte_number_config(gd32_i2c->i2c_periph, w_total_byte);
-                     /* send a start condition to I2C bus */
+                    //i2c_transfer_byte_number_config(gd32_i2c->i2c_periph, w_total_byte);
+                    /* send a start condition to I2C bus */
                     i2c_start_on_bus(gd32_i2c->i2c_periph);
                     while(!i2c_flag_get(gd32_i2c->i2c_periph, I2C_FLAG_SBSEND));