Update SDK #176

Update board's SDK.

Also, CH32X035 doesn't seem to support manually config open-drain mode. (GPIO will be open-drain in I2C connection automatically.)

#if !defined(CH32X035)
          case CH_CNF_OUTPUT_OD:
               GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
               break;
#endif
          case CH_CNF_OUTPUT_AFPP:
               GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
               break;
#if !defined(CH32X035)
          case CH_CNF_OUTPUT_AFOD:
               GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
               break; 
#endif
And AFIO_Remap_SWJ_NONJTRST and AFIO_Remap_SWJ_NOJTAG were removed from variants\CH32V20x\PinAF_CH32V20x.h because they don't exist.

-   AFIO_Remap_SWJ_NONJTRST,
-   AFIO_Remap_SWJ_NOJTAG,
-
-   case AFIO_Remap_SWJ_NONJTRST: 
-     GPIO_PinRemapConfig(GPIO_Remap_SWJ_NoJTRST,ENABLE);
-     break;
-   case AFIO_Remap_SWJ_NOJTAG: 
-     GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
-     break;
Update SDK log
Copy from official SDK
Disable _write in debug.c.
/*********************************************************************
 * @fn      _write
 *
 * @brief   Support Printf Function
 *
 * @param   *buf - UART send Data.
 *          size - Data length.
 *
 * @return  size - Data length
 */
+ #if 0
__attribute__((used)) 
int _write(int fd, char *buf, int size)
{
    
}
+ #endif
Add _fini and _init in end of debug.c.
+ void _fini() {}
+ void _init() {}
Comment out #define SYSCLK_FREQ_XXXX in system_ch32xxxx.c.
Debug
Memo (SDK's bug)
In ch32l103_usb.h
#ifdef __cplusplus
extern "C" {
#endif

- #ifdef __cplusplus
- extern "C" {
- #endif
In ch32v10x_misc.h
+ #ifdef __cplusplus
+ }
+ #endif
Some boards use MHZ instead for MHz in system_ch32xxxx.c.

Author: jobitjoseph

variants/CH32V20x/PinAF_CH32V20x.h

@@ -102,8 +102,6 @@ enum {
   AFIO_Remap_ADC2_ETRGREG_ENABLE,
   AFIO_Remap_ADC2_ETRGREG_DISABLE,
 
-  AFIO_Remap_SWJ_NONJTRST,
-  AFIO_Remap_SWJ_NOJTAG,
   AFIO_Remap_SWJ_DISABLE,
 
   AFIO_Remap_SPI3_ENABLE,
@@ -314,12 +312,6 @@ static inline void pin_SetV32AFPin(uint32_t afnum)
       GPIO_PinRemapConfig(GPIO_Remap_ADC2_ETRGREG,DISABLE);
       break;
 
-    case AFIO_Remap_SWJ_NONJTRST: 
-      GPIO_PinRemapConfig(GPIO_Remap_SWJ_NoJTRST,ENABLE);
-      break;
-    case AFIO_Remap_SWJ_NOJTAG: 
-      GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
-      break;
     case AFIO_Remap_SWJ_DISABLE: 
       GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable,ENABLE);
       break;