gpio写完，延时不准

2026-05-24 22:33:20 +08:00
parent 15fd21eba6
commit 42ceefc5ad
15 changed files with 1426 additions and 560 deletions
@@ -0,0 +1,93 @@
+/**
+ ******************************************************************************
+ * @file      syscalls.c
+ * @author    Suroy Wrote with Auto-generated by STM32CubeIDE 
+ * @url       https://suroy.cn
+ * @brief     STM32CubeIDE Minimal System calls file
+ *
+ *            For more information about which c-functions
+ *            need which of these lowlevel functions
+ *            please consult the Newlib libc-manual
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2020-2022 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+#ifdef defined (__GNUC__)
+/* Includes */
+#include "Bsp.h"
+
+
+/* Variables */
+extern int __io_putchar(int ch) __attribute__((weak));
+extern int __io_getchar(void) __attribute__((weak));
+
+
+
+/* Functions */
+
+__attribute__((weak)) int _read(int file, char *ptr, int len)
+{
+  (void)file;
+  int DataIdx;
+
+  for (DataIdx = 0; DataIdx < len; DataIdx++)
+  {
+    *ptr++ = __io_getchar();
+  }
+
+  return len;
+}
+
+__attribute__((weak)) int _write(int file, char *ptr, int len)
+{
+  (void)file;
+  int DataIdx;
+
+  for (DataIdx = 0; DataIdx < len; DataIdx++)
+  {
+    __io_putchar(*ptr++);
+  }
+  return len;
+}
+
+#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
+#define GETCHAR_PROTOTYPE int __io_getchar(void)
+
+/**
+  * 函数功能: 重定向 c库函数 printf到 DEBUG_USARTx
+  * 输入参数: 无
+  * 返 回 值: 无
+  * 说    明：无
+  */
+PUTCHAR_PROTOTYPE
+{
+  UsartSendChar(TTY_COM, ch); //阻塞式无限等待
+  return ch;
+}
+
+
+/**
+  * 函数功能: 重定向 c库函数 getchar,scanf到 DEBUG_USARTx
+  * 输入参数: 无
+  * 返 回 值: 无
+  * 说    明：无
+  */
+GETCHAR_PROTOTYPE
+{
+  uint8_t ch = 0;
+  ch = UsartReceiveChar(TTY_COM);
+    
+  return ch;
+}
+
+#endif
+
+