第一版代码，为了在EEPROM保存参数的时候走STM32的CRC，让Codex修改了一下，现在的效果是无法存储，codex表示原因是CRC方法不同，修改到一半今天的额度使用完了，有待后续解决CRC的bug

2026-02-28 17:36:05 +08:00
commit b2fedd58b2
212 changed files with 208290 additions and 0 deletions
--- a/MyDriver/DWT.c
+++ b/MyDriver/DWT.c
@@ -0,0 +1,61 @@
+#include "DWT.h"
+
+// 寄存器基地址
+#define DWT_CR (*(uint32_t *)0xE0001000)
+#define DWT_CYCCNT (*(uint32_t *)0xE0001004)
+#define DEM_CR (*(uint32_t *)0xE000EDFC)
+
+// 定义需使能位
+#define DEM_CR_TRCENA (1 << 24)
+#define DWT_CR_CYCCNTENA (1 << 0)
+
+// DWT init
+void DWT_init(void)
+{
+    DEM_CR |= (uint32_t)DEM_CR_TRCENA;
+    DWT_CYCCNT = (uint32_t)0u;
+    DWT_CR |= (uint32_t)DWT_CR_CYCCNTENA;
+}
+// get DWT count
+uint32_t DWT_TS_GET(void)
+{
+    return ((uint32_t)DWT_CYCCNT);
+}
+
+// 使用DWT延时time_us微秒
+void DWT_delay_us(uint32_t time_us)
+{
+    uint32_t old_counter, current_counter;
+    uint32_t delay_us;
+
+    old_counter = DWT_TS_GET();
+    current_counter = DWT_TS_GET();
+    delay_us = 0;
+    while (delay_us < time_us)
+    {
+        current_counter = DWT_TS_GET();
+        if (current_counter > old_counter)
+            delay_us = (current_counter - old_counter) / (SystemCoreClock / 1000000);
+        else
+            delay_us = (current_counter + 0XFFFFFFFF - old_counter) / (SystemCoreClock / 1000000);
+    }
+}
+
+// 使用DWT延时time_ms毫秒
+void DWT_delay_ms(uint32_t time_ms)
+{
+    uint32_t old_counter, current_counter;
+    uint32_t delay_ms;
+
+    old_counter = DWT_TS_GET();
+    current_counter = DWT_TS_GET();
+    delay_ms = 0;
+    while (delay_ms < time_ms)
+    {
+        current_counter = DWT_TS_GET();
+        if (current_counter > old_counter)
+            delay_ms = (current_counter - old_counter) / (SystemCoreClock / 1000);
+        else
+            delay_ms = (current_counter + 0XFFFFFFFF - old_counter) / (SystemCoreClock / 1000);
+    }
+}