Stair56E UART project

2026-08-05 19:07:52 +08:00
parent 7ca1af130d
commit f5654b70cc
2500 changed files with 619007 additions and 282610 deletions
@@ -0,0 +1,114 @@
+/**
+ * Initialize the system
+ *
+ * @param  none
+ * @return none
+ *
+ * @brief  Setup the microcontroller system
+ *
+ */
+
+/*-----------------------------------------------------------------------------------
+                                       INCLUDE HEADE FILES
+ ------------------------------------------------------------------------------------*/
+#include <stdio.h>
+
+#include "xc6xxx.h"
+
+/*------------------------------------------------------------------------------------
+                                             Macros
+ -------------------------------------------------------------------------------------*/
+#define __DEBUG_OUT_PORT 0
+
+/*------------------------------------------------------------------------------------
+                                            Functions
+ -------------------------------------------------------------------------------------*/
+#define VECTOR_NUM 48
+
+void set_vector(void)
+{
+#if (USE_XIP == 1)
+    __disable_irq();
+    for (uint32_t i = 0, *Pvector = (uint32_t *)(0x11001000 + 0),
+                  *_vector_table = (uint32_t *)(0x10000000);
+         i < VECTOR_NUM; i++) // copy vertor table
+    {
+        _vector_table[i] = *Pvector++;
+    }
+
+    *((volatile unsigned int *)(0x4000013C)) =
+        0x10000001; // inter vertor table remap
+    __enable_irq();
+#endif
+}
+
+static void WDT_ResetInit(void)
+{
+    cpr_ctlapbclken_grctl__wdt_pclk_en__setf(ENABLE);
+
+    cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_ENABLE);
+    cpr_rstctl_ctlapb_sw__wdt_rstn__setf(RSTCTL_DISABLE);
+
+    cpr_rstctl_wdtrst_mask_set(
+        (WDT_SYS_RSTN_MASK_DISABLE | WDT_M0_RSTN_MASK_ENABLE));
+
+    cpr_lp_ctl__ctl_wdt_tclk_en__setf(ENABLE);
+    wdt_cr__wdt_en__setf(DISABLE);
+}
+
+void SystemInit(void)
+{
+
+    WDT_ResetInit();
+
+#if (USE_XIP == 1)
+
+    set_vector();
+#endif
+}
+
+__RAM_CODE int sendchar(int c)
+{
+    unsigned int status;
+#if (__DEBUG_OUT_PORT == 1)
+    for (;;) {
+        status  = (*((volatile unsigned *)(0x40011000 + 0x14)));
+        status &= 0x20;
+        if (status == 0x20)
+            break;
+    }
+    (*((volatile unsigned *)(0x40011000 + 0x00))) = c;
+    return (1);
+#else
+    for (;;) {
+        status  = (*((volatile unsigned *)(0x40010000 + 0x14)));
+        status &= 0x20;
+        if (status == 0x20)
+            break;
+    }
+    (*((volatile unsigned *)(0x40010000 + 0x00))) = c;
+    return (1);
+#endif
+}
+
+struct __FILE
+{
+    int handle; /* Add whatever you need here */
+};
+
+FILE __stdout;
+__RAM_CODE int fputc(int ch, FILE *f) { return (sendchar(ch)); }
+
+int ferror(FILE *f)
+{
+    /* Your implementation of ferror */
+    return EOF;
+}
+
+void _ttywrch(int ch) { sendchar(ch); }
+
+void _sys_exit(int return_code)
+{
+label:
+    goto label; /* endless loop */
+}