feat: 移植 lwprintf

project/inc/by_debug.h

@@ -0,0 +1,11 @@
+#ifndef _BY_DEBUG_H__
+#define _BY_DEBUG_H__
+
+#include <stdio.h>
+#include "lwprintf.h"
+
+#define BY_DEBUG_USART_INDEX (USART1)
+
+void by_debug_init(void);
+
+#endif

project/src/by_debug.c

@@ -0,0 +1,23 @@
+#include "by_debug.h"
+
+#include "at32f403a_407.h"
+#include "lwprintf.h"
+
+int lwprintf_out(int ch, lwprintf_t *lwp)
+{
+
+    /* May use printf to output it for test */
+
+    if (ch != '\0') {
+        while (usart_flag_get(BY_DEBUG_USART_INDEX, USART_TDC_FLAG) == RESET)
+            ;
+        usart_data_transmit(BY_DEBUG_USART_INDEX, (char)ch);
+    }
+
+    return ch;
+}
+
+void by_debug_init(void)
+{
+    lwprintf_init(lwprintf_out);
+}

project/src/main.c

@@ -26,10 +26,11 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "at32f403a_407_wk_config.h"
-#include "dwt_delay.h"
 /* private includes ----------------------------------------------------------*/
 /* add user code begin private includes */
+#include "dwt_delay.h"
 
+#include "by_debug.h"
 /* add user code end private includes */
 
 /* private typedef -----------------------------------------------------------*/
@@ -126,13 +127,13 @@ int main(void)
 
     /* add user code begin 2 */
     DWT_Init();
+    by_debug_init();
     /* add user code end 2 */
-    // i2c_start_generate(I2C1);
-    // i2c_7bit_address_send(I2C1, 0x68, I2C_DIRECTION_TRANSMIT);
+
 
     while (1) {
         /* add user code begin 3 */
-        // usart_data_transmit(USART1, 0xEF);
+        // DWT_Delay(1000000);
         /* add user code end 3 */
     }
 }