- minor update to ep_set_response_and_toggle/xfer_data_packet

- merge USBHS_ISO_ACT_FLAG, USBHS_TRANSFER_FLAG handler since they are similar
- improve uart output
- add note for link speed in bus reset

hw/bsp/ch32v307/debug_uart.c

@@ -28,7 +28,7 @@
 #include <ch32v30x.h>
 
 
-#define UART_RINGBUFFER_SIZE_TX 64
+#define UART_RINGBUFFER_SIZE_TX 128
 #define UART_RINGBUFFER_MASK_TX (UART_RINGBUFFER_SIZE_TX-1)
 
 static char tx_buf[UART_RINGBUFFER_SIZE_TX];

hw/bsp/ch32v307/family.c

@@ -72,7 +72,7 @@ void board_init(void) {
   SysTick_Config(SystemCoreClock / 1000);
 #endif
 
-  usart_printf_init(115200);
+  usart_printf_init(CFG_BOARD_UART_BAUDRATE);
 
 #if CFG_TUD_MAX_SPEED == OPT_MODE_HIGH_SPEED
   // Use Highspeed USB
@@ -150,10 +150,11 @@ int board_uart_read(uint8_t* buf, int len) {
 
 int board_uart_write(void const* buf, int len) {
   int txsize = len;
+  const char* bufc = (const char*) buf;
   while (txsize--) {
-    uart_write(*(uint8_t const*) buf);
-    buf++;
+    uart_write(*bufc++);
   }
+  uart_sync();
   return len;
 }