diff --git a/myapps/practice/00-uart-tx/src/main.c b/myapps/practice/00-uart-tx/src/main.c
index 98205be..fcc20c3 100644
--- a/myapps/practice/00-uart-tx/src/main.c
+++ b/myapps/practice/00-uart-tx/src/main.c
@@ -1,25 +1,34 @@
 // Tx/Rx: PA09[PA11]/PA10[PA12]
 
 //#include <string.h>
+//#include <stdio.h>
 #include "stm32g0xx_hal_msp.h"
 
 UART_HandleTypeDef huart1;
 
 char buffer[] = "Hello World\r\n";
 #define TXBUFFERSIZE  14    //strlen(buffer)
-#define TIMEOUT 1000        //right val?
+#define TIMEOUT 0xFFFF
+/*
+int __io_putchar(int ch)
+{
+  HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, TIMEOUT);
+  return ch;
+}
+*/
+/*
+setvbuf(stout, NULL, _IOLBF, 0);
 
+int _write (int file, const void * ptr, size_t len)
+{
+  HAL_UART_Transmit(&huart1, ptr, len, TIMEOUT);
+  return len;
+}
+*/
 static void uart_init(void)
 {
 
-  /* USER CODE BEGIN USART1_Init 0 */
-
-  /* USER CODE END USART1_Init 0 */
-
-  /* USER CODE BEGIN USART1_Init 1 */
-
-  /* USER CODE END USART1_Init 1 */
-  huart1.Instance = USART1;
+  huart1.Instance = USART1;   // Defined in CMSIS header as peripheral address
   huart1.Init.BaudRate = 115200;
   huart1.Init.WordLength = UART_WORDLENGTH_8B;
   huart1.Init.StopBits = UART_STOPBITS_1;
@@ -44,6 +53,7 @@ int main(void)
   while(1)
   {
     HAL_UART_Transmit(&huart1, (uint8_t *)buffer, TXBUFFERSIZE, TIMEOUT);
+    //printf("Hello World\r\n");
     HAL_Delay(100);
   }
 }