Hello I use printf for sending out data from USART ports.
struct __FILE { int handle;} ; FILE __stdout; FILE __stdin; FILE __stderr; int fputc(int ch, FILE *f) { while(!USART_GetFlagStatus(USART1,USART_FLAG_TXE)); USART_SendData(USART1,ch); return ch; }
It works fine when I use printf function. Unfortunately when I want to use Ethernet library from cmsis this command "printf" hangs my mcu and when I change printf with USART_SendData(USART1,ch); my mcu works fine.
I have added this libraries.
(RTOS->keil RTX) (CMSIS Driver->ethernet MAC(API)) (CMSIS Driver->ethernet PHY(API)) Device(GPIO) Network(core + interface + socket->TCP/UDP)
what is my mistake?
Dear Per Westermark Thanks for your help Unfortunately I could not find out what is my problem when I use Ethernet library and I was hurry too much and I wrote a new function to send char with USART_SendData function. But thanks anyway