- UART takes baudrate on init

- UART calculate optimized baud prescaler git-svn-id: http://moon:8086/svn/projects/HendiControl@47 fda53097-d464-4ada-af97-ba876c37ca34
2019-03-03 08:39:07 +00:00
parent 62a224defa
commit b915c39801
4 changed files with 104 additions and 84 deletions
@@ -9,11 +9,15 @@
 #ifndef UART_H_
 #define UART_H_

+#include "machine.h"
 #include "fifo.h"

-void uart_init(Fifo *pFifo, uint16_t BAUD_PRESCALE);
+#define UART_PRESCALE(baudrate, smpPerBit) ((5+ 10*F_CPU / (baudrate*smpPerBit) - 1)/10)
+
+void uart_init(Fifo *pFifo, uint32_t baudrate);
 void uart_putc(char c);
 int uart_putchar(char c, FILE *stream);
 void uart_puts(char const *str);

+
 #endif /* UART_H_ */